/**
 * DuckImg design tokens — restrained iOS-like system
 * Load after style.css so these override legacy variables.
 */

:root {
  /* Brand accent — muted indigo, not neon */
  --primary-color: #3b82f6;
  --primary-light: #60a5fa;
  --primary-dark: #2563eb;
  --primary-light-rgb: 96, 165, 250;
  --primary-dark-rgb: 37, 99, 235;
  --primary-gradient: linear-gradient(180deg, #60a5fa, #2563eb);
  --primary-soft-glow: 0 0 0 transparent;

  --secondary-color: #6366f1;
  --secondary-light: #818cf8;
  --secondary-dark: #4f46e5;
  --accent-color: #3b82f6;
  --accent-light: #60a5fa;
  --accent-dark: #2563eb;
  --success-color: #34c759;
  --success-light: #30d158;
  --warning-color: #ff9f0a;
  --warning-light: #ffb340;
  --error-color: #ff3b30;
  --error-light: #ff6961;

  /* Light surfaces (Apple-ish greys) */
  --text-color: #1d1d1f;
  --text-light: #6e6e73;
  --text-lighter: #86868b;
  --bg-color: #f5f5f7;
  --card-bg: #ffffff;
  --card-bg-hover: #f0f0f2;
  --border-color: rgba(0, 0, 0, 0.08);
  --divider-color: rgba(0, 0, 0, 0.06);
  --fill-tertiary: rgba(120, 120, 128, 0.12);
  --fill-secondary: rgba(120, 120, 128, 0.16);
  --fill-primary: rgba(120, 120, 128, 0.2);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.5);
  --scrim: rgba(0, 0, 0, 0.28);

  /* Dark surfaces */
  --dark-bg: #000000;
  --dark-card-bg: #1c1c1e;
  --dark-card-bg-hover: #2c2c2e;
  --dark-text: #f5f5f7;
  --dark-text-light: #a1a1a6;
  --dark-text-lighter: #6e6e73;
  --dark-border: rgba(255, 255, 255, 0.1);
  --dark-divider: rgba(255, 255, 255, 0.08);
  --dark-glass-bg: rgba(28, 28, 30, 0.78);
  --dark-glass-border: rgba(255, 255, 255, 0.08);

  /* Radius */
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius: 14px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Shadows — whisper only */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 24px 48px rgba(0, 0, 0, 0.12);
  --shadow-inner: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  --shadow-colored: var(--shadow-sm);
  --shadow-colored-lg: var(--shadow);

  /* Motion: calm, critically damped feel via CSS fallbacks */
  --transition-bounce: 0.35s cubic-bezier(0.32, 0.72, 0, 1);
  --transition-fast: 0.15s cubic-bezier(0.32, 0.72, 0, 1);
  --transition: 0.3s cubic-bezier(0.32, 0.72, 0, 1);
  --transition-slow: 0.45s cubic-bezier(0.32, 0.72, 0, 1);
  --transition-ultra-slow: 0.55s cubic-bezier(0.32, 0.72, 0, 1);

  /* Layout */
  --container-width: 980px;
  --spacing-3xs: 2px;
  --spacing-2xs: 4px;
  --spacing-xs: 8px;
  --spacing-sm: 12px;
  --spacing: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  --spacing-2xl: 64px;
  --spacing-3xl: 96px;

  /* Shell */
  --menu-width: 260px;
  --menu-collapsed-width: 72px;
  --header-height: 52px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);

  /* z-index scale */
  --z-header: 100;
  --z-overlay: 200;
  --z-drawer: 300;
  --z-modal: 400;
  --z-toast: 500;
  --z-loader: 600;

  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
    "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  background: var(--bg-color);
  color: var(--text-color);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* dark tokens on html so html+body+shell share one paint surface */
html.dark-mode,
body.dark-mode {
  background: var(--dark-bg) !important;
  color: var(--dark-text);
  --bg-color: #000000;
  --card-bg: #1c1c1e;
  --card-bg-hover: #2c2c2e;
  --text-color: #f5f5f7;
  --text-light: #a1a1a6;
  --text-lighter: #6e6e73;
  --border-color: rgba(255, 255, 255, 0.1);
  --divider-color: rgba(255, 255, 255, 0.08);
  --glass-bg: rgba(28, 28, 30, 0.78);
  --glass-border: rgba(255, 255, 255, 0.08);
  --fill-tertiary: rgba(120, 120, 128, 0.24);
  --fill-secondary: rgba(120, 120, 128, 0.28);
  --fill-primary: rgba(120, 120, 128, 0.36);
  --scrim: rgba(0, 0, 0, 0.5);
}

.dark-mode-transition {
  transition: none !important;
}

/* Typography helpers */
.dk-display {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 700;
}

.dk-title {
  font-size: 1.375rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
  font-weight: 600;
}

.dk-body {
  font-size: 1rem;
  line-height: 1.5;
  letter-spacing: -0.01em;
}

.dk-caption {
  font-size: 0.8125rem;
  line-height: 1.35;
  color: var(--text-light);
}

/* Instant press feedback (apple-design §1) */
.dk-press:active,
button:active:not(:disabled),
.menu-item:active,
.action-btn:active,
.copy-btn:active,
.login-btn:active,
.header-action-btn:active {
  transform: scale(0.97);
  transition: transform 100ms ease-out;
}

/* Touch targets & inputs never zoom-trap on iOS */
input,
textarea,
select,
button {
  font-size: 16px;
  font-family: inherit;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (prefers-reduced-transparency: reduce) {
  :root {
    --glass-bg: #ffffff;
    --dark-glass-bg: #1c1c1e;
  }
  body.dark-mode {
    --glass-bg: #1c1c1e;
  }
}