/* ============ Design tokens ============ */
/* Layer map: -1 atmosphere orbs · 0 content · 40 sticky actionbar · 50 topbar ·
   90 film grain · 100 toast · 950 reorder panel */
:root {
  --bg: #f6f7fb;
  --bg-elev: #ffffff;
  --bg-sunken: #eef0f6;
  --text: #0f172a;
  --text-muted: #5b6577;
  --text-faint: #8b94a7;
  --border: #e3e7f0;
  --border-strong: #cdd4e2;

  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --ring: rgba(79, 70, 229, 0.35);

  --accent: #4f46e5;
  --accent-2: #7c3aed;
  --accent-soft: #eef2ff;
  --on-accent-soft: #4338ca;
  --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);

  --success: #059669;
  --success-soft: #ecfdf5;
  --danger: #dc2626;
  --danger-soft: #fef2f2;
  --warning: #b45309;
  --warning-soft: #fffbeb;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04), 0 2px 8px -2px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 2px 4px rgba(15, 23, 42, 0.03), 0 8px 24px -8px rgba(15, 23, 42, 0.1),
    0 24px 48px -24px rgba(15, 23, 42, 0.12);
  --shadow-lg: 0 2px 4px rgba(15, 23, 42, 0.04), 0 16px 40px -12px rgba(15, 23, 42, 0.16),
    0 32px 64px -32px rgba(15, 23, 42, 0.18);
  --shadow-glow: 0 8px 24px -6px rgba(79, 70, 229, 0.45);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-2xl: 28px;
  --radius-full: 999px;

  --font: "Plus Jakarta Sans", "Segoe UI", system-ui, sans-serif;
  --font-display: "Space Grotesk", "Plus Jakarta Sans", system-ui, sans-serif;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in: cubic-bezier(0.55, 0.06, 0.68, 0.19);
  --ease-spring: cubic-bezier(0.32, 0.72, 0, 1);
  color-scheme: light;
}

[data-theme="dark"] {
  --bg: #0b1120;
  --bg-elev: #121a2f;
  --bg-sunken: #0e1526;
  --text: #e6eaf3;
  --text-muted: #9aa7bd;
  --text-faint: #6b7a93;
  --border: #22304a;
  --border-strong: #32425f;

  --primary: #818cf8;
  --primary-hover: #a5b4fc;
  --ring: rgba(129, 140, 248, 0.4);

  --accent: #818cf8;
  --accent-2: #c084fc;
  --accent-soft: rgba(99, 102, 241, 0.16);
  --on-accent-soft: #a5b4fc;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);

  --success: #34d399;
  --success-soft: rgba(16, 185, 129, 0.14);
  --danger: #f87171;
  --danger-soft: rgba(239, 68, 68, 0.14);
  --warning: #fbbf24;
  --warning-soft: rgba(245, 158, 11, 0.14);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.25), 0 2px 8px -2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.35), 0 24px 48px -12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px -8px rgba(0, 0, 0, 0.4), 0 32px 64px -16px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 8px 24px -6px rgba(99, 102, 241, 0.5);
  color-scheme: dark;
}

body[data-tool="split"] {
  --accent: #0284c7;
  --accent-2: #3b82f6;
  --accent-soft: #e0f2fe;
  --on-accent-soft: #0369a1;
  --accent-gradient: linear-gradient(135deg, #0284c7 0%, #3b82f6 100%);
  --shadow-glow: 0 8px 24px rgba(2, 132, 199, 0.35);
}
[data-theme="dark"] body[data-tool="split"] {
  --accent: #38bdf8;
  --accent-2: #60a5fa;
  --accent-soft: rgba(56, 189, 248, 0.16);
  --on-accent-soft: #7dd3fc;
  --accent-gradient: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 100%);
}

body[data-tool="compress"] {
  --accent: #059669;
  --accent-2: #10b981;
  --accent-soft: #d1fae5;
  --on-accent-soft: #047857;
  --accent-gradient: linear-gradient(135deg, #059669 0%, #10b981 100%);
  --shadow-glow: 0 8px 24px rgba(5, 150, 105, 0.35);
}
[data-theme="dark"] body[data-tool="compress"] {
  --accent: #34d399;
  --accent-2: #6ee7b7;
  --accent-soft: rgba(16, 185, 129, 0.16);
  --on-accent-soft: #6ee7b7;
  --accent-gradient: linear-gradient(135deg, #059669 0%, #34d399 100%);
}

body[data-tool="organize"] {
  --accent: #d97706;
  --accent-2: #f59e0b;
  --accent-soft: #fef3c7;
  --on-accent-soft: #b45309;
  --accent-gradient: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
  --shadow-glow: 0 8px 24px rgba(217, 119, 6, 0.35);
}
[data-theme="dark"] body[data-tool="organize"] {
  --accent: #fbbf24;
  --accent-2: #f59e0b;
  --accent-soft: rgba(245, 158, 11, 0.16);
  --on-accent-soft: #fcd34d;
  --accent-gradient: linear-gradient(135deg, #d97706 0%, #f59e0b 100%);
}

