/* ============================================================
   DATA COSMOS — Portfolio CSS
   Sahib Dino | Data Analyst & Scientist
   Theme: Deep Navy · Cyan · Gold · Glassmorphism
   ============================================================ */

/* ── Variables ────────────────────────────────────────────── */
:root {
    --bg: #04071d;
    --bg-alt: #060b22;
    --surface: rgba(255, 255, 255, 0.04);
    --surface-hov: rgba(255, 255, 255, 0.07);
    --border: rgba(255, 255, 255, 0.08);
    --cyan: #00d4ff;
    --cyan-dim: rgba(0, 212, 255, 0.15);
    --cyan-glow: rgba(0, 212, 255, 0.3);
    --gold: #f5c842;
    --gold-dim: rgba(245, 200, 66, 0.15);
    --white: #ffffff;
    --text: #d4e4fa;
    --muted: #7a8fa6;
    --radius: 14px;
    --radius-lg: 20px;
    --font-head: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-mono: 'Space Grotesk', sans-serif;
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

strong {
    color: var(--white);
}

em {
    color: var(--cyan);
    font-style: normal;
}

code {
    font-family: var(--font-mono);
    color: var(--cyan);
    background: var(--cyan-dim);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: .88em;
}

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg);
}

::-webkit-scrollbar-thumb {
    background: #1e3a52;
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--cyan);
}

/* ── Particle Canvas ──────────────────────────────────────── */
#particleCanvas {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: .6;
}

/* ── Cursor Glow ──────────────────────────────────────────── */
.cursor-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, .07) 0%, transparent 70%);
    pointer-events: none;
    transform: translate(-50%, -50%);
    z-index: 1;
    transition: opacity .3s;
}

/* ── NAVBAR ───────────────────────────────────────────────── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 0 5%;
    height: 72px;
    background: rgba(4, 7, 29, .85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: background var(--transition);
}

.navbar.scrolled {
    background: rgba(4, 7, 29, .97);
    box-shadow: 0 4px 40px rgba(0, 0, 0, .4);
}

.nav-logo {
    font-family: var(--font-head);
    font-size: 1.7rem;
    font-weight: 900;
    letter-spacing: -1px;
    color: var(--white);
    margin-right: auto;
}

.logo-accent {
    color: var(--cyan);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: .85rem;
    font-weight: 500;
    color: var(--muted);
    letter-spacing: .06em;
    text-transform: uppercase;
    position: relative;
    transition: color var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 100%;
    height: 2px;
    background: var(--cyan);
    transition: right var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--white);
}

.nav-link:hover::after,
.nav-link.active::after {
    right: 0;
}

.btn-resume {
    font-family: var(--font-mono);
    font-size: .82rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    padding: .55rem 1.4rem;
    border: 1px solid var(--cyan);
    border-radius: 6px;
    color: var(--cyan);
    background: transparent;
    transition: background var(--transition), color var(--transition);
    white-space: nowrap;
}

.btn-resume:hover {
    background: var(--cyan);
    color: var(--bg);
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 6px;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

.hamburger.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.open span:nth-child(2) {
    opacity: 0;
}

.hamburger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav */
.mobile-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .7);
    z-index: 998;
    backdrop-filter: blur(4px);
}

.mobile-nav {
    position: fixed;
    top: 0;
    right: -320px;
    width: 300px;
    height: 100%;
    background: #060e2b;
    border-left: 1px solid var(--border);
    z-index: 999;
    padding: 5rem 2.5rem 3rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    transition: right var(--transition);
}

.mobile-nav.open {
    right: 0;
}

.mobile-backdrop.open {
    display: block;
}

.mobile-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: transparent;
    border: none;
    color: var(--muted);
    font-size: 1.4rem;
    cursor: pointer;
    transition: color var(--transition);
}

.mobile-close:hover {
    color: var(--cyan);
}

.mobile-nav ul {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.mob-link {
    font-family: var(--font-head);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text);
    transition: color var(--transition);
}

