/* ===== Spot It Generator — Dark Glassmorphism Design ===== */

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

/* ---------- Design tokens (Solarized Dark) ---------- */
:root {
  --bg-primary: #002b36;
  --bg-secondary: #073642;
  --bg-glass: rgba(7, 54, 66, 0.6);
  --bg-glass-hover: rgba(7, 54, 66, 0.85);
  --border-glass: rgba(88, 110, 117, 0.25);
  --border-glass-hover: rgba(88, 110, 117, 0.5);

  --accent-1: #2aa198;
  /* cyan */
  --accent-2: #268bd2;
  /* blue */
  --accent-3: #859900;
  /* green */
  --accent-glow: rgba(42, 161, 152, 0.45);

  --text-primary: #93a1a1;
  --text-secondary: #839496;
  --text-muted: #586e75;

  --success: #859900;
  --warning: #b58900;
  --error: #dc322f;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --shadow-glow: 0 0 35px var(--accent-glow);
  --shadow-card: 0 12px 40px rgba(0, 0, 0, 0.6);

  --transition-fast: 150ms ease;
  --transition-med: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Animated gradient background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 20%, rgba(42, 161, 152, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(38, 139, 210, 0.12), transparent),
    radial-gradient(ellipse 50% 60% at 50% 0%, rgba(133, 153, 0, 0.08), transparent);
  pointer-events: none;
  z-index: 0;
}

/* ---------- Layout ---------- */
.app {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* ---------- Sidebar ---------- */
.sidebar {
  width: 340px;
  min-width: 340px;
  height: 100vh;
  position: sticky;
  top: 0;
  overflow-y: auto;
  padding: 20px 16px;
  background: var(--bg-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-right: 1px solid var(--border-glass);
  display: flex;
  flex-direction: column;
  gap: 10px;
  scrollbar-width: thin;
  scrollbar-color: var(--text-muted) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 3px;
}

.sidebar-header {
  text-align: center;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-glass);
}

.sidebar-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sidebar-header p {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ---------- Sections ---------- */
.section {
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 16px;
  transition: border-color var(--transition-med);
}

.section:hover {
  border-color: var(--border-glass-hover);
}

.section-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--accent-3);
  margin-bottom: 12px;
}

/* ---------- Stats ---------- */
.stats-row {
  display: flex;
  gap: 8px;
}

.stat-box {
  flex: 1;
  text-align: center;
  background: rgba(99, 102, 241, 0.08);
  border-radius: var(--radius-sm);
  padding: 10px 4px;
}

.stat-box .value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-3);
  display: block;
}

.stat-box .label {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 2px;
}

/* ---------- Form controls ---------- */
.control-group {
  margin-bottom: 12px;
}

.control-group:last-child {
  margin-bottom: 0;
}

.control-group label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

select,
input[type="range"] {
  width: 100%;
}

select {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 0.82rem;
  font-family: inherit;
  cursor: pointer;
  transition: border-color var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M2 4l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
}

select:focus {
  outline: none;
  border-color: var(--accent-1);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

/* Toggle group (shape/layout) */
.toggle-group {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.toggle-group input[type="radio"] {
  display: none;
}

.toggle-group label.toggle-btn {
  flex: 1;
  min-width: 60px;
  text-align: center;
  padding: 8px 6px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}

.toggle-group input[type="radio"]:checked+label.toggle-btn {
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: white;
  border-color: var(--accent-1);
  box-shadow: var(--shadow-glow);
}

.toggle-group label.toggle-btn:hover {
  border-color: var(--accent-1);
}

/* Switch toggle */
.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.switch-row span {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.switch {
  position: relative;
  width: 44px;
  height: 24px;
}

.switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch .slider {
  position: absolute;
  inset: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.switch .slider::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.switch input:checked+.slider {
  background: var(--accent-1);
  border-color: var(--accent-1);
}

.switch input:checked+.slider::before {
  transform: translateX(20px);
  background: white;
}

/* Range slider */
input[type="range"] {
  -webkit-appearance: none;
  height: 6px;
  background: var(--bg-secondary);
  border-radius: 3px;
  outline: none;
  margin-top: 4px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 8px var(--accent-glow);
}

.range-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.hidden {
  display: none !important;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px 20px;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-med);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: white;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px var(--accent-glow);
}

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

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 1px solid var(--border-glass);
}

.btn-secondary:hover {
  border-color: var(--accent-1);
  color: var(--text-primary);
}

/* ---------- Main content ---------- */
.main {
  flex: 1;
  padding: 16px 24px;
  display: flex;
  flex-direction: column;
}

.top-panels {
  display: flex;
  gap: 20px;
  margin-bottom: 24px;
}

.main-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.main-header h2 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ---------- Card grid ---------- */
#card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  grid-auto-rows: 1fr;
  gap: 24px;
  flex: 1;
  width: 100%;
}

.card-wrapper {
  position: relative;
  background: var(--bg-glass);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-med);
  max-width: 600px;
  margin: 0 auto;
}

.card-wrapper:hover {
  border-color: var(--border-glass-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.card-wrapper svg {
  width: 100%;
  height: auto;
}

.card-label {
  position: absolute;
  bottom: 6px;
  right: 10px;
  font-size: 0.65rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* More cards indicator */
#more-cards {
  text-align: center;
  padding: 20px;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
}

/* ---------- Error ---------- */
.error-msg {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.3);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--error);
  font-size: 0.82rem;
  margin-bottom: 16px;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .app {
    flex-direction: column;
  }

  .sidebar {
    order: 2;
    width: 100%;
    min-width: unset;
    height: auto;
    position: relative;
    border-right: none;
    border-bottom: none;
    border-top: 1px solid var(--border-glass);
  }

  .main {
    order: 1;
    padding: 20px;
  }

  .top-panels {
    order: 3;
    flex-direction: column;
    margin-top: 24px;
    margin-bottom: 0;
  }

  .main-header {
    order: 1;
  }

  #card-grid {
    grid-template-columns: 1fr;
    gap: 12px;
    order: 2;
  }

  #more-cards {
    order: 4;
  }
}