/* Relayn brand CSS — dark theme mirroring www.relayn.sh */
:root {
  /* ── Core palette (from relayn.sh live CSS) ─────────────────────────────── */
  --rl-bg:            hsl(220 20% 4%);
  --rl-fg:            hsl(210 20% 95%);
  --rl-card:          hsl(220 20% 7%);
  --rl-card-fg:       hsl(210 20% 95%);
  --rl-primary:       hsl(180 80% 50%);    /* cyan */
  --rl-primary-dk:    hsl(180 80% 40%);
  --rl-accent:        hsl(160 70% 45%);    /* teal */
  --rl-secondary:     hsl(220 15% 12%);
  --rl-muted:         hsl(220 15% 15%);
  --rl-muted-fg:      hsl(215 15% 55%);
  --rl-border:        hsl(220 15% 15%);
  --rl-input:         hsl(220 15% 12%);
  --rl-radius:        0.75rem;

  /* ── Gradients & effects ────────────────────────────────────────────────── */
  --rl-gradient-card:   linear-gradient(145deg, hsl(220 20% 8%) 0%, hsl(220 20% 5%) 100%);
  --rl-gradient-border: linear-gradient(135deg, hsl(180 80% 50% / .3), hsl(160 70% 45% / .1));
  --rl-gradient-glow:   linear-gradient(135deg, hsl(180 80% 50% / .2), hsl(160 70% 45% / .1));
  --rl-text-gradient:   linear-gradient(135deg, #47ebeb, #3cdda7);
  --rl-radial-glow:     radial-gradient(ellipse 80% 50% at 50% -20%, hsl(180 80% 50% / .15), transparent);
  --rl-shadow-glow:     0 0 60px -15px hsl(180 80% 50% / .4);
  --rl-shadow-glow-sm:  0 0 30px -10px hsl(180 80% 50% / .3);
  --rl-shadow-card:     0 4px 24px -4px hsl(0 0% 0% / .4);

  /* ── Chat bubble colours ────────────────────────────────────────────────── */
  --bubble-user-bg:  hsl(180 80% 50%);
  --bubble-user-fg:  hsl(220 20% 4%);
  --bubble-bot-bg:   hsl(220 20% 9%);
  --bubble-bot-fg:   hsl(210 20% 90%);

  /* ── Navbar ─────────────────────────────────────────────────────────────── */
  --navbar-bg: hsl(220 20% 6%);
}

/* ── Base ──────────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', ui-sans-serif, system-ui, sans-serif;
  background: var(--rl-bg);
  color: var(--rl-fg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle grid + radial hero glow on the body */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(hsl(220 15% 15% / .3) 1px, transparent 1px),
    linear-gradient(90deg, hsl(220 15% 15% / .3) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse 80% 50% at 50% -20%, hsl(180 80% 50% / .12), transparent);
  pointer-events: none;
  z-index: 0;
}

main { flex: 1; position: relative; z-index: 1; }

/* ── Navbar ────────────────────────────────────────────────────────────────── */
.rl-navbar {
  background: var(--navbar-bg);
  border-bottom: 1px solid var(--rl-border);
  box-shadow: 0 1px 12px hsl(180 80% 50% / .06);
  position: relative;
  z-index: 10;
}

.rl-navbar .navbar-brand {
  color: #fff;
  font-weight: 600;
}

/* Brand text gradient — usable anywhere */
.rl-brand-text {
  background: var(--rl-text-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.rl-navbar .nav-link { color: hsl(210 20% 70%); transition: color .15s; }
.rl-navbar .nav-link:hover,
.rl-navbar .nav-link.active { color: var(--rl-primary); }

.rl-navbar .btn-outline-light {
  border-color: hsl(220 15% 25%);
  color: hsl(210 20% 70%);
}
.rl-navbar .btn-outline-light:hover {
  background: hsl(220 15% 18%);
  border-color: var(--rl-primary);
  color: var(--rl-primary);
}

/* ── Cards ─────────────────────────────────────────────────────────────────── */
.rl-card {
  background: var(--rl-gradient-card);
  border: 1px solid var(--rl-border);
  border-radius: var(--rl-radius);
  box-shadow: var(--rl-shadow-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  position: relative;
}

/* Glow border pseudo-element */
.rl-card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1px;
  background: var(--rl-gradient-border);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.rl-card .card-header {
  background: hsl(220 20% 8% / .6);
  border-bottom: 1px solid var(--rl-border);
  border-radius: calc(var(--rl-radius) - 1px) calc(var(--rl-radius) - 1px) 0 0;
  padding: 0.75rem 1rem;
  color: var(--rl-fg);
}

/* ── Primary button ────────────────────────────────────────────────────────── */
.btn.rl-btn-primary {
  background: var(--rl-primary);
  border-color: var(--rl-primary);
  color: hsl(220 20% 4%);
  font-weight: 600;
  transition: background .15s, box-shadow .15s;
}
.btn.rl-btn-primary:hover,
.btn.rl-btn-primary:focus {
  background: var(--rl-primary-dk);
  border-color: var(--rl-primary-dk);
  color: hsl(220 20% 4%);
  box-shadow: var(--rl-shadow-glow-sm);
}
.btn.rl-btn-primary:disabled {
  background: var(--rl-primary);
  border-color: var(--rl-primary);
  color: hsl(220 20% 4%);
  opacity: 0.45;
}

/* ── Text gradient utility ─────────────────────────────────────────────────── */
.rl-text-gradient {
  background: var(--rl-text-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Chat layout ───────────────────────────────────────────────────────────── */
.rl-chat-layout {
  height: calc(100vh - 56px);
  padding: 0;
  background: transparent;
}

