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

:root {
  --bg-main: #07090d;
  --bg-secondary: #10141a;
  --bg-card: rgba(20, 24, 31, 0.85);
  --bg-card-2: rgba(255, 255, 255, 0.04);

  --text-main: #f5f7fa;
  --text-soft: #b6beca;
  --text-muted: #8f98a6;

  --silver: #c5ccd6;
  --silver-2: #9ea7b3;
  --border: rgba(255, 255, 255, 0.08);

  --accent: #dfe6ef;
  --accent-glow: rgba(196, 206, 220, 0.16);
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.28);
  --shadow-hover: 0 18px 45px rgba(0, 0, 0, 0.45);

  --success: #7ee0b1;
  --danger: #ff7676;
  --warning: #ffd479;

  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 14px;
  --radius-sm: 10px;

  --transition: all 0.35s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(circle at top right, rgba(111, 179, 125, 0.10), transparent 22%),
    radial-gradient(circle at bottom left, rgba(74, 105, 160, 0.12), transparent 26%),
    radial-gradient(circle at center, rgba(255, 255, 255, 0.03), transparent 45%),
    linear-gradient(180deg, #06070b 0%, #08101b 45%, #0b1320 100%);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
  transition: background 0.35s ease;
}

/* =========================
   Decorative Background
========================= */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  z-index: -3;
  opacity: 0.28;
  transition: transform 0.5s ease, opacity 0.5s ease, background 0.5s ease;
  will-change: transform, background;
}

.bg-glow-1 {
  width: 360px;
  height: 360px;
  background: rgba(105, 170, 130, 0.35);
  top: -80px;
  right: -100px;
}

.bg-glow-2 {
  width: 320px;
  height: 320px;
  background: rgba(75, 105, 165, 0.30);
  left: -100px;
  bottom: 40px;
}

.noise-layer {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.015), rgba(255,255,255,0.015));
  pointer-events: none;
  z-index: -2;
}

.container {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
}

/* =========================
   Utilities
========================= */
.glass {
  background: rgba(18, 22, 29, 0.72);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.fade-in {
  animation: fadeIn 1s ease both;
}

.fade-in-up {
  animation: fadeInUp 1s ease both;
}

.full-width {
  width: 100%;
}

.hidden {
  display: none !important;
}

/* =========================
   Header
========================= */
.site-header {
  width: min(1240px, calc(100% - 24px));
  margin: 18px auto 0;
  padding: 18px 22px;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  position: sticky;
  top: 12px;
  z-index: 50;
}

.header-right,
.header-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.brand {
  font-size: 1.35rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-main);
}

.brand i {
  color: var(--silver);
  text-shadow: 0 0 18px rgba(255,255,255,0.18);
}

/* =========================
   Buttons
========================= */
button,
a {
  font-family: inherit;
}

.primary-btn,
.secondary-btn,
.google-btn,
.cart-toggle-btn,
.icon-btn {
  border: none;
  outline: none;
  cursor: pointer;
  transition: var(--transition);
}

.primary-btn,
.secondary-btn,
.google-btn,
.cart-toggle-btn {
  border-radius: 14px;
  padding: 12px 18px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.primary-btn {
  background: linear-gradient(135deg, #e6ebf2, #aeb8c5);
  color: #0a0c10;
  box-shadow: 0 10px 24px rgba(220, 228, 239, 0.18);
}

.primary-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 14px 30px rgba(220, 228, 239, 0.25);
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.secondary-btn:hover {
  background: rgba(255,255,255,0.08);
  transform: translateY(-2px);
}

.google-btn {
  background: #ffffff;
  color: #222;
  border: 1px solid #d9d9d9;
  box-shadow: 0 8px 20px rgba(255,255,255,0.08);
}

.google-btn i {
  color: #db4437;
  font-size: 1rem;
}

.google-btn:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 14px 28px rgba(255,255,255,0.12);
}

.cart-toggle-btn {
  background: linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
  color: var(--text-main);
  border: 1px solid var(--border);
}

.cart-toggle-btn b {
  min-width: 24px;
  height: 24px;
  border-radius: 999px;
  background: var(--accent);
  color: #111;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.cart-toggle-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255,255,255,0.08);
}

.icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(255,255,255,0.05);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.icon-btn:hover {
  transform: scale(1.06);
  background: rgba(255,255,255,0.08);
}

/* =========================
   User Status
========================= */
.user-status-wrap {
  margin-top: 18px;
}

.user-status {
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.user-status-info {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-soft);
}

.user-status-info i {
  color: var(--silver);
}

/* =========================
   Hero
========================= */
.hero {
  padding: 80px 0 40px;
}

.hero-content {
  position: relative;
  overflow: hidden;
  border-radius: 32px;
  padding: 46px 32px;
  background:
    linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02)),
    rgba(12, 15, 20, 0.85);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
}

