/* ============================================================
   CitySport T&C AI Assistant
   Matches official citysport.org.uk — black bg, red accents,
   diagonal stripes, corporate clean design
   ============================================================ */

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

/* ── Tokens ───────────────────────────────────────────────── */
:root {
  --black:          #000000;
  --black-soft:     #0d0d0d;
  --surface:        #111111;
  --surface-2:      #181818;
  --surface-3:      #1f1f1f;
  --border:         #2a2a2a;
  --border-hover:   #3a3a3a;

  --red:            #c8102e;
  --red-bright:     #e31837;
  --red-dim:        rgba(200, 16, 46, 0.12);
  --red-glow:       rgba(200, 16, 46, 0.25);

  --white:          #ffffff;
  --text:           #e8e8e8;
  --text-dim:       #999999;
  --text-muted:     #606060;
  --green:          #22c55e;

  --font:           'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --nav-height:     60px;
  --hero-height:    110px;
  --input-height:   80px;
  --max-w:          760px;
  --ease:           cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Reset ────────────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { height: 100%; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font);
  background: var(--black);
  color: var(--text);
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  line-height: 1.6;
}

/* ══════════════════════════════════════════════════════════════
   TOP NAV — matches citysport.org.uk header
   ══════════════════════════════════════════════════════════════ */
.topnav {
  height: var(--nav-height);
  background: var(--black);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  z-index: 100;
}

.topnav-inner {
  max-width: 1200px;
  margin: 0 auto;
  height: 100%;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topnav-logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  text-decoration: none;
  letter-spacing: -0.5px;
  margin-right: 32px;
  transition: opacity 0.2s;
}
.topnav-logo:hover { opacity: 0.8; }

.topnav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.topnav-links a {
  color: var(--white);
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 400;
  padding: 6px 12px;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}
.topnav-links a:hover {
  background: rgba(255,255,255,0.08);
}

.topnav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: 20px;
}

.btn-outline {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--white);
  text-decoration: none;
  border: 1.5px solid rgba(255,255,255,0.5);
  padding: 6px 16px;
  border-radius: 20px;
  transition: all 0.25s var(--ease);
  white-space: nowrap;
}
.btn-outline:hover {
  border-color: var(--white);
  background: rgba(255,255,255,0.08);
}

.btn-red {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--white);
  text-decoration: none;
  background: var(--red);
  padding: 7px 18px;
  border-radius: 20px;
  transition: all 0.25s var(--ease);
  white-space: nowrap;
}
.btn-red:hover {
  background: var(--red-bright);
  box-shadow: 0 4px 16px var(--red-glow);
}

/* Mobile toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.mobile-toggle span {
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ══════════════════════════════════════════════════════════════
   HERO BANNER — Diagonal red stripes + title
   ══════════════════════════════════════════════════════════════ */
.hero-banner {
  height: var(--hero-height);
  background: var(--black-soft);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

/* Diagonal stripe decorations */
.stripe-decor {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 120px;
  display: flex;
  gap: 10px;
  align-items: center;
}

.stripe-left {
  left: 20px;
  transform: rotate(0deg);
}

.stripe-right {
  right: 20px;
}

.stripe {
  width: 8px;
  height: 65px;
  background: var(--red);
  transform: skewX(-20deg);
  border-radius: 2px;
  opacity: 0.7;
  animation: stripeGlow 3s ease-in-out infinite;
}

.stripe:nth-child(2) { animation-delay: 0.15s; }
.stripe:nth-child(3) { animation-delay: 0.3s; }
.stripe:nth-child(4) { animation-delay: 0.45s; }

@keyframes stripeGlow {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 0.9; }
}

.hero-content {
  text-align: center;
  z-index: 1;
}

.hero-title {
  font-size: 28px;
  font-weight: 800;
  font-style: italic;
  color: var(--white);
  letter-spacing: 2px;
  text-transform: uppercase;
  position: relative;
  display: inline-block;
}

/* Red underline accent like CitySport headings */
.hero-title::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: -8px;
  right: -8px;
  height: 3px;
  background: var(--red);
  border-radius: 2px;
}

.hero-tagline {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 6px;
  font-weight: 400;
  letter-spacing: 3px;
  text-transform: uppercase;
}

.hero-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 6px;
  font-weight: 400;
}

.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  font-size: 11px;
  color: var(--text-muted);
  background: var(--surface);
  padding: 3px 12px 3px 8px;
  border-radius: 20px;
  border: 1px solid var(--border);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(34,197,94,0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 4px rgba(34,197,94,0); }
}

/* ══════════════════════════════════════════════════════════════
   CHAT SECTION
   ══════════════════════════════════════════════════════════════ */
.chat-section {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: padding 0.3s var(--ease);
}

body.chat-active .chat-section {
  justify-content: flex-start;
  align-items: stretch;
}

