/* ═══════════════════════════════════════════════════════════════════
   CSS CUSTOM PROPERTIES – light & dark themes
   ═══════════════════════════════════════════════════════════════════ */
:root {
    --bg:            #f1f5f9;
    --surface:       #ffffff;
    --surface2:      #e8f4fd;
    --text:          #0f172a;
    --text-muted:    #64748b;
    --accent:        #0284c7;
    --accent-dark:   #0369a1;
    --accent-hover:  #075985;
    --gold:          #f59e0b;
    --nav-bg:        rgba(10, 16, 30, 0.96);
    --nav-scrolled:  rgba(6, 10, 20, 0.99);
    --shadow-sm:     0 1px 4px rgba(0,0,0,0.07), 0 2px 10px rgba(0,0,0,0.05);
    --shadow-md:     0 4px 20px rgba(0,0,0,0.1), 0 2px 8px rgba(0,0,0,0.07);
    --shadow-lg:     0 10px 40px rgba(0,0,0,0.14);
    --radius:        12px;
    --transition:    0.22s ease;
    --glass-bg:      rgba(255,255,255,0.82);
    --glass-border:  rgba(255,255,255,0.55);
    --glow:          0 0 24px rgba(2,132,199,0.3);
}

[data-theme="dark"] {
    --bg:            #06080f;
    --surface:       #0b1120;
    --surface2:      #101c35;
    --text:          #e2e8f0;
    --text-muted:    #94a3b8;
    --accent:        #38bdf8;
    --accent-dark:   #0ea5e9;
    --accent-hover:  #7dd3fc;
    --nav-bg:        rgba(4, 6, 14, 0.96);
    --nav-scrolled:  rgba(4, 6, 14, 1);
    --shadow-sm:     0 2px 10px rgba(0,0,0,0.45);
    --shadow-md:     0 6px 24px rgba(0,0,0,0.6);
    --shadow-lg:     0 12px 48px rgba(0,0,0,0.75);
    --glass-bg:      rgba(11, 17, 32, 0.75);
    --glass-border:  rgba(56, 189, 248, 0.12);
    --glow:          0 0 28px rgba(56,189,248,0.35);
}

/* ─── Reset & Base ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg);
    color: var(--text);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color var(--transition), color var(--transition);
    overflow-x: hidden;
}

/* Dark mode deep radial glow behind hero area */
[data-theme="dark"] body {
    background-image: radial-gradient(ellipse at 50% 0%, rgba(14,165,233,0.12) 0%, transparent 60%);
}

main, body > section, body > .landing { flex: 1; }

/* ─── Page Transition ───────────────────────────────────────────── */
body.page-exit { animation: pageExit 0.3s ease forwards; }
body.page-enter { animation: pageEnter 0.35s ease forwards; }
@keyframes pageExit {
    from { opacity: 1; transform: translateY(0); }
    to   { opacity: 0; transform: translateY(-8px); }
}
@keyframes pageEnter {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: none; }
}

/* ─── Scroll Progress Bar ───────────────────────────────────────── */
#scroll-progress {
    position: fixed;
    top: 0; left: 0;
    height: 3px;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-dark), var(--gold));
    z-index: 2000;
    transition: width 0.1s linear;
    border-radius: 0 2px 2px 0;
}

/* ─── Mobile FAB ────────────────────────────────────────────────── */
.mobile-fab {
    display: none;
    position: fixed;
    bottom: 5rem;
    right: 1.5rem;
    z-index: 999;
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    color: #fff;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 0.82rem;
    padding: 0.65rem 1.2rem;
    border-radius: 50px;
    text-decoration: none;
    box-shadow: 0 4px 18px rgba(14,165,233,0.45);
    transition: transform var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}
.mobile-fab:hover { transform: scale(1.05); box-shadow: 0 6px 24px rgba(14,165,233,0.55); }

/* ═══════════════════════════════════════════════════════════════════
   NAVBAR – industry-level
   ═══════════════════════════════════════════════════════════════════ */
#main-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: 64px;
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background var(--transition), box-shadow var(--transition);
    box-shadow: 0 1px 0 rgba(255,255,255,0.08);
}

#main-nav.scrolled {
    background: var(--nav-scrolled);
    box-shadow: 0 4px 20px rgba(0,0,0,0.35);
}

/* Dark mode nav glow border */
[data-theme="dark"] #main-nav {
    border-bottom: 1px solid rgba(56,189,248,0.1);
    box-shadow: 0 1px 0 rgba(56,189,248,0.06), 0 2px 24px rgba(14,165,233,0.1);
}
[data-theme="dark"] #main-nav.scrolled {
    box-shadow: 0 4px 28px rgba(0,0,0,0.6), 0 0 40px rgba(14,165,233,0.08);
}

/* Brand */
.nav-brand {
    flex-shrink: 0;
    text-decoration: none;
    color: #fff;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.3px;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: opacity var(--transition);
}
.nav-brand:hover { opacity: 0.85; }
.nav-brand-dot {
    width: 8px; height: 8px;
    background: var(--gold);
    border-radius: 50%;
    display: inline-block;
}

/* Centre links */
.nav-links {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0 auto;
    padding: 0;
    gap: 0;
}

