/* =========================================================
   USB 2026 - Design Tokens
========================================================= */
:root {
    --navy: #062B50;
    --tech-blue: #087CC1;
    --cyan: #20D5E8;
    --light-cyan: #9AEAF4;
    --bg: #F7FAFC;
    --white: #FFFFFF;
    --text: #1A202C;
    --text-muted: #5B6B7D;

    --gradient: linear-gradient(135deg, var(--navy), var(--tech-blue), var(--cyan));
    --gradient-soft: linear-gradient(135deg, rgba(6, 43, 80, 0.06), rgba(32, 213, 232, 0.08));

    /* Warna kategori lomba — mengikuti palet flyer USB 2026 */
    --cat-1: #087CC1; /* Menulis Artikel — biru */
    --cat-2: #F97316; /* UI/UX Design — oranye */
    --cat-3: #EC4899; /* Pengembangan Bisnis TIK — magenta */
    --cat-4: #8B5CF6; /* Live Coding — ungu */
    --cat-5: #22C55E; /* Software Development — hijau */
    --cat-6: #06B6D4; /* Implementasi Data Mining — teal */

    --font-heading: 'Space Grotesk', 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;

    --radius: 20px;
    --radius-sm: 12px;
    --shadow-soft: 0 10px 30px rgba(6, 43, 80, 0.08);
    --shadow-glow: 0 0 0 rgba(32, 213, 232, 0);
    --container: 1200px;

    --transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

/* =========================================================
   Reset & Base
========================================================= */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--bg);
    line-height: 1.65;
    font-size: 16px;
    overflow-x: hidden;
}

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

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

ul { list-style: none; }

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--navy);
}

button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

section { position: relative; padding: 96px 0; }

.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }

.section-eyebrow {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--tech-blue);
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(28px, 4vw, 40px);
    margin-bottom: 16px;
}

.section-desc { color: var(--text-muted); font-size: 17px; }

/* =========================================================
   Scroll Reveal
========================================================= */
[data-reveal] {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* =========================================================
   Page Loader
========================================================= */
.page-loader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--navy);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 18px;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.is-hidden { opacity: 0; visibility: hidden; pointer-events: none; }

.page-loader__ring {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 3px solid rgba(32, 213, 232, 0.2);
    border-top-color: var(--cyan);
    animation: spin 0.9s linear infinite;
}

.page-loader__text {
    font-family: var(--font-heading);
    color: var(--light-cyan);
    letter-spacing: 0.1em;
    font-size: 14px;
}

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

/* =========================================================
   Buttons & Badges
========================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 100px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 15px;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    white-space: nowrap;
}

.btn--primary {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 8px 24px rgba(8, 124, 193, 0.35);
}

.btn--primary:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(32, 213, 232, 0.4); }

.btn--outline {
    border: 1.5px solid var(--tech-blue);
    color: var(--navy);
    background: transparent;
}

.btn--outline:hover { background: rgba(8, 124, 193, 0.08); transform: translateY(-3px); }

.btn--outline-dark {
    border: 1.5px solid rgba(6, 43, 80, 0.35);
    color: var(--navy);
}

.btn--outline-dark:hover { background: rgba(6, 43, 80, 0.06); transform: translateY(-3px); }

.btn--light {
    background: var(--white);
    color: var(--navy);
}

.btn--light:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15); }

.btn:disabled { opacity: 0.5; cursor: not-allowed; pointer-events: none; }
.btn:disabled:hover { transform: none; box-shadow: none; }

.btn--lg { padding: 18px 36px; font-size: 16px; }

.btn--sm { padding: 10px 20px; font-size: 13px; }

.btn--glow {
    background: var(--cyan);
    color: var(--navy);
    box-shadow: 0 0 24px 6px rgba(32, 213, 232, 0.55);
}

.btn--glow:hover { transform: translateY(-3px); box-shadow: 0 0 36px 10px rgba(32, 213, 232, 0.75); }

.btn--whatsapp {
    background: #25D366;
    color: var(--white);
    width: 100%;
    justify-content: center;
    padding: 12px 20px;
    font-size: 14px;
}

