/* ============================================================
   Chand Mandol Portfolio — Master CSS (Unified Compact Modern)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&family=Montserrat:wght@500;600;700;800&display=swap');

/* ─── Design Tokens ──────────────────────────────────────── */
:root {
    --primary:        hsl(224, 85%, 58%);
    --primary-dark:   hsl(224, 85%, 45%);
    --primary-light:  hsl(224, 85%, 75%);
    --accent:         hsl(263, 70%, 58%);
    --success:        #10b981;
    --danger:         #ef4444;
    --warning:        #f59e0b;

    --bg:             #ffffff;
    --bg-alt:         #f8fafc;
    --surface:        #ffffff;
    --text:           #0f172a;
    --text-muted:     #64748b;
    --border:         #e2e8f0;

    --container:      1100px;
    --radius-sm:      6px;
    --radius:         10px;
    --radius-lg:      14px;
    --transition:     all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    --shadow-sm:      0 1px 3px rgba(15,23,42,.06);
    --shadow:         0 4px 14px rgba(15,23,42,.08);
    --shadow-lg:      0 12px 32px rgba(15,23,42,.12);
    --glass-bg:       rgba(255,255,255,0.85);
    --glass-border:   rgba(255,255,255,0.35);

    --grad:           linear-gradient(135deg, var(--primary), var(--accent));
    --grad-2:         linear-gradient(135deg, hsl(224,85%,65%), hsl(263,70%,65%));
}

/* ─── Dark Mode ──────────────────────────────────────────── */
body.dark-mode {
    --bg:           #0f172a;
    --bg-alt:       #1e293b;
    --surface:      #1e293b;
    --text:         #f1f5f9;
    --text-muted:   #94a3b8;
    --border:       #334155;
    --glass-bg:     rgba(15,23,42,0.88);
    --glass-border: rgba(255,255,255,0.06);
    --shadow-sm:    0 1px 3px rgba(0,0,0,.3);
    --shadow:       0 4px 16px rgba(0,0,0,.4);
    --shadow-lg:    0 12px 36px rgba(0,0,0,.5);
}

/* ─── Resets ─────────────────────────────────────────────── */
*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
    line-height: 1.65;
    overflow-x: hidden;
    transition: background .4s ease, color .4s ease;
}
body.menu-open { overflow: hidden; }
body.menu-open header { z-index: 2001; }

/* Scrollbar */
::-webkit-scrollbar { width:6px; height:6px; }
::-webkit-scrollbar-track { background: var(--bg-alt); }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius:10px; }

a { text-decoration:none; color:inherit; transition: var(--transition); }
img { display:block; max-width:100%; }
ul { list-style:none; }

/* ─── Layout Helpers ─────────────────────────────────────── */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

section { padding: 60px 0; position: relative; }
.section-alt { background: var(--bg-alt); }
section:not(.section-alt) { background: var(--bg); }

hr { border:0; height:1px; background: var(--border); margin:0; }

/* ─── Typography ─────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
    font-family: 'Montserrat', sans-serif;
    color: var(--text);
    font-weight: 700;
    line-height: 1.25;
}
h1 { font-size: 2.4rem; }
h2 {
    font-size: 1.7rem;
    text-align: center;
    margin-bottom: 36px;
    padding-bottom: 14px;
    position: relative;
}
h2::after {
    content: '';
    position: absolute;
    bottom: 0; left:50%;
    transform: translateX(-50%);
    width: 52px; height: 4px;
    background: var(--grad);
    border-radius: 2px;
}
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }

p { color: var(--text-muted); font-size: 0.92rem; line-height:1.7; }
body.dark-mode p { color: var(--text-muted); }

.section-subtitle {
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.2px;
    font-size: 0.78rem;
    display: block;
    margin-bottom: 6px;
}

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 9px 22px;
    background: var(--grad);
    color: #fff;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(99,102,241,.2);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}
.btn::before {
    content:'';
    position:absolute;
    top:0; left:-100%; width:100%; height:100%;
    background: linear-gradient(90deg,transparent,rgba(255,255,255,.25),transparent);
    transition: left .5s;
}
.btn:hover::before { left:100%; }
.btn:hover {
    background: var(--grad-2);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99,102,241,.3);
    color: #fff;
}
.btn-secondary {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
    box-shadow: none;
}
.btn-secondary:hover {
    background: var(--grad);
    color: #fff;
    border-color: transparent;
}
.btn-lg { padding: 11px 28px; font-size: 0.95rem; }
.btn-block { width: 100%; justify-content: center; border-radius: var(--radius); }

/* ─── Fade-in Animations ─────────────────────────────────── */
.fade-in, .reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .6s ease, transform .6s ease;
}
.fade-in.visible, .reveal.active { opacity:1; transform:none; }

/* ─── Header / Nav ───────────────────────────────────────── */
header {
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 1000;
    padding: 10px 0;
    transition: var(--transition);
}
header.scrolled {
    padding: 7px 0;
    box-shadow: var(--shadow);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.logo {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.3rem;
    font-weight: 800;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -.2px;
    flex-shrink: 0;
}

.nav-right-cluster {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-links {
    display: flex;
    gap: 18px;
    align-items: center;
}
.nav-links a {
    position: relative;
    font-weight: 500;
    font-size: 0.875rem;
    padding: 5px 0;
    color: var(--text-muted);
}
.nav-links a::after {
    content:'';
    position:absolute;
    bottom:0; left:50%;
    transform:translateX(-50%);
    width:0; height:2px;
    background: var(--grad);
    border-radius:4px;
    transition: var(--transition);
}
.nav-links a:hover,
.nav-links a.active { color: var(--primary); }
.nav-links a:hover::after,
.nav-links a.active::after { width:100%; }

/* Theme Toggle */
.theme-toggle-container { display:flex; align-items:center; }
.theme-toggle {
    position:relative;
    display:inline-block;
    width:44px; height:22px;
}
.theme-toggle input { display:none; }
.slider {
    position:absolute;
    inset:0;
    background:#cbd5e1;
    border-radius:20px;
    cursor:pointer;
    transition: var(--transition);
}
.slider::before {
    content:'\f185';
    font-family:'Font Awesome 6 Free';
    font-weight:900;
    position:absolute;
    width:16px; height:16px;
    bottom:3px; left:3px;
    background:#fff;
    border-radius:50%;
    display:flex; align-items:center; justify-content:center;
    font-size:9px;
    color:#f59e0b;
    transition: var(--transition);
}
input:checked + .slider { background: var(--primary); }
input:checked + .slider::before {
    transform:translateX(22px);
    content:'\f186';
    color: var(--primary);
}
body.dark-mode .slider { background:#475569; }