.nav-links a {
    display: block;
    padding: 0.55rem 0.85rem;
    color: rgba(255,255,255,0.82);
    text-decoration: none;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.875rem;
    letter-spacing: 0.2px;
    position: relative;
    transition: color var(--transition);
    white-space: nowrap;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -2px; left: 50%;
    width: 0; height: 2px;
    background: var(--gold);
    border-radius: 2px;
    transition: width var(--transition), left var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
    color: #fff;
}
.nav-links a:hover::after,
.nav-links a.active::after {
    width: 80%;
    left: 10%;
}

/* Right side controls */
.nav-cta-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

/* GitHub / LinkedIn icon links */
.nav-icon-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px; height: 34px;
    border-radius: 6px;
    color: rgba(255,255,255,0.75);
    text-decoration: none;
    font-size: 1.05rem;
    transition: background var(--transition), color var(--transition);
}
.nav-icon-link:hover {
    background: rgba(255,255,255,0.12);
    color: #fff;
}
.nav-icon-link svg {
    width: 18px; height: 18px;
    fill: currentColor;
    display: block;
}

/* Dark mode toggle */
#theme-toggle {
    background: none;
    border: 1px solid rgba(255,255,255,0.2);
    color: rgba(255,255,255,0.82);
    border-radius: 6px;
    width: 34px; height: 34px;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition), border-color var(--transition);
}
#theme-toggle:hover {
    background: rgba(255,255,255,0.12);
    border-color: rgba(255,255,255,0.35);
}

/* CTA button */
.nav-hire-btn {
    display: inline-flex;
    align-items: center;
    padding: 0.4rem 1rem;
    border-radius: 6px;
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    color: #fff;
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    font-size: 0.82rem;
    text-decoration: none;
    transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
    white-space: nowrap;
}
.nav-hire-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(14,165,233,0.4);
}

/* Hamburger */
#hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px; height: 36px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    transition: background var(--transition);
    margin-left: 0.5rem;
}
#hamburger:hover { background: rgba(255,255,255,0.1); }
#hamburger span {
    display: block;
    width: 22px; height: 2px;
    background: rgba(255,255,255,0.9);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
    transform-origin: center;
}
#hamburger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#hamburger.is-open span:nth-child(2) { opacity: 0; }
#hamburger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ─── Sections ──────────────────────────────────────────────────── */
section {
    text-align: center;
    margin: 3rem auto;
    max-width: 960px;
    padding: 0 1.25rem;
    width: 100%;
}

section h1 {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 0.35rem;
    letter-spacing: -0.5px;
}

section h1::after {
    content: '';
    display: block;
    width: 48px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--gold));
    border-radius: 3px;
    margin: 0.5rem auto 1.5rem;
}

/* Section number label */
.section-label {
    display: block;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 2.5px;
    margin-bottom: 0.4rem;
    opacity: 0.9;
}

section h2 {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    margin-top: 2.75rem;
    margin-bottom: 0.2rem;
    letter-spacing: -0.3px;
    position: relative;
    display: inline-block;
}

section h2::after {
    content: '';
    display: block;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--gold));
    border-radius: 2px;
    margin: 0.35rem auto 1rem;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

section h2.heading-visible::after {
    width: 100%;
}

/* ═══════════════════════════════════════════════════════════════════
   HERO / LANDING
   ═══════════════════════════════════════════════════════════════════ */
.landing {
    background: linear-gradient(150deg, #06090f 0%, #0a1832 35%, #0d2245 60%, #091830 100%);
    background-size: 300% 300%;
    animation: gradientShift 14s ease infinite;
    padding: 5.5rem 2rem 3rem;
    max-width: 100%;
    margin: 0;
    position: relative;
    overflow: hidden;
}

/* Floating particle blobs */
.landing::before,
.landing::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    filter: blur(80px);
    opacity: 0.18;
}
.landing::before {
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(56,189,248,0.6) 0%, rgba(14,165,233,0.2) 55%, transparent 100%);
    top: -150px; left: -120px;
    animation: floatBlob1 16s ease-in-out infinite;
}
.landing::after {
    width: 360px; height: 360px;
    background: radial-gradient(circle, rgba(245,158,11,0.35) 0%, rgba(14,165,233,0.15) 60%, transparent 100%);
    bottom: -80px; right: -80px;
    animation: floatBlob2 20s ease-in-out infinite;
}

@keyframes floatBlob1 {
    0%,100% { transform: translate(0,0) scale(1); }
    33%      { transform: translate(60px,40px) scale(1.1); }
    66%      { transform: translate(-30px,60px) scale(0.95); }
}
@keyframes floatBlob2 {
    0%,100% { transform: translate(0,0) scale(1); }
    40%      { transform: translate(-50px,-30px) scale(1.08); }
    70%      { transform: translate(30px,-50px) scale(0.92); }
}

/* Extra decorative blob (no pseudo) injected via JS */
.hero-blob {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    filter: blur(90px);
    opacity: 0.1;
    width: 280px; height: 280px;
    background: radial-gradient(circle, rgba(56,189,248,0.8) 0%, transparent 70%);
    top: 30%; left: 55%;
    animation: floatBlob2 22s ease-in-out infinite;
}