.btn--whatsapp:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(37, 211, 102, 0.4); }

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-heading);
}

.badge--pill {
    background: rgba(32, 213, 232, 0.12);
    color: var(--tech-blue);
    padding: 8px 18px;
    border-radius: 100px;
    border: 1px solid rgba(32, 213, 232, 0.35);
    margin-bottom: 20px;
}

.badge--outline {
    border: 1px solid rgba(32, 213, 232, 0.4);
    color: var(--tech-blue);
    padding: 8px 16px;
    border-radius: 100px;
    background: rgba(32, 213, 232, 0.06);
}

/* =========================================================
   Navbar
========================================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 18px 0;
    transition: background var(--transition), padding var(--transition), box-shadow var(--transition), backdrop-filter var(--transition);
}

.navbar--scrolled {
    padding: 12px 0;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(16px);
    box-shadow: 0 4px 24px rgba(6, 43, 80, 0.08);
}

.navbar__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }

.navbar__brand { display: flex; align-items: center; gap: 10px; color: var(--white); }

.navbar--scrolled .navbar__brand { color: var(--navy); }

.navbar__logo { display: block; width: auto; object-fit: contain; }
.navbar__logo--ug { height: 38px; }
.navbar__logo--usb { height: 40px; }

.navbar__divider { width: 1px; height: 26px; background: currentColor; opacity: 0.3; }

.navbar__wordmark { font-family: var(--font-heading); font-size: 18px; font-weight: 700; }

.navbar__menu { display: flex; align-items: center; gap: 28px; }

.navbar__link {
    font-family: var(--font-heading);
    font-size: 14.5px;
    font-weight: 500;
    color: var(--white);
    position: relative;
    transition: color var(--transition);
}

.navbar--scrolled .navbar__link { color: var(--navy); }

.navbar__link::after {
    content: '';
    position: absolute;
    left: 0; bottom: -6px;
    width: 0; height: 2px;
    background: var(--cyan);
    transition: width var(--transition);
}

.navbar__link:hover::after { width: 100%; }

.navbar__cta { margin-left: 8px; }

.navbar__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
}

.navbar__toggle span {
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition), background var(--transition);
}

.navbar--scrolled .navbar__toggle span { background: var(--navy); }

.navbar__toggle--active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.navbar__toggle--active span:nth-child(2) { opacity: 0; }
.navbar__toggle--active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   Hero
========================================================= */
.hero {
    min-height: 88vh;
    display: flex;
    align-items: center;
    padding-top: 140px;
    padding-bottom: 80px;
    background: var(--gradient);
    overflow: hidden;
}

.hero__bg { position: absolute; inset: 0; overflow: hidden; z-index: 0; }

.hero__grid {
    position: absolute;
    inset: -20%;
    background-image:
        linear-gradient(rgba(154, 234, 244, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(154, 234, 244, 0.08) 1px, transparent 1px);
    background-size: 42px 42px;
    animation: driftGrid 40s linear infinite;
}

@keyframes driftGrid { to { transform: translate(42px, 42px); } }

.hero__particle {
    position: absolute;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 12px 4px rgba(32, 213, 232, 0.7);
    animation: floatParticle 7s ease-in-out infinite;
}

.p1 { top: 20%; left: 10%; animation-delay: 0s; }
.p2 { top: 60%; left: 22%; animation-delay: 1.2s; }
.p3 { top: 30%; left: 85%; animation-delay: 2.1s; }
.p4 { top: 75%; left: 70%; animation-delay: 3s; }
.p5 { top: 12%; left: 55%; animation-delay: 4s; }

@keyframes floatParticle {
    0%, 100% { transform: translateY(0) scale(1); opacity: 0.7; }
    50% { transform: translateY(-24px) scale(1.3); opacity: 1; }
}

.hero__inner {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 48px;
    align-items: center;
}

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

.hero__title {
    font-size: clamp(48px, 7vw, 84px);
    color: var(--white);
    letter-spacing: -0.01em;
    margin-bottom: 6px;
}