/* Mobile hamburger button */
.mobile-menu, .hamburger {
    display: none;
    cursor: pointer;
    color: var(--text);
    width: 38px; height: 38px;
    border-radius: var(--radius-sm);
    background: var(--bg-alt);
    border: 1.5px solid var(--border);
    align-items: center; justify-content: center;
    font-size: 1rem;
    transition: var(--transition);
    flex-shrink: 0;
}
.mobile-menu:hover, .hamburger:hover {
    background: var(--grad);
    color: #fff;
    border-color: transparent;
}

/* ─── Mobile Sidebar Backdrop ────────────────────────────── */
.sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    z-index: 1999;
    opacity: 0;
    pointer-events: none;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}
.sidebar-backdrop.active {
    opacity: 1;
    pointer-events: all;
    visibility: visible;
}

/* ─── Sidebar Close Button (injected by JS) ──────────────── */
.sidebar-close-btn {
    position: absolute;
    top: 18px; right: 16px;
    width: 34px; height: 34px;
    border-radius: 50%;
    background: var(--bg-alt);
    border: 1.5px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.85rem;
    transition: var(--transition);
    z-index: 2;
    flex-shrink: 0;
}
.sidebar-close-btn:hover {
    background: #ef4444;
    color: #fff;
    border-color: transparent;
    transform: rotate(90deg) scale(1.1);
}

/* ─── Sidebar Brand (injected by JS) ─────────────────────── */
.sidebar-brand-label {
    position: absolute;
    top: 22px; left: 20px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 1rem;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1;
}

/* ─── Sidebar Section Label (injected by JS) ─────────────── */
.sidebar-section-label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 1.4px;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 6px 14px 2px;
    opacity: 0.55;
    pointer-events: none;
}

/* ─── Sidebar Social Footer (injected by JS) ─────────────── */
.sidebar-social-footer {
    display: flex;
    gap: 8px;
    padding: 16px 14px 0;
    margin-top: auto;
    border-top: 1px solid var(--border);
}
.sidebar-social-footer a {
    width: 34px; height: 34px;
    border-radius: 50%;
    background: var(--bg-alt) !important;
    border: 1.5px solid var(--border) !important;
    display: flex !important; align-items: center !important; justify-content: center !important;
    color: var(--text-muted) !important;
    font-size: 0.8rem;
    transition: var(--transition);
    padding: 0 !important;
    gap: 0 !important;
    transform: none !important;
}
.sidebar-social-footer a:hover {
    background: var(--grad) !important;
    border-color: transparent !important;
    color: #fff !important;
    transform: translateY(-2px) !important;
}

/* ─── Hero ───────────────────────────────────────────────── */
#hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    padding: 110px 0 55px;
    background: var(--bg);
    overflow: hidden;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    gap: 36px;
}

.hero-content h1 {
    font-size: 2.7rem;
    margin-bottom: 14px;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero-content > p {
    font-size: 0.95rem;
    margin-bottom: 28px;
    max-width: 480px;
}
.hero-btns {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

/* Hero Social */
.hero-social {
    display: flex;
    gap: 10px;
}
.hero-social a {
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    border: 1.5px solid var(--border);
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: var(--transition);
}
.hero-social a:hover {
    background: var(--grad);
    border-color: transparent;
    color: #fff;
    transform: translateY(-2px);
}

/* ========= Role Rotator — Typewriter Edition ========= */
.subtitle {
    margin-bottom: 22px;
    min-height: 52px;
    display: flex;
    align-items: center;
}

/* Outer pill badge */
.role-rotator {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px 10px 16px;
    background: rgba(99,102,241,0.07);
    border: 1px solid rgba(139,92,246,0.25);
    border-radius: 50px;
    backdrop-filter: blur(12px);
    box-shadow: 0 0 20px rgba(139,92,246,0.08), inset 0 0 12px rgba(99,102,241,0.04);
    position: relative;
    overflow: hidden;
    min-width: 0;
}

/* Animated shimmer sweep on pill */
.role-rotator::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, transparent 40%, rgba(139,92,246,0.12) 50%, transparent 60%);
    background-size: 200% 100%;
    animation: shimmerSweep 2.8s linear infinite;
    pointer-events: none;
}
@keyframes shimmerSweep {
    0%   { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Status dot */
.role-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary);
    flex-shrink: 0;
    box-shadow: 0 0 0 3px rgba(139,92,246,0.25);
    animation: dotPulse 2s ease-in-out infinite;
}
@keyframes dotPulse {
    0%,100% { transform: scale(1); opacity: 1; }
    50%      { transform: scale(1.3); opacity: 0.7; }
}

/* Text display area */
.role-display {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0;
    min-width: 180px;
    height: 28px;
    overflow: hidden;
}

/* The typed text */
.role-typed {
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    background: linear-gradient(90deg, var(--primary), #a78bfa, #60a5fa);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    white-space: nowrap;
    line-height: 28px;
}

/* Blinking cursor */
.role-cursor {
    display: inline-block;
    width: 2.5px;
    height: 20px;
    border-radius: 2px;
    background: var(--primary);
    margin-left: 2px;
    flex-shrink: 0;
    animation: cursorBlink 0.75s step-end infinite;
    align-self: center;
}
@keyframes cursorBlink {
    0%,100% { opacity: 1; }
    50%      { opacity: 0; }
}

/* Icon label before text */
.role-icon {
    font-size: 0.88rem;
    color: #a78bfa;
    flex-shrink: 0;
    margin-right: 6px;
    opacity: 0.9;
}

/* Legacy elements hidden */
.role-list, .role-item, .underline { display: none !important; }

