@import url('/brand.css');
@import url('/nav.css');

:root {
  --panel: rgba(42, 27, 77, 0.95);
  --panel-strong: rgba(26, 16, 51, 0.96);
  --accent: var(--blue);
  --accent-2: var(--pink);
  --accent-3: var(--coral);
  --accent-soft: var(--lime);
  --text: var(--ink);
  --muted: var(--ink-soft);
  --shadow: 0 32px 80px rgba(0, 0, 0, 0.45);
  --success: #00d084;
  --warning: #ffa500;
  --danger: #ff5566;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--text);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  font-family: inherit;
}

.page-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 28px;
}

.page-card {
  width: min(1180px, 100%);
  border: 1px solid var(--border);
  border-radius: 32px;
  background: rgba(9, 18, 34, 0.94);
  box-shadow: var(--shadow);
  backdrop-filter: blur(24px);
  overflow: hidden;
  display: grid;
  gap: 32px;
  padding: 40px;
}

.page-card > section {
  display: grid;
  gap: 20px;
}

.page-card > section:first-child {
  margin-top: 0;
}

.page-card > section:last-child {
  margin-bottom: 0;
}

.dashboard-welcome {
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.welcome-header {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: flex-start;
}

.dashboard-stats,
.dashboard-continue,
.dashboard-subjects,
.dashboard-actions,
.dashboard-streak-section {
  display: grid;
  gap: 18px;
}

.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: min(1180px, 100%);
  margin-bottom: 20px;
  padding: 18px 24px;
  border-radius: 28px;
  background: rgba(9, 18, 34, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.nav-brand a {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--text);
}

.site-nav nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-link {
  padding: 10px 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
  transition: background 180ms ease, color 180ms ease, transform 180ms ease;
}

.nav-link:hover,
.nav-link.active {
  background: rgba(108, 231, 255, 0.12);
  color: var(--text);
  transform: translateY(-1px);
}

.site-nav .nav-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.site-nav .chat-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--lime);
  color: var(--bg-deep);
  font-weight: 700;
  font-size: 0.92rem;
  text-decoration: none;
  transition: transform 150ms ease, background 150ms ease;
}

.site-nav .chat-btn:hover {
  transform: translateY(-1px);
  background: #d4ff7a;
}

.site-nav .avatar {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--lime);
}

.hero-card,
.dashboard-card,
.onboarding-card,
.profile-card,
.chat-card,
.quiz-card,
.progress-card {
  width: 100%;
}

.hero-card {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 28px;
  padding: 32px;
}

.landing-card,
.dashboard-card,
.onboarding-card,
.profile-card,
.chat-card,
.quiz-card,
.progress-card,
.signup-card {
  padding: 40px;
}

.eyebrow {
  display: inline-flex;
  margin: 0 0 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-soft);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.1;
}

h1 {
  font-size: clamp(2rem, 3vw, 3.4rem);
}

h2 {
  font-size: clamp(1.4rem, 2vw, 2.2rem);
}

h3 {
  font-size: 1.05rem;
}

p,
span,
small {
  color: var(--muted);
}

.hero-text {
  margin: 0;
  max-width: 580px;
  font-size: 1rem;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 24px;
}

.landing-card {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(320px, 0.9fr);
  gap: 28px;
  align-items: start;
}

.landing-features {
  display: grid;
  gap: 18px;
}

.landing-features .feature-card {
  min-height: 170px;
}

.signup-card {
  padding: 34px;
}

.signup-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.signup-info {
  display: grid;
  gap: 18px;
}

.signup-form {
  display: grid;
  gap: 18px;
}

.signup-form label {
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 8px;
  display: block;
}

.signup-form input,
.signup-form select {
  width: 100%;
}

.signup-success {
  opacity: 0;
  transition: opacity 180ms ease;
}

.signup-success.visible {
  opacity: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--accent-soft);
  background: rgba(108, 231, 255, 0.12);
  border: 1px solid rgba(108, 231, 255, 0.16);
}

.subject-card-main {
  display: grid;
  gap: 16px;
}

.subject-card-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.subject-progress-card {
  display: grid;
  gap: 18px;
  border-radius: 24px;
  padding: 22px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.subject-progress-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.profile-header {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: center;
  margin-bottom: 26px;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
  color: var(--muted);
}

.avatar-colors {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 10px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: 999px;
  padding: 14px 22px;
  font-weight: 700;
  cursor: pointer;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