.hero__title span { color: var(--cyan); }

.hero__subtitle {
    font-family: var(--font-heading);
    font-size: clamp(16px, 2vw, 20px);
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--light-cyan);
    margin-bottom: 20px;
}

.hero__theme {
    font-size: 18px;
    font-style: italic;
    color: rgba(255, 255, 255, 0.92);
    max-width: 520px;
    margin-bottom: 18px;
    border-left: 3px solid var(--cyan);
    padding-left: 16px;
}

.hero__desc {
    color: rgba(255, 255, 255, 0.75);
    max-width: 520px;
    margin-bottom: 32px;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 16px; margin-bottom: 40px; }

.hero__actions .btn--outline { color: var(--white); border-color: rgba(255, 255, 255, 0.5); }
.hero__actions .btn--outline:hover { background: rgba(255, 255, 255, 0.12); }

.hero__info { display: flex; flex-wrap: wrap; gap: 28px; }

.hero__info-item { display: flex; align-items: center; gap: 12px; color: var(--white); }

.hero__info-item i { font-size: 26px; color: var(--cyan); }

.hero__info-item span { display: block; font-size: 12.5px; color: rgba(255, 255, 255, 0.65); }

.hero__info-item strong { font-family: var(--font-heading); font-size: 14.5px; }

.hero__visual { position: relative; height: 480px; display: flex; align-items: center; justify-content: center; }

.hero__rings { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; }

.ring {
    position: absolute;
    border: 1px solid rgba(154, 234, 244, 0.25);
    border-radius: 50%;
    animation: spinSlow linear infinite;
}

.ring--1 { width: 300px; height: 300px; animation-duration: 30s; }
.ring--2 { width: 380px; height: 380px; animation-duration: 45s; animation-direction: reverse; }
.ring--3 { width: 460px; height: 460px; animation-duration: 60s; }

@keyframes spinSlow { to { transform: rotate(360deg); } }

.hero__illustration { position: relative; z-index: 1; width: 100%; max-width: 480px; height: auto; object-fit: contain; filter: drop-shadow(0 24px 48px rgba(6, 43, 80, 0.35)); animation: floatSoft 6s ease-in-out infinite; }

@keyframes floatSoft {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
}

.floating-chip {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(154, 234, 244, 0.3);
    color: var(--white);
    font-size: 12.5px;
    font-family: var(--font-heading);
    padding: 8px 14px;
    border-radius: 100px;
    backdrop-filter: blur(6px);
    animation: floatSoft 5s ease-in-out infinite;
}

.chip--1 { top: 8%; left: 0%; animation-delay: 0.5s; }
.chip--2 { bottom: 18%; right: -4%; animation-delay: 1.5s; }
.chip--3 { top: 55%; left: -6%; animation-delay: 2.5s; }

.hero__scroll {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 26px;
    animation: bounceDown 2s ease-in-out infinite;
    z-index: 1;
}

@keyframes bounceDown {
    0%, 100% { transform: translate(-50%, 0); }
    50% { transform: translate(-50%, 8px); }
}

/* =========================================================
   Stats
========================================================= */
.stats { padding: 56px 0; background: var(--white); }

.stats__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.stat-card {
    text-align: center;
    padding: 32px 20px;
    border-radius: var(--radius);
    border: 1px solid rgba(32, 213, 232, 0.18);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.stat-card:hover {
    transform: translateY(-6px);
    border-color: var(--cyan);
    box-shadow: 0 16px 32px rgba(32, 213, 232, 0.15);
}

.stat-card__icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    background: var(--gradient-soft);
    color: var(--tech-blue);
    font-size: 26px;
}

.stat-card__value {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 700;
    color: var(--navy);
}

.stat-card__label { color: var(--text-muted); font-size: 14.5px; margin-top: 4px; }

/* =========================================================
   About
========================================================= */
.about__inner {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 56px;
    align-items: center;
}

.about__illustration { width: 100%; }

.value-cards { display: flex; gap: 16px; margin-top: 32px; flex-wrap: wrap; }

.value-card {
    flex: 1;
    min-width: 140px;
    padding: 20px;
    border-radius: var(--radius-sm);
    background: var(--white);
    border: 1px solid rgba(32, 213, 232, 0.18);
    text-align: center;
    transition: transform var(--transition), border-color var(--transition);
}

