/* Shared design system: light + dark themes for the player UI and admin console.
   Default follows the OS/browser preference (prefers-color-scheme); a manual
   toggle can override it by setting data-theme="light" or "dark" on <html>,
   persisted in localStorage as "otdb-theme". */

:root {
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);

  /* Light theme (default) */
  --bg: #f5f6fa;
  --bg-elevated: #ffffff;
  --bg-inset: #edeff5;
  --text: #1a1d29;
  --text-muted: #5b6072;
  --border: #dfe2ea;
  --accent: #5b4fe9;
  --accent-hover: #4a3fd6;
  --accent-contrast: #ffffff;
  --success: #1a9c5a;
  --success-bg: #e4f8ee;
  --danger: #d63a3a;
  --danger-bg: #fdeaea;
  --warning: #b3781c;
  --warning-bg: #fbf1de;
  --focus-ring: #5b4fe9;

  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14151f;
    --bg-elevated: #1d1f2e;
    --bg-inset: #262838;
    --text: #eef0f7;
    --text-muted: #a3a7bd;
    --border: #34364a;
    --accent: #8b7fff;
    --accent-hover: #a39aff;
    --accent-contrast: #14151f;
    --success: #3ddc8b;
    --success-bg: #123626;
    --danger: #ff6b6b;
    --danger-bg: #3a1c1c;
    --warning: #f2b84b;
    --warning-bg: #3a2e12;
    --focus-ring: #a39aff;

    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #14151f;
  --bg-elevated: #1d1f2e;
  --bg-inset: #262838;
  --text: #eef0f7;
  --text-muted: #a3a7bd;
  --border: #34364a;
  --accent: #8b7fff;
  --accent-hover: #a39aff;
  --accent-contrast: #14151f;
  --success: #3ddc8b;
  --success-bg: #123626;
  --danger: #ff6b6b;
  --danger-bg: #3a1c1c;
  --warning: #f2b84b;
  --warning-bg: #3a2e12;
  --focus-ring: #a39aff;

  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  min-height: 100%;
}

body {
  transition: background-color 0.15s ease, color 0.15s ease;
}

a { color: var(--accent); }

button, input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.65em 1.25em;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.05s ease;
}
.btn:hover { background: var(--accent-hover); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
  background: var(--bg-inset);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover { background: var(--border); }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { filter: brightness(1.1); }

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
select {
  width: 100%;
  padding: 0.6em 0.8em;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--bg-inset);
  color: var(--text);
}

label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.35em;
}

.badge {
  display: inline-block;
  padding: 0.2em 0.6em;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.badge-success { background: var(--success-bg); color: var(--success); }
.badge-danger { background: var(--danger-bg); color: var(--danger); }
.badge-warning { background: var(--warning-bg); color: var(--warning); }
.badge-muted { background: var(--bg-inset); color: var(--text-muted); }

.alert {
  padding: 0.85em 1em;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.alert-danger { background: var(--danger-bg); color: var(--danger); }
.alert-success { background: var(--success-bg); color: var(--success); }
.alert-warning { background: var(--warning-bg); color: var(--warning); }

.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.4em 0.8em;
  cursor: pointer;
  color: var(--text);
  font-size: 0.85rem;
}

.text-muted { color: var(--text-muted); }
.mt-0 { margin-top: 0; }