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

.button-primary {
  color: #03131d;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 18px 35px rgba(108, 231, 255, 0.18);
}

.button-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.button-danger {
  color: #fff;
  background: linear-gradient(135deg, #ff6b7b, #ff3e5b);
}

.feature-card,
.card,
.stat-card,
.continue-card,
.subject-card,
.challenge-box,
.quick-links-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  padding: 22px;
}

.feature-card {
  display: grid;
  gap: 14px;
}

.feature-card h3,
.card h3 {
  color: var(--text);
}

.feature-card p,
.card p,
.stat-card span,
.challenge-box,
.section-heading p {
  margin: 0;
}

.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 18px;
}

.section-heading h2 {
  margin: 0;
}

.stat-card {
  border-radius: 24px;
  padding: 22px;
  display: grid;
  gap: 10px;
}

.stat-card strong,
.level-pill,
.challenge-box,
.quick-links a,
.subject-card h3 {
  color: var(--text);
}

.stat-card strong {
  font-size: 2rem;
}

.stat-card small {
  font-size: 0.8rem;
  color: var(--muted);
  opacity: 0.8;
}

.stat-card {
  display: grid;
  gap: 12px;
  padding: 24px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all 200ms ease;
}

.stat-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(108, 231, 255, 0.2);
  transform: translateY(-2px);
}
.stats-row,
.card-grid,
.subject-progress-grid,
.streak-row,
.quick-links {
  display: grid;
  gap: 18px;
}

.hero-row {
  grid-template-columns: 1.4fr auto;
  align-items: start;
  gap: 24px;
}

.stats-row {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card-grid {
  grid-template-columns: 1.45fr 1fr;
}

.quick-links {
  display: grid;
  gap: 14px;
}

.quick-links a {
  display: inline-flex;
  width: 100%;
  justify-content: center;
}

.continue-card {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 28px;
  background: linear-gradient(135deg, rgba(108, 231, 255, 0.08), rgba(139, 108, 255, 0.06));
  border: 1px solid rgba(108, 231, 255, 0.2);
  border-radius: 24px;
  transition: all 200ms ease;
}

.continue-card:hover {
  background: linear-gradient(135deg, rgba(108, 231, 255, 0.12), rgba(139, 108, 255, 0.1));
  border-color: rgba(108, 231, 255, 0.35);
}

.level-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  border-radius: 999px;
  background: rgba(108, 231, 255, 0.08);
  color: var(--text);
  font-weight: 700;
}

.challenge-box {
  min-height: 104px;
  display: grid;
  place-content: center;
  font-size: 0.95rem;
}

.streak-row {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
}

.streak-row span {
  min-height: 86px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: grid;
  place-items: center;
  color: var(--muted);
}

.subject-progress-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.subject-card {
  display: grid;
  gap: 16px;
}

.subject-icon {
  width: 48px;
  height: 48px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: rgba(108, 231, 255, 0.14);
  font-size: 1.35rem;
}

.subject-card h3 {
  margin: 0;
}

.subject-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

input,
select,
textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  color: var(--text);
  padding: 14px 16px;
  outline: none;
}

input:focus,
select:focus,
textarea:focus {
  border-color: rgba(108, 231, 255, 0.35);
  box-shadow: 0 0 0 3px rgba(108, 231, 255, 0.1);
}

input::placeholder,
textarea::placeholder {
  color: #7d8eb3;
}

label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.form-group {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
}

.error-message {
  font-size: 0.85rem;
  color: #ff6b7b;
  display: none;
}

.error-message.show {
  display: block;
}

.hint-text {
  font-size: 0.85rem;
  color: var(--muted);
  display: block;
  margin-top: 4px;
}

.checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 22px;
}

.checkbox-group input[type="checkbox"] {
  width: auto;
  margin-top: 4px;
}

.checkbox-group label {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.checkbox-group .link {
  color: var(--accent);
  text-decoration: none;
}

.checkbox-group .link:hover {
  text-decoration: underline;
}

.button-block {
  width: 100%;
  margin-bottom: 16px;
}

.auth-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

.auth-form-section {
  display: grid;
  gap: 24px;
}

.auth-header {
  margin-bottom: 12px;
}

.auth-subtitle {
  font-size: 1rem;
  line-height: 1.7;
  margin-top: 12px;
}

.auth-form {
  display: grid;
  gap: 18px;
}

.auth-divider {
  position: relative;
  text-align: center;
  margin: 20px 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.auth-divider::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
}