.value-card:hover { transform: translateY(-4px); border-color: var(--cyan); }

.value-card i { font-size: 28px; color: var(--tech-blue); margin-bottom: 8px; }

.value-card h3 { font-size: 15px; }

/* =========================================================
   Categories
========================================================= */
.categories { background: var(--white); }

.categories__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.category-card {
    position: relative;
    background: var(--white);
    border: 1px solid rgba(32, 213, 232, 0.2);
    border-radius: var(--radius);
    padding: 32px 28px;
    box-shadow: var(--shadow-soft);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    overflow: hidden;
}

.category-card:hover {
    transform: translateY(-8px);
    border-color: var(--cyan);
    box-shadow: 0 20px 40px rgba(32, 213, 232, 0.22);
}

.category-card__number {
    display: block;
    font-family: var(--font-heading);
    font-size: 46px;
    font-weight: 700;
    color: rgba(8, 124, 193, 0.14);
    line-height: 1;
    margin-bottom: 8px;
}

.category-card {
    border-top: 3px solid transparent;
}

.category-card__icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: var(--gradient-soft);
    color: var(--tech-blue);
    font-size: 24px;
    margin-bottom: 18px;
    transition: transform var(--transition);
}

.category-card:hover .category-card__icon { transform: scale(1.12) rotate(-4deg); }

.category-card__title { font-size: 20px; margin-bottom: 10px; }

.category-card__desc { color: var(--text-muted); font-size: 15px; }

/* Badge warna per kategori lomba, mengikuti palet flyer (1-6) */
.cat-badge--1 { --cat-color: var(--cat-1); }
.cat-badge--2 { --cat-color: var(--cat-2); }
.cat-badge--3 { --cat-color: var(--cat-3); }
.cat-badge--4 { --cat-color: var(--cat-4); }
.cat-badge--5 { --cat-color: var(--cat-5); }
.cat-badge--6 { --cat-color: var(--cat-6); }

.category-card.cat-badge--1, .category-card.cat-badge--2, .category-card.cat-badge--3,
.category-card.cat-badge--4, .category-card.cat-badge--5, .category-card.cat-badge--6 {
    border-top-color: var(--cat-color);
}

.category-card.cat-badge--1 .category-card__number, .category-card.cat-badge--2 .category-card__number,
.category-card.cat-badge--3 .category-card__number, .category-card.cat-badge--4 .category-card__number,
.category-card.cat-badge--5 .category-card__number, .category-card.cat-badge--6 .category-card__number {
    color: color-mix(in srgb, var(--cat-color) 22%, transparent);
}

.category-card.cat-badge--1 .category-card__icon, .category-card.cat-badge--2 .category-card__icon,
.category-card.cat-badge--3 .category-card__icon, .category-card.cat-badge--4 .category-card__icon,
.category-card.cat-badge--5 .category-card__icon, .category-card.cat-badge--6 .category-card__icon {
    background: color-mix(in srgb, var(--cat-color) 14%, white);
    color: var(--cat-color);
}

.category-card.cat-badge--1:hover, .category-card.cat-badge--2:hover, .category-card.cat-badge--3:hover,
.category-card.cat-badge--4:hover, .category-card.cat-badge--5:hover, .category-card.cat-badge--6:hover {
    border-color: color-mix(in srgb, var(--cat-color) 40%, rgba(32, 213, 232, 0.2));
    box-shadow: 0 20px 40px color-mix(in srgb, var(--cat-color) 22%, transparent);
}

/* =========================================================
   CTA blocks
========================================================= */
.cta--gradient { background: var(--gradient); }

.cta__inner { text-align: center; max-width: 640px; margin: 0 auto; }

.cta__title { color: var(--white); font-size: clamp(26px, 3.6vw, 36px); margin-bottom: 14px; }