/* ============ Base ============ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  transition: background 0.3s var(--ease-out), color 0.3s var(--ease-out);
}

/* Fixed atmosphere: accent orbs (layer -1, behind everything) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(640px 480px at 12% 6%, color-mix(in srgb, var(--accent) 9%, transparent), transparent 65%),
    radial-gradient(760px 560px at 90% 14%, color-mix(in srgb, var(--accent-2) 8%, transparent), transparent 65%),
    radial-gradient(900px 700px at 50% 108%, color-mix(in srgb, var(--accent) 7%, transparent), transparent 60%);
}
[data-theme="dark"] body::before {
  background:
    radial-gradient(640px 480px at 12% 6%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 65%),
    radial-gradient(760px 560px at 90% 14%, color-mix(in srgb, var(--accent-2) 13%, transparent), transparent 65%),
    radial-gradient(900px 700px at 50% 108%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 60%);
}

/* Fixed film grain (layer 90, above content, never blocks input) */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 90;
  pointer-events: none;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
}

img,
svg,
canvas {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
}

::selection {
  background: color-mix(in srgb, var(--accent) 25%, transparent);
}

:focus-visible {
  outline: 3px solid var(--ring);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

[hidden] {
  display: none !important;
}

a {
  color: var(--accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* ============ Layout ============ */
.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 20px;
  flex: 1;
}

.topbar {
  position: sticky;
  top: 12px;
  z-index: 50;
  max-width: min(1140px, calc(100% - 24px));
  margin: 12px auto 0;
  padding: 6px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elev) 74%, transparent);
  backdrop-filter: blur(18px) saturate(1.5);
  -webkit-backdrop-filter: blur(18px) saturate(1.5);
  box-shadow: var(--shadow-sm);
}
[data-theme="dark"] .topbar {
  background: color-mix(in srgb, var(--bg-elev) 62%, transparent);
  border-color: var(--border-strong);
}

.topbar-inner {
  max-width: none;
  padding: 4px 6px 4px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
}
.brand:hover {
  text-decoration: none;
}

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--accent-gradient);
  display: grid;
  place-items: center;
  color: #fff;
  box-shadow: var(--shadow-glow);
  flex-shrink: 0;
}

.brand-dot {
  color: var(--accent);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.privacy-pill {
  display: none;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--success);
  background: var(--success-soft);
  border: 1px solid color-mix(in srgb, var(--success) 25%, transparent);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  white-space: nowrap;
}
.privacy-pill .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 25%, transparent);
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1;
  padding: 14px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-full);
  transition: transform 0.2s var(--ease-spring), box-shadow 0.2s var(--ease-spring),
    background 0.2s var(--ease-spring), border-color 0.2s var(--ease-spring),
    color 0.2s var(--ease-spring), filter 0.2s var(--ease-spring);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.btn:active {
  transform: scale(0.97);
}

/* nested "button-in-button" trailing icon */
.btn .btn-ico {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.22);
  margin: -7px -10px -7px 8px;
  transition: transform 0.3s var(--ease-spring);
}
.btn .btn-ico svg {
  width: 14px;
  height: 14px;
  display: block;
}
.btn:hover .btn-ico {
  transform: translateX(2px) scale(1.06);
}

.btn-primary {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  filter: brightness(1.06);
  transform: translateY(-1px);
  box-shadow: 0 12px 28px -6px color-mix(in srgb, var(--accent) 45%, transparent);
}
.btn-primary:active {
  transform: scale(0.97);
}
.btn-primary:disabled {
  opacity: 0.5;
  filter: grayscale(0.4);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-outline {
  background: color-mix(in srgb, var(--bg-elev) 85%, transparent);
  color: var(--text);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
}
.btn-ghost:hover {
  background: var(--bg-sunken);
  color: var(--text);
}

.btn-danger {
  background: var(--danger-soft);
  color: var(--danger);
  border-color: transparent;
}
.btn-danger:hover {
  background: color-mix(in srgb, var(--danger) 14%, transparent);
}

.btn-sm {
  padding: 9px 16px;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