@keyframes gradientShift {
    0%   { background-position: 0% 50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Overlay for readability */
.landing-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(rgba(56,189,248,0.04) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(56,189,248,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

.landing > * { position: relative; }

/* Available for opportunities badge */
.available-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    background: rgba(56,189,248,0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(56,189,248,0.3);
    border-radius: 50px;
    padding: 0.35rem 1rem;
    margin-bottom: 1.5rem;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.78rem;
    font-weight: 600;
    color: rgba(255,255,255,0.9);
    letter-spacing: 0.4px;
}
.available-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: #4ade80;
    box-shadow: 0 0 0 0 rgba(74,222,128,0.6);
    animation: pulseGreen 2s ease-in-out infinite;
    flex-shrink: 0;
}
@keyframes pulseGreen {
    0%  { box-shadow: 0 0 0 0 rgba(74,222,128,0.7); }
    70% { box-shadow: 0 0 0 8px rgba(74,222,128,0); }
    100%{ box-shadow: 0 0 0 0 rgba(74,222,128,0); }
}

/* Hero fade-in */
.hero-animate .available-badge     { animation: fadeInDown 0.5s ease both; }
.hero-animate .hero-greeting       { animation: fadeInDown 0.6s 0.1s ease both; }
.hero-animate .profile-photo-wrap  { animation: fadeInDown 0.7s 0.2s ease both; }
.hero-animate .landing-name        { animation: fadeInUp  0.7s 0.3s ease both; }
.hero-animate .landing-role        { animation: fadeInUp  0.7s 0.4s ease both; }
.hero-animate .landing-bio         { animation: fadeInUp  0.7s 0.5s ease both; }
.hero-animate .hero-socials        { animation: fadeInUp  0.7s 0.6s ease both; }
.hero-animate .hero-cta            { animation: fadeInUp  0.7s 0.7s ease both; }
.hero-animate .scroll-indicator    { animation: fadeInUp  0.6s 0.9s ease both; }

/* Suppress global section h1/h2 decorators inside the hero */
.landing h1::after,
.landing h2::after { display: none; }

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to   { opacity: 1; transform: none; }
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: none; }
}

/* Profile photo with glowing aurora ring */
.profile-photo-wrap {
    position: relative;
    width: 180px; height: 180px;
    margin: 0 auto 1.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.profile-photo-ring {
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, #0369a1, #0ea5e9, #38bdf8, #7dd3fc, #0ea5e9, #0369a1);
    animation: spinRing 8s linear infinite;
    z-index: 0;
}
@keyframes spinRing {
    to { transform: rotate(360deg); }
}
.profile-photo-ring::before {
    content: '';
    position: absolute;
    inset: 4px;
    border-radius: 50%;
    background: linear-gradient(135deg, #06090f, #0a1832);
}
.profile-photo {
    width: 170px; height: 170px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid rgba(56,189,248,0.5);
    position: relative;
    z-index: 1;
    display: block;
    transition: transform 0.3s ease;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.profile-photo:hover {
    transform: scale(1.04);
}

.landing h1, .landing-name {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    margin: 0 0 0.4rem;
    letter-spacing: -0.5px;
    color: #ffffff;
    text-shadow: 0 2px 20px rgba(56,189,248,0.25);
}

.landing-role {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 1.2rem;
    color: #38bdf8;
    font-weight: 600;
    min-height: 1.8rem;
    margin-bottom: 1rem;
    letter-spacing: 0.3px;
}

#typewriter { border-right: 2px solid #38bdf8; padding-right: 2px; animation: blink 0.75s step-end infinite; }
@keyframes blink { 50% { border-color: transparent; } }

.landing p, .landing-bio {
    max-width: 660px;
    margin: 0 auto 1.75rem;
    font-size: 1.05rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.8);
}

.hero-greeting {
    max-width: 660px;
    margin: 0 auto 1.25rem;
    font-size: 1.15rem;
    font-weight: 600;
    color: rgba(255,255,255,0.95);
    letter-spacing: 0.01em;
}

/* Hero social quick-links */
.hero-socials {
    display: flex;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 1.75rem;
    flex-wrap: wrap;
}
.hero-social-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.9rem;
    border-radius: 6px;
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(8px);
    color: rgba(255,255,255,0.88);
    text-decoration: none;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.8rem;
    border: 1px solid rgba(255,255,255,0.14);
    transition: background var(--transition), transform var(--transition), border-color var(--transition);
    will-change: transform;
}
.hero-social-btn:hover {
    background: rgba(56,189,248,0.2);
    border-color: rgba(56,189,248,0.5);
    color: #fff;
    transform: translateY(-2px);
}
.hero-social-btn svg { width: 14px; height: 14px; fill: currentColor; flex-shrink: 0; }

/* CTA row */
.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Scroll-down indicator */
.scroll-indicator {
    position: absolute;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    color: rgba(255,255,255,0.65);
    font-size: 0.7rem;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    animation: bounceDown 2s ease-in-out infinite;
    text-decoration: none;
}
.scroll-indicator svg {
    width: 20px; height: 20px;
    fill: none;
    stroke: rgba(255,255,255,0.65);
    stroke-width: 2;
}
@keyframes bounceDown {
    0%,100% { transform: translateX(-50%) translateY(0); }
    50%      { transform: translateX(-50%) translateY(6px); }
}