/* Profile Blob */
.profile-container {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.profile-blob {
    width: 270px; height: 270px;
    background: var(--grad);
    border-radius: 47% 53% 70% 30% / 30% 52% 48% 70%;
    animation: morph 8s ease-in-out infinite, float 6s ease-in-out infinite;
    overflow: hidden;
    box-shadow: 0 12px 32px rgba(99,102,241,.22);
    border: 3px solid rgba(255,255,255,.25);
    flex-shrink: 0;
}
.profile-blob img {
    width: 97%; height: 97%;
    object-fit: cover;
    border-radius: inherit;
    transition: var(--transition);
}
.profile-blob:hover img { transform: scale(1.04); }
.profile-dots {
    position: absolute;
    top: -16px; right: -16px;
    width: 90px; height: 90px;
    background-image: radial-gradient(circle, var(--primary) 1.5px, transparent 1.5px);
    background-size: 14px 14px;
    opacity: .2;
    pointer-events: none;
}

@keyframes morph {
    0%,100% { border-radius: 47% 53% 70% 30% / 30% 52% 48% 70%; }
    50% { border-radius: 30% 70% 30% 70% / 70% 30% 70% 30%; }
}
@keyframes float {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ─── About ──────────────────────────────────────────────── */
.about-content {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 36px;
}
.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}
.about-card {
    background: var(--surface);
    padding: 26px 20px;
    border-radius: var(--radius-lg);
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.about-card::before {
    content:'';
    position:absolute;
    top:0; left:0;
    width:100%; height:3px;
    background: var(--grad);
    transform:scaleX(0);
    transform-origin:left;
    transition: transform .35s ease;
}
.about-card:hover::before { transform:scaleX(1); }
.about-card:hover {
    transform:translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}
.about-card i {
    font-size: 1.5rem;
    color: var(--primary);
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg,rgba(99,102,241,.1),rgba(139,92,246,.1));
    border-radius: 50%;
    margin: 0 auto 14px;
    transition: var(--transition);
}
.about-card:hover i { transform:scale(1.12) rotate(5deg); }
.about-card h3 { font-size:1.05rem; margin-bottom:8px; }

/* ─── Education ──────────────────────────────────────────── */
.education-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
    gap: 22px;
}
.edu-card-link { display:block; color:inherit; }
.education-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.edu-card-link:hover .education-card {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}
.education-img {
    height: 148px;
    overflow: hidden;
    position: relative;
    background: var(--bg-alt);
}
.education-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: var(--transition);
}
.edu-card-link:hover .education-img img { transform:scale(1.05); }
.edu-badge {
    position: absolute;
    top: 10px; right: 10px;
    background: var(--grad);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: .5px;
}
.education-content {
    padding: 18px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: var(--bg-alt);
}
.education-content h3 {
    font-size: 1rem;
    margin-bottom: 6px;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.education-content p {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.83rem;
    color: var(--text-muted);
    margin: 0;
}
.education-content p i { color: var(--primary); min-width:14px; font-size:0.8rem; }
.explore-btn {
    margin-top: auto;
    padding-top: 14px;
    padding: 9px 12px;
    background: var(--grad);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    margin-top: 14px;
}
.explore-btn.disabled {
    background: var(--bg);
    color: var(--text-muted);
    border: 1.5px solid var(--border);
    cursor: default;
}
.edu-card-link:hover .explore-btn:not(.disabled) {
    box-shadow: 0 4px 12px rgba(99,102,241,.3);
}

/* ─── Skills ─────────────────────────────────────────────── */
.skills-intro {
    text-align: center;
    max-width: 680px;
    margin: -18px auto 30px;
}
.skills-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 20px;
}
.skill-category {
    background: var(--surface);
    padding: 22px;
    border-radius: var(--radius);
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.skill-category:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}
.skill-category h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    font-size: 1rem;
}
.skill-category h3 i {
    color: var(--primary);
    font-size: 0.95rem;
    background: linear-gradient(135deg,rgba(99,102,241,.1),rgba(139,92,246,.1));
    width: 30px; height: 30px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
}
.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}
.skill-tag {
    background: var(--bg-alt);
    color: var(--text-muted);
    padding: 4px 11px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
    border: 1.5px solid var(--border);
    transition: var(--transition);
    cursor: default;
}
.skill-tag:hover {
    background: var(--grad);
    color: #fff;
    border-color: transparent;
}
.skill-progress { margin-top: 10px; }
.skill-item { margin-bottom: 10px; }
.skill-item:last-child { margin-bottom: 0; }
.skill-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-bottom: 4px;
}
.skill-bar {
    height: 5px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}
.skill-progress-value {
    height: 100%;
    background: var(--grad);
    width: 0;
    transition: width 1.2s ease-in-out;
    border-radius: 3px;
}

/* ─── Experience Cards ───────────────────────────────────── */
.experience-intro {
    text-align: center;
    max-width: 700px;
    margin: -18px auto 30px;
}
.compact-experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 20px;
}
.experience-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 22px;
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.experience-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}
.experience-header h3 {
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 6px;
}
.experience-header h3 i { color: var(--primary); }
.timeline-date {
    display: inline-block;
    font-size: 0.77rem;
    font-weight: 600;
    color: var(--primary);
    background: rgba(99,102,241,.08);
    padding: 3px 10px;
    border-radius: 20px;
}

/* ─── Achievements ───────────────────────────────────────── */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 20px;
}
.achievement-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 26px 18px;
    text-align: center;
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}
.achievement-card i {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 12px;
    display: block;
}
.achievement-card h3 { font-size:1rem; margin-bottom:8px; }

/* ─── Projects ───────────────────────────────────────────── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 22px;
}
.project-card-link { display:block; color:inherit; }
.project-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}
.project-card-link:hover .project-card {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}
.project-img {
    height: 155px;
    overflow: hidden;
    position: relative;
    background: var(--bg-alt);
}
.project-img img {
    width:100%; height:100%;
    object-fit:cover;
    transition: var(--transition);
}
.project-card-link:hover .project-img img { transform: scale(1.05); }
.project-img-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg,rgba(99,102,241,.92),rgba(139,92,246,.92));
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    opacity: 0;
    transition: var(--transition);
}
.project-img-overlay i { font-size:1.5rem; }
.project-img-overlay span { font-weight:600; font-size:0.85rem; }
.project-card-link:hover .project-img-overlay { opacity:1; }

