/* ================================================================
   BC CourseFinder™ - Stylesheet
   Modern chat UI — black, white & yellow colour scheme
   ================================================================ */

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

:root {
  --bc-primary: #FFD700;     /* Yellow accent */
  --bc-dark: #111111;        /* Near-black background */
  --bc-darker: #0a0a0a;      /* True black */
  --bc-card: #1a1a1a;
  --bc-surface: #222222;
  --bc-text: #f0f0f0;        /* Near-white text */
  --bc-text-muted: #888888;
  --bc-user-bubble: #FFD700;
  --bc-ai-bubble: #1a1a1a;
  --bc-input-bg: #1a1a1a;
  --bc-border: #2a2a2a;
  --bc-success: #2ecc71;
  --bc-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
  --radius: 12px;
  --transition: 0.2s ease;
}

html, body {
  height: 100%;
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 15px;
  line-height: 1.5;
  background: var(--bc-dark);
  color: var(--bc-text);
}

a {
  color: var(--bc-primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* ---------- APP CONTAINER ---------- */
.app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  max-width: 800px;
  margin: 0 auto;
  background: var(--bc-darker);
  box-shadow: 0 0 40px rgba(0, 0, 0, 0.5);
}

/* ---------- HEADER ---------- */
.chat-header {
  background: var(--bc-card);
  border-bottom: 1px solid var(--bc-border);
  padding: 14px 20px;
  flex-shrink: 0;
}

.header-content {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-icon {
  flex-shrink: 0;
}

.header-text {
  flex: 1;
}

.header-text h1 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.3px;
}

.header-subtitle {
  font-size: 0.78rem;
  color: var(--bc-text-muted);
  margin-top: 1px;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  color: var(--bc-success);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bc-success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ---------- CHAT AREA ---------- */
.chat-area {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  scroll-behavior: smooth;
}

/* Custom scrollbar */
.chat-area::-webkit-scrollbar {
  width: 6px;
}
.chat-area::-webkit-scrollbar-track {
  background: transparent;
}
.chat-area::-webkit-scrollbar-thumb {
  background: var(--bc-border);
  border-radius: 3px;
}

/* ---------- CHAT MESSAGES ---------- */
.message {
  display: flex;
  gap: 10px;
  max-width: 85%;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* AI messages - left aligned */
.message.ai {
  align-self: flex-start;
}

/* User messages - right aligned */
.message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

.message.ai .message-avatar {
  background: var(--bc-primary);
  color: #111;
}

.message.user .message-avatar {
  background: var(--bc-surface);
  color: var(--bc-text-muted);
}

.message-content {
  padding: 12px 16px;
  border-radius: var(--radius);
  font-size: 0.92rem;
  line-height: 1.6;
  word-wrap: break-word;
}

.message.ai .message-content {
  background: var(--bc-ai-bubble);
  border: 1px solid var(--bc-border);
  border-top-left-radius: 4px;
  color: var(--bc-text);
}

.message.user .message-content {
  background: var(--bc-user-bubble);
  border-top-right-radius: 4px;
  color: #111;
}

/* Markdown-like formatting in AI responses */
.message.ai .message-content strong,
.message.ai .message-content b {
  color: var(--bc-primary);
  font-weight: 600;
}

.message.user .message-content strong,
.message.user .message-content b {
  color: #111;
  font-weight: 600;
}

.message-content ul,
.message-content ol {
  margin: 8px 0;
  padding-left: 20px;
}

.message-content li {
  margin: 4px 0;
}

.message-content p {
  margin: 6px 0;
}

.message-content p:first-child {
  margin-top: 0;
}

.message-content p:last-child {
  margin-bottom: 0;
}

.message-content h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--bc-primary);
  margin: 12px 0 4px;
}

.message-content h3:first-child {
  margin-top: 0;
}

.message-content h4 {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--bc-text);
  margin: 10px 0 3px;
}

.message.user .message-content h3,
.message.user .message-content h4 {
  color: #111;
}

.message-time {
  font-size: 0.68rem;
  color: var(--bc-text-muted);
  margin-top: 4px;
  padding: 0 4px;
}

.message.user .message-time {
  text-align: right;
}

/* Sources badge */
.message-sources {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.source-badge {
  font-size: 0.68rem;
  background: rgba(255, 215, 0, 0.12);
  color: var(--bc-primary);
  padding: 2px 8px;
  border-radius: 10px;
  border: 1px solid rgba(255, 215, 0, 0.3);
}