/* ─── Stats Strip ───────────────────────────────────────────────── */
.hero-stats-strip {
    background: var(--surface);
    border-bottom: 1px solid rgba(0,0,0,0.07);
    padding: 1.75rem 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    flex-wrap: wrap;
    margin: 0 0 2rem;
    box-shadow: var(--shadow-sm);
}
[data-theme="dark"] .hero-stats-strip {
    background: var(--surface);
    border-bottom: 1px solid rgba(56,189,248,0.08);
}
.hero-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem 3rem;
    position: relative;
}
.hero-stat-item + .hero-stat-item::before {
    content: '';
    position: absolute;
    left: 0; top: 10%; bottom: 10%;
    width: 1px;
    background: rgba(0,0,0,0.08);
}
[data-theme="dark"] .hero-stat-item + .hero-stat-item::before {
    background: rgba(255,255,255,0.08);
}
.hero-stat-num {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
}
.hero-stat-label {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 0.35rem;
}

/* ─── Wave Dividers ─────────────────────────────────────────────── */
.wave-divider {
    width: 100%;
    overflow: hidden;
    line-height: 0;
    margin: 0;
}
.wave-divider svg {
    display: block;
    width: 100%;
    height: 48px;
}

/* ─── Buttons ───────────────────────────────────────────────────── */
.btn {
    display: inline-block;
    padding: 0.7rem 1.7rem;
    border-radius: 8px;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.92rem;
    text-decoration: none;
    cursor: pointer;
    transition: background var(--transition), box-shadow var(--transition), transform 0.15s;
    border: none;
    position: relative;
    overflow: hidden;
}
/* Ripple */
.btn .ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255,255,255,0.35);
    transform: scale(0);
    animation: rippleAnim 0.55s linear;
    pointer-events: none;
}
@keyframes rippleAnim {
    to { transform: scale(4); opacity: 0; }
}
.btn-primary {
    background-color: #0ea5e9;
    color: #fff;
}
.btn-primary:hover {
    background-color: #0284c7;
    box-shadow: 0 4px 20px rgba(14,165,233,0.45);
    transform: translateY(-1px);
}
.btn-secondary {
    background-color: #FF6F61;
    color: #fff;
}
.btn-secondary:hover {
    background-color: #e05548;
    box-shadow: 0 4px 12px rgba(224,85,72,0.3);
    transform: translateY(-1px);
}
.btn-outline {
    background: transparent;
    color: rgba(255,255,255,0.9);
    border: 2px solid rgba(255,255,255,0.35);
}
.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.7);
    transform: translateY(-1px);
}
.btn-cv {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff;
    font-weight: 700;
}
.btn-cv:hover {
    background: linear-gradient(135deg, #d97706, #b45309);
    box-shadow: 0 4px 20px rgba(245,158,11,0.4);
    transform: translateY(-1px);
}

figcaption a {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
}
figcaption a:hover { text-decoration: underline; }

/* ═══════════════════════════════════════════════════════════════════
   SCROLL-REVEAL
   ═══════════════════════════════════════════════════════════════════ */
.card,
.highlight-box,
.competition-card,
.institution-card,
.timeline-item,
.stat-box,
.skill-bar-wrap,
.social-card,
.contact-form-wrap,
.pub-card,
.hero-stat-item {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.55s ease, transform 0.55s ease;
    will-change: transform, opacity;
}
.card.visible,
.highlight-box.visible,
.competition-card.visible,
.institution-card.visible,
.timeline-item.visible,
.stat-box.visible,
.skill-bar-wrap.visible,
.social-card.visible,
.contact-form-wrap.visible,
.pub-card.visible,
.hero-stat-item.visible {
    opacity: 1;
    transform: none;
}

/* ═══════════════════════════════════════════════════════════════════
   CARDS – Glassmorphism + glow on hover
   ═══════════════════════════════════════════════════════════════════ */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.25rem;
    margin: 1.5rem 0;
    text-align: left;
}
.card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.75rem 1.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(0,0,0,0.06);
    border-top: 3px solid transparent;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), opacity 0.55s ease;
    will-change: transform;
    position: relative;
    overflow: hidden;
}
[data-theme="dark"] .card {
    background: var(--glass-bg);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--glass-border);
    border-top: 3px solid transparent;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md), 0 0 24px rgba(14,165,233,0.15);
    border-top-color: var(--accent);
}
[data-theme="dark"] .card:hover {
    box-shadow: var(--shadow-md), 0 0 28px rgba(56,189,248,0.2);
    border-top-color: var(--accent);
}
.card h3 {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 1.02rem;
    color: var(--text);
    margin: 0 0 0.6rem;
    font-weight: 700;
}
.card p {
    font-size: 0.91rem;
    color: var(--text-muted);
    margin: 0 0 1rem;
    line-height: 1.65;
}