.project-content {
    padding: 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.project-content h3 {
    font-size: 1rem;
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.project-content p { font-size:0.83rem; margin-bottom:12px; flex:1; }
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    margin-bottom: 12px;
}
.project-tags span {
    background: linear-gradient(135deg,rgba(99,102,241,.08),rgba(139,92,246,.08));
    color: var(--primary);
    padding: 3px 9px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
}
.project-stats {
    display: flex;
    justify-content: space-between;
    padding-top: 10px;
    border-top: 1px solid var(--border);
    margin-top: auto;
}
.stat-item {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.74rem;
    color: var(--text-muted);
}
.view-all-btn-container {
    text-align: center;
    margin-top: 30px;
}

/* Filter Buttons (Projects page) */
.project-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 28px;
}
.filter-btn {
    padding: 7px 18px;
    background: var(--bg-alt);
    border: 1.5px solid var(--border);
    border-radius: 20px;
    font-family:'Poppins',sans-serif;
    font-weight: 500;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-muted);
}
.filter-btn.active, .filter-btn:hover {
    background: var(--grad);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(99,102,241,.2);
}

/* Section intro */
.section-intro {
    text-align: center;
    max-width: 680px;
    margin: -18px auto 30px;
}

/* ─── Blog Section ───────────────────────────────────────── */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(270px, 1fr));
    gap: 20px;
}
.blog-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.blog-card:hover {
    transform:translateY(-4px);
    box-shadow: var(--shadow);
    border-color: var(--primary-light);
}
.blog-coming-soon {
    padding: 36px 24px;
    text-align: center;
    max-width: 380px;
    margin: 0 auto;
}
.blog-coming-soon i {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 14px;
    display: block;
}
.blog-coming-soon h3 { font-size:1.1rem; margin-bottom:8px; }
.blog-coming-soon p { font-size:0.85rem; margin-bottom:18px; }
.blog-content { padding: 16px; }
.blog-meta {
    display:flex;
    justify-content:space-between;
    font-size:0.75rem;
    color:var(--text-muted);
    margin-bottom:8px;
}
.blog-content h3 { font-size:1rem; margin-bottom:8px; }
.blog-content p { font-size:0.83rem; margin-bottom:12px; }
.blog-img { height:150px; overflow:hidden; }
.blog-img img { width:100%;height:100%;object-fit:cover;transition:var(--transition); }
.blog-card:hover .blog-img img { transform:scale(1.04); }

/* ─── Contact ────────────────────────────────────────────── */
.contact-intro {
    text-align: center;
    max-width: 680px;
    margin: -18px auto 32px;
}
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 32px;
    align-items: start;
}
.contact-details h3 { font-size:1.15rem; margin-bottom:10px; }
.contact-details > p { font-size:0.87rem; margin-bottom:20px; }
.contact-cards { display:flex; flex-direction:column; gap:12px; margin-bottom:20px; }
.contact-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--surface);
    border-radius: var(--radius);
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.contact-card:hover {
    border-color: var(--primary-light);
    transform: translateX(4px);
}
.contact-card i {
    color: var(--primary);
    font-size: 1.15rem;
    width: 36px; height: 36px;
    display:flex; align-items:center; justify-content:center;
    background: linear-gradient(135deg,rgba(99,102,241,.1),rgba(139,92,246,.1));
    border-radius: 50%;
    flex-shrink: 0;
}
.contact-card-content h4 { font-size:0.9rem; margin-bottom:2px; }
.contact-card-content p,
.contact-card-content a { font-size:0.83rem; color:var(--text-muted); }
.contact-card-content a:hover { color:var(--primary); }

.contact-social {
    display: flex;
    gap: 10px;
}
.contact-social a {
    width:36px; height:36px;
    display:flex; align-items:center; justify-content:center;
    border-radius:50%;
    border: 1.5px solid var(--border);
    color: var(--text-muted);
    font-size: 0.88rem;
    transition: var(--transition);
}
.contact-social a:hover {
    background: var(--grad);
    border-color:transparent;
    color:#fff;
    transform:translateY(-2px);
}

/* Contact Form */
.contact-form {
    background: var(--surface);
    padding: 28px;
    border-radius: var(--radius-lg);
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.form-group label {
    font-size: 0.83rem;
    font-weight: 600;
    color: var(--text);
}
.form-group input,
.form-group textarea {
    padding: 11px 14px;
    border-radius: var(--radius);
    border: 1.5px solid var(--border);
    background: var(--bg-alt);
    font-family: inherit;
    font-size: 0.88rem;
    color: var(--text);
    transition: var(--transition);
    outline: none;
    resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99,102,241,.12);
    background: var(--bg);
}
.form-group textarea { min-height: 105px; }
.form-status {
    text-align: center;
    font-size: 0.83rem;
    color: var(--text-muted);
    display: none;
}
.form-note {
    text-align: center;
    font-size: 0.78rem;
    color: var(--text-muted);
    opacity: .75;
}

/* ─── Footer ─────────────────────────────────────────────── */
footer {
    background: #0f172a;
    color: #e2e8f0;
    padding: 44px 0 20px;
}
.footer-content {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 28px;
}
.footer-section h3 {
    font-size: 1.05rem;
    color: #fff;
    margin-bottom: 14px;
}
.footer-section p {
    font-size: 0.85rem;
    color: rgba(255,255,255,.6);
    line-height: 1.65;
    margin-bottom: 14px;
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.footer-links a {
    font-size: 0.85rem;
    color: rgba(255,255,255,.6);
    transition: var(--transition);
    display:flex;
    align-items:center;
    gap:7px;
}
.footer-links a::before {
    content: '\f105';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 0.75rem;
    color: var(--primary);
}
.footer-links a:hover { color:#fff; padding-left:4px; }

.social-links {
    display: flex;
    gap: 10px;
    margin-top: 4px;
}
.social-links a {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,.08);
    display:flex; align-items:center; justify-content:center;
    color: rgba(255,255,255,.7);
    font-size: 0.88rem;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,.1);
}
.social-links a:hover {
    background: var(--grad);
    border-color: transparent;
    color: #fff;
    transform: translateY(-2px);
}

/* Visitor Counter */
.visitor-counter-container {
    background: rgba(255,255,255,.08);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    border: 1px solid rgba(255,255,255,.1);
}
.counter-icon { font-size:1.8rem; color: var(--primary); margin-bottom:8px; }
.counter-value { font-size:2rem; font-weight:700; color:#fff; margin-bottom:4px; }
.counter-label { font-size:0.8rem; color:rgba(255,255,255,.6); }