.hero-content::before {
  content: "";
  position: absolute;
  inset: auto auto -80px -80px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(255,255,255,0.14), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  margin-bottom: 16px;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--silver);
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.03);
  font-size: 0.9rem;
}

.hero h2 {
  font-size: clamp(2rem, 4vw, 3.3rem);
  margin-bottom: 18px;
  line-height: 1.4;
}

.hero p {
  max-width: 760px;
  color: var(--text-soft);
  font-size: 1.05rem;
  line-height: 2;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.stat-card {
  padding: 18px;
  border-radius: 18px;
  background: rgba(255,255,255,0.035);
  border: 1px solid rgba(255,255,255,0.06);
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 28px rgba(255,255,255,0.05);
}

.stat-card strong {
  display: block;
  font-size: 1.4rem;
  margin-bottom: 6px;
  color: var(--accent);
}

.stat-card span {
  color: var(--text-soft);
  font-size: 0.92rem;
}

/* =========================
   Notice
========================= */
.notice-box {
  margin: 10px 0 36px;
  padding: 16px 18px;
  border-radius: 18px;
  color: var(--warning);
  border-right: 4px solid var(--warning);
  line-height: 1.9;
}

/* =========================
   Section Heading
========================= */
.section-heading {
  margin-bottom: 24px;
}

.section-heading span {
  color: var(--silver-2);
  font-size: 0.92rem;
  display: inline-block;
  margin-bottom: 8px;
}

.section-heading h3 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 10px;
}

.section-heading p {
  color: var(--text-soft);
  line-height: 1.9;
}

/* =========================
   Classes
========================= */
.classes-section {
  padding-bottom: 50px;
}

.classes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.class-card {
  position: relative;
  overflow: hidden;
  border-radius: 24px;
  padding: 22px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.05), rgba(255,255,255,0.02)),
    rgba(14, 18, 24, 0.92);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  transition: var(--transition);
}

.class-card::before {
  content: "";
  position: absolute;
  top: -30px;
  left: -30px;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,0.10), transparent 70%);
  opacity: 0.8;
}

.class-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-hover), 0 0 22px rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.14);
}

.class-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 20px;
}

.class-icon {
  width: 66px;
  height: 66px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  background: linear-gradient(135deg, rgba(255,255,255,0.12), rgba(255,255,255,0.04));
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--accent);
  transition: var(--transition);
}

.class-card:hover .class-icon {
  transform: scale(1.08);
  box-shadow: 0 0 26px rgba(255,255,255,0.08);
}

.class-price-badge {
  background: rgba(255,255,255,0.05);
  color: var(--silver);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  border: 1px solid rgba(255,255,255,0.06);
}

.class-card h4 {
  font-size: 1.15rem;
  margin-bottom: 12px;
}

.class-card p {
  color: var(--text-soft);
  line-height: 1.9;
  min-height: 60px;
  margin-bottom: 18px;
}

.class-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.class-cost {
  font-weight: 700;
  color: var(--accent);
}

/* =========================
   Owner Panel
========================= */
.owner-panel-section {
  padding-bottom: 60px;
}

#ownerPanelSection {
  display: none;
}

.owner-panel {
  border-radius: 24px;
  padding: 22px;
}

.owner-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
}

.owner-panel-header p {
  color: var(--text-soft);
  margin-top: 6px;
}

.owner-users-list {
  display: grid;
  gap: 16px;
}

.owner-user-card {
  border-radius: 18px;
  padding: 18px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
}

.owner-user-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.owner-user-email {
  font-weight: 700;
}

.owner-user-status {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.owner-badge {
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.82rem;
  border: 1px solid rgba(255,255,255,0.08);
}

.badge-online {
  color: var(--success);
}

.badge-banned {
  color: var(--danger);
}

.badge-owner {
  color: var(--warning);
}

.owner-user-cart {
  color: var(--text-soft);
  line-height: 1.9;
  margin-bottom: 14px;
}

.owner-user-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.danger-btn {
  background: rgba(255, 118, 118, 0.12);
  color: #ff9a9a;
  border: 1px solid rgba(255, 118, 118, 0.25);
}

.danger-btn:hover {
  background: rgba(255, 118, 118, 0.18);
}

.warning-btn {
  background: rgba(255, 212, 121, 0.12);
  color: #ffd479;
  border: 1px solid rgba(255, 212, 121, 0.25);
}

.warning-btn:hover {
  background: rgba(255, 212, 121, 0.18);
}

/* =========================
   Cart Sidebar
========================= */
.cart-sidebar {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
}

.cart-sidebar.active {
  pointer-events: auto;
}

.cart-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
  opacity: 0;
  transition: var(--transition);
}