.chat-wrapper {
  flex: 1;
  overflow-y: auto;
  scroll-behavior: smooth;
  display: none;
  flex-direction: column;
  width: 100%;
  order: 1;
}

body.chat-active .chat-wrapper {
  display: flex;
}

.chat-wrapper::-webkit-scrollbar { width: 5px; }
.chat-wrapper::-webkit-scrollbar-track { background: transparent; }
.chat-wrapper::-webkit-scrollbar-thumb { background: var(--surface-3); border-radius: 3px; }

/* ── Welcome ──────────────────────────────────────────────── */
.welcome {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px 20px;
  animation: fadeUp 0.5s var(--ease);
  order: 0;
}

.welcome-text {
  text-align: center;
  color: var(--white);
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 16px;
}

.disclaimer-alert {
  text-align: center;
  background: var(--red-dim);
  border: 1px solid rgba(200, 16, 46, 0.3);
  color: #ffb3b3; /* Soft red text */
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 14px;
  width: max-content;
  margin: 0 auto;
  white-space: nowrap;
}
.disclaimer-alert strong {
  color: var(--white);
}

.quick-actions-container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 20px 24px 36px;
  animation: fadeUp 0.6s var(--ease);
  order: 3;
}

body.chat-active .welcome,
body.chat-active .quick-actions-container {
  display: none !important;
}

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

.quick-card {
  flex: 1 1 calc(33.333% - 10px);
  min-width: 220px;
  max-width: 280px;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  color: inherit;
  transition: all 0.25s var(--ease);
  position: relative;
  overflow: hidden;
}

.quick-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--red);
  opacity: 0;
  transition: opacity 0.25s var(--ease);
}

.quick-card:hover {
  border-color: var(--red);
  background: var(--surface-2);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.4);
}
.quick-card:hover::before { opacity: 1; }
.quick-card:active { transform: translateY(0); }

.quick-card-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--red);
  transition: all 0.25s var(--ease);
}
.quick-card:hover .quick-card-icon {
  background: var(--red-dim);
  border-color: rgba(200,16,46,0.3);
}

.quick-card-body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.quick-card-body strong {
  font-size: 13px;
  font-weight: 600;
  color: var(--white);
}

.quick-card-body span {
  font-size: 11.5px;
  color: var(--text-muted);
  line-height: 1.3;
}

/* ── Messages ─────────────────────────────────────────────── */
.messages {
  display: none;
  padding: 8px 0 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.messages:not(.active) {
  display: none;
}
.messages.active {
  display: flex;
}

.message {
  padding: 18px 0;
  animation: msgIn 0.35s var(--ease);
  transition: background 0.15s;
}
.message:hover {
  background: rgba(255,255,255,0.012);
}

.msg-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 14px;
}

.msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: -0.3px;
  margin-top: 1px;
}

.message.user .msg-avatar {
  background: var(--surface-3);
  color: var(--text-dim);
  border: 1px solid var(--border);
}

.message.assistant .msg-avatar {
  background: var(--red);
  color: var(--white);
  box-shadow: 0 2px 8px var(--red-glow);
}

.msg-body { flex: 1; min-width: 0; }

.msg-role {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 5px;
}
.message.user .msg-role { color: var(--text-dim); }
.message.assistant .msg-role { color: var(--red); }

.msg-text {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
  word-wrap: break-word;
}
.msg-text p { margin-bottom: 10px; }
.msg-text p:last-child { margin-bottom: 0; }
.msg-text strong { color: var(--white); font-weight: 600; }
.msg-text ul, .msg-text ol { margin: 6px 0 10px 18px; }
.msg-text li { margin-bottom: 3px; }

/* Clause tags */
.clause-ref {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 1px 8px;
  border-radius: 4px;
  background: var(--red-dim);
  border: 1px solid rgba(200,16,46,0.2);
  color: var(--red-bright);
  font-size: 11.5px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s var(--ease);
}
.clause-ref:hover {
  background: rgba(200,16,46,0.25);
  border-color: var(--red);
  transform: translateY(-1px);
}

/* Message actions */
.msg-footer {
  margin-top: 8px;
  display: flex;
  gap: 6px;
  opacity: 0;
  transition: opacity 0.2s;
}
.message:hover .msg-footer { opacity: 1; }

.msg-action {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: 5px;
  border: none;
  background: var(--surface-3);
  color: var(--text-dim);
  font-size: 11px;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
}
.msg-action:hover { background: var(--border); color: var(--white); }
.msg-action.copied { color: var(--green); }