.copyright {
    border-top: 1px solid rgba(255,255,255,.1);
    padding-top: 18px;
    text-align: center;
}
.copyright p { color:rgba(255,255,255,.5); font-size:0.82rem; }

/* ─── Notes Page ─────────────────────────────────────────── */
#notes { padding: 95px 0 60px; }
.notes-container { max-width:760px; margin:0 auto; }
.notes-content {
    background: var(--surface);
    padding: 26px;
    border-radius: var(--radius-lg);
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow);
}
.password-overlay {
    position:fixed; inset:0;
    background:rgba(15,23,42,.88);
    display:flex; align-items:center; justify-content:center;
    z-index:2000;
    backdrop-filter:blur(8px);
}
.password-form {
    background: var(--surface);
    padding:32px; border-radius: var(--radius-lg);
    text-align:center; max-width:360px; width:90%;
    box-shadow: var(--shadow-lg);
    border:1.5px solid var(--border);
}
.password-form i { font-size:2rem; color:var(--primary); margin-bottom:14px; display:block; }
.password-form h3 { margin-bottom:8px; }
.password-form p { font-size:0.85rem; margin-bottom:18px; }
#passwordInput {
    width:100%; padding:11px 14px;
    border-radius: var(--radius); border:1.5px solid var(--border);
    background:var(--bg-alt); font-family:inherit;
    font-size:0.9rem; color:var(--text); margin-bottom:12px;
}
#passwordInput:focus { outline:none; border-color:var(--primary); box-shadow:0 0 0 3px rgba(99,102,241,.14); }
#unlockButton {
    width:100%; padding:11px;
    background: var(--grad); color:#fff;
    border:none; border-radius:var(--radius);
    font-weight:600; cursor:pointer; font-size:0.9rem;
    font-family:inherit; transition:var(--transition);
}
#unlockButton:hover { opacity:.9; transform:translateY(-1px); }
.error-message { color:var(--danger); font-size:0.8rem; margin-top:8px; font-weight:500; display:none; }

.search-bar { position:relative; margin-bottom:20px; }
.search-bar i {
    position:absolute; left:16px; top:50%;
    transform:translateY(-50%); color:var(--text-muted);
    pointer-events:none;
}
#searchInput {
    width:100%; padding:11px 16px 11px 42px;
    font-size:0.875rem; border-radius:30px;
    border:1.5px solid var(--border);
    background:var(--bg-alt); font-family:inherit;
    color:var(--text); transition:var(--transition);
}
#searchInput:focus {
    outline:none; border-color:var(--primary);
    box-shadow:0 0 0 3px rgba(99,102,241,.12);
    background:var(--bg);
}

.note-item {
    border:1.5px solid var(--border);
    border-radius:var(--radius);
    margin-bottom:10px;
    overflow:hidden;
    background:var(--bg-alt);
    transition:var(--transition);
}
.note-item:hover { border-color:var(--primary-light); box-shadow:var(--shadow-sm); }
.note-header {
    display:flex; align-items:center;
    padding:14px 16px; cursor:pointer;
    user-select:none;
}
.note-header .subject-icon {
    font-size:1rem; color:var(--primary);
    margin-right:14px; width:18px; text-align:center;
}
.note-header-content { flex:1; }
.note-header h4 { font-size:0.9rem; margin:0; color:var(--text); }
.note-date { font-size:0.72rem; color:var(--text-muted); margin-top:2px; }
.accordion-icon {
    font-size:0.85rem; color:var(--text-muted);
    transition:transform .3s ease;
}
.note-item.expanded .accordion-icon { transform:rotate(180deg); }
.note-details {
    max-height:0; overflow:hidden;
    transition:max-height .4s ease, padding .4s ease;
    padding:0 16px;
}
.note-item.expanded .note-details {
    max-height:400px;
    padding:12px 16px 16px;
    border-top:1px solid var(--border);
}
.note-downloads {
    display:flex; flex-wrap:wrap; gap:8px; margin-top:12px;
}
.note-downloads a {
    display:inline-flex; align-items:center; gap:6px;
    background: var(--grad);
    color:#fff; padding:6px 14px;
    border-radius:20px; font-size:0.78rem; font-weight:600;
    transition:var(--transition);
}
.note-downloads a:hover { opacity:.85; transform:translateY(-1px); }
.no-results {
    text-align:center; padding:32px 16px;
    color:var(--text-muted); display:none;
}
.no-results i { font-size:2.4rem; margin-bottom:14px; display:block; opacity:.4; }
.no-results h4 { font-size:1rem; margin-bottom:8px; }

/* ─── Project Detail Pages ───────────────────────────────── */
.project-hero {
    background: var(--bg-alt);
    padding: 95px 0 38px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}
.project-hero h1 { font-size:1.9rem; margin-bottom:8px; }
.project-hero p { font-size:0.92rem; }

.project-main-image {
    padding:28px 0;
    text-align:center;
}
.project-main-image img {
    max-width:100%; max-height:360px;
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-lg);
}
.project-content-layout {
    display:grid;
    grid-template-columns:1fr 2.1fr;
    gap:26px;
}
.project-meta {
    background:var(--bg-alt);
    padding:20px;
    border-radius:var(--radius);
    border:1.5px solid var(--border);
    height:fit-content;
    position:sticky; top:80px;
}
.meta-item {
    margin-bottom:16px; padding-bottom:16px;
    border-bottom:1px solid var(--border);
}
.meta-item:last-child { margin-bottom:0; padding-bottom:0; border-bottom:none; }
.meta-item h4 { font-size:0.85rem; margin-bottom:6px; color:var(--text-muted); text-transform:uppercase; letter-spacing:.5px; }
.meta-item p { font-size:0.85rem; }
.tech-tags { display:flex; flex-wrap:wrap; gap:4px; }
.tech-tags span {
    background:rgba(99,102,241,.08); color:var(--primary);
    padding:3px 9px; border-radius:12px;
    font-size:0.73rem; font-weight:600;
}
.project-description h3 {
    font-size:1.2rem; margin:22px 0 10px;
    padding-bottom:7px;
    border-bottom:2px solid var(--border);
}
.content-box {
    background:var(--bg-alt); padding:18px;
    border-radius:var(--radius); margin:16px 0;
    border:1.5px solid var(--border);
}
.content-box h4 { font-size:0.95rem; margin-bottom:10px; }
.feature-list { display:flex; flex-direction:column; gap:8px; }
.feature-item {
    font-size:0.87rem; position:relative;
    padding-left:22px; color:var(--text-muted);
}
.feature-item::before {
    content:'\f058';
    font-family:'Font Awesome 6 Free'; font-weight:900;
    position:absolute; left:0;
    color:var(--primary);
}
.feature-item .title { font-weight:600; color:var(--text); }
.project-links { display:flex; gap:12px; margin-top:20px; flex-wrap:wrap; }

