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

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0A0A12;
  --surface: #12121E;
  --card: #1A1A2E;
  --border: rgba(255,255,255,0.07);
  --primary: #6C63FF;
  --primary-glow: rgba(108, 99, 255, 0.25);
  --secondary: #FF6584;
  --success: #43D9AD;
  --warning: #FFD166;
  --danger: #EF5350;
  --text: #FFFFFE;
  --muted: #8B8FA8;
  --radius: 16px;
  --radius-sm: 10px;
  --sidebar-w: 240px;
  --transition: all 0.25s ease;
}

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
}

/* ─── SIDEBAR ─── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 24px 0;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
}
.sidebar-brand {
  padding: 0 24px 28px;
  border-bottom: 1px solid var(--border);
}
.brand-logo {
  font-size: 1.4rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.brand-sub {
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}
.nav-item:hover { background: rgba(255,255,255,0.05); color: var(--text); }
.nav-item.active { background: var(--primary-glow); color: var(--primary); font-weight: 600; }
.nav-item svg { flex-shrink: 0; }

.sidebar-footer {
  padding: 16px 12px 0;
  border-top: 1px solid var(--border);
}

/* ─── MAIN CONTENT ─── */
.main {
  margin-left: var(--sidebar-w);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
.topbar {
  padding: 20px 32px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 50;
}
.topbar-title { font-size: 1.1rem; font-weight: 700; }
.topbar-actions { display: flex; gap: 12px; align-items: center; }

.content { padding: 32px; flex: 1; }

/* ─── STATS CARDS ─── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.stat-card:hover { transform: translateY(-2px); border-color: var(--primary); }
.stat-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  margin-bottom: 16px;
}
.stat-value {
  font-size: 2.2rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label { font-size: 0.8rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; }

/* ─── TABLES ─── */
.table-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
}
.table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}
.table-header h3 { font-size: 1rem; font-weight: 700; }
.table-responsive { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}
th {
  padding: 12px 20px;
  text-align: left;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border);
}
td {
  padding: 14px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(255,255,255,0.02); }

/* ─── BADGES ─── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 600;
}
.badge-success { background: rgba(67, 217, 173, 0.15); color: var(--success); }
.badge-danger { background: rgba(239, 83, 80, 0.15); color: var(--danger); }
.badge-primary { background: var(--primary-glow); color: var(--primary); }
.badge-warning { background: rgba(255, 209, 102, 0.15); color: var(--warning); }

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 50px;
  border: none;
  font-family: 'Inter', sans-serif;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), #8C73FF);
  color: #fff;
  box-shadow: 0 4px 15px rgba(108, 99, 255, 0.35);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(108, 99, 255, 0.5); color: #fff; }
.btn-secondary { background: rgba(255,255,255,0.07); color: var(--text); }
.btn-secondary:hover { background: rgba(255,255,255,0.12); }
.btn-danger { background: rgba(239, 83, 80, 0.15); color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }

/* ─── FORMS ─── */
.form-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 20px;
}
.form-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--border); }
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 0.8rem; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 8px; }
.form-control {
  width: 100%;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: 'Inter', sans-serif;
  font-size: 0.9rem;
  padding: 10px 14px;
  transition: var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(108, 99, 255, 0.07);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-check-label { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; cursor: pointer; }
input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--primary); }
select.form-control { appearance: none; cursor: pointer; }

/* ─── CHARTS SECTION ─── */
.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-bottom: 24px;
}
.chart-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.chart-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.chart-wrapper { position: relative; height: 220px; }
.chart-wrapper-tall { position: relative; height: 300px; }

/* Barras resultados */
.result-bar-row {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 10px; font-size: 0.875rem;
}
.result-label { flex: 0 0 160px; display: flex; align-items: center; gap: 8px; }
.result-option-img {
  width: 28px; height: 28px;
  object-fit: cover; border-radius: 50%;
  border: 1px solid var(--border);
  flex-shrink: 0;
}
.result-track {
  flex: 1; height: 10px;
  background: rgba(255,255,255,0.06);
  border-radius: 5px; overflow: hidden;
}
.result-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: 5px;
  transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
  width: 0;
}
.result-pct { min-width: 40px; text-align: right; font-weight: 700; color: var(--primary); }
.result-count { min-width: 30px; text-align: right; color: var(--muted); font-size: 0.8rem; }

/* Question block en reporte */
.question-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
}
.question-block-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}

/* Words - texto libre */
.word-cloud {
  display: flex; flex-wrap: wrap; gap: 8px; padding: 10px 0;
}
.word-tag {
  background: var(--primary-glow);
  color: var(--primary);
  border-radius: 50px;
  padding: 5px 14px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ─── LOGIN ─── */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  padding: 20px;
}
.login-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 40px;
  width: 100%;
  max-width: 420px;
}
.login-card h1 {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}
.login-sub { color: var(--muted); margin-bottom: 36px; }
.alert-error {
  background: rgba(239, 83, 80, 0.1);
  border: 1px solid rgba(239, 83, 80, 0.3);
  border-radius: var(--radius-sm);
  color: var(--danger);
  padding: 12px 16px;
  margin-bottom: 20px;
  font-size: 0.875rem;
}

/* ─── QUESTION EDITOR ─── */
.question-item {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-bottom: 16px;
  transition: var(--transition);
}
.question-item:hover { border-color: var(--primary); }
.question-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.question-handle { color: var(--muted); cursor: grab; font-size: 1.2rem; }
.option-item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}
.option-item input { flex: 1; }
.image-preview { width: 40px; height: 40px; object-fit: cover; border-radius: 50%; border: 1px solid var(--border); }

/* ─── TOOLTIPS / EMPTY STATE ─── */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--muted);
}
.empty-state .icon { font-size: 3rem; margin-bottom: 16px; }
.empty-state p { font-size: 0.95rem; margin-bottom: 20px; }

/* ─── SCROLLBAR ─── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .main { margin-left: 0; }
  .content { padding: 20px 16px; }
  .form-row { grid-template-columns: 1fr; }
  .charts-grid { grid-template-columns: 1fr; }
}