/* ---------- TYPING INDICATOR ---------- */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 10px;
  align-self: flex-start;
  max-width: 85%;
  animation: fadeIn 0.3s ease;
}

.typing-dots {
  display: flex;
  gap: 4px;
  padding: 14px 18px;
  background: var(--bc-ai-bubble);
  border: 1px solid var(--bc-border);
  border-radius: var(--radius);
  border-top-left-radius: 4px;
}

.typing-dots span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bc-text-muted);
  animation: bounce 1.4s infinite;
}

.typing-dots span:nth-child(2) { animation-delay: 0.2s; }
.typing-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); }
  30% { transform: translateY(-6px); }
}

.typing-text {
  font-size: 0.78rem;
  color: var(--bc-text-muted);
  font-style: italic;
}

/* ---------- QUICK QUESTIONS ---------- */
.quick-questions {
  padding: 10px 20px 6px;
  background: var(--bc-darker);
  border-top: 1px solid var(--bc-border);
  flex-shrink: 0;
}

.quick-label {
  font-size: 0.72rem;
  color: var(--bc-text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.quick-buttons {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
}

.quick-buttons::-webkit-scrollbar {
  display: none;
}

.quick-btn {
  flex-shrink: 0;
  padding: 7px 14px;
  font-size: 0.8rem;
  color: var(--bc-text);
  background: var(--bc-surface);
  border: 1px solid var(--bc-border);
  border-radius: 20px;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  font-family: inherit;
}

.quick-btn:hover {
  background: var(--bc-primary);
  border-color: var(--bc-primary);
  color: #111;
  transform: translateY(-1px);
}

.quick-btn:active {
  transform: translateY(0);
}

/* ---------- INPUT AREA ---------- */
.chat-input-area {
  padding: 12px 20px 10px;
  background: var(--bc-card);
  border-top: 1px solid var(--bc-border);
  flex-shrink: 0;
}

.input-container {
  display: flex;
  gap: 10px;
  align-items: center;
}

.chat-input {
  flex: 1;
  padding: 12px 16px;
  font-size: 0.92rem;
  font-family: inherit;
  color: var(--bc-text);
  background: var(--bc-input-bg);
  border: 1px solid var(--bc-border);
  border-radius: 24px;
  outline: none;
  transition: border-color var(--transition);
}

.chat-input::placeholder {
  color: var(--bc-text-muted);
}

.chat-input:focus {
  border-color: var(--bc-primary);
}

.send-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: var(--bc-primary);
  color: #111;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
  flex-shrink: 0;
}

.send-btn:hover {
  background: #e6c200;
  transform: scale(1.05);
}

.send-btn:active {
  transform: scale(0.95);
}

.send-btn:disabled {
  background: var(--bc-surface);
  color: var(--bc-text-muted);
  cursor: not-allowed;
  transform: none;
}

.input-disclaimer {
  font-size: 0.68rem;
  color: var(--bc-text-muted);
  text-align: center;
  margin-top: 8px;
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 600px) {
  .app-container {
    max-width: 100%;
  }

  .chat-area {
    padding: 14px;
  }

  .message {
    max-width: 92%;
  }

  .quick-buttons {
    gap: 4px;
  }

  .quick-btn {
    padding: 6px 10px;
    font-size: 0.75rem;
  }

  .header-text h1 {
    font-size: 1rem;
  }
}

/* ================================================================
   CHAT PAGE — header user + logout
   ================================================================ */
.header-user {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 8px;
}

.header-user-name {
  font-size: 0.78rem;
  color: var(--bc-text-muted);
  max-width: 80px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.logout-btn {
  background: none;
  border: none;
  color: var(--bc-text-muted);
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.logout-btn:hover {
  color: #e74c3c;
  background: rgba(231, 76, 60, 0.1);
}

/* ================================================================
   CHAT PAGE — back link
   ================================================================ */
.back-link {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bc-text-muted);
  transition: color var(--transition);
  flex-shrink: 0;
  margin-right: 4px;
}
.back-link:hover {
  color: var(--bc-primary);
  text-decoration: none;
}

/* ================================================================
   LANDING PAGE
   ================================================================ */
.landing-body {
  background: var(--bc-darker);
  color: var(--bc-text);
  min-height: 100vh;
}

/* ---------- NAV ---------- */
.landing-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 32px;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--bc-border);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-brand-name {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.2px;
}

