/*
  Global visual identity tokens & base UI
  - Dark space theme with orchid (#7c5cff) and cyan (#4cd7f6)
  - Tokenized colors and radii; subtle gradients and soft shadows
*/

:root {
  /* Surfaces & backgrounds */
  --bg-1: #0b0f1f;
  --bg-2: #090a14;
  --surface-1: #13182a;
  --surface-2: #0f1426;
  --border: rgba(255, 255, 255, 0.08);

  /* Text */
  --text-1: #e8eaff;
  --text-2: #a7acce;
  --muted: #7d84a8;

  /* Accents */
  --primary: #7c5cff;     /* orchid */
  --primary-2: #4cd7f6;   /* luminous cyan */
  --accent: #7c5cff;
  --accent-2: #00e5ff;
  --ring: rgba(124, 92, 255, 0.45);

  /* Effects */
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.55);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;

  /* Background gradient (fallback; themes override) */
  --bg-gradient: radial-gradient(80% 60% at 20% -10%, rgba(124,92,255,0.15), transparent 45%),
                  radial-gradient(60% 50% at 80% 0%, rgba(76,215,246,0.12), transparent 50%),
                  linear-gradient(180deg, var(--bg-1) 0%, var(--bg-2) 100%);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--text-1);
  background: var(--bg-gradient) no-repeat;
  background-size: cover;
  min-height: 100vh;
  line-height: 1.4;
}

/* Theme switcher */
.theme-switch-wrapper {
  position: fixed;
  top: 20px;
  right: 20px;
  display: flex;
  align-items: center;
  z-index: 1000;
}

.theme-switch { position: relative; width: 60px; height: 34px; display: inline-block; }
.theme-switch input { display: none; }
.theme-switch .slider {
  position: absolute; inset: 0; cursor: pointer;
  border-radius: 9999px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02)), var(--surface-2);
  border: 1px solid var(--border);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.03);
  transition: background 200ms ease, border-color 200ms ease;
}
.theme-switch .slider:before {
  content: "☾";
  position: absolute; top: 50%; left: 6px; transform: translateY(-50%);
  width: 24px; height: 24px; border-radius: 9999px;
  display: grid; place-items: center; font-size: 12px; color: #fff;
  background: linear-gradient(145deg, var(--primary) 0%, var(--primary-2) 100%);
  box-shadow: 0 6px 20px rgba(124,92,255,0.35), 0 2px 6px rgba(76,215,246,0.25);
  transition: left 200ms ease, background 200ms ease, box-shadow 200ms ease, content 200ms ease;
}
.theme-switch input:checked + .slider { background: linear-gradient(180deg, rgba(124,92,255,0.12), rgba(76,215,246,0.10)); }
.theme-switch input:checked + .slider:before { content: "☀"; left: calc(100% - 30px); }

/* Header */
header {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0)), var(--surface-1);
  border-bottom: 1px solid var(--border);
  padding: 20px;
  text-align: center;
}
header h1 { margin: 0; color: var(--text-1); }
header .actions { margin-top: 10px; display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
header .actions button { 
  padding: 10px 14px; border-radius: var(--radius-sm);
  background: linear-gradient(180deg, rgba(124,92,255,0.12), rgba(76,215,246,0.10));
  color: var(--text-1); border: 1px solid var(--border); cursor: pointer;
  transition: transform 150ms ease, box-shadow 200ms ease, border-color 200ms ease;
}
header .actions button:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(124,92,255,0.25); border-color: rgba(124,92,255,0.45); }

/* Toolbar */
.toolbar {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center;
  padding: 10px 20px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0)), var(--surface-1);
  border-bottom: 1px solid var(--border);
}

.sort-controls, .filter-controls { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; }
.filter-group #filterMasteryMin, .filter-group #filterMasteryMax { width: 90px; }

.sort-controls label, .filter-controls label { color: var(--text-2); margin-right: 4px; }
.sort-controls select, .filter-controls input {
  margin-right: 4px; padding: 8px 10px; border-radius: var(--radius-sm);
  background: var(--surface-2); color: var(--text-1);
  border: 1px solid var(--border);
  transition: border-color 200ms ease, box-shadow 200ms ease, background 200ms ease;
}
.sort-controls select:focus, .filter-controls input:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--ring);
}
.sort-order-toggle, .filter-controls button {
  padding: 8px 12px; cursor: pointer; border-radius: var(--radius-sm);
  background: var(--surface-2); color: var(--text-1); border: 1px solid var(--border);
  transition: transform 150ms ease, box-shadow 200ms ease, border-color 200ms ease, background 200ms ease;
}
.sort-order-toggle:hover, .filter-controls button:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(76,215,246,0.22); border-color: rgba(76,215,246,0.45); }

/* Cards */
.champions-container { display: flex; flex-wrap: wrap; padding: 20px; justify-content: center; }
.champion-card {
  position: relative; width: 200px; margin: 10px; cursor: pointer;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0)), var(--surface-1);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: transform 160ms ease, box-shadow 200ms ease, border-color 200ms ease;
}
.empty-state {
  width: 100%;
  max-width: 720px;
  margin: 40px auto;
  padding: 32px;
  text-align: center;
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0)), var(--surface-1);
  border: 1px solid var(--border);
  color: var(--text-1);
  box-shadow: var(--shadow);
}
.empty-state .empty-icon { font-size: 28px; margin-bottom: 8px; }
.empty-state h2 { margin: 6px 0 6px 0; color: var(--text-1); font-weight: 600; }
.empty-state p { margin: 0 0 14px 0; color: var(--text-2); }
.empty-state .empty-actions { display: inline-flex; gap: 10px; flex-wrap: wrap; justify-content: center; }
.empty-state .empty-actions button {
  padding: 10px 14px; border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text-1); border: 1px solid var(--border); cursor: pointer;
  transition: transform 150ms ease, box-shadow 200ms ease, border-color 200ms ease;
}
.empty-state .empty-actions button:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(124,92,255,0.25); border-color: rgba(124,92,255,0.45); }
.champion-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); border-color: rgba(124,92,255,0.35); }
.champion-card img { width: 100%; height: 150px; object-fit: cover; border-top-left-radius: var(--radius-lg); border-top-right-radius: var(--radius-lg); }
.champion-info { padding: 12px; }
.champion-info h3 { margin: 0 0 6px 0; color: var(--text-1); }
.champion-info p { margin: 6px 0; color: var(--text-2); }