.cta__title--dark { color: var(--navy); }

.cta__desc { color: rgba(255, 255, 255, 0.8); margin-bottom: 28px; }

.cta__desc--dark { color: var(--text-muted); }

.cta--light { background: var(--white); }

.cta__actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* =========================================================
   Event Highlight (landing page)
========================================================= */
.event-highlight { background: var(--white); }

.event-highlight__card {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 32px;
    align-items: center;
    background: var(--bg);
    border: 1px solid rgba(32, 213, 232, 0.2);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
    padding: 36px;
    margin-bottom: 24px;
}

.event-highlight__info h3 { font-size: 24px; margin: 12px 0; }
.event-highlight__desc { color: var(--text-muted); margin-bottom: 20px; line-height: 1.6; }

.event-highlight__info .event-badge {
    font-size: 12px; font-weight: 700; padding: 4px 12px; border-radius: 999px; color: var(--white);
    display: inline-block; margin-right: 8px;
}
.event-highlight__info .event-badge--online { background: var(--cyan); color: var(--navy); }
.event-highlight__info .event-badge--offline { background: var(--navy); }
.event-highlight__info .event-badge--hybrid { background: linear-gradient(135deg, var(--tech-blue), var(--cyan)); }
.event-highlight__info .event-type {
    font-family: var(--font-heading); font-size: 12px; font-weight: 600; text-transform: uppercase;
    letter-spacing: 0.05em; color: var(--tech-blue);
}
.event-highlight__info .event-meta {
    display: flex; flex-wrap: wrap; gap: 14px; color: var(--text-muted); font-size: 13.5px; margin-top: 10px;
}
.event-highlight__info .event-meta i { color: var(--tech-blue); }

.countdown-box--event { max-width: none; margin: 0; }

.event-highlight__more { text-align: center; }
.event-highlight__more a { color: var(--tech-blue); font-weight: 600; }

@media (max-width: 860px) {
    .event-highlight__card { grid-template-columns: 1fr; }
}

/* =========================================================
   Timeline
========================================================= */
.timeline-section { background: var(--bg); }

.countdown-box {
    max-width: 620px;
    margin: 0 auto 64px;
    text-align: center;
    background: var(--navy);
    border-radius: var(--radius);
    padding: 28px 24px;
    box-shadow: 0 20px 40px rgba(6, 43, 80, 0.25);
}

.countdown-box__label {
    color: var(--light-cyan);
    font-family: var(--font-heading);
    font-size: 14px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 18px;
}

.countdown-timer { display: flex; justify-content: center; gap: 16px; }

.countdown-timer__item {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(32, 213, 232, 0.3);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    min-width: 72px;
}

.countdown-timer__item span {
    display: block;
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    color: var(--cyan);
}

.countdown-timer__item small { color: rgba(255, 255, 255, 0.6); font-size: 12px; }

.timeline { position: relative; padding-left: 0; }

.timeline__line {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 3px;
    transform: translateX(-50%);
    background: rgba(8, 124, 193, 0.15);
    border-radius: 4px;
    overflow: hidden;
}

.timeline__progress {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 0%;
    background: linear-gradient(180deg, var(--navy), var(--tech-blue), var(--cyan));
    box-shadow: 0 0 14px rgba(32, 213, 232, 0.6);
    transition: height 0.3s ease-out;
}

.timeline__item {
    position: relative;
    width: 50%;
    padding: 0 48px 64px;
}

.timeline__item--left { left: 0; text-align: right; }
.timeline__item--right { left: 50%; text-align: left; }

.timeline__dot {
    position: absolute;
    top: 4px;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--white);
    border: 2px solid var(--cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--navy);
    box-shadow: 0 0 0 6px var(--bg), 0 0 16px rgba(32, 213, 232, 0.5);
    z-index: 1;
}

.timeline__item--left .timeline__dot { right: -22px; }
.timeline__item--right .timeline__dot { left: -22px; }

.timeline__card {
    display: inline-block;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(32, 213, 232, 0.3);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow-soft);
    text-align: left;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.timeline__card:hover {
    transform: translateY(-6px);
    border-color: var(--cyan);
    box-shadow: 0 18px 36px rgba(32, 213, 232, 0.2);
}

