/* ── Theme Variables ── */

:root {
  /* ── Dark Theme (default) ── */
  --bg: #020203;
  --bg-elevated: #0d0e10;
  --bg-surface: #121316;
  --text: #f7f7f8;
  --text-secondary: #d6d6db;
  --text-muted: #9da0a8;
  --line: rgba(255, 255, 255, 0.13);
  --line-strong: rgba(255, 255, 255, 0.21);
  --dot: rgba(255, 255, 255, 0.22);
  --control: #23262b;
  --control-active: #45494f;
  --accent: #2563EB;
  --accent-glow: rgba(37, 99, 235, 0.3);
  --accent-soft: rgba(37, 99, 235, 0.08);
  --danger: #EF4444;
  --danger-soft: rgba(239, 68, 68, 0.08);
  --warning: #F59E0B;
  --success: #10B981;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 27px;
  --radius-pill: 999px;
  --font: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-bg-hover: rgba(255, 255, 255, 0.06);
  --glass-border-hover: rgba(255, 255, 255, 0.1);
}

[data-theme="light"] {
  /* ── Light Theme ── */
  --bg: #F8FAFC;
  --bg-elevated: #FFFFFF;
  --bg-surface: #F1F5F9;
  --text: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --line: rgba(0, 0, 0, 0.08);
  --line-strong: rgba(0, 0, 0, 0.12);
  --dot: rgba(0, 0, 0, 0.15);
  --control: #E2E8F0;
  --control-active: #CBD5E1;
  --accent: #2563EB;
  --accent-glow: rgba(37, 99, 235, 0.15);
  --accent-soft: rgba(37, 99, 235, 0.06);
  --danger: #EF4444;
  --danger-soft: rgba(239, 68, 68, 0.06);
  --warning: #F59E0B;
  --success: #10B981;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04), 0 1px 3px rgba(0,0,0,0.02);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.04), 0 2px 4px -2px rgba(0,0,0,0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.04), 0 4px 6px -4px rgba(0,0,0,0.02);
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(148, 163, 184, 0.2);
  --glass-bg-hover: rgba(255, 255, 255, 0.95);
  --glass-border-hover: rgba(148, 163, 184, 0.3);
}

/* ── Base ── */
* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  min-height: 100%;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Theme Toggle Button ── */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--glass-bg);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  font-size: 18px;
  line-height: 1;
}

.theme-toggle:hover {
  background: var(--glass-bg-hover);
  border-color: var(--line-strong);
  color: var(--text);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 40px;
  padding: 0 20px;
  border-radius: var(--radius-pill);
  font-family: var(--font);
  font-size: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.1) inset, var(--shadow-sm);
}

.btn-primary:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--accent-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--line);
}

.btn-ghost:hover {
  background: var(--glass-bg-hover);
  border-color: var(--line-strong);
  color: var(--text);
}

.btn-sm {
  height: 32px;
  padding: 0 14px;
  font-size: 13px;
}

/* ── Cards ── */
.card {
  padding: 20px;
  border-radius: var(--radius-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  transition: all var(--transition);
}

.card:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
}

/* ── Inputs ── */
input, textarea, select {
  font-family: var(--font);
  font-size: 14px;
  color: var(--text);
  background: var(--bg-surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 10px 14px;
  outline: none;
  transition: all var(--transition);
}

input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

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

/* ── Glass Panel ── */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

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

::-webkit-scrollbar-thumb {
  background: var(--control);
  border-radius: var(--radius-pill);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--control-active);
}

/* ── Utility ── */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}