/* ── Swipe File — Design Tokens ─────────────────────────── */

/* ── Font Faces ──────────────────────────────────────────── */
@font-face {
  font-family: 'Instrument Serif';
  src: url('../fonts/InstrumentSerif-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Instrument Serif';
  src: url('../fonts/InstrumentSerif-Italic.woff2') format('woff2');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'DM Sans';
  src: url('../fonts/DMSans-Variable.woff2') format('woff2');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'JetBrains Mono';
  src: url('../fonts/JetBrainsMono-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* ── Dark Mode (default) ─────────────────────────────────── */
:root,
[data-theme="dark"] {
  --bg-deep: #0D0D0F;
  --bg-surface: #16161A;
  --bg-elevated: #1E1E24;
  --bg-overlay: rgba(13, 13, 15, 0.85);

  --accent-primary: #C8E64A;
  --accent-hover: #D4F06A;
  --accent-muted: #A8C43A;
  --accent-subtle: rgba(200, 230, 74, 0.10);
  --accent-glow: rgba(200, 230, 74, 0.35);

  --text-primary: #F2F0ED;
  --text-secondary: #8A8A8E;
  --text-tertiary: #555558;

  --border-subtle: rgba(255, 255, 255, 0.06);
  --border-focus: rgba(200, 230, 74, 0.4);

  --success: #4ADE80;
  --warning: #FBBF24;
  --danger: #F87171;

  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-elevated: 0 8px 32px rgba(0, 0, 0, 0.4), 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px var(--accent-glow), 0 0 60px rgba(200, 230, 74, 0.1);

  --glass-bg: rgba(22, 22, 26, 0.7);
  --glass-backdrop: blur(20px) saturate(180%);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);

  color-scheme: dark;
}

/* ── Typography ──────────────────────────────────────────── */
:root {
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', 'Fira Code', monospace;

  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.8125rem;    /* 13px */
  --text-base: 0.9375rem;  /* 15px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.5rem;       /* 24px */
  --text-2xl: 2.25rem;     /* 36px */
}

/* ── Spacing ─────────────────────────────────────────────── */
:root {
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
}

/* ── Radius ──────────────────────────────────────────────── */
:root {
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;
}

/* ── Transitions ─────────────────────────────────────────── */
:root {
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.45, 0, 0.55, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
}

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

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--text-primary);
  background: var(--bg-deep);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--text-tertiary);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ── Selection ───────────────────────────────────────────── */
::selection {
  background: var(--accent-subtle);
  color: var(--text-primary);
}

/* ── Focus ───────────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* ── Utility Classes ─────────────────────────────────────── */
.font-display {
  font-family: var(--font-display);
}

.font-mono {
  font-family: var(--font-mono);
}

.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-accent { color: var(--accent-primary); }

/* ── Common Components ───────────────────────────────────── */

/* Button base */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  line-height: 1.4;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Primary button (chartreuse) */
.btn-primary {
  background: var(--accent-primary);
  color: #0D0D0F;
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  background: var(--accent-muted);
  transform: translateY(0);
}

/* Ghost button */
.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border-subtle);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--text-tertiary);
}

/* Danger button */
.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover:not(:disabled) {
  filter: brightness(1.1);
}

/* Icon button */
.btn-icon {
  padding: var(--space-2);
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-out);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-icon:hover {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

/* Tag pill */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  background: var(--accent-subtle);
  color: var(--accent-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  line-height: 1.5;
  white-space: nowrap;
}

.tag-dismiss {
  cursor: pointer;
  opacity: 0.6;
  margin-left: 2px;
}

.tag-dismiss:hover {
  opacity: 1;
}

/* Card */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-elevated);
}

/* Input */
.input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  transition: border-color var(--duration-fast) var(--ease-out);
}

.input::placeholder {
  color: var(--text-tertiary);
}

.input:focus {
  outline: none;
  border-color: var(--border-focus);
}

/* Glassmorphism panel */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: var(--glass-border);
}

/* Pro badge */
.badge-pro {
  display: inline-flex;
  align-items: center;
  padding: 1px 6px;
  background: var(--accent-subtle);
  color: var(--accent-primary);
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.badge-pro[hidden] {
  display: none !important;
}

/* ── Reduced Motion ──────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ── Global Drag & Drop Overlay ──────────────────────────── */
.global-drag-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity var(--duration-fast) var(--ease-out),
              visibility var(--duration-fast) var(--ease-out);
}

.global-drag-overlay.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
}

.global-drag-overlay-border {
  position: absolute;
  inset: var(--space-4);
  border: 2px dashed var(--accent-primary);
  border-radius: var(--radius-xl);
  opacity: 0.5;
  pointer-events: none;
  animation: pulse-border 2s infinite;
}

.global-drag-overlay-content {
  position: relative;
  text-align: center;
  color: var(--text-primary);
  transform: translateY(10px);
  transition: transform var(--duration-fast) var(--ease-out);
}

.global-drag-overlay.is-active .global-drag-overlay-content {
  transform: translateY(0);
}

.global-drag-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  color: var(--accent-primary);
  background: var(--accent-subtle);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
}

.global-drag-title {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-2);
}

.global-drag-sub {
  color: var(--text-secondary);
  font-size: var(--text-base);
}

@keyframes pulse-border {
  0% { opacity: 0.3; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(0.99); }
  100% { opacity: 0.3; transform: scale(1); }
}