/* ==========================================================================
   UNDIAN TABUNGAN UKHUWAH 2026 - BANK MAU SYARIAH
   Style: CSS3 Native (No Framework)
   Tema: Premium, Elegan, Modern, Dominan Putih, Coklat (#6F4E37), Emas (#D4AF37)
   ========================================================================== */

/* 1. IMPORTS & CSS VARIABLES */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Main Colors - Vibrant Bank Syariah Theme (Emerald Green & Gold) */
  --color-white: #FFFFFF;
  --color-bg-light: #F7FAF8;
  --color-bg-alt: #EEF6F1;
  --color-border-light: #D5E8DD;
  
  --color-emerald: #006837;
  --color-emerald-dark: #004D28;
  --color-emerald-deep: #00331A;
  --color-emerald-light: #E6F4ED;
  --color-emerald-accent: #008846;
  
  --color-brown: #006837;
  --color-brown-dark: #00331A;
  --color-brown-deep: #002412;
  --color-brown-light: #2D6A4F;
  
  --color-gold: #D4AF37;
  --color-gold-bright: #FFD700;
  --color-gold-dark: #B8860B;
  --color-gold-light: #FFF9E6;
  --gradient-gold: linear-gradient(135deg, #FFD700 0%, #F5C02A 50%, #D4AF37 100%);
  --gradient-gold-badge: linear-gradient(to right, #FFD700, #B8860B);
  --gradient-gold-hover: linear-gradient(135deg, #FFE14D 0%, #FFC820 50%, #D4AF37 100%);
  --gradient-emerald: linear-gradient(135deg, #006837 0%, #004D28 100%);
  
  --color-text-main: #0B2518;
  --color-text-muted: #3D604E;
  --color-text-subtle: #6B8F7C;
  --color-gray-disabled: #94B0A0;
  --color-bg-disabled: #E0EBE4;
  
  --color-live-red: #EF4444;
  --color-live-red-dark: #DC2626;

  /* Typography */
  --font-main: 'Poppins', 'Trebuchet MS', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  
  /* Shadows & Radius */
  --shadow-sm: 0 2px 8px rgba(111, 78, 55, 0.05);
  --shadow-md: 0 10px 30px -10px rgba(111, 78, 55, 0.15);
  --shadow-lg: 0 16px 36px rgba(111, 78, 55, 0.20);
  --shadow-gold: 0 10px 25px rgba(212, 175, 55, 0.35);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Container Width */
  --container-max-w: 1200px;
}

/* 2. BASE & RESET */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background-color: var(--color-bg-light);
  color: var(--color-text-main);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

ul {
  list-style: none;
}

/* 3. LAYOUT UTILITIES */
.container {
  width: 100%;
  max-width: var(--container-max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

.section {
  padding: 4.5rem 0;
  position: relative;
}

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3rem auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  background-color: rgba(212, 175, 55, 0.12);
  color: var(--color-brown-dark);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-brown-dark);
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--color-text-muted);
}

/* 4. PAGE LOADER */
#page-loader {
  position: fixed;
  inset: 0;
  background-color: var(--color-white);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

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

.loader-spinner {
  width: 50px;
  height: 50px;
  border: 4px solid var(--color-gold-light);
  border-top-color: var(--color-gold);
  border-right-color: var(--color-brown);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}

.loader-text {
  margin-top: 1.25rem;
  font-weight: 600;
  color: var(--color-brown);
  letter-spacing: 0.05em;
}

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

/* 5. STICKY HEADER */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.18);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background-color: rgba(255, 255, 255, 0.98);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.brand-title {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-brown-dark);
  line-height: 1.1;
  letter-spacing: -0.01em;
}

.brand-sub {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-gold-dark);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Nav Desktop */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-main);
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-gold);
  transition: width var(--transition-fast);
  border-radius: var(--radius-full);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-brown-dark);
  font-weight: 600;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Mobile Hamburger */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 32px;
  height: 22px;
  background: transparent;
  padding: 0;
  z-index: 1002;
}

.hamburger-line {
  width: 100%;
  height: 3px;
  background-color: var(--color-brown-dark);
  border-radius: 3px;
  transition: all var(--transition-normal);
}

.hamburger-btn.is-active .hamburger-line:nth-child(1) {
  transform: translateY(9.5px) rotate(45deg);
}

.hamburger-btn.is-active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.hamburger-btn.is-active .hamburger-line:nth-child(3) {
  transform: translateY(-9.5px) rotate(-45deg);
}

/* Mobile Drawer Overlay */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(45, 30, 20, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.mobile-nav-overlay.is-active {
  opacity: 1;
  visibility: visible;
}