.nav-cta-btn {
  padding: 9px 20px;
  background: var(--bc-primary);
  color: #111;
  font-weight: 700;
  font-size: 0.88rem;
  border-radius: 22px;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
}
.nav-cta-btn:hover {
  background: #e6c200;
  text-decoration: none;
  transform: translateY(-1px);
}

/* ---------- HERO ---------- */
.hero-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 32px 90px;
}

.hero-badge {
  display: inline-block;
  padding: 5px 14px;
  background: rgba(255, 215, 0, 0.12);
  border: 1px solid rgba(255, 215, 0, 0.3);
  color: var(--bc-primary);
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: 20px;
  letter-spacing: 0.4px;
  margin-bottom: 20px;
}

.hero-headline {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-highlight {
  color: var(--bc-primary);
}

.hero-sub {
  font-size: 1.05rem;
  color: var(--bc-text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--bc-primary);
  color: #111;
  font-weight: 700;
  font-size: 1rem;
  border-radius: 30px;
  text-decoration: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.25);
}
.btn-hero-primary:hover {
  background: #e6c200;
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(255, 215, 0, 0.35);
}

.hero-note {
  font-size: 0.82rem;
  color: var(--bc-text-muted);
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 20px;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--bc-primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--bc-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.stat-divider {
  width: 1px;
  height: 36px;
  background: var(--bc-border);
}

/* ---------- CHAT MOCKUP ---------- */
.hero-visual {
  display: flex;
  justify-content: center;
}

.chat-mockup {
  width: 100%;
  max-width: 420px;
  background: var(--bc-card);
  border: 1px solid var(--bc-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.mockup-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 12px 16px;
  background: var(--bc-surface);
  border-bottom: 1px solid var(--bc-border);
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.mockup-dot.red    { background: #ff5f57; }
.mockup-dot.yellow { background: #febc2e; }
.mockup-dot.green  { background: #28c840; }

.mockup-title {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--bc-text-muted);
  margin-left: 6px;
}

.mockup-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 280px;
}

.mockup-msg {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.mockup-msg.user {
  flex-direction: row-reverse;
}

.mockup-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bc-primary);
  color: #111;
  font-size: 0.65rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.mockup-bubble {
  background: var(--bc-surface);
  border: 1px solid var(--bc-border);
  border-radius: 12px;
  border-top-left-radius: 3px;
  padding: 10px 13px;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--bc-text);
  max-width: 82%;
}

.mockup-bubble.user {
  background: var(--bc-primary);
  color: #111;
  border: none;
  border-radius: 12px;
  border-top-right-radius: 3px;
  font-weight: 500;
}

.mockup-bubble strong {
  color: var(--bc-primary);
}

.mockup-bubble.user strong {
  color: #111;
}

.mockup-typing {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mockup-dots {
  display: flex;
  gap: 4px;
  padding: 10px 13px;
  background: var(--bc-surface);
  border: 1px solid var(--bc-border);
  border-radius: 12px;
  border-top-left-radius: 3px;
}

.mockup-dots span {
  width: 6px;
  height: 6px;
  background: var(--bc-text-muted);
  border-radius: 50%;
  animation: bounce 1.4s infinite;
}
.mockup-dots span:nth-child(2) { animation-delay: 0.2s; }
.mockup-dots span:nth-child(3) { animation-delay: 0.4s; }

/* ---------- FEATURES ---------- */
.features-section {
  background: var(--bc-dark);
  padding: 80px 32px;
}

.features-heading {
  text-align: center;
  font-size: 1.8rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 48px;
  letter-spacing: -0.3px;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}

.feature-card {
  background: var(--bc-card);
  border: 1px solid var(--bc-border);
  border-radius: 14px;
  padding: 28px 24px;
  transition: border-color var(--transition), transform var(--transition);
}
.feature-card:hover {
  border-color: rgba(255, 215, 0, 0.35);
  transform: translateY(-3px);
}

.feature-icon-wrap {
  width: 48px;
  height: 48px;
  background: rgba(255, 215, 0, 0.08);
  border: 1px solid rgba(255, 215, 0, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--bc-text-muted);
  line-height: 1.65;
}

/* ---------- PROGRAMMES STRIP ---------- */
.programmes-section {
  padding: 70px 32px;
  max-width: 1100px;
  margin: 0 auto;
}

.programmes-heading {
  text-align: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 28px;
}

.programmes-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.programme-pill {
  padding: 8px 18px;
  background: var(--bc-card);
  border: 1px solid var(--bc-border);
  border-radius: 24px;
  font-size: 0.85rem;
  color: var(--bc-text);
  transition: border-color var(--transition), color var(--transition);
}
.programme-pill:hover {
  border-color: var(--bc-primary);
  color: var(--bc-primary);
}

