/* ===== Variables ===== */
:root {
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-card: #1a2030;
  --bg-card-hover: #1f2740;
  --border: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(255, 215, 0, 0.25);
  --yellow: #ffd700;
  --yellow-bright: #ffe033;
  --orange: #ff8c00;
  --orange-btn: linear-gradient(135deg, #ff9500 0%, #ffb800 100%);
  --text-primary: #ffffff;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --sidebar-width: 64px;
  --header-height: 64px;
  --radius: 14px;
  --radius-lg: 20px;
  --shadow-glow: 0 0 30px rgba(255, 215, 0, 0.15);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 0;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  align-items: center;
}

.sidebar-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all 0.2s;
}

.sidebar-link svg {
  width: 22px;
  height: 22px;
}

.sidebar-link:hover,
.sidebar-link.active {
  background: rgba(255, 215, 0, 0.12);
  color: var(--yellow);
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  height: var(--header-height);
  background: rgba(13, 17, 23, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 32px;
  z-index: 90;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.logo__img {
  height: 36px;
  width: auto;
  display: block;
}

.header-actions {
  display: flex;
  gap: 12px;
}

.btn {
  border: none;
  cursor: pointer;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: 10px;
  padding: 10px 24px;
  transition: transform 0.15s, box-shadow 0.15s;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--register {
  background: var(--orange-btn);
  color: #000;
  box-shadow: 0 4px 16px rgba(255, 149, 0, 0.35);
}

.btn--yellow {
  background: var(--yellow);
  color: #000;
  box-shadow: 0 4px 16px rgba(255, 215, 0, 0.35);
}

.btn--yellow:hover {
  background: var(--yellow-bright);
}

.btn--login {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

/* ===== Main ===== */
.main {
  margin-left: var(--sidebar-width);
  margin-top: var(--header-height);
  padding: 32px;
  max-width: 1400px;
}

/* Page Hero */
.page-hero {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 32px 48px;
  background: linear-gradient(160deg, #0a1208 0%, #0d1117 45%, #111820 100%);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 28px 32px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 80% at 0% 100%, rgba(255, 210, 0, 0.07) 0%, transparent 55%),
    radial-gradient(ellipse 40% 60% at 100% 0%, rgba(255, 210, 0, 0.04) 0%, transparent 50%);
  pointer-events: none;
  animation: heroGlow 6s ease-in-out infinite alternate;
}

.page-hero::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -60%;
  width: 40%;
  height: 200%;
  background: linear-gradient(105deg, transparent 40%, rgba(255, 210, 0, 0.04) 50%, transparent 60%);
  transform: skewX(-20deg);
  animation: heroShine 5s ease-in-out infinite;
  pointer-events: none;
}

@keyframes heroGlow {
  0% { opacity: 0.6; }
  100% { opacity: 1; }
}

@keyframes heroShine {
  0%, 100% { left: -60%; opacity: 0; }
  10% { opacity: 1; }
  50% { left: 120%; opacity: 1; }
  60% { opacity: 0; }
}

.page-hero__watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 900;
  font-style: italic;
  letter-spacing: 0.08em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(80, 120, 40, 0.12);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  animation: watermarkPulse 8s ease-in-out infinite;
}

@keyframes watermarkPulse {
  0%, 100% {
    opacity: 0.35;
    transform: translate(-50%, -50%) scale(1);
    -webkit-text-stroke-color: rgba(80, 120, 40, 0.12);
  }
  50% {
    opacity: 0.55;
    transform: translate(-50%, -50%) scale(1.02);
    -webkit-text-stroke-color: rgba(255, 210, 0, 0.08);
  }
}

.page-hero__content {
  position: relative;
  z-index: 1;
}

.page-hero__eyebrow {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
  animation: fadeSlideUp 0.7s ease-out both;
}

.page-hero__title {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 4px;
  line-height: 1;
  margin-bottom: 10px;
}

.page-hero__title-line {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 900;
  font-style: italic;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  animation: fadeSlideUp 0.7s ease-out both;
}

.page-hero__title-line:not(.page-hero__title-line--accent) {
  animation-delay: 0.2s;
}

.page-hero__title-line--accent {
  color: var(--yellow);
  background: linear-gradient(
    90deg,
    var(--yellow) 0%,
    #fff5a0 40%,
    var(--yellow) 60%,
    #e6b800 100%
  );
  background-size: 200% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation:
    fadeSlideUp 0.7s ease-out both,
    titleShimmer 3s linear infinite;
  animation-delay: 0.1s, 0.8s;
}

@keyframes titleShimmer {
  0% { background-position: 200% center; }
  100% { background-position: -200% center; }
}

.page-hero__subtitle {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  animation: fadeSlideUp 0.7s ease-out 0.25s both;
}

@keyframes fadeSlideUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-hero__perks {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  z-index: 1;
  border-left: 1px solid rgba(255, 255, 255, 0.08);
  padding-left: 28px;
  min-width: 260px;
}

.page-hero__perks::before {
  content: '';
  position: absolute;
  left: -1px;
  top: 0;
  width: 2px;
  height: 0;
  background: linear-gradient(180deg, var(--yellow), transparent);
  animation: perkLineGrow 1.2s ease-out 0.4s forwards;
}