.mob-link:hover {
    color: var(--cyan);
}

.mob-cv-btn {
    margin-top: auto;
    text-align: center;
    padding: .9rem;
    border: 1px solid var(--cyan);
    border-radius: 8px;
    color: var(--cyan);
    font-weight: 600;
    font-family: var(--font-mono);
    transition: background var(--transition), color var(--transition);
}

.mob-cv-btn:hover {
    background: var(--cyan);
    color: var(--bg);
}

/* ── HERO ─────────────────────────────────────────────────── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding-top: 72px;
    z-index: 2;
    overflow: hidden;
}

/* Animated grid background */
.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 212, 255, .04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, .04) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
}

/* Radial gradient orb */
.hero::after {
    content: '';
    position: absolute;
    top: -20%;
    left: 50%;
    transform: translateX(-50%);
    width: 900px;
    height: 900px;
    background: radial-gradient(circle, rgba(0, 212, 255, .06) 0%, transparent 65%);
    pointer-events: none;
}

.hero-container {
    position: relative;
    z-index: 3;
    width: 100%;
    max-width: 1280px;
    padding: 0 5%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    min-height: calc(100vh - 72px);
}

/* Hero Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    background: var(--cyan-dim);
    border: 1px solid rgba(0, 212, 255, .25);
    border-radius: 50px;
    padding: .4rem 1.1rem;
    font-family: var(--font-mono);
    font-size: .8rem;
    font-weight: 600;
    letter-spacing: .06em;
    color: var(--cyan);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    box-shadow: 0 0 8px #22c55e;
    animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {

    0%,
    100% {
        box-shadow: 0 0 6px #22c55e;
    }

    50% {
        box-shadow: 0 0 16px #22c55e;
    }
}

/* Hero Name */
.hero-name {
    font-family: var(--font-head);
    font-size: clamp(4rem, 8vw, 7rem);
    font-weight: 900;
    line-height: .95;
    letter-spacing: -3px;
    margin-bottom: 1.4rem;
}

.name-white {
    color: var(--white);
}

.name-gold {
    background: linear-gradient(135deg, var(--gold) 0%, #ffaa00 60%, var(--gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 30px rgba(245, 200, 66, .4));
}

/* Role row */
.hero-role-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.6rem;
}

.role-line {
    width: 48px;
    height: 2px;
    background: linear-gradient(to right, var(--cyan), transparent);
    flex-shrink: 0;
}

.hero-role {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 600;
    color: var(--cyan);
    letter-spacing: .06em;
    text-transform: uppercase;
}

/* Bio */
.hero-bio {
    font-size: 1.05rem;
    color: var(--muted);
    max-width: 520px;
    line-height: 1.8;
    margin-bottom: 2rem;
}

/* Hero stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.stat-num {
    font-family: var(--font-head);
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--white);
    line-height: 1;
}

.stat-sym {
    font-family: var(--font-head);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--cyan);
    margin-left: 2px;
}

.stat-lbl {
    font-size: .75rem;
    font-family: var(--font-mono);
    color: var(--muted);
    letter-spacing: .08em;
    text-transform: uppercase;
    margin-top: .2rem;
}

.stat-sep {
    width: 1px;
    height: 48px;
    background: var(--border);
}

/* CTA buttons */
.hero-cta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    padding: .85rem 2rem;
    background: var(--cyan);
    color: var(--bg);
    font-family: var(--font-mono);
    font-size: .9rem;
    font-weight: 700;
    letter-spacing: .05em;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gold);
    opacity: 0;
    transition: opacity var(--transition);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--cyan-glow);
}

.btn-primary:hover::before {
    opacity: .15;
}

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: .6rem;
    padding: .85rem 2rem;
    background: transparent;
    color: var(--text);
    font-family: var(--font-mono);
    font-size: .9rem;
    font-weight: 600;
    letter-spacing: .05em;
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: var(--transition);
}

.btn-ghost:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--cyan-dim);
}

.icon-btns {
    display: flex;
    gap: .6rem;
}

.icon-btn {
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1.15rem;
    color: var(--muted);
    transition: var(--transition);
}