/* Table */
table {
    width:100%; border-collapse:collapse;
    margin:16px 0; font-size:0.85rem;
    border-radius:var(--radius); overflow:hidden;
    border:1.5px solid var(--border);
    box-shadow:var(--shadow-sm);
}
table th, table td { padding:10px 14px; text-align:left; }
table thead tr { background:var(--grad); color:#fff; }
table tbody tr { background:var(--surface); }
table tbody tr:nth-child(even) { background:var(--bg-alt); }
table tbody tr:hover { background:rgba(99,102,241,.05); }

/* Video */
.video-container {
    position:relative; padding-bottom:56.25%; height:0;
    overflow:hidden; border-radius:var(--radius);
    box-shadow:var(--shadow); border:1px solid var(--border);
}
.video-container iframe {
    position:absolute; top:0; left:0;
    width:100%; height:100%;
}

/* ─── University Hero ────────────────────────────────────── */
.university-hero {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #fff;
    padding: 95px 0 48px;
    text-align: center;
}
.university-hero h1 { color:#fff; font-size:2rem; margin-bottom:8px; }
.university-hero .section-subtitle { color:rgba(255,255,255,.85); font-size:0.9rem; letter-spacing:.5px; }
.university-stats {
    display:flex; gap:20px; justify-content:center;
    flex-wrap:wrap; margin:16px 0 28px;
}
.university-stats span {
    display:flex; align-items:center; gap:7px;
    font-size:0.85rem; color:rgba(255,255,255,.85);
    background:rgba(255,255,255,.12);
    padding:6px 14px; border-radius:20px;
    backdrop-filter:blur(4px);
}

/* Image Slider */
.image-slider {
    position:relative; border-radius:var(--radius-lg);
    overflow:hidden; max-height:360px;
    background:#000; margin-top:10px;
    box-shadow:var(--shadow-lg);
}
.slider-image {
    width:100%; height:100%; object-fit:cover;
    display:none; border-radius:var(--radius-lg);
    max-height:360px;
}
.slider-image.active { display:block; }
.slider-caption {
    position:absolute; bottom:0; left:0; right:0;
    background:linear-gradient(transparent,rgba(0,0,0,.7));
    color:#fff; padding:20px 16px 14px;
    font-size:0.82rem; display:none;
    font-weight:500;
}
.slider-caption.active { display:block; }
.slider-controls {
    position:absolute; top:50%; left:0; right:0;
    transform:translateY(-50%);
    display:flex; justify-content:space-between;
    padding:0 12px; pointer-events:none;
}
.prev-btn, .next-btn {
    width:36px; height:36px;
    background:rgba(255,255,255,.18);
    backdrop-filter:blur(6px);
    border:1px solid rgba(255,255,255,.3);
    border-radius:50%; color:#fff;
    cursor:pointer; pointer-events:auto;
    display:flex; align-items:center; justify-content:center;
    font-size:0.85rem; transition:var(--transition);
}
.prev-btn:hover, .next-btn:hover { background:rgba(255,255,255,.35); }
.slider-dots {
    position:absolute; bottom:10px; left:50%;
    transform:translateX(-50%);
    display:flex; gap:6px;
}
.slider-dot {
    width:7px; height:7px;
    border-radius:50%;
    background:rgba(255,255,255,.45);
    cursor:pointer; transition:var(--transition);
}
.slider-dot.active { background:#fff; transform:scale(1.3); }

/* Activities Grid */
.activities-grid {
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
    gap:20px;
}
.activity-card {
    display:flex; gap:16px;
    background:var(--surface); padding:20px;
    border-radius:var(--radius); border:1.5px solid var(--border);
    box-shadow:var(--shadow-sm); transition:var(--transition);
}
.activity-card:hover {
    transform:translateY(-4px);
    box-shadow:var(--shadow); border-color:var(--primary-light);
}
.activity-icon {
    width:44px; height:44px;
    background:linear-gradient(135deg,rgba(99,102,241,.1),rgba(139,92,246,.1));
    border-radius:50%;
    display:flex; align-items:center; justify-content:center;
    flex-shrink:0; color:var(--primary); font-size:1.1rem;
}
.activity-content h3 { font-size:0.95rem; margin-bottom:4px; }
.activity-date {
    font-size:0.77rem; color:var(--primary); font-weight:600;
    margin-bottom:6px; display:block;
}
.activity-content p { font-size:0.83rem; }

/* Certificate Cards */
.certificate-image-container { margin-top:12px; }
.certificate-thumbnail {
    width:100%; max-height:160px; object-fit:cover;
    border-radius:var(--radius); border:1.5px solid var(--border);
    transition:var(--transition); cursor:pointer;
}
.certificate-thumbnail:hover { transform:scale(1.02); box-shadow:var(--shadow); }
.certificate-new-tab-indicator {
    font-size:0.72rem; color:var(--text-muted);
    margin-top:6px; display:flex; align-items:center; gap:5px;
    justify-content:center;
}

/* Video Resume */
.video-resume-container {
    display:grid;
    grid-template-columns:1.4fr 1fr;
    gap:28px; align-items:start;
}
.video-wrapper {
    position:relative; padding-bottom:56.25%; height:0;
    overflow:hidden; border-radius:var(--radius-lg);
    box-shadow:var(--shadow-lg); background:#000;
}
.video-wrapper iframe {
    position:absolute; top:0; left:0;
    width:100%; height:100%;
}
.play-button-overlay {
    position:absolute; top:50%; left:50%;
    transform:translate(-50%,-50%);
    width:56px; height:56px;
    background:rgba(99,102,241,.85);
    border-radius:50%;
    display:flex; align-items:center; justify-content:center;
    color:#fff; font-size:1.3rem;
    cursor:pointer; z-index:5;
    transition:var(--transition);
}
.play-button-overlay:hover { transform:translate(-50%,-50%) scale(1.1); }
.video-description h3 { font-size:1.1rem; margin-bottom:10px; }
.video-description p { font-size:0.87rem; margin-bottom:10px; }