/* Card hidden by filter */
.card-hidden {
    display: none !important;
}

/* ═══════════════════════════════════════════════════════════════════
   FILTER TABS (skills)
   ═══════════════════════════════════════════════════════════════════ */
.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin: 1.25rem 0 1.75rem;
}
.filter-btn {
    padding: 0.4rem 1.1rem;
    border-radius: 50px;
    border: 2px solid var(--accent);
    background: transparent;
    color: var(--accent);
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
    will-change: transform;
}
.filter-btn:hover,
.filter-btn.active {
    background: var(--accent);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(14,165,233,0.3);
}

/* ═══════════════════════════════════════════════════════════════════
   SKILL BARS
   ═══════════════════════════════════════════════════════════════════ */
.skill-bars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.1rem;
    margin: 1.25rem 0 2rem;
    text-align: left;
}
.skill-bar-wrap {
    background: var(--surface);
    border-radius: 8px;
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-sm);
    will-change: transform, opacity;
}
[data-theme="dark"] .skill-bar-wrap {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}
.skill-bar-label {
    display: flex;
    justify-content: space-between;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text);
    margin-bottom: 0.5rem;
}
.skill-bar-track {
    background: var(--bg);
    border-radius: 50px;
    height: 8px;
    overflow: hidden;
}
.skill-bar-fill {
    height: 100%;
    width: 0;
    border-radius: 50px;
    background: linear-gradient(90deg, var(--accent-dark), var(--accent), var(--gold));
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Circular Progress Rings ───────────────────────────────────── */
.skill-rings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1.5rem;
    margin: 1.25rem 0 2rem;
    justify-items: center;
}
.skill-ring-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
}
.skill-ring-svg {
    width: 88px; height: 88px;
    transform: rotate(-90deg);
}
.skill-ring-bg {
    fill: none;
    stroke: var(--bg);
    stroke-width: 6;
}
.skill-ring-fill {
    fill: none;
    stroke: url(#ringGradient);
    stroke-width: 6;
    stroke-linecap: round;
    stroke-dasharray: 220;
    stroke-dashoffset: 220;
    transition: stroke-dashoffset 1.2s cubic-bezier(0.4,0,0.2,1);
}
.skill-ring-label {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text);
    text-align: center;
    line-height: 1.3;
}
.skill-ring-percent {
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%,-50%) rotate(90deg);
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--accent);
}
.skill-ring-wrap {
    position: relative;
    width: 88px; height: 88px;
}

/* ═══════════════════════════════════════════════════════════════════
   SKILL BADGES – icon chips
   ═══════════════════════════════════════════════════════════════════ */
.skill-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    justify-content: center;
    margin: 1rem 0 1.5rem;
}
.badge {
    background: var(--surface);
    color: var(--text);
    padding: 0.35rem 0.85rem;
    border-radius: 20px;
    font-size: 0.82rem;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 600;
    letter-spacing: 0.2px;
    border: 1.5px solid rgba(0,122,204,0.3);
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: background var(--transition), border-color var(--transition), transform var(--transition);
    will-change: transform;
}
.badge:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    transform: translateY(-2px);
}
.badge svg {
    width: 14px; height: 14px;
    fill: currentColor;
    flex-shrink: 0;
}
[data-theme="dark"] .badge {
    background: var(--surface2);
    border-color: rgba(88,166,255,0.25);
}

/* ─── Project card enhancements ─────────────────────────────────── */
/* Category color accents */
.project-card[data-category="ai"]  { --cat-color: #8b5cf6; }
.project-card[data-category="iot"] { --cat-color: #10b981; }
.project-card[data-category="web"] { --cat-color: #3b82f6; }
.project-card { border-top: 3px solid var(--cat-color, var(--accent)); }
.project-card:hover { box-shadow: var(--shadow-md), 0 0 20px rgba(0,122,204,0.2); }

/* Project thumbnail gradient */
.project-thumb {
    width: 100%;
    height: 100px;
    border-radius: 6px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    opacity: 0.92;
    background: linear-gradient(135deg, var(--cat-color, var(--accent-dark)) 0%, var(--accent) 100%);
}

/* Category tag chip */
.project-cat-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: 0.15rem 0.55rem;
    border-radius: 4px;
    margin-bottom: 0.6rem;
    background: rgba(0,122,204,0.12);
    color: var(--cat-color, var(--accent));
    border: 1px solid rgba(0,122,204,0.25);
}

/* Featured ribbon */
.featured-ribbon {
    position: absolute;
    top: 0; right: 0;
    background: linear-gradient(135deg, var(--gold), #ffb300);
    color: #0a1929;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.25rem 0.7rem;
    border-radius: 0 var(--radius) 0 var(--radius);
}

/* Tech stack chips */
.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 0.75rem;
}
.tech-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
    background: var(--surface2);
    color: var(--text-muted);
    border: 1px solid rgba(0,0,0,0.08);
}
[data-theme="dark"] .tech-chip {
    background: rgba(255,255,255,0.06);
    border-color: rgba(255,255,255,0.1);
}
.tech-chip svg { width: 11px; height: 11px; fill: currentColor; }