.icon-btn:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    background: var(--cyan-dim);
    transform: translateY(-2px);
}

/* ── Photo Side ───────────────────────────────────────────── */
.hero-photo-side {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.photo-frame {
    position: relative;
    width: 340px;
    height: 340px;
}

.photo-ring {
    position: absolute;
    inset: -12px;
    border-radius: 50%;
    border: 2px solid transparent;
    background: linear-gradient(var(--bg), var(--bg)) padding-box,
        linear-gradient(135deg, var(--cyan), var(--gold), var(--cyan)) border-box;
    animation: spin-ring 8s linear infinite;
}

@keyframes spin-ring {
    to {
        transform: rotate(360deg);
    }
}

.photo-inner {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid rgba(0, 212, 255, .2);
}

.hero-img {
    width: 100%;
    height: 100%;
    object-fit: cover;

    /* MANUAL CROPPING CONTROLS */
    /* 1. Zoom in (scale). 1.0 is normal, 1.5 is zoomed in 50% */
    transform: scale(1.05);
    /* 2. Move up/down. First number is Left/Right (50% is middle). Second number is Top/Bottom. */
    /* Change 20% to a higher number (like 50% or 80%) to move the crop downwards */
    object-position: 50% 32%;

}

/* Photo fallback if image missing */
.hero-img[src="sahib-photo.jpg"]:not([complete]),
.hero-img[src="sahib-photo.jpg"][broken] {
    background: linear-gradient(135deg, #0d2040, #1a3a5c);
}

/* Scan line */
.scan-line {
    position: absolute;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--cyan), transparent);
    opacity: .5;
    animation: scan 3s ease-in-out infinite;
    border-radius: 50%;
}

@keyframes scan {
    0% {
        top: 0%;
        opacity: 0;
    }

    20% {
        opacity: .5;
    }

    80% {
        opacity: .5;
    }

    100% {
        top: 100%;
        opacity: 0;
    }
}

/* Floating chips */
.float-chip {
    position: absolute;
    display: flex;
    align-items: center;
    gap: .5rem;
    padding: .55rem 1rem;
    background: rgba(6, 11, 34, .9);
    border: 1px solid var(--cyan-dim);
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: .78rem;
    font-weight: 600;
    color: var(--cyan);
    backdrop-filter: blur(12px);
    white-space: nowrap;
    box-shadow: 0 4px 20px rgba(0, 0, 0, .4);
}

.chip-top-left {
    top: 20px;
    left: -50px;
    animation: float-1 4s ease-in-out infinite;
}

.chip-bottom-right {
    bottom: 30px;
    right: -60px;
    animation: float-2 4.5s ease-in-out infinite;
}

.chip-bottom-left {
    bottom: 100px;
    left: -60px;
    animation: float-1 5s ease-in-out infinite .5s;
}

@keyframes float-1 {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-10px);
    }
}

@keyframes float-2 {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(8px);
    }
}

/* Orbit ring */
.orbit-ring {
    position: absolute;
    inset: -40px;
    border-radius: 50%;
    border: 1px dashed rgba(0, 212, 255, .15);
    animation: spin-orbit 20s linear infinite reverse;
}

@keyframes spin-orbit {
    to {
        transform: rotate(360deg);
    }
}

.orbit-dot {
    position: absolute;
    top: 50%;
    left: -5px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 12px var(--cyan);
    transform: translateY(-50%);
}

/* Scroll indicator */
.scroll-down {
    position: absolute;
    bottom: 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .5rem;
    font-family: var(--font-mono);
    font-size: .7rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--muted);
    z-index: 3;
    transition: color var(--transition);
    animation: fade-in-up 1s ease .8s both;
}

.scroll-down:hover {
    color: var(--cyan);
}

.scroll-mouse {
    width: 24px;
    height: 38px;
    border: 2px solid currentColor;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.scroll-wheel {
    width: 3px;
    height: 8px;
    background: currentColor;
    border-radius: 2px;
    animation: scroll-anim 1.5s infinite;
}