/* 6. HERO SECTION */
.hero-section {
  padding: 4.5rem 0 5.5rem 0;
  background-color: var(--color-bg-light);
  background-image: radial-gradient(var(--color-brown) 0.5px, transparent 0.5px);
  background-size: 24px 24px;
  position: relative;
  overflow: hidden;
}

.hero-background-ornament {
  position: absolute;
  inset: 0;
  opacity: 0.05;
  background-image: url('../img/hero.jpg');
  background-size: cover;
  background-position: center;
  pointer-events: none;
}

.hero-container {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 860px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1.25rem;
  background: var(--color-gold-light);
  border: 1px solid rgba(212, 175, 55, 0.4);
  border-radius: var(--radius-full);
  color: var(--color-brown-dark);
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  letter-spacing: 0.03em;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background-color: var(--color-gold);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-gold);
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  color: var(--color-brown-dark);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.hero-title-highlight {
  background: var(--gradient-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  font-weight: 400;
  line-height: 1.6;
  margin-bottom: 2.5rem;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

.hero-date-tag {
  display: inline-block;
  font-weight: 700;
  color: var(--color-brown-dark);
  background-color: var(--color-gold-light);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(212, 175, 55, 0.3);
}

/* COUNTDOWN TIMER */
.countdown-wrapper {
  margin-bottom: 3rem;
}

.countdown-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  max-width: 620px;
  margin: 0 auto;
}

.countdown-box {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem 0.75rem;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), border-color var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.countdown-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-gold);
}

.countdown-box:hover {
  transform: translateY(-4px);
  border-color: var(--color-gold);
}

.countdown-number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-brown);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.countdown-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.5rem;
}

.countdown-finished-msg {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-brown-dark);
  background: var(--color-gold-light);
  border: 1px solid var(--color-gold);
  padding: 1rem 2rem;
  border-radius: var(--radius-md);
  display: inline-block;
  box-shadow: var(--shadow-sm);
}

/* 7. LIVE BUTTON SECTION */
.live-button-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.btn-live {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
  padding: 1.15rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all var(--transition-normal);
  text-decoration: none;
  min-width: 280px;
  position: relative;
  box-shadow: var(--shadow-md);
}

/* Active State - Rich Organic Brown with Gold Highlights */
.btn-live-active {
  background-color: var(--color-brown);
  color: var(--color-white);
  border: 2px solid var(--color-gold);
}

.btn-live-active:hover {
  background-color: var(--color-brown-dark);
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 14px 30px rgba(111, 78, 55, 0.35);
}

.btn-live-active .live-indicator {
  width: 12px;
  height: 12px;
  background-color: var(--color-live-red);
  border-radius: 50%;
  animation: pulse-red 1.5s infinite;
}

@keyframes pulse-red {
  0% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(255, 0, 0, 0.7);
  }
  70% {
    transform: scale(1);
    box-shadow: 0 0 0 8px rgba(255, 0, 0, 0);
  }
  100% {
    transform: scale(0.95);
    box-shadow: 0 0 0 0 rgba(255, 0, 0, 0);
  }
}

/* Disabled State */
.btn-live-disabled {
  background-color: var(--color-bg-disabled);
  color: var(--color-text-muted);
  cursor: not-allowed;
  box-shadow: none;
  border: 2px solid #D0D0D0;
}

/* Documentation State */
.btn-live-doc {
  background-color: var(--color-brown-dark);
  color: var(--color-gold-light);
  border: 2px solid var(--color-gold);
}

.btn-live-doc:hover {
  background-color: var(--color-brown);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.live-btn-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.live-btn-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* 8. HADIAH UTAMA SECTION */
.prizes-grid-main {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.prize-card {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
  position: relative;
}

.prize-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-gold);
}

.prize-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 10;
  background: var(--gradient-gold-badge);
  color: var(--color-white);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  box-shadow: 0 4px 12px rgba(111, 78, 55, 0.2);
}

.prize-card-img-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background: radial-gradient(circle at center, #FFFFFF 0%, #FAF8F5 100%);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.prize-card-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform var(--transition-normal);
}

.prize-card:hover .prize-card-img {
  transform: scale(1.06);
}

.prize-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  text-align: center;
}

.prize-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-brown-dark);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.prize-desc {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin-top: auto;
}

/* 9. HADIAH HIBURAN SECTION */
.prizes-grid-secondary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.secondary-prize-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

.secondary-prize-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-gold);
}

.star-icon-badge {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  color: var(--color-gold);
  font-size: 1.1rem;
  line-height: 1;
}

.sec-prize-img-wrapper {
  width: 100%;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  padding: 0.5rem;
}

.sec-prize-img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
  transition: transform var(--transition-normal);
}