/* ═══════════════════════════════════════════════════════════════════
   INSTITUTION FIGURES
   ═══════════════════════════════════════════════════════════════════ */
.institution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
}
.institution-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem 1.25rem;
    box-shadow: var(--shadow-sm);
    text-align: center;
    border-top: 3px solid transparent;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), opacity 0.55s ease;
}
.institution-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-top-color: var(--accent);
}
.institution-card h3 {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 1rem;
    color: var(--accent);
    margin: 0 0 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 700;
}
.institution-image {
    width: 100%;
    max-width: 260px;
    height: 160px;
    object-fit: cover;
    display: block;
    margin: 0 auto 0.6rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.institution-card figure {
    margin: 0;
}

/* Utility: back-link row below sections */
.section-back-link {
    margin-top: 2.5rem;
}

/* ═══════════════════════════════════════════════════════════════════
   RESEARCH PIC
   ═══════════════════════════════════════════════════════════════════ */
.Researchpic {
    width: 100%;
    max-width: 500px;
    height: auto;
    display: block;
    margin: 1rem auto;
    border-radius: var(--radius);
    box-shadow: 0 4px 14px rgba(0,0,0,0.12);
}

/* ═══════════════════════════════════════════════════════════════════
   HIGHLIGHT BOX
   ═══════════════════════════════════════════════════════════════════ */
.highlight-box {
    background: var(--surface2);
    border-left: 4px solid var(--accent);
    border-radius: 8px;
    padding: 1.2rem 1.5rem;
    text-align: left;
    margin: 1rem 0;
    font-size: 0.96rem;
    line-height: 1.75;
    color: var(--text);
    transition: opacity 0.55s ease, transform 0.55s ease;
    box-shadow: var(--shadow-sm);
}

/* ═══════════════════════════════════════════════════════════════════
   STAT COUNTERS (achievements)
   ═══════════════════════════════════════════════════════════════════ */
.stats-row {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    margin: 1.5rem 0 2rem;
}
.stat-box {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.6rem 2.2rem;
    box-shadow: var(--shadow-sm);
    text-align: center;
    min-width: 130px;
    border-bottom: 3px solid transparent;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), opacity 0.55s ease;
}
.stat-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-bottom-color: var(--accent);
}
.stat-count {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 2.6rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
    line-height: 1;
}
.stat-label {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.82rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-top: 0.35rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ═══════════════════════════════════════════════════════════════════
   TIMELINE (achievements)
   ═══════════════════════════════════════════════════════════════════ */
.timeline {
    position: relative;
    max-width: 700px;
    margin: 2rem auto;
    text-align: left;
    padding-left: 2rem;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 0; top: 0; bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--accent-dark), var(--accent));
    border-radius: 3px;
}
.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    padding-left: 1.5rem;
}
.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.375rem;
    top: 0.25rem;
    width: 14px; height: 14px;
    border-radius: 50%;
    background: var(--accent);
    border: 3px solid var(--bg);
    box-shadow: 0 0 0 2px var(--accent);
}
.timeline-date {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: 0.25rem;
}
.timeline-title {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 0.25rem;
}
.timeline-desc {
    font-size: 0.92rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.55;
}

/* ═══════════════════════════════════════════════════════════════════
   COMPETITION CARDS
   ═══════════════════════════════════════════════════════════════════ */
.competition-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin: 1.5rem 0;
    text-align: center;
}
.competition-card {
    background: var(--surface);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border-top: 3px solid transparent;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), opacity 0.55s ease;
}
.competition-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-top-color: var(--accent);
}
.competition-card img {
    width: 100%; height: 180px;
    object-fit: cover;
    display: block;
}
.competition-card .comp-info { padding: 1.1rem 1rem; }
.competition-card .comp-info p {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 0.75rem;
    font-size: 0.95rem;
}

/* ─── Publication Cards ─────────────────────────────────────────── */
.pub-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.6rem 1.5rem;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--accent);
    text-align: left;
    margin-bottom: 1.25rem;
    transition: transform var(--transition), box-shadow var(--transition), opacity 0.55s ease;
    will-change: transform;
    position: relative;
}
[data-theme="dark"] .pub-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-left: 4px solid var(--accent);
}
.pub-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md), 0 0 20px rgba(0,122,204,0.15);
}
.pub-card-header {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 0.5rem;
}
.pub-year-chip {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.15rem 0.55rem;
    border-radius: 4px;
    white-space: nowrap;
    flex-shrink: 0;
    margin-top: 0.1rem;
}
.pub-journal {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0;
    flex: 1;
}
.pub-card h3 {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 0.5rem;
}
.pub-abstract {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.65;
    margin-bottom: 1rem;
}
.pub-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 1rem;
}
.pub-actions {
    display: flex;
    gap: 0.6rem;
    flex-wrap: wrap;
    align-items: center;
}
.scholar-strip {
    background: linear-gradient(135deg, #0369a1 0%, #0284c7 100%);
    border-radius: var(--radius);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    margin: 1.5rem 0;
}
.scholar-strip-text {
    color: #fff;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 1rem;
}
.scholar-strip-text small {
    display: block;
    font-size: 0.8rem;
    opacity: 0.8;
    font-weight: 400;
}