.timeline__card:hover .timeline__card-icon { transform: scale(1.15); }

.timeline__card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }

.timeline__card-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--gradient-soft);
    color: var(--tech-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: transform var(--transition);
}

.status-badge {
    font-size: 11.5px;
    font-weight: 700;
    font-family: var(--font-heading);
    padding: 5px 12px;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.status-badge--segera-hadir { background: rgba(8, 124, 193, 0.12); color: var(--tech-blue); }

.status-badge--sedang-berlangsung {
    background: rgba(32, 213, 232, 0.16);
    color: #0b7d8c;
    animation: pulseBadge 1.8s ease-in-out infinite;
}

.status-badge--selesai { background: rgba(107, 114, 128, 0.14); color: #4b5563; }

@keyframes pulseBadge {
    0%, 100% { box-shadow: 0 0 0 0 rgba(32, 213, 232, 0.5); }
    50% { box-shadow: 0 0 0 6px rgba(32, 213, 232, 0); }
}

.timeline__tag {
    display: inline-block;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--tech-blue);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 8px;
}

.timeline__title { font-size: 18px; margin-bottom: 8px; }

.timeline__date {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13.5px;
    color: var(--tech-blue);
    font-weight: 600;
    margin-bottom: 10px;
}

.timeline__desc { color: var(--text-muted); font-size: 14.5px; margin-bottom: 12px; }

/* =========================================================
   Accordion (Requirements & FAQ)
========================================================= */
.accordion { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }

.accordion__item {
    background: var(--white);
    border: 1px solid rgba(32, 213, 232, 0.2);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: border-color var(--transition);
}

.accordion__item--active { border-color: var(--cyan); box-shadow: 0 10px 24px rgba(32, 213, 232, 0.12); }

.accordion__trigger {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 18px 22px;
    text-align: left;
}

.accordion__number { font-size: 20px; color: var(--tech-blue); flex-shrink: 0; }

.accordion__title { flex: 1; font-family: var(--font-heading); font-weight: 600; font-size: 15.5px; color: var(--navy); }

.accordion__chevron { font-size: 20px; color: var(--tech-blue); transition: transform var(--transition); flex-shrink: 0; }

.accordion__item--active .accordion__chevron { transform: rotate(180deg); }

.accordion__panel { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }

.accordion__panel-inner { padding: 0 22px 22px 22px; color: var(--text-muted); font-size: 14.5px; }

.accordion__panel-inner strong { color: var(--navy); }

/* =========================================================
   Registration
========================================================= */
.registration__card {
    background: var(--gradient);
    border-radius: 28px;
    padding: 56px;
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
    box-shadow: 0 30px 60px rgba(6, 43, 80, 0.3);
}

.registration__title { color: var(--white); font-size: clamp(26px, 3.4vw, 34px); margin-bottom: 14px; }

.registration__desc { color: rgba(255, 255, 255, 0.8); margin-bottom: 24px; }

.registration__info .badge--outline {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.35);
    color: var(--light-cyan);
    margin-bottom: 16px;
}

/* =========================================================
   Contact
========================================================= */
.contact__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.contact-card {
    background: var(--white);
    border: 1px solid rgba(32, 213, 232, 0.2);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.contact-card:hover { transform: translateY(-6px); border-color: var(--cyan); box-shadow: 0 16px 32px rgba(32, 213, 232, 0.18); }

.contact-card__avatar {
    width: 64px;
    height: 64px;
    margin: 0 auto 14px;
    border-radius: 50%;
    background: var(--gradient-soft);
    color: var(--tech-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
}

.contact-card h3 { font-size: 18px; margin-bottom: 6px; }

.contact-card__area { color: var(--text-muted); font-size: 13.5px; margin-bottom: 4px; }

.contact-card__phone { font-family: var(--font-heading); color: var(--tech-blue); font-weight: 600; margin-bottom: 18px; }

/* =========================================================
   Final CTA
========================================================= */
.final-cta {
    background: linear-gradient(135deg, #041f3a, var(--navy), var(--tech-blue));
    text-align: center;
    overflow: hidden;
}