/* ─── School Hero ────────────────────────────────────────── */
.school-hero {
    position:relative; min-height:360px;
    background:linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    display:flex; align-items:center; justify-content:center;
    text-align:center; overflow:hidden;
    padding:100px 0 48px;
}
.school-hero h1 {
    color:#fff; font-size:2.1rem;
    margin-bottom:10px;
    text-shadow:0 2px 10px rgba(0,0,0,.4);
    position:relative; z-index:2;
}
.school-hero .section-subtitle {
    color:rgba(255,255,255,.78); font-size:0.9rem;
    letter-spacing:.3px; position:relative; z-index:2;
}
.school-stats {
    display:flex; gap:16px; justify-content:center;
    flex-wrap:wrap; margin-top:20px; position:relative; z-index:2;
}
.school-stats span {
    display:flex; align-items:center; gap:7px;
    font-size:0.82rem; color:rgba(255,255,255,.82);
    background:rgba(255,255,255,.1);
    padding:6px 14px; border-radius:20px;
    backdrop-filter:blur(4px);
}
#particles-js {
    position:absolute; inset:0; pointer-events:none; z-index:1;
}
.hero-overlay {
    position:absolute; inset:0;
    background:rgba(0,0,0,.2); z-index:0;
}

/* Photo Gallery Grid */
.photo-gallery-grid {
    display:grid;
    grid-template-columns:repeat(auto-fill, minmax(220px,1fr));
    gap:16px;
}
.photo-card {
    position:relative; border-radius:var(--radius);
    overflow:hidden; aspect-ratio:4/3;
    box-shadow:var(--shadow-sm); transition:var(--transition);
    cursor:pointer;
}
.photo-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-lg); }
.photo-card img { width:100%; height:100%; object-fit:cover; transition:var(--transition); }
.photo-card:hover img { transform:scale(1.06); }
.photo-overlay {
    position:absolute; bottom:0; left:0; right:0;
    background:linear-gradient(transparent,rgba(0,0,0,.78));
    color:#fff; padding:20px 14px 14px;
    opacity:0; transition:var(--transition);
}
.photo-card:hover .photo-overlay { opacity:1; }
.photo-overlay h3 { font-size:0.9rem; margin-bottom:4px; color:#fff; }
.photo-overlay p { font-size:0.75rem; color:rgba(255,255,255,.8); }

/* Gradient card */
.gradient-card {
    border-radius:var(--radius);
    background:var(--grad);
    aspect-ratio:4/3;
    position:relative; overflow:hidden;
    box-shadow:var(--shadow-sm); transition:var(--transition);
}
.gradient-card:hover { transform:translateY(-4px); box-shadow:var(--shadow-lg); }
.gradient-overlay {
    position:absolute; inset:0;
    display:flex; align-items:center; justify-content:center;
    padding:20px; text-align:center;
}
.gradient-content h3 { color:#fff; font-size:1.05rem; margin-bottom:8px; }
.gradient-content p { color:rgba(255,255,255,.8); font-size:0.82rem; }

/* ─── Blog Header ────────────────────────────────────────── */
#blog-header {
    background:var(--bg-alt);
    padding:95px 0 38px;
    text-align:center;
    border-bottom:1px solid var(--border);
}
#blog-header h1 { font-size:2rem; margin-bottom:8px; }

/* ─── Compiler Design Lab ────────────────────────────────── */
.lab-hero {
    background:var(--bg-alt);
    padding:95px 0 38px;
    text-align:center;
    border-bottom:1px solid var(--border);
}
.lab-hero h1 { font-size:1.9rem; margin-bottom:8px; }

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 960px) {
    .footer-content { grid-template-columns: 1fr 1fr; }
    .project-content-layout { grid-template-columns: 1fr; }
    .project-meta { position:static; }
    .video-resume-container { grid-template-columns:1fr; }
    .contact-layout { grid-template-columns:1fr; }
}

@media (max-width: 768px) {
    h1 { font-size:1.9rem; }
    h2 { font-size:1.45rem; }
    section { padding:48px 0; }

    /* ── Slide-in Sidebar Panel (transform-based, GPU-accelerated) ── */
    .nav-links {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        position: fixed;
        top: 0; right: 0;
        width: 290px;
        height: 100vh;
        background: var(--glass-bg);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-left: 1px solid var(--glass-border);
        box-shadow: -12px 0 40px rgba(15,23,42,0.15);
        padding: 72px 16px 24px;
        gap: 3px;
        z-index: 2000;
        overflow-y: auto;
        transform: translateX(100%);
        visibility: hidden;
        will-change: transform;
        transition: transform 0.38s cubic-bezier(0.4, 0, 0.2, 1),
                    visibility 0s linear 0.38s;
    }
    .nav-links::before {
        content: '';
        position: absolute;
        top: 0; left: 0; right: 0;
        height: 3px;
        background: linear-gradient(90deg, var(--primary), var(--accent));
    }
    .nav-links.active {
        transform: translateX(0);
        visibility: visible;
        transition: transform 0.38s cubic-bezier(0.4, 0, 0.2, 1),
                    visibility 0s linear 0s;
    }

    /* ── Individual nav links ── */
    .nav-links a {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 0.92rem;
        font-weight: 600;
        color: var(--text);
        padding: 12px 14px;
        border-radius: var(--radius);
        border: 1.5px solid transparent;
        transition: all 0.22s ease;
    }
    .nav-links a::after { display: none !important; }
    .nav-links a:hover {
        background: rgba(99,102,241,0.07);
        color: var(--primary);
        border-color: rgba(99,102,241,0.14);
        transform: translateX(5px);
    }
    .nav-links a.active {
        background: linear-gradient(135deg, rgba(99,102,241,0.11), rgba(139,92,246,0.11));
        color: var(--primary);
        border-color: rgba(99,102,241,0.22);
    }
    .nav-links a .sidebar-link-icon {
        width: 28px; height: 28px;
        background: linear-gradient(135deg,rgba(99,102,241,.1),rgba(139,92,246,.1));
        border-radius: 7px;
        display: flex; align-items: center; justify-content: center;
        font-size: 0.78rem;
        color: var(--primary);
        flex-shrink: 0;
        transition: var(--transition);
    }
    .nav-links a:hover .sidebar-link-icon,
    .nav-links a.active .sidebar-link-icon {
        background: var(--grad);
        color: #fff;
    }