.auth-divider span {
  position: relative;
  background: rgba(9, 18, 34, 0.94);
  padding: 0 12px;
}

.auth-footer {
  text-align: center;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.auth-footer p {
  margin: 0;
  font-size: 0.95rem;
}

.link {
  color: var(--accent);
  text-decoration: none;
  transition: color 180ms ease;
}

.link:hover {
  color: var(--accent-soft);
  text-decoration: underline;
}

.auth-benefits-section {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 24px;
  padding: 28px;
  height: fit-content;
}

.auth-benefits-section h3 {
  margin-top: 0;
  margin-bottom: 20px;
}

.benefits-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.benefits-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--muted);
}

.benefit-icon {
  font-size: 1.35rem;
  display: inline-block;
  width: 32px;
}

.form-row,
.page-actions {
  display: grid;
  gap: 16px;
}

.toggle-switch {
  position: relative;
  display: inline-grid;
  width: 52px;
  height: 28px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-switch .slider {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  background: var(--accent);
  border-radius: 50%;
  transition: transform 180ms ease;
}

.toggle-switch input:checked + .slider {
  transform: translateX(24px);
}

.avatar-large {
  width: 100px;
  height: 100px;
  border-radius: 28px;
  display: grid;
  place-items: center;
  font-size: 2rem;
  background: linear-gradient(135deg, rgba(108, 231, 255, 0.18), rgba(139, 108, 255, 0.18));
  color: var(--text);
}

.avatar-color {
  width: 40px;
  height: 40px;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  cursor: pointer;
}

.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 100;
  min-width: 240px;
  padding: 16px 20px;
  border-radius: 20px;
  background: rgba(12, 27, 48, 0.96);
  border: 1px solid rgba(108, 231, 255, 0.14);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
  color: var(--text);
}

.progress-bar {
  width: 100%;
  height: 12px;
  appearance: none;
  border: none;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.progress-bar::-webkit-progress-value {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-radius: 999px;
}

.fade-in {
  opacity: 0;
  animation: fadeIn 0.7s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.signup-card {
  max-width: 580px;
}

.signup-container {
  display: grid;
  gap: 32px;
}

.signup-hero {
  text-align: center;
  padding: 12px 0;
}

.signup-hero h1 {
  font-size: clamp(1.8rem, 2.5vw, 2.8rem);
  margin: 12px 0 16px;
}

.signup-hero .hero-text {
  max-width: 100%;
  margin: 0;
  font-size: 0.95rem;
}

.signup-form {
  display: grid;
  gap: 20px;
}

.signup-form label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 10px;
}

.form-row {
  display: grid;
  gap: 10px;
}

.form-row.theme-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 16px;
}

.form-row.theme-row label {
  margin-bottom: 0;
}

.full-width {
  width: 100%;
}

.signup-terms {
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0;
  line-height: 1.6;
}

.signup-divider {
  text-align: center;
  color: var(--muted);
  font-size: 0.9rem;
  margin: 12px 0;
}

.signup-signin {
  text-align: center;
  font-size: 0.9rem;
  margin: 0;
}

.signup-signin a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  transition: color 180ms ease;
}

.signup-signin a:hover {
  color: var(--accent-soft);
}

.success-toast {
  animation: slideIn 0.4s ease forwards;
}

@keyframes slideIn {
  from {
    transform: translateX(400px);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

@media (max-width: 980px) {
  .hero-card,
  .hero-row,
  .card-grid,
  .stats-row,
  .subject-progress-grid,
  .streak-row,
  .auth-grid {
    grid-template-columns: 1fr;
  }

  .page-shell {
    padding: 18px;
  }

  .site-nav {
    flex-wrap: wrap;
    gap: 12px;
  }

  .auth-benefits-section {
    order: -1;
    margin-bottom: 24px;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding: 14px;
  }

  .hero-card,
  .landing-card,
  .dashboard-card,
  .chat-card,
  .profile-card,
  .onboarding-card,
  .progress-card,
  .quiz-card,
  .signup-card {
    padding: 20px;
  }

  .button {
    width: 100%;
  }

  .nav-link {
    padding: 10px 12px;
  }

  .form-row.theme-row {
    grid-template-columns: 1fr;
  }
}