.rl-chat-root {
  height: 100%;
  max-width: 900px;
  margin: 0 auto;
  width: 100%;
}

/* ── Chat header ───────────────────────────────────────────────────────────── */
.rl-chat-header {
  background: hsl(220 20% 6% / .9);
  border-bottom: 1px solid var(--rl-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.rl-chat-header .rl-chat-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--rl-text-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.rl-chat-header .btn-outline-secondary {
  border-color: hsl(220 15% 25%);
  color: hsl(210 20% 65%);
  font-size: 0.8rem;
}
.rl-chat-header .btn-outline-secondary:hover {
  background: hsl(220 15% 16%);
  border-color: var(--rl-primary);
  color: var(--rl-primary);
}

/* ── Message area ──────────────────────────────────────────────────────────── */
.rl-messages {
  background: transparent;
  scrollbar-width: thin;
  scrollbar-color: hsl(220 15% 20%) transparent;
}

.rl-messages::-webkit-scrollbar { width: 5px; }
.rl-messages::-webkit-scrollbar-thumb {
  background: hsl(220 15% 22%);
  border-radius: 3px;
}

/* ── Chat bubbles ──────────────────────────────────────────────────────────── */
.rl-bubble-row {
  display: flex;
  width: 100%;
  margin-bottom: 0.75rem;
}

.rl-user-row {
  justify-content: flex-end;
  background: hsl(180 80% 50% / .04);
  border-radius: 8px;
  padding: 0.25rem 0.5rem;
}

.rl-bot-row {
  justify-content: flex-start;
  padding: 0.25rem 0.5rem;
}

.rl-bubble-stack {
  display: flex;
  flex-direction: column;
  max-width: 72%;
}

.rl-user-row .rl-bubble-stack { align-items: flex-end; }
.rl-bot-row  .rl-bubble-stack { align-items: flex-start; }

.rl-bubble {
  padding: 0.6rem 0.9rem;
  border-radius: 16px;
  font-size: 0.93rem;
  line-height: 1.5;
  word-break: break-word;
}

.rl-bubble-user {
  background: var(--bubble-user-bg);
  color: var(--bubble-user-fg);
  border-bottom-right-radius: 4px;
  font-weight: 500;
}

.rl-bubble-bot {
  background: var(--bubble-bot-bg);
  color: var(--bubble-bot-fg);
  border: 1px solid var(--rl-border);
  border-bottom-left-radius: 4px;
}

/* ── Captions ──────────────────────────────────────────────────────────────── */
.rl-caption {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--rl-muted-fg);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.rl-user-row .rl-caption { text-align: right; }
.rl-bot-row  .rl-caption { text-align: left; }

/* ── Typing indicator ──────────────────────────────────────────────────────── */
.rl-typing {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 0.55rem 0.9rem;
}

.rl-typing span {
  width: 7px;
  height: 7px;
  background: var(--rl-primary);
  border-radius: 50%;
  animation: rl-bounce 1.2s infinite ease-in-out;
  opacity: 0.7;
}
.rl-typing span:nth-child(2) { animation-delay: 0.2s; }
.rl-typing span:nth-child(3) { animation-delay: 0.4s; }

@keyframes rl-bounce {
  0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
  40%            { transform: scale(1.0); opacity: 1; }
}

/* ── Chat input bar ────────────────────────────────────────────────────────── */
.rl-input-bar {
  background: hsl(220 20% 6% / .95);
  border-top: 1px solid var(--rl-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.rl-input-area {
  resize: none;
  max-height: 120px;
  overflow-y: auto;
  border-radius: 8px;
  font-size: 0.93rem;
  transition: border-color .15s, box-shadow .15s;
  background: var(--rl-input);
  border: 1px solid var(--rl-border);
  color: var(--rl-fg);
}
.rl-input-area::placeholder { color: var(--rl-muted-fg); }
.rl-input-area:focus {
  outline: none;
  border-color: var(--rl-primary);
  box-shadow: 0 0 0 3px hsl(180 80% 50% / .18);
  background: hsl(220 20% 10%);
}

/* ── Form controls (login / profile) ──────────────────────────────────────── */
.form-control,
.form-select {
  background-color: var(--rl-input);
  border-color: var(--rl-border);
  color: var(--rl-fg);
}
.form-control::placeholder { color: var(--rl-muted-fg); }
.form-control:focus,
.form-select:focus {
  background-color: hsl(220 20% 10%);
  border-color: var(--rl-primary);
  box-shadow: 0 0 0 3px hsl(180 80% 50% / .18);
  color: var(--rl-fg);
}

/* Bootstrap label & text */
.form-label { color: hsl(210 20% 80%); font-weight: 500; }
.text-muted  { color: var(--rl-muted-fg) !important; }

/* ── Alerts ─────────────────────────────────────────────────────────────────── */
.alert-danger {
  background: hsl(0 70% 12%);
  border-color: hsl(0 70% 28%);
  color: hsl(0 70% 85%);
}

.alert-success {
  background: hsl(160 70% 10%);
  border-color: hsl(160 70% 25%);
  color: hsl(160 70% 75%);
}

/* ── Form checks ───────────────────────────────────────────────────────────── */
.form-check-input {
  background-color: var(--rl-input);
  border-color: var(--rl-border);
}
.form-check-input:checked {
  background-color: var(--rl-primary);
  border-color: var(--rl-primary);
}
.form-check-label { color: hsl(210 20% 75%); }
.form-text { color: var(--rl-muted-fg) !important; }

/* ── Headings ──────────────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 { color: var(--rl-fg); }

/* Login page hero */
.rl-login-title {
  background: var(--rl-text-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Utilities ─────────────────────────────────────────────────────────────── */
[x-cloak] { display: none !important; }