.secondary-prize-card:hover .sec-prize-img {
  transform: scale(1.05);
}

.sec-prize-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-brown-dark);
  margin-bottom: 0.25rem;
}

.sec-prize-desc {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* 10. CARA MENONTON SECTION */
.steps-wrapper {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  position: relative;
  margin-top: 2rem;
}

.step-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.25rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  transition: transform var(--transition-normal);
}

.step-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-gold);
}

.step-number {
  width: 44px;
  height: 44px;
  background: var(--gradient-gold);
  color: var(--color-brown-deep);
  border-radius: 50%;
  font-weight: 800;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  box-shadow: 0 4px 10px rgba(212, 175, 55, 0.3);
}

.step-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 0.75rem;
  color: var(--color-brown);
}

.step-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-brown-dark);
  margin-bottom: 0.5rem;
}

.step-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  font-size: 1.5rem;
  position: absolute;
  right: -1.25rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
}

.step-card:last-child .step-arrow {
  display: none;
}

/* 11. FAQ SECTION */
.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  border: 1px solid rgba(212, 175, 55, 0.2);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.faq-item.is-open {
  border-color: var(--color-gold);
}

.faq-header {
  width: 100%;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-brown-dark);
  cursor: pointer;
  background: transparent;
  transition: background-color var(--transition-fast);
}

.faq-header:hover {
  background-color: var(--color-bg-alt);
}

.faq-icon {
  width: 24px;
  height: 24px;
  color: var(--color-gold-dark);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
  margin-left: 1rem;
}

.faq-item.is-open .faq-icon {
  transform: rotate(180deg);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.98rem;
  line-height: 1.65;
}

.faq-item.is-open .faq-body {
  padding: 0 1.5rem 1.25rem 1.5rem;
  max-height: 300px;
}

/* 12. FOOTER */
.site-footer {
  background-color: var(--color-brown-deep);
  color: #E2D7CE;
  padding: 3.5rem 0 1.5rem 0;
  margin-top: auto;
  border-top: 3px solid var(--color-gold);
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-logo-img {
  height: 42px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-brand-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #FFF;
}

.footer-desc {
  font-size: 0.9rem;
  color: #BBB0A5;
  line-height: 1.6;
  max-width: 420px;
}

.footer-links-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-gold);
  margin-bottom: 1.2rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: #D4C8BC;
  font-size: 0.92rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-gold);
}

.footer-bottom {
  border-top: 1px solid rgba(212, 175, 55, 0.2);
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
}

.copyright-text {
  font-size: 0.88rem;
  color: #9E9185;
}

.ojk-disclaimer {
  font-size: 0.8rem;
  color: #8C7E72;
}

/* 13. BACK TO TOP BUTTON */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: var(--gradient-gold);
  color: var(--color-brown-deep);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  z-index: 990;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  border: 1px solid #FFF;
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
}

/* 14. SCROLL REVEAL ANIMATIONS */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* 15. RESPONSIVE BREAKPOINTS (Mobile First Focus) */

/* Mobile / Android default (up to 767px) */
@media (max-width: 767px) {
  .site-header {
    height: 70px;
  }
  
  .hamburger-btn {
    display: flex;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    right: -100%;
    width: 280px;
    height: calc(100vh - 70px);
    background-color: var(--color-white);
    flex-direction: column;
    align-items: flex-start;
    padding: 2.5rem 2rem;
    gap: 1.5rem;
    box-shadow: -10px 0 30px rgba(0,0,0,0.15);
    transition: right var(--transition-normal);
    z-index: 1001;
  }
  
  .nav-menu.is-active {
    right: 0;
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .countdown-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem;
  }
  
  .countdown-number {
    font-size: 2rem;
  }
  
  /* Grid Breakpoints as per specs: Mobile 1 column */
  .prizes-grid-main {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .prizes-grid-secondary {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  
  .steps-wrapper {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .step-arrow {
    right: auto;
    bottom: -1.25rem;
    top: auto;
    left: 50%;
    transform: translateX(-50%) rotate(90deg);
  }
  
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .btn-live {
    width: 100%;
    padding: 1.1rem 1.5rem;
    font-size: 1rem;
  }
}

/* Tablet (768px - 1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
  /* Grid Specs: Tablet 2 column for Hadiah Utama, 2 column for Secondary */
  .prizes-grid-main {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .prizes-grid-secondary {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .steps-wrapper {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem 1.5rem;
  }
  
  .step-card:nth-child(2) .step-arrow {
    display: none;
  }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
  /* Hadiah Utama 3 or 4 cols, Hadiah Hiburan 4 cols */
  .prizes-grid-main {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .prizes-grid-secondary {
    grid-template-columns: repeat(4, 1fr);
  }
}