@keyframes scroll-anim {
    0% {
        transform: translateY(0);
        opacity: 1;
    }

    100% {
        transform: translateY(12px);
        opacity: 0;
    }
}

/* ── Shared Section Styles ────────────────────────────────── */
.section {
    position: relative;
    z-index: 2;
    padding: 7rem 0;
}

.section-alt {
    background: var(--bg-alt);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 5%;
}

/* Section header */
.sec-header {
    text-align: center;
    margin-bottom: 4rem;
}

.sec-tag {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .2em;
    color: var(--cyan);
    text-transform: uppercase;
    padding: .3rem .9rem;
    border: 1px solid var(--cyan-dim);
    border-radius: 50px;
    background: var(--cyan-dim);
    margin-bottom: 1rem;
}

.sec-title {
    font-family: var(--font-head);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.2;
    color: var(--white);
}

.gold {
    color: var(--gold);
}

.sec-sub {
    margin-top: 1rem;
    color: var(--muted);
    font-size: 1.05rem;
    max-width: 560px;
    margin-inline: auto;
}

/* Glass card */
.glass-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.glass-card:hover {
    background: var(--surface-hov);
    border-color: rgba(0, 212, 255, .2);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, .3), 0 0 0 1px rgba(0, 212, 255, .05);
}

/* AOS-like reveal */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity .7s ease, transform .7s ease;
}

[data-aos="fade-right"] {
    transform: translateX(-30px);
}

[data-aos="fade-left"] {
    transform: translateX(30px);
}

[data-aos="zoom-in"] {
    transform: scale(.95);
}

[data-aos].visible {
    opacity: 1;
    transform: none;
}

/* ── ABOUT ────────────────────────────────────────────────── */
.about-layout {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    color: var(--muted);
    margin-bottom: 1.2rem;
    font-size: 1.03rem;
}

.skills-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: .6rem;
    margin-top: 1.5rem;
}

.skill-pill {
    display: inline-flex;
    align-items: center;
    gap: .45rem;
    padding: .45rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: .8rem;
    font-weight: 600;
    color: var(--text);
    transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.skill-pill:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    background: var(--cyan-dim);
}

.about-cards {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.about-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: .5rem;
}

.acard-icon {
    font-size: 1.4rem;
    color: var(--cyan);
    margin-bottom: .2rem;
}

.about-card h3 {
    font-family: var(--font-head);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--white);
}

.about-card p {
    font-size: .9rem;
    color: var(--muted);
    line-height: 1.6;
}

/* ── EXPERTISE ────────────────────────────────────────────── */
.exp-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 3.5rem;
}

.exp-card {
    padding: 2rem 1.5rem;
    position: relative;
    overflow: hidden;
}

.exp-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(to right, var(--cyan), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.exp-card:hover::before {
    opacity: 1;
}

.exp-num {
    font-family: var(--font-head);
    font-size: 3rem;
    font-weight: 900;
    color: rgba(0, 212, 255, .08);
    line-height: 1;
    margin-bottom: .5rem;
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.exp-icon {
    font-size: 1.8rem;
    color: var(--cyan);
    margin-bottom: 1rem;
}

.exp-card h3 {
    font-family: var(--font-head);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: .7rem;
}

.exp-card p {
    font-size: .9rem;
    color: var(--muted);
    line-height: 1.65;
}

/* Tech ticker */
.ticker-wrap {
    overflow: hidden;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border);
    -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.ticker-track {
    display: flex;
    gap: 2.5rem;
    animation: ticker 28s linear infinite;
    white-space: nowrap;
}

.ticker-track span {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    font-family: var(--font-mono);
    font-size: .88rem;
    font-weight: 600;
    color: var(--muted);
    transition: color var(--transition);
}