/* ═══════════════════════════════════════════════════════════════════
   CONTACT
   ═══════════════════════════════════════════════════════════════════ */
.contact-intro {
    background: linear-gradient(150deg, #06090f 0%, #0a1832 40%, #0d2245 70%, #091530 100%);
    background-size: 300% 300%;
    animation: gradientShift 14s ease infinite;
    padding: 4rem 2rem;
    max-width: 100%;
    margin: 0 0 2rem;
    text-align: center;
    position: relative;
}
.contact-intro::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.05);
    pointer-events: none;
}
.contact-intro > * { position: relative; }
.contact-intro h1 {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 2.4rem;
    color: #fff;
    margin-bottom: 0.5rem;
}
.contact-intro h1::after { display: none; }
.contact-intro p { color: rgba(255,255,255,0.88); font-size: 1.05rem; }

/* Social icon grid */
.social-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1.25rem;
    margin: 1.5rem 0;
}
.social-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    padding: 1.5rem 1rem;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: var(--text);
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    transition: transform var(--transition), box-shadow var(--transition), color var(--transition), opacity 0.55s ease;
    border: 2px solid transparent;
    will-change: transform;
}
.social-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.social-card.linkedin:hover  { border-color: #0ea5e9; color: #0ea5e9; }
.social-card.github:hover    { border-color: #94a3b8; color: var(--text); }
.social-card.facebook:hover  { border-color: #3b82f6; color: #3b82f6; }
.social-card.gmail:hover     { border-color: #ef4444; color: #ef4444; }
[data-theme="dark"] .social-card.github:hover { border-color: var(--text-muted); }

.social-card-icon {
    width: 48px; height: 48px;
    border-radius: 12px;
    object-fit: contain;
    display: block;
}
.social-card-icon-svg {
    width: 48px; height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.social-card-icon-svg svg { width: 30px; height: 30px; fill: currentColor; }

/* Email copy widget */
.email-copy-row {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin: 1rem 0;
    position: relative;
}
.email-copy-text {
    font-size: 1rem;
    color: var(--text);
}
.email-copy-text a {
    color: var(--accent);
    font-weight: 500;
    text-decoration: none;
}
.email-copy-text a:hover { text-decoration: underline; }

#copy-email {
    background: none;
    border: 1px solid var(--accent);
    border-radius: 6px;
    padding: 0.25rem 0.6rem;
    color: var(--accent);
    cursor: pointer;
    font-size: 0.8rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    transition: background var(--transition), color var(--transition);
    flex-shrink: 0;
}
#copy-email:hover {
    background: var(--accent);
    color: #fff;
}
#copy-tooltip {
    position: absolute;
    left: 100%;
    margin-left: 0.5rem;
    background: #333;
    color: #fff;
    font-size: 0.78rem;
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}
#copy-tooltip.show { opacity: 1; }

.contact-location {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: 1rem;
}

/* Contact form */
.contact-form-wrap {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    max-width: 900px;
    margin: 0 auto 2rem;
    text-align: left;
}
.contact-form-wrap h2 {
    font-family: 'Montserrat', sans-serif;
    color: var(--text);
    margin: 0 0 1.25rem;
}
.contact-form-wrap h2::after { display: none; }
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.contact-form label {
    display: block;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text);
    margin-bottom: 0.35rem;
}
.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 0.65rem 0.9rem;
    border: 1.5px solid rgba(0,0,0,0.12);
    border-radius: 6px;
    font-family: 'Roboto', sans-serif;
    font-size: 0.95rem;
    background: var(--bg);
    color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}
[data-theme="dark"] .contact-form input,
[data-theme="dark"] .contact-form textarea {
    border-color: rgba(255,255,255,0.12);
}
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0,122,204,0.15);
}
.contact-form textarea { resize: vertical; min-height: 130px; }
.contact-form .btn { align-self: flex-start; }

.contact-details-section {
    background: var(--surface);
    padding: 2rem;
    border-radius: var(--radius);
    max-width: 900px;
    margin: 0 auto 2rem;
    box-shadow: var(--shadow-sm);
    text-align: left;
}
.contact-details-section h2 {
    font-family: 'Montserrat', sans-serif;
    color: var(--text);
    margin-top: 0;
}
.contact-details-section h2::after { display: none; }

/* ═══════════════════════════════════════════════════════════════════
   FOOTER – 3 column
   ═══════════════════════════════════════════════════════════════════ */
footer {
    background: linear-gradient(160deg, #040b1a 0%, #071525 50%, #04101e 100%);
    color: rgba(255,255,255,0.82);
    padding: 3rem 2rem 1.5rem;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    margin-top: auto;
    border-top: 1px solid rgba(56,189,248,0.1);
}
.footer-inner {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
    max-width: 960px;
    margin: 0 auto 1.5rem;
    align-items: start;
}
.footer-brand {
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.4rem;
}
.footer-tagline {
    font-size: 0.8rem;
    opacity: 0.7;
    line-height: 1.5;
}
.footer-links h4,
.footer-socials-col h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.6;
    margin: 0 0 0.75rem;
    font-weight: 600;
}
.footer-links ul {
    list-style: none;
    margin: 0; padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.footer-links a {
    color: rgba(255,255,255,0.78);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color var(--transition);
}
.footer-links a:hover { color: #38bdf8; }