@keyframes perkLineGrow {
  to { height: 100%; }
}

.page-hero__perk {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  line-height: 1.35;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  animation: perkSlideIn 0.6s ease-out both;
}

.page-hero__perk:nth-child(1) { animation-delay: 0.5s; }
.page-hero__perk:nth-child(2) { animation-delay: 0.65s; }
.page-hero__perk:nth-child(3) { animation-delay: 0.8s; }

@keyframes perkSlideIn {
  from {
    opacity: 0;
    transform: translateX(24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.page-hero__perk:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.page-hero__perk:first-child {
  padding-top: 0;
}

.page-hero__perk-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--yellow);
  color: #000;
  border-radius: 50%;
  animation: iconPulse 2.5s ease-in-out infinite;
  box-shadow: 0 0 0 0 rgba(255, 210, 0, 0.4);
}

.page-hero__perk:nth-child(1) .page-hero__perk-icon { animation-delay: 0s; }
.page-hero__perk:nth-child(2) .page-hero__perk-icon { animation-delay: 0.4s; }
.page-hero__perk:nth-child(3) .page-hero__perk-icon { animation-delay: 0.8s; }

@keyframes iconPulse {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(255, 210, 0, 0.35);
  }
  50% {
    transform: scale(1.08);
    box-shadow: 0 0 12px 2px rgba(255, 210, 0, 0.25);
  }
}

.page-hero__perk:hover .page-hero__perk-icon {
  animation: iconPop 0.35s ease-out;
}

@keyframes iconPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.15); }
  100% { transform: scale(1.05); }
}

.page-hero__perk:hover {
  color: var(--text-primary);
  transition: color 0.25s ease;
}

.page-hero__perk-icon svg {
  width: 14px;
  height: 14px;
}

.page-hero__perk-icon--dollar {
  font-size: 0.85rem;
  font-weight: 800;
  line-height: 1;
}

.page-hero__perk-icon--bolt svg {
  width: 13px;
  height: 13px;
}

/* Filter Tabs */
.filter-tabs {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.filter-tab {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  padding: 10px 20px;
  border-radius: 10px;
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-tab:hover {
  border-color: rgba(255, 215, 0, 0.3);
  color: var(--text-primary);
}

.filter-tab.active {
  background: linear-gradient(135deg, rgba(255, 215, 0, 0.2) 0%, rgba(255, 140, 0, 0.1) 100%);
  border-color: rgba(255, 215, 0, 0.4);
  color: var(--yellow);
}

/* ===== Promo Grid ===== */
.promo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.promo-empty {
  color: var(--text-muted);
  text-align: center;
  padding: 48px 24px;
  grid-column: 1 / -1;
  font-size: 0.95rem;
}

.promo-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}

.promo-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.promo-card__banner {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #000;
}

.promo-card__banner-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.35s ease;
}

.promo-card:hover .promo-card__banner-img {
  transform: scale(1.04);
}

.promo-card__body {
  padding: 20px;
}

.promo-card__category {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 6px;
}

.promo-card__title {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--yellow);
  margin-bottom: 8px;
}

.promo-card__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 16px;
}

.promo-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.promo-card__cta {
  background: rgba(255, 215, 0, 0.12);
  color: var(--yellow);
  border: 1px solid rgba(255, 215, 0, 0.3);
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  pointer-events: none;
}

.promo-card__tag {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(6px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 640px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  transform: scale(0.92) translateY(20px);
  transition: transform 0.3s;
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border: none;
  background: rgba(0, 0, 0, 0.5);
  color: #fff;
  font-size: 1.5rem;
  line-height: 1;
  border-radius: 50%;
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.modal__close:hover {
  background: rgba(255, 255, 255, 0.15);
}

.modal__banner {
  position: relative;
  overflow: hidden;
  background: #000;
}

.modal__banner .promo-card__banner-img--modal {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;
}

.modal__body {
  padding: 28px;
}

.modal__category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--orange);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.modal__title {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--yellow);
  margin-bottom: 12px;
}

.modal__desc {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.modal__highlights {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.modal__highlight {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255, 215, 0, 0.06);
  border: 1px solid rgba(255, 215, 0, 0.15);
  border-radius: 10px;
  padding: 12px 16px;
  font-size: 0.875rem;
}

.modal__highlight-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.modal__terms h3 {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.modal__terms ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.modal__terms li {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.5;
  padding-left: 16px;
  position: relative;
}

.modal__terms li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--yellow);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar {
    display: none;
  }

  .header {
    left: 0;
    height: 52px;
    padding: 0 12px;
  }

  .logo__img {
    height: 26px;
  }

  .header-actions .btn {
    padding: 6px 10px;
    font-size: 0.6875rem;
    border-radius: 8px;
    white-space: nowrap;
  }

  .main {
    margin-left: 0;
    margin-top: 52px;
    padding: 16px;
  }

  .page-hero {
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 20px;
  }

  .page-hero__title {
    justify-content: center;
  }

  .page-hero__perks {
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-left: 0;
    padding-top: 16px;
    min-width: 0;
  }

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