    /* Show hamburger button */
    .mobile-menu, .hamburger { display: flex; }

    /* Hero */
    .hero-grid { grid-template-columns:1fr; text-align:center; }
    .hero-content h1 { font-size:2rem; }
    .hero-content > p { max-width:100%; }
    .hero-btns { justify-content:center; }
    .hero-social { justify-content:center; }
    .subtitle { justify-content:center; }
    .profile-container { order:-1; }
    .profile-blob { width:200px; height:200px; }

    .footer-content { grid-template-columns:1fr; }
    .university-stats { flex-direction:column; align-items:center; }
    .school-stats { flex-direction:column; align-items:center; }
}

@media (max-width: 480px) {
    h1 { font-size:1.6rem; }
    h2 { font-size:1.3rem; }
    .container { padding:0 14px; }
    .hero-content h1 { font-size:1.7rem; }
    .btn-lg { padding:10px 22px; }
    .contact-form { padding:20px; }
    .notes-content { padding:18px; }
    .profile-blob { width:170px; height:170px; }
    .education-grid { grid-template-columns:1fr; }
}

/* ============================================================
   Aesthetic Enhancements (Modernized Redesign Additions)
   ============================================================ */
.available-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 18px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}
body.dark-mode .available-badge {
    background: rgba(99, 102, 241, 0.15);
    border-color: rgba(99, 102, 241, 0.35);
    color: var(--primary-light);
}
.pulse-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
    animation: pulse-green 2s infinite;
}
@keyframes pulse-green {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.bg-grid-pattern {
    position: absolute;
    inset: 0;
    background-size: 30px 30px;
    background-image: linear-gradient(to right, rgba(99, 102, 241, 0.03) 1px, transparent 1px),
                      linear-gradient(to bottom, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    pointer-events: none;
    z-index: 0;
}
body.dark-mode .bg-grid-pattern {
    background-image: linear-gradient(to right, rgba(99, 102, 241, 0.04) 1px, transparent 1px),
                      linear-gradient(to bottom, rgba(99, 102, 241, 0.04) 1px, transparent 1px);
}

.hero-glow-1 {
    position: absolute;
    top: 10%;
    left: -5%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.12) 0%, transparent 70%);
    filter: blur(80px);
    pointer-events: none;
    z-index: 0;
}
.hero-glow-2 {
    position: absolute;
    bottom: 5%;
    right: -5%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.12) 0%, transparent 70%);
    filter: blur(85px);
    pointer-events: none;
    z-index: 0;
}



/* Modernized Section Titles */
h2.fade-in, h2.reveal {
    font-size: 1.85rem;
    text-transform: capitalize;
    letter-spacing: -0.5px;
    font-weight: 800;
}

/* Glassmorphic skills style */
.skill-category {
    background: var(--surface);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border);
}
body.dark-mode .skill-category {
    background: rgba(30, 41, 59, 0.65);
    border-color: rgba(255, 255, 255, 0.05);
}

/* Advanced grid animations */
.experience-card, .about-card, .education-card, .project-card, .achievement-card {
    transition: transform 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), 
                box-shadow 0.4s cubic-bezier(0.165, 0.84, 0.44, 1), 
                border-color 0.3s ease;
}
.experience-card:hover, .about-card:hover, .education-card:hover, .project-card-link:hover .project-card, .achievement-card:hover {
    transform: translateY(-6px) scale(1.015);
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.12);
    border-color: var(--primary-light);
}
body.dark-mode .experience-card:hover, 
body.dark-mode .about-card:hover, 
body.dark-mode .education-card:hover, 
body.dark-mode .project-card-link:hover .project-card, 
body.dark-mode .achievement-card:hover {
    box-shadow: 0 16px 38px rgba(0, 0, 0, 0.45);
    border-color: rgba(99, 102, 241, 0.4);
}

/* ─── Compiler Lab Pages ─────────────────────────────────── */
.lab-container {
    max-width: 760px;
    margin: 0 auto;
    padding: 20px 0 60px;
}
.lab-content {
    background: var(--surface);
    padding: 26px;
    border-radius: var(--radius-lg);
    border: 1.5px solid var(--border);
    box-shadow: var(--shadow);
}
.file-item {
    background: var(--bg-alt);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 12px;
    transition: var(--transition);
}
.file-item:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}
.file-header {
    display: flex;
    align-items: center;
    gap: 16px;
    justify-content: space-between;
    flex-wrap: wrap;
}
.file-icon {
    font-size: 1.5rem;
    color: var(--primary);
    width: 24px;
    text-align: center;
}
.file-header-content { flex: 1; }
.file-header-content h4 { font-size: 0.95rem; margin: 0 0 2px 0; color: var(--text); }
.file-description { font-size: 0.8rem; color: var(--text-muted); }
.download-btn {
    padding: 7px 16px;
    background: var(--grad);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.download-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(99,102,241,.18);
}

/* ─── Hero Stats Grid ────────────────────────────────────── */
.hero-stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1.5px solid var(--border);
    position: relative;
    z-index: 2;
}
.stat-card {
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    padding: 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-light);
    box-shadow: var(--shadow);
}
body.dark-mode .stat-card {
    background: rgba(30, 41, 59, 0.5);
    border-color: rgba(255, 255, 255, 0.05);
}
body.dark-mode .stat-card:hover {
    border-color: rgba(99, 102, 241, 0.35);
}
.stat-number {
    display: block;
    font-family: 'Montserrat', sans-serif;
    font-size: 1.8rem;
    font-weight: 800;
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 4px;
}
.stat-label {
    display: block;
    font-size: 0.76rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

@media (max-width: 768px) {
    .hero-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        margin-top: 36px;
        padding-top: 24px;
    }
}
@media (max-width: 480px) {
    .hero-stats-grid {
        grid-template-columns: 1fr;
    }
}