.edit-icon { position: absolute; top: 10px; left: 10px; border-radius: 9999px; padding: 6px; cursor: pointer; background: rgba(0,0,0,0.3); border: 1px solid var(--border); }
.edit-icon:hover { background: rgba(0,0,0,0.5); }
.edit-icon::before { content: "✎"; color: var(--text-1); }

/* Forms & modal */
.form-buttons { display: flex; gap: 10px; margin-top: 16px; }

.delete-button {
  background: linear-gradient(180deg, rgba(231, 76, 60, 0.14), rgba(231, 76, 60, 0.1));
  color: var(--text-1);
  border: 1px solid var(--border);
  padding: 10px 15px; cursor: pointer; border-radius: var(--radius-sm); flex: 1;
  transition: background 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
}
.delete-button:hover { background: rgba(231, 76, 60, 0.22); border-color: rgba(231,76,60,0.5); }

#championForm button[type="submit"] {
  background: linear-gradient(180deg, rgba(124,92,255,0.12), rgba(76,215,246,0.10));
  color: var(--text-1); border: 1px solid var(--border);
  padding: 10px 15px; cursor: pointer; border-radius: var(--radius-sm); flex: 1;
  transition: transform 150ms ease, box-shadow 200ms ease, border-color 200ms ease;
}
#championForm button[type="submit"]:hover { transform: translateY(-1px); box-shadow: 0 10px 22px rgba(124,92,255,0.25); border-color: rgba(124,92,255,0.45); }

#championForm label { display: block; margin-top: 10px; color: var(--text-2); }
#championForm input, #championForm textarea, #championSelect {
  width: 100%; padding: 8px; margin-top: 5px; border-radius: var(--radius-sm);
  background: var(--surface-2); color: var(--text-1);
  border: 1px solid var(--border);
  transition: border-color 200ms ease, box-shadow 200ms ease, background 200ms ease;
}
#championForm input::placeholder, #championForm textarea::placeholder { color: var(--muted); }
#championForm input:focus, #championForm textarea:focus, #championSelect:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 2px var(--ring); }

.modal { display: none; position: fixed; z-index: 1000; inset: 0; overflow: auto; background-color: rgba(0,0,0,0.8); }
.modal-content {
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0)), var(--surface-1);
  margin: 5% auto; padding: 20px; border: 1px solid var(--border); width: 90%; max-width: 500px; border-radius: var(--radius-lg); position: relative; color: var(--text-1);
}
.close { color: var(--muted); position: absolute; top: 10px; right: 20px; font-size: 28px; font-weight: bold; cursor: pointer; transition: color 200ms ease; }
.close:hover, .close:focus { color: var(--text-1); }

/* Select2 theme */
.select2-container--default .select2-selection--single {
  background-color: var(--surface-2) !important; border: 1px solid var(--border) !important; color: var(--text-1) !important;
  border-radius: var(--radius-sm) !important; height: auto !important; min-height: 34px;
}
.select2-container--default .select2-selection--single .select2-selection__rendered { color: var(--text-1) !important; background-color: var(--surface-2) !important; line-height: 32px !important; }
.select2-container--default .select2-selection--single .select2-selection__arrow { height: 34px !important; }
.select2-container--default .select2-selection--single .select2-selection__arrow b { border-color: var(--text-1) transparent transparent transparent !important; }
.select2-container--default .select2-dropdown { background-color: var(--surface-2) !important; color: var(--text-1) !important; border: 1px solid var(--border) !important; }
.select2-container--default .select2-results__option--selected { background-color: rgba(124,92,255,0.25) !important; color: var(--text-1) !important; }
.select2-container--default .select2-results__option--highlighted { background-color: rgba(76,215,246,0.25) !important; color: #ffffff !important; }
.select2-container--default .select2-results__option { color: var(--text-1) !important; }
.select2-container--default .select2-search--dropdown .select2-search__field { background: var(--surface-2) !important; color: var(--text-1) !important; border: 1px solid var(--border) !important; border-radius: var(--radius-sm) !important; }
.select2-container--default .select2-search--dropdown .select2-search__field::placeholder { color: var(--muted) !important; }

/* Select2 champion thumbnails */
.select2-container--default .select2-results__option .champion-option,
.select2-container--default .select2-selection--single .champion-option { display: flex; align-items: center; }
.select2-container--default .select2-results__option img,
.select2-container--default .select2-selection--single .select2-selection__rendered img {
  width: 30px; height: 30px; margin-right: 10px; border-radius: 4px;
}

/* Responsive */
@media (max-width: 800px) {
  .filter-controls input { width: 120px; }
}
@media (max-width: 600px) {
  .toolbar { flex-direction: column; align-items: flex-start; }
  .sort-controls, .filter-controls { width: 100%; margin-bottom: 10px; }
  .filter-controls input { width: 100%; margin-bottom: 6px; }
  .filter-controls button { width: 100%; }
}