.footer-socials-col {
    text-align: right;
}
.footer-social-icons {
    display: flex;
    gap: 0.6rem;
    justify-content: flex-end;
    flex-wrap: wrap;
}
.footer-social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px; height: 34px;
    border-radius: 8px;
    background: rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.8);
    transition: background var(--transition), color var(--transition);
    text-decoration: none;
}
.footer-social-icons a:hover { background: rgba(56,189,248,0.2); color: #38bdf8; }
.footer-social-icons svg { width: 16px; height: 16px; fill: currentColor; }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.12);
    padding-top: 1rem;
    text-align: center;
    font-size: 0.78rem;
    opacity: 0.65;
    max-width: 960px;
    margin: 0 auto;
}
.footer-bottom a { color: #38bdf8; text-decoration: none; }
.footer-bottom a:hover { text-decoration: underline; }

/* ═══════════════════════════════════════════════════════════════════
   BACK TO TOP
   ═══════════════════════════════════════════════════════════════════ */
#back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 1.5rem;
    width: 44px; height: 44px;
    border-radius: 10px;
    background: linear-gradient(135deg, #0ea5e9, #0284c7);
    color: #fff;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(14,165,233,0.35);
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity 0.3s, transform 0.3s;
    z-index: 999;
}
#back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: none;
}
#back-to-top:hover {
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14,165,233,0.5);
}

/* ═══════════════════════════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
    #hamburger { display: flex; }

    .nav-links {
        position: absolute;
        top: 64px;
        left: 0; right: 0;
        flex-direction: column;
        background: var(--nav-scrolled);
        padding: 0.5rem 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
        gap: 0;
    }
    .nav-links.nav-open { max-height: 400px; }
    .nav-links a { padding: 0.75rem 1.5rem; font-size: 0.9rem; }
    .nav-links a::after { bottom: 0; }

    #main-nav { position: relative; }

    .form-row { grid-template-columns: 1fr; }

    .footer-inner { grid-template-columns: 1fr; }
    .footer-socials-col { text-align: left; }
    .footer-social-icons { justify-content: flex-start; }
}

@media (max-width: 768px) {
    .landing h1, .landing-name { font-size: 2rem; }
    .landing p, .landing-bio { font-size: 1rem; }
    section h1 { font-size: 1.9rem; }
    section h2 { font-size: 1.25rem; }
    .nav-hire-btn { display: none; }
    .stats-row { gap: 1rem; }
    .stat-box { padding: 1.1rem 1.5rem; }
    .mobile-fab { display: flex; }
    .hero-stat-item { padding: 0.5rem 1.25rem; }
    .skill-rings-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 480px) {
    .landing { padding: 3.5rem 1rem 3rem; }
    .landing h1, .landing-name { font-size: 1.7rem; }
    .profile-photo { width: 130px; height: 130px; }
    .profile-photo-wrap { width: 150px; height: 150px; }
    .hero-socials { gap: 0.5rem; }
    .stats-row { flex-direction: column; align-items: center; }
    .hero-stats-strip { flex-direction: column; align-items: center; }
    .hero-stat-item + .hero-stat-item::before { display: none; }
    .skill-rings-grid { grid-template-columns: repeat(2, 1fr); }
    .scroll-indicator { display: none; }
}

/* ═══════════════════════════════════════════════════════════════════
   ABOUT PAGE – Vertical Experience Timeline
   ═══════════════════════════════════════════════════════════════════ */
.exp-timeline {
    position: relative;
    max-width: 820px;
    margin: 2rem auto;
    text-align: left;
}
.exp-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0; bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--accent-dark), var(--accent), var(--gold));
    transform: translateX(-50%);
    border-radius: 3px;
}
.exp-timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: calc(50% + 2rem);
    margin-bottom: 2.5rem;
    position: relative;
}
.exp-timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: calc(50% + 2rem);
}
.exp-timeline-icon {
    position: absolute;
    left: 50%;
    top: 0.5rem;
    transform: translateX(-50%);
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    z-index: 1;
    box-shadow: 0 0 0 4px var(--bg), 0 0 0 6px var(--accent);
    border: 2px solid var(--bg);
}
.exp-timeline-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.1rem 1.3rem;
    box-shadow: var(--shadow-sm);
    max-width: 340px;
    width: 100%;
    transition: transform var(--transition), box-shadow var(--transition);
    will-change: transform;
}
[data-theme="dark"] .exp-timeline-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}
.exp-timeline-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md), var(--glow);
}
.exp-timeline-year {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.1rem 0.5rem;
    border-radius: 4px;
    margin-bottom: 0.4rem;
}
.exp-timeline-card h3 {
    font-family: 'Space Grotesk', 'Montserrat', sans-serif;
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 0.3rem;
}
.exp-timeline-card p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.55;
}

@media (max-width: 640px) {
    .exp-timeline::before { left: 18px; transform: none; }
    .exp-timeline-item,
    .exp-timeline-item:nth-child(even) {
        justify-content: flex-start;
        padding-right: 0;
        padding-left: 3.5rem;
    }
    .exp-timeline-icon { left: 0; transform: none; }
    .exp-timeline-card { max-width: 100%; }
}