.ticker-track span:hover {
    color: var(--white);
}

@keyframes ticker {
    from {
        transform: translateX(0);
    }

    to {
        transform: translateX(-50%);
    }
}

/* ── EXPERIENCE / TIMELINE ────────────────────────────────── */
.timeline {
    max-width: 860px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.tl-item {
    display: grid;
    grid-template-columns: 40px 1fr;
    gap: 1.5rem;
    position: relative;
}

.tl-left {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.tl-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--surface);
    border: 2px solid var(--border);
    flex-shrink: 0;
    margin-top: 1.5rem;
    transition: var(--transition);
    position: relative;
    z-index: 1;
}

.tl-dot.active {
    background: var(--cyan);
    border-color: var(--cyan);
    box-shadow: 0 0 16px var(--cyan-glow);
}

.tl-item:hover .tl-dot {
    border-color: var(--cyan);
}

.tl-line {
    width: 2px;
    flex: 1;
    background: linear-gradient(to bottom, var(--cyan-dim), transparent);
    margin-top: 4px;
}

.tl-card {
    padding: 2rem;
    margin-bottom: 2rem;
}

.tl-top {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tl-date {
    font-family: var(--font-mono);
    font-size: .78rem;
    color: var(--muted);
    letter-spacing: .05em;
    display: flex;
    align-items: center;
    gap: .4rem;
}

.tl-badge {
    padding: .2rem .7rem;
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.tl-badge.current {
    background: rgba(34, 197, 94, .15);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, .3);
}

.tl-title {
    font-family: var(--font-head);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: .4rem;
}

.tl-company {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .88rem;
    color: var(--cyan);
    font-family: var(--font-mono);
    margin-bottom: 1rem;
}

.tl-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: .55rem;
    margin-bottom: 1.2rem;
}

.tl-list li {
    font-size: .93rem;
    color: var(--muted);
    padding-left: 1.2rem;
    position: relative;
    line-height: 1.65;
}

.tl-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--cyan);
    font-size: .8rem;
}

.tl-chips {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

.tl-chips span {
    padding: .28rem .8rem;
    background: var(--cyan-dim);
    border: 1px solid rgba(0, 212, 255, .2);
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: .72rem;
    font-weight: 600;
    color: var(--cyan);
}

/* ── PROJECTS ─────────────────────────────────────────────── */
.proj-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.8rem;
    margin-bottom: 3rem;
}

.proj-card {
    padding: 2rem;
    position: relative;
    overflow: hidden;
    cursor: default;
}

.proj-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--cyan-dim), transparent);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.proj-card:hover::after {
    opacity: 1;
}

.proj-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.proj-num {
    font-family: var(--font-head);
    font-size: 2.5rem;
    font-weight: 900;
    color: rgba(0, 212, 255, .08);
    line-height: 1;
}

.proj-gh {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1.1rem;
    color: var(--muted);
    transition: var(--transition);
    position: relative;
    z-index: 2;
}

.proj-gh:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    background: var(--cyan-dim);
}

.proj-ico {
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 10px rgba(245, 200, 66, .3));
}

.proj-card h3 {
    font-family: var(--font-head);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: .8rem;
    line-height: 1.3;
}

.proj-card p {
    font-size: .92rem;
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 1.2rem;
}

.proj-tags {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

.proj-tags span {
    padding: .28rem .8rem;
    background: var(--gold-dim);
    border: 1px solid rgba(245, 200, 66, .2);
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: .72rem;
    font-weight: 600;
    color: var(--gold);
}

.proj-cta {
    text-align: center;
}

/* ── CERTIFICATIONS ───────────────────────────────────────── */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.cert-card {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
}

.cert-ico {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--cyan);
    background: var(--cyan-dim);
    border: 1px solid rgba(0, 212, 255, .2);
    border-radius: 12px;
    flex-shrink: 0;
}

.cert-body {
    flex: 1;
}

.cert-body h3 {
    font-family: var(--font-head);
    font-size: .95rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: .3rem;
    line-height: 1.3;
}

.cert-body span {
    font-family: var(--font-mono);
    font-size: .78rem;
    color: var(--muted);
}