.cart-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: min(420px, 100%);
  height: 100%;
  padding: 22px;
  transform: translateX(-100%);
  transition: var(--transition);
  border-radius: 0 24px 24px 0;
  display: flex;
  flex-direction: column;
}

.cart-sidebar.active .cart-overlay {
  opacity: 1;
}

.cart-sidebar.active .cart-panel {
  transform: translateX(0);
}

.cart-header,
.cart-footer {
  flex-shrink: 0;
}

.cart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}

.cart-header h3 {
  display: flex;
  align-items: center;
  gap: 10px;
}

.cart-body {
  flex: 1;
  overflow-y: auto;
  padding-left: 4px;
}

.empty-cart {
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  color: var(--text-muted);
  gap: 12px;
  text-align: center;
}

.empty-cart i {
  font-size: 2rem;
}

.cart-item {
  padding: 14px;
  border-radius: 16px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 12px;
}

.cart-item-top {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.cart-item h4 {
  font-size: 1rem;
}

.cart-item p {
  color: var(--text-soft);
  font-size: 0.92rem;
}

.remove-btn {
  background: transparent;
  color: #ff9a9a;
  border: none;
  cursor: pointer;
  font-size: 1rem;
}

.cart-total-row {
  display: flex;
  justify-content: space-between;
  margin: 16px 0;
  font-size: 1rem;
}

.cart-total-row strong {
  color: var(--accent);
}

/* =========================
   Modal
========================= */
.modal {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: none;
}

.modal.active {
  display: block;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.6);
  animation: fadeIn 0.25s ease;
}

.modal-content {
  position: relative;
  width: min(480px, calc(100% - 24px));
  margin: 8vh auto 0;
  padding: 24px;
  border-radius: 24px;
  animation: fadeInUp 0.35s ease;
}

.modal-close {
  position: absolute;
  top: 12px;
  left: 12px;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: rgba(255,255,255,0.05);
  color: var(--text-main);
  border: 1px solid var(--border);
}

.modal-header {
  margin-bottom: 18px;
}

.modal-header p {
  color: var(--text-soft);
  margin-top: 8px;
  line-height: 1.9;
}

.auth-form {
  display: grid;
  gap: 12px;
}

.auth-form label {
  color: var(--text-soft);
  font-size: 0.95rem;
}

.auth-form input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid rgba(255,255,255,0.08);
  background: rgba(255,255,255,0.04);
  color: var(--text-main);
  font-size: 0.98rem;
  outline: none;
  transition: var(--transition);
}

.auth-form input:focus {
  border-color: rgba(255,255,255,0.20);
  box-shadow: 0 0 0 4px rgba(255,255,255,0.04);
}

.auth-submit-btn {
  margin-top: 10px;
  width: 100%;
}

.payment-modal-content {
  text-align: center;
}

.payment-box {
  padding: 24px 16px 10px;
}

.payment-box i {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 14px;
}

.payment-box p {
  color: var(--text-soft);
  margin-bottom: 16px;
  line-height: 1.9;
}

.card-number {
  direction: ltr;
  display: inline-block;
  padding: 14px 18px;
  border-radius: 16px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.08);
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--accent);
}

/* =========================
   Toast
========================= */
.toast-container {
  position: fixed;
  left: 16px;
  bottom: 16px;
  z-index: 150;
  display: grid;
  gap: 10px;
}

.toast {
  min-width: 260px;
  max-width: 360px;
  padding: 14px 16px;
  border-radius: 14px;
  color: #fff;
  box-shadow: var(--shadow-soft);
  animation: fadeInUp 0.35s ease;
  border: 1px solid rgba(255,255,255,0.08);
}

.toast.success {
  background: rgba(27, 99, 68, 0.95);
}

.toast.error {
  background: rgba(125, 34, 34, 0.95);
}

.toast.info {
  background: rgba(45, 53, 72, 0.95);
}

/* =========================
   Footer
========================= */
.site-footer {
  width: min(1240px, calc(100% - 24px));
  margin: 0 auto 18px;
  padding: 20px;
  border-radius: 24px;
  text-align: center;
  color: var(--text-soft);
}

/* =========================
   Animations
========================= */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

/* =========================
   Responsive
========================= */
@media (max-width: 992px) {
  .classes-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .site-header {
    flex-direction: column;
    align-items: stretch;
  }

  .header-right,
  .header-left {
    justify-content: center;
  }

  .user-status {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-stats {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .classes-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 44px;
  }

  .hero-content {
    padding: 28px 20px;
  }

  .hero h2 {
    line-height: 1.7;
  }

  .class-card-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .owner-panel-header,
  .owner-user-top {
    flex-direction: column;
    align-items: stretch;
  }

  .cart-panel {
    width: 100%;
    border-radius: 0;
  }
}