/* Typing dots */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 3px 0;
}
.typing-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--red);
  animation: bounce 1.4s infinite ease-in-out;
}
.typing-dot:nth-child(2) { animation-delay: 0.16s; }
.typing-dot:nth-child(3) { animation-delay: 0.32s; }

@keyframes bounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.35; }
  30% { transform: translateY(-7px); opacity: 1; }
}

/* Streaming cursor */
.streaming-cursor {
  display: inline-block;
  width: 2px;
  height: 14px;
  background: var(--red);
  margin-left: 1px;
  animation: blink 0.7s infinite;
  vertical-align: text-bottom;
}
@keyframes blink { 0%, 50% { opacity: 1; } 51%, 100% { opacity: 0; } }

/* ══════════════════════════════════════════════════════════════
   INPUT BAR
   ══════════════════════════════════════════════════════════════ */
.input-bar {
  flex-shrink: 0;
  width: 100%;
  padding: 12px 24px 18px;
  background: transparent;
  order: 2;
}

body.chat-active .input-bar {
  background: linear-gradient(to top, var(--black) 70%, transparent);
}

.input-bar-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
}

.input-box {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  padding: 10px 14px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  transition: all 0.25s var(--ease);
  box-shadow: 0 2px 16px rgba(0,0,0,0.3);
}
.input-box:focus-within {
  border-color: var(--red);
  box-shadow: 0 2px 16px rgba(0,0,0,0.3), 0 0 0 2px var(--red-dim);
}

#chat-input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  resize: none;
  outline: none;
  min-height: 22px;
  max-height: 120px;
  padding: 4px 0;
}
#chat-input::placeholder { color: var(--text-muted); }

.send-btn {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: none;
  background: var(--red);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.25s var(--ease);
  box-shadow: 0 2px 8px var(--red-glow);
}
.send-btn svg { width: 16px; height: 16px; }
.send-btn:hover:not(:disabled) {
  background: var(--red-bright);
  transform: scale(1.06);
  box-shadow: 0 4px 16px var(--red-glow);
}
.send-btn:active:not(:disabled) { transform: scale(0.95); }
.send-btn:disabled { opacity: 0.3; cursor: not-allowed; box-shadow: none; }

.input-footnote {
  text-align: center;
  margin-top: 8px;
  font-size: 10.5px;
  color: var(--text-muted);
}
.input-footnote a {
  color: var(--text-dim);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.input-footnote a:hover { color: var(--white); }

/* ── Toast ────────────────────────────────────────────────── */
.toast {
  position: fixed;
  bottom: 100px;
  left: 50%;
  transform: translateX(-50%) translateY(16px);
  background: rgba(200,16,46,0.12);
  border: 1px solid rgba(200,16,46,0.3);
  color: var(--red-bright);
  padding: 8px 18px;
  border-radius: 10px;
  font-size: 12.5px;
  font-weight: 500;
  backdrop-filter: blur(12px);
  opacity: 0;
  pointer-events: none;
  transition: all 0.35s var(--ease);
  z-index: 200;
}
.toast.visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

/* ── Animations ───────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ══════════════════════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════════════════════ */
@media (max-width: 900px) {
  .topnav-links { display: none; }
  .mobile-toggle { display: flex; }
  .topnav-actions { margin-left: auto; margin-right: 12px; }
}

@media (max-width: 640px) {
  .topnav-actions { display: none; }

  .hero-banner { height: 90px; }
  .hero-title { font-size: 20px; letter-spacing: 1px; }
  .hero-sub { font-size: 12px; }

  .stripe-decor { width: 60px; }
  .stripe-left { left: 8px; }
  .stripe-right { right: 8px; }
  .stripe { width: 6px; height: 45px; }

  .disclaimer-alert {
    white-space: normal;
    width: 100%;
    font-size: 13px;
  }

  .quick-grid {
    flex-wrap: nowrap;
    overflow-x: auto;
    justify-content: flex-start;
    padding-bottom: 12px;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x mandatory;
    margin: 0 -24px; /* break out of container padding */
    padding: 0 24px 12px; /* restore inner padding */
  }
  
  .quick-grid::-webkit-scrollbar {
    height: 0px; /* hide scrollbar for clean swipe */
    display: none;
  }

  .quick-card { 
    flex: 0 0 calc(100% - 40px); /* Fill most of the screen width */
    max-width: none; 
    scroll-snap-align: center;
  }

  .msg-inner { padding: 0 16px; }
  .input-bar { padding: 10px 16px 14px; }

  #chat-input { font-size: 16px; /* prevent iOS zoom */ }
}

@media (max-width: 400px) {
  .hero-status { display: none; }
  .quick-card { padding: 12px; }
  .quick-card-icon { width: 36px; height: 36px; }
}