/* ---------- CTA STRIP ---------- */
.cta-strip {
  background: var(--bc-dark);
  border-top: 1px solid var(--bc-border);
  border-bottom: 1px solid var(--bc-border);
  padding: 70px 32px;
}

.cta-strip-content {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.cta-strip-content h2 {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}

.cta-strip-content p {
  color: var(--bc-text-muted);
  font-size: 1rem;
  margin-bottom: 28px;
}

/* ---------- FOOTER ---------- */
.landing-footer {
  padding: 36px 32px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: #fff;
  font-size: 0.95rem;
}

.footer-note {
  font-size: 0.82rem;
  color: var(--bc-text-muted);
}

.footer-note a {
  color: var(--bc-primary);
}

.footer-disclaimer {
  font-size: 0.74rem;
  color: #555;
}

/* ---------- LANDING RESPONSIVE ---------- */
@media (max-width: 900px) {
  .hero-section {
    grid-template-columns: 1fr;
    padding: 50px 24px 60px;
    gap: 40px;
    text-align: center;
  }

  .hero-headline {
    font-size: 2.2rem;
  }

  .hero-sub {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    order: -1;
  }

  .chat-mockup {
    max-width: 360px;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .landing-nav {
    padding: 12px 20px;
  }
}

@media (max-width: 560px) {
  .hero-headline {
    font-size: 1.8rem;
  }

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

  .landing-nav {
    padding: 10px 16px;
  }

  .nav-brand-name {
    font-size: 0.88rem;
  }

  .features-section,
  .programmes-section,
  .cta-strip {
    padding-left: 16px;
    padding-right: 16px;
  }
}

/* ================================================================
   LANDING NAV — auth actions
   ================================================================ */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-signin-btn {
  padding: 8px 18px;
  color: var(--bc-text);
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: 22px;
  text-decoration: none;
  border: 1px solid var(--bc-border);
  transition: border-color var(--transition), color var(--transition);
}
.nav-signin-btn:hover {
  border-color: var(--bc-primary);
  color: var(--bc-primary);
  text-decoration: none;
}

/* ================================================================
   AUTH PAGE
   ================================================================ */
.auth-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.nav-back-link {
  font-size: 0.85rem;
  color: var(--bc-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
.nav-back-link:hover {
  color: var(--bc-primary);
  text-decoration: none;
}

.auth-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px 60px;
}

.auth-card {
  background: var(--bc-card);
  border: 1px solid var(--bc-border);
  border-radius: 18px;
  padding: 36px 40px;
  width: 100%;
  max-width: 440px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

/* Tabs */
.auth-tabs {
  display: flex;
  gap: 4px;
  background: var(--bc-surface);
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 28px;
}

.auth-tab {
  flex: 1;
  padding: 9px;
  font-size: 0.88rem;
  font-weight: 600;
  font-family: inherit;
  border: none;
  border-radius: 8px;
  background: none;
  color: var(--bc-text-muted);
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.auth-tab.active {
  background: var(--bc-primary);
  color: #111;
}
.auth-tab:not(.active):hover {
  color: var(--bc-text);
}

/* Alert */
.auth-alert {
  padding: 11px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 18px;
  font-weight: 500;
}
.auth-alert.hidden { display: none; }
.auth-alert.error {
  background: rgba(231, 76, 60, 0.12);
  border: 1px solid rgba(231, 76, 60, 0.3);
  color: #e74c3c;
}
.auth-alert.success {
  background: rgba(46, 204, 113, 0.12);
  border: 1px solid rgba(46, 204, 113, 0.3);
  color: #2ecc71;
}

/* Form */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.auth-form.hidden { display: none; }

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--bc-text);
  letter-spacing: 0.2px;
}

.form-group input {
  padding: 11px 14px;
  font-size: 0.92rem;
  font-family: inherit;
  background: var(--bc-surface);
  border: 1px solid var(--bc-border);
  border-radius: 10px;
  color: var(--bc-text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}
.form-group input::placeholder { color: var(--bc-text-muted); }
.form-group input:focus {
  border-color: var(--bc-primary);
  box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.12);
}

/* Password wrapper */
.input-password-wrap {
  position: relative;
}
.input-password-wrap input {
  padding-right: 44px;
}
.toggle-pw {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--bc-text-muted);
  padding: 2px;
  display: flex;
  align-items: center;
  transition: color var(--transition);
}
.toggle-pw:hover { color: var(--bc-text); }