.cert-badge {
    font-family: var(--font-head);
    font-size: .72rem;
    font-weight: 900;
    letter-spacing: .06em;
    padding: .25rem .65rem;
    background: var(--gold-dim);
    border: 1px solid rgba(245, 200, 66, .2);
    border-radius: 6px;
    color: var(--gold);
    flex-shrink: 0;
}

/* ── CONTACT ──────────────────────────────────────────────── */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 2.5rem;
    align-items: start;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 1.2rem;
    padding: 1.2rem 1.5rem;
    transition: var(--transition);
}

.contact-link:hover {
    transform: translateX(4px);
    border-color: rgba(0, 212, 255, .3);
}

.cl-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--cyan);
    background: var(--cyan-dim);
    border-radius: 10px;
    flex-shrink: 0;
}

.cl-body {
    display: flex;
    flex-direction: column;
    gap: .15rem;
    flex: 1;
}

.cl-label {
    font-family: var(--font-mono);
    font-size: .72rem;
    color: var(--muted);
    letter-spacing: .08em;
    text-transform: uppercase;
}

.cl-val {
    font-size: .95rem;
    color: var(--text);
    font-weight: 500;
}

.cl-arrow {
    color: var(--muted);
    font-size: .9rem;
    transition: color var(--transition);
}

.contact-link:hover .cl-arrow {
    color: var(--cyan);
}

.contact-card {
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
}

.contact-glow {
    position: absolute;
    top: -80px;
    right: -80px;
    width: 260px;
    height: 260px;
    background: radial-gradient(circle, rgba(0, 212, 255, .1), transparent 70%);
    pointer-events: none;
}

.contact-card h3 {
    font-family: var(--font-head);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: .8rem;
}

.contact-card p {
    color: var(--muted);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.contact-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* ── FOOTER ───────────────────────────────────────────────── */
.footer {
    position: relative;
    z-index: 2;
    padding: 3rem 5%;
    border-top: 1px solid var(--border);
    background: var(--bg);
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .8rem;
}

.footer-logo {
    font-family: var(--font-head);
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--white);
}

.footer-tagline {
    font-size: .95rem;
    color: var(--muted);
}

.footer-socials {
    display: flex;
    gap: 1.2rem;
}

.footer-socials a {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    color: var(--muted);
    transition: var(--transition);
}

.footer-socials a:hover {
    border-color: var(--cyan);
    color: var(--cyan);
    background: var(--cyan-dim);
}

.footer-copy {
    font-size: .8rem;
    color: #3d5066;
    font-family: var(--font-mono);
}

/* ── Keyframes ────────────────────────────────────────────── */
@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 1100px) {
    .exp-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 900px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
        padding-top: 3rem;
        padding-bottom: 3rem;
        min-height: auto;
    }

    .hero-text {
        order: 2;
    }

    .hero-photo-side {
        order: 1;
    }

    .hero-role-row {
        justify-content: center;
    }

    .hero-bio {
        margin-inline: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-badge {
        margin-inline: auto;
    }

    .about-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .proj-grid {
        grid-template-columns: 1fr;
    }

    .certs-grid {
        grid-template-columns: 1fr;
    }

    .contact-layout {
        grid-template-columns: 1fr;
    }

    .float-chip {
        display: none;
    }

    .photo-frame {
        width: 280px;
        height: 280px;
    }

    .nav-links,
    .btn-resume {
        display: none;
    }

    .hamburger {
        display: flex;
    }
}

@media (max-width: 640px) {
    .exp-grid {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        gap: 1rem;
    }

    .hero-cta {
        gap: .7rem;
    }

    .hero-name {
        font-size: 3.5rem;
        letter-spacing: -2px;
    }

    .photo-frame {
        width: 240px;
        height: 240px;
    }

    .tl-item {
        grid-template-columns: 30px 1fr;
        gap: 1rem;
    }

    .tl-card {
        padding: 1.4rem;
    }

    .cert-card {
        flex-direction: column;
        text-align: center;
    }
}