/* ═══════════════════════════════════════════════
   SIN MUROS — Dark Mode Elegante
   Fuentes: Syne (títulos) + DM Sans (cuerpo)
   ═══════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

/* ── Variables ── */
:root {
  --bg:          #0d0f14;
  --bg-card:     #13161e;
  --bg-hover:    #1a1e2a;
  --border:      #1f2435;
  --border-glow: #2e3650;

  --accent:      #6c8eff;
  --accent-2:    #ff6b9d;
  --accent-3:    #43e8a4;
  --accent-warm: #ffb347;

  --text-primary:   #e8ecf4;
  --text-secondary: #8892aa;
  --text-muted:     #4a5268;

  --font-display: 'Syne', sans-serif;
  --font-body:    'DM Sans', sans-serif;

  --radius:  12px;
  --radius-lg: 20px;
  --shadow:  0 4px 24px rgba(0,0,0,0.4);
  --shadow-accent: 0 0 20px rgba(108,142,255,0.15);
}

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 20% -10%, rgba(108,142,255,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 110%, rgba(255,107,157,0.06) 0%, transparent 60%);
  min-height: 100vh;
}

/* ── Tipografía ── */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 800; }
h2 { font-size: clamp(1.3rem, 3vw, 1.8rem); }
h3 { font-size: 1.1rem; font-weight: 600; }

p { color: var(--text-secondary); }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}
a:hover { color: #8aaeff; }

/* ── Navbar ── */
nav, .navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 60px;
  background: rgba(13,15,20,0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
}

.nav-brand, .navbar-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary) !important;
  letter-spacing: -0.03em;
}

.nav-brand span, .brand-accent {
  color: var(--accent);
}

.nav-user, .navbar-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar, .nav-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8rem;
  color: #fff;
  flex-shrink: 0;
}

/* ── Container ── */
.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 2rem 1.25rem;
}

/* ── Botones ── */
button, .btn, input[type="submit"] {
  font-family: var(--font-body);
  cursor: pointer;
  border: none;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.2s ease;
}

.btn-primary, .btn-reply, .btn-nuevo, button[type="submit"] {
  background: var(--accent);
  color: #fff;
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.btn-primary:hover, .btn-reply:hover, .btn-nuevo:hover, button[type="submit"]:hover {
  background: #8aaeff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-accent);
}

.btn-logout, .btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-glow);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
}

.btn-logout:hover, .btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Cards de Debate ── */
.debate-card, .card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.6rem;
  margin-bottom: 1rem;
  transition: all 0.25s ease;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.debate-card::before, .card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  opacity: 0;
  transition: opacity 0.25s;
}

.debate-card:hover, .card:hover {
  background: var(--bg-hover);
  border-color: var(--border-glow);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.debate-card:hover::before, .card:hover::before {
  opacity: 1;
}

/* ── Meta info (autor, tiempo) ── */
.debate-meta, .reply-meta, .card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 0.75rem;
}

.debate-avatar, .reply-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-3), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.75rem;
  color: #fff;
  flex-shrink: 0;
}

.debate-author, .reply-author {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.875rem;
}

.debate-time, .reply-time {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-left: auto;
}

/* ── Títulos de debate ── */
.debate-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.debate-body, .reply-body {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ── Stats (💬 respuestas) ── */
.debate-stats, .card-stats {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}

.debate-stat {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color 0.2s;
}

.debate-stat:hover { color: var(--accent); }

/* ── Formularios ── */
input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.75rem 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108,142,255,0.12);
}

input::placeholder, textarea::placeholder {
  color: var(--text-muted);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-group { margin-bottom: 1.2rem; }

/* ── Reply form ── */
.reply-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-top: 2rem;
}

.reply-form h3 {
  margin-bottom: 1rem;
  color: var(--text-primary);
}

/* ── Sección de respuestas ── */
.replies-section { margin-top: 2rem; }

.replies-title, .replies-header {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.replies-title span, .replies-header span {
  color: var(--accent);
}

.reply-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.2rem 1.4rem;
  margin-bottom: 0.75rem;
  transition: border-color 0.2s;
}

.reply-card:hover { border-color: var(--border-glow); }

/* ── Debate principal (en tema.php) ── */
.debate-main {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}

.debate-main::after {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 120px; height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108,142,255,0.08), transparent 70%);
  pointer-events: none;
}

/* ── Mensajes de error / éxito ── */
.error-box, .alert-error {
  background: rgba(255,107,157,0.1);
  border: 1px solid rgba(255,107,157,0.3);
  border-radius: var(--radius);
  color: #ff8fb5;
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.success-box, .alert-success {
  background: rgba(67,232,164,0.1);
  border: 1px solid rgba(67,232,164,0.3);
  border-radius: var(--radius);
  color: var(--accent-3);
  padding: 0.75rem 1rem;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

/* ── Empty state ── */
.empty-replies, .empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.empty-replies::before {
  content: '💬';
  display: block;
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

/* ── Back link ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  transition: color 0.2s;
}
.back-link:hover { color: var(--accent); }

/* ── Header de sección (nuevo debate) ── */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.section-header h1 {
  font-size: 1.6rem;
}

/* ── Badge / Tag ── */
.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.badge-accent  { background: rgba(108,142,255,0.15); color: var(--accent); }
.badge-pink    { background: rgba(255,107,157,0.15); color: var(--accent-2); }
.badge-green   { background: rgba(67,232,164,0.15);  color: var(--accent-3); }
.badge-warm    { background: rgba(255,179,71,0.15);  color: var(--accent-warm); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-glow); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ── Selección de texto ── */
::selection {
  background: rgba(108,142,255,0.3);
  color: var(--text-primary);
}

/* ── Animación de entrada ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.debate-card, .reply-card, .debate-main, .reply-form {
  animation: fadeUp 0.35s ease both;
}

.debate-card:nth-child(1) { animation-delay: 0.05s; }
.debate-card:nth-child(2) { animation-delay: 0.10s; }
.debate-card:nth-child(3) { animation-delay: 0.15s; }
.debate-card:nth-child(4) { animation-delay: 0.20s; }
.debate-card:nth-child(5) { animation-delay: 0.25s; }

/* ── Responsive ── */
@media (max-width: 640px) {
  nav, .navbar { padding: 0 1rem; }
  .container   { padding: 1.25rem 1rem; }
  .debate-main { padding: 1.25rem; }
  h1 { font-size: 1.5rem; }
}