.final-cta__glow {
    position: absolute;
    top: 50%; left: 50%;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(32, 213, 232, 0.35), transparent 70%);
    transform: translate(-50%, -50%);
    animation: pulseGlow 4s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.final-cta__inner { position: relative; z-index: 1; }

.final-cta__title {
    color: var(--white);
    font-size: clamp(30px, 5vw, 52px);
    margin-bottom: 18px;
}

.final-cta__desc { color: rgba(255, 255, 255, 0.8); margin-bottom: 32px; font-size: 17px; }

/* =========================================================
   Footer
========================================================= */
.footer { background: var(--navy); color: rgba(255, 255, 255, 0.75); padding: 72px 0 0; }

.footer__inner {
    display: grid;
    grid-template-columns: 1.6fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logos { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.footer__logo { display: block; width: auto; object-fit: contain; }
.footer__logo--ug { height: 44px; }
.footer__logo--usb { height: 52px; }

.footer__wordmark { font-family: var(--font-heading); font-weight: 700; color: var(--white); font-size: 18px; }

.footer__brand p { font-size: 14px; margin-bottom: 16px; }

.footer__social { display: flex; gap: 12px; }

.footer__social a {
    width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: background var(--transition), border-color var(--transition);
}

.footer__social a:hover { background: var(--cyan); border-color: var(--cyan); color: var(--navy); }

.footer__links h4 { color: var(--white); font-size: 15px; margin-bottom: 18px; }

.footer__links { display: flex; flex-direction: column; gap: 10px; }

.footer__links a { font-size: 14px; transition: color var(--transition); }

.footer__links a:hover { color: var(--cyan); }

.footer__bottom { text-align: center; padding: 22px 0; font-size: 13px; color: rgba(255, 255, 255, 0.5); }

/* =========================================================
   Floating elements
========================================================= */
.floating-whatsapp {
    position: fixed;
    bottom: 28px;
    right: 28px;
    z-index: 900;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: #25D366;
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    box-shadow: 0 10px 24px rgba(37, 211, 102, 0.45);
    transition: transform var(--transition);
}

.floating-whatsapp:hover { transform: scale(1.08); }

.back-to-top {
    position: fixed;
    bottom: 96px;
    right: 28px;
    z-index: 899;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--navy);
    color: var(--cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity var(--transition), visibility var(--transition), transform var(--transition);
}

.back-to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }

/* =========================================================
   Responsive
========================================================= */
@media (max-width: 1024px) {
    .stats__grid,
    .categories__grid,
    .contact__grid { grid-template-columns: repeat(2, 1fr); }

    .about__inner,
    .hero__inner { grid-template-columns: 1fr; }

    .hero__visual { height: 360px; order: -1; }

    .registration__card { padding: 40px 28px; }

    .footer__inner { grid-template-columns: 1fr; text-align: center; }

    .footer__logos, .footer__social { justify-content: center; }
}

@media (max-width: 860px) {
    .navbar__menu {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: min(78vw, 320px);
        background: var(--navy);
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        gap: 26px;
        padding: 40px;
        transform: translateX(100%);
        transition: transform var(--transition);
    }

    .navbar__menu--open { transform: translateX(0); }

    .navbar__menu .navbar__link { color: var(--white); font-size: 17px; }

    .navbar__cta { margin-left: 0; }

    .navbar__toggle { display: flex; }

    .timeline__line { left: 20px; }

    .timeline__item,
    .timeline__item--left,
    .timeline__item--right {
        width: 100%;
        left: 0;
        text-align: left;
        padding: 0 0 40px 56px;
    }

    .timeline__item--left .timeline__dot,
    .timeline__item--right .timeline__dot { left: -2px; right: auto; }
}

@media (max-width: 640px) {
    section { padding: 64px 0; }

    .stats__grid,
    .categories__grid,
    .contact__grid { grid-template-columns: 1fr; }

    .hero { padding-top: 120px; }

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

    .cta__actions { flex-direction: column; }

    .countdown-timer { gap: 10px; }

    .countdown-timer__item { min-width: 60px; padding: 10px 12px; }

    .countdown-timer__item span { font-size: 22px; }
}