/* Password strength */
.password-strength {
  margin-top: 6px;
  font-size: 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.strength-bar {
  height: 4px;
  background: var(--bc-border);
  border-radius: 4px;
  overflow: hidden;
}
.strength-fill {
  height: 100%;
  border-radius: 4px;
  transition: width 0.3s ease, background 0.3s ease;
}

/* Submit button */
.auth-submit-btn {
  padding: 13px;
  background: var(--bc-primary);
  color: #111;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: inherit;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 4px;
  transition: background var(--transition), transform var(--transition);
}
.auth-submit-btn:hover:not(:disabled) {
  background: #e6c200;
  transform: translateY(-1px);
}
.auth-submit-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

/* Spinner */
.btn-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(0,0,0,0.2);
  border-top-color: #111;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.btn-spinner.hidden { display: none; }
.btn-label.hidden { display: none; }

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

/* Switch link */
.auth-switch-text {
  text-align: center;
  font-size: 0.82rem;
  color: var(--bc-text-muted);
  margin-top: 4px;
}
.auth-switch-link {
  background: none;
  border: none;
  color: var(--bc-primary);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  font-family: inherit;
  text-decoration: underline;
}
.auth-switch-link:hover { color: #e6c200; }

/* Footer note */
.auth-footer-note {
  margin-top: 20px;
  font-size: 0.74rem;
  color: #555;
  text-align: center;
  max-width: 380px;
}
.auth-footer-note a { color: var(--bc-primary); }

@media (max-width: 480px) {
  .auth-card {
    padding: 28px 22px;
    border-radius: 14px;
  }

  .nav-actions {
    gap: 6px;
  }

  .nav-signin-btn {
    padding: 7px 12px;
    font-size: 0.82rem;
  }
}

/* ================================================================
   QR CODE BUTTON (nav)
   ================================================================ */
.nav-qr-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  background: none;
  border: 1px solid var(--bc-border);
  border-radius: 22px;
  color: var(--bc-text-muted);
  font-size: 0.85rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
}
.nav-qr-btn:hover {
  border-color: var(--bc-primary);
  color: var(--bc-primary);
}

/* ================================================================
   QR CODE MODAL
   ================================================================ */
.qr-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}
.qr-overlay.hidden {
  display: none;
}

.qr-modal {
  background: var(--bc-card);
  border: 1px solid var(--bc-border);
  border-radius: 20px;
  padding: 32px 36px;
  width: 100%;
  max-width: 380px;
  position: relative;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
  animation: slideUp 0.25s ease;
}

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

.qr-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--bc-surface);
  border: none;
  border-radius: 8px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--bc-text-muted);
  transition: color var(--transition), background var(--transition);
}
.qr-close-btn:hover {
  color: #fff;
  background: var(--bc-border);
}

.qr-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.qr-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin: 0 0 2px;
}

.qr-subtitle {
  font-size: 0.78rem;
  color: var(--bc-text-muted);
  margin: 0;
}

.qr-code-container {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.qr-code-wrap {
  background: #fff;
  border-radius: 12px;
  padding: 14px;
  display: inline-block;
  box-shadow: 0 4px 20px rgba(255, 215, 0, 0.15);
}

/* qrcodejs renders a table or canvas — make sure it's block */
.qr-code-wrap canvas,
.qr-code-wrap img {
  display: block;
  border-radius: 4px;
}

.qr-url-text {
  text-align: center;
  font-size: 0.78rem;
  color: var(--bc-text-muted);
  margin-bottom: 20px;
  word-break: break-all;
}

.qr-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.qr-action-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 11px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: 10px;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.qr-download-btn {
  background: var(--bc-primary);
  color: #111;
}
.qr-download-btn:hover {
  background: #e6c200;
}

.qr-copy-btn {
  background: var(--bc-surface);
  color: var(--bc-text);
  border: 1px solid var(--bc-border);
}
.qr-copy-btn:hover {
  border-color: var(--bc-primary);
  color: var(--bc-primary);
}

.qr-hint {
  text-align: center;
  font-size: 0.72rem;
  color: #555;
  margin: 0;
}

@media (max-width: 480px) {
  .qr-modal {
    padding: 24px 20px;
  }
  .nav-qr-btn span {
    display: none;
  }
  .nav-qr-btn {
    padding: 8px 10px;
  }
}