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

:root {
  --bg: #13111a;
  --bg-surface: rgba(28, 25, 42, 0.72);
  --bg-surface-2: rgba(36, 33, 56, 0.65);
  --bg-surface-3: rgba(48, 45, 72, 0.6);
  --border: rgba(245, 240, 232, 0.08);
  --border-strong: rgba(245, 240, 232, 0.16);
  --text: #f5f0e8;
  --text-muted: #a09890;
  --text-dim: #686070;
  --accent: #e8a87c;
  --accent-hover: #d4956a;
  --accent-dim: rgba(232, 168, 124, 0.12);
  --green: #22c55e;
  --blue: #3b82f6;
  --yellow: #eab308;
  --red: #ef4444;
  --magenta: #d946ef;
  --radius-xs: 4px;
  --radius: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 999px;
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-8: 32px;
  --sp-10: 40px;
  --sp-12: 48px;
  --sidebar-width: 260px;
  font-family: 'Sora', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-weight: 400;
  letter-spacing: -0.01em;
}

html,
body,
#app {
  height: 100%;
  width: 100%;
  overflow: hidden;
}

body {
  position: relative;
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 60% at 15% 10%, rgba(232, 168, 124, 0.07), transparent 55%),
    radial-gradient(ellipse 70% 50% at 85% 90%, rgba(245, 240, 232, 0.05), transparent 50%),
    var(--bg);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 40%),
    radial-gradient(circle at top left, rgba(255, 214, 170, 0.05), transparent 28%);
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

button:focus-visible,
input:focus-visible,
textarea:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(232, 168, 124, 0.12);
}

/* ── Layout ────────────────────────────────────────────── */

.layout {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

.main-content {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-8);
}

/* ── Shared content areas ───────────────────────────────── */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: var(--sp-3);
  color: var(--text-muted);
  text-align: center;
}

.empty-state h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
}

.surface-glass {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 100%),
    var(--bg-surface);
  backdrop-filter: blur(18px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow:
    0 8px 40px rgba(0, 0, 0, 0.28),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.label-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-dim);
}

/* ── Buttons ────────────────────────────────────────────── */

.btn-primary {
  padding: 10px 20px;
  background: var(--accent);
  color: #1a141f;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition:
    background 0.15s ease,
    transform 0.15s ease,
    box-shadow 0.15s ease;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(232, 168, 124, 0.28);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(232, 168, 124, 0.15);
}

.btn-primary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.btn-primary.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}

.btn-secondary {
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    color 0.15s ease;
}

.btn-secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.09);
  border-color: var(--border-strong);
  color: var(--text);
}

.btn-ghost {
  padding: 8px 16px;
  background: transparent;
  color: var(--text-dim);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 400;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.btn-ghost:hover:not(:disabled) {
  color: var(--text-muted);
  border-color: rgba(255, 255, 255, 0.12);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 16px;
  transition:
    background 0.15s ease,
    border-color 0.15s ease,
    color 0.15s ease,
    transform 0.15s ease;
}

.btn-icon:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
  color: var(--text);
  transform: translateY(-1px);
}

.btn-danger {
  padding: 8px 16px;
  background: transparent;
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.btn-danger:hover:not(:disabled) {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.5);
}

input[type='text'],
input[type='search'],
textarea {
  background: rgba(18, 16, 26, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  color: var(--text);
  padding: 10px 14px;
  font-size: 14px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  outline: none;
}

input[type='text']:focus,
input[type='search']:focus,
textarea:focus {
  border-color: rgba(232, 168, 124, 0.5);
  box-shadow: 0 0 0 3px rgba(232, 168, 124, 0.12);
}

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

input[type='range'] {
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 100px;
  outline: none;
}

input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 0 3px rgba(232, 168, 124, 0.2);
  transition: box-shadow 0.15s ease;
}

input[type='range']::-webkit-slider-thumb:hover {
  box-shadow: 0 0 0 5px rgba(232, 168, 124, 0.3), 0 0 12px rgba(232, 168, 124, 0.3);
}

@media (max-width: 860px) {
  .main-content {
    padding: var(--sp-6);
  }
}

@media (max-width: 720px) {
  html,
  body,
  #app {
    overflow: auto;
  }

  .layout {
    flex-direction: column;
    height: auto;
    min-height: 100vh;
  }

  .main-content {
    padding: var(--sp-5);
  }
}