.btn .spinner {
  width: 16px;
  height: 16px;
}

.icon-btn {
  width: 44px;
  height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-muted);
  transition: background 0.15s var(--ease-out), color 0.15s var(--ease-out),
    transform 0.15s var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}
.icon-btn:hover {
  background: var(--bg-sunken);
  color: var(--text);
}
.icon-btn:active {
  transform: scale(0.92);
}
.icon-btn.danger:hover {
  background: var(--danger-soft);
  color: var(--danger);
}

.icon-btn svg {
  width: 20px;
  height: 20px;
}

.theme-toggle svg {
  display: none;
}
.theme-toggle svg:first-child {
  display: block;
}
[data-theme="dark"] .theme-toggle svg:first-child {
  display: none;
}
[data-theme="dark"] .theme-toggle svg:last-child {
  display: block;
}

/* ============ Home ============ */
.hero {
  text-align: center;
  padding: 76px 0 36px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--success);
  background: var(--success-soft);
  border: 1px solid color-mix(in srgb, var(--success) 25%, transparent);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  animation: fade-down 0.5s var(--ease-out) both;
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 22%, transparent);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 4.4rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
  font-weight: 700;
  margin: 24px 0 18px;
  animation: fade-up 0.6s 0.05s var(--ease-spring) both;
}

.hero h1 .grad {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero p {
  max-width: 600px;
  margin: 0 auto;
  color: var(--text-muted);
  font-size: clamp(1rem, 2.5vw, 1.14rem);
  animation: fade-up 0.6s 0.1s var(--ease-spring) both;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
  margin-top: 26px;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-muted);
  animation: fade-up 0.6s 0.15s var(--ease-spring) both;
}
.hero-features span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.hero-features svg {
  width: 16px;
  height: 16px;
  color: var(--success);
}

.tools-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  padding: 44px 0 24px;
}

/* double-bezel: thick shell border = machined tray, bg = glass core */
.tool-card {
  position: relative;
  display: block;
  background: var(--bg-elev);
  border: 8px solid color-mix(in srgb, var(--border) 45%, var(--bg));
  border-radius: var(--radius-2xl);
  padding: 22px;
  color: var(--text);
  text-decoration: none;
  box-shadow: inset 0 0 0 1px var(--border), var(--shadow-sm);
  transition: transform 0.25s var(--ease-spring), box-shadow 0.25s var(--ease-spring),
    border-color 0.25s var(--ease-spring);
  animation: fade-up 0.5s var(--ease-spring) both;
}
[data-theme="dark"] .tool-card {
  border-color: color-mix(in srgb, var(--border) 55%, var(--bg));
}
.tool-card:hover {
  text-decoration: none;
  transform: translateY(-4px);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--accent) 35%, var(--border)),
    0 16px 40px -12px color-mix(in srgb, var(--accent) 18%, transparent), var(--shadow-md);
  border-color: color-mix(in srgb, var(--accent) 30%, var(--border));
}

.tool-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-lg);
  display: grid;
  place-items: center;
  color: var(--on-accent-soft);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  margin-bottom: 18px;
  transition: transform 0.25s var(--ease-spring);
}
.tool-card:hover .tool-card-icon {
  transform: translateY(-2px) scale(1.04);
}
.tool-card-icon svg {
  width: 26px;
  height: 26px;
}

.tool-card h2 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.18rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.tool-card p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.tool-card .card-arrow {
  position: absolute;
  top: 22px;
  right: 22px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg-elev) 80%, transparent);
  color: var(--text-faint);
  transition: transform 0.25s var(--ease-spring), color 0.25s var(--ease-spring),
    border-color 0.25s var(--ease-spring);
}
.tool-card:hover .card-arrow {
  transform: translateX(3px) rotate(-8deg);
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 40%, var(--border));
}
.tool-card .card-arrow svg {
  width: 15px;
  height: 15px;
}

.tint-sky {
  --accent: #0284c7;
  --accent-2: #0ea5e9;
  --accent-soft: #e0f2fe;
  --on-accent-soft: #0369a1;
  --shadow-glow: 0 8px 24px rgba(2, 132, 199, 0.35);
}
.tint-emerald {
  --accent: #059669;
  --accent-2: #10b981;
  --accent-soft: #d1fae5;
  --on-accent-soft: #047857;
  --shadow-glow: 0 8px 24px rgba(5, 150, 105, 0.35);
}
.tint-amber {
  --accent: #d97706;
  --accent-2: #f59e0b;
  --accent-soft: #fef3c7;
  --on-accent-soft: #b45309;
  --shadow-glow: 0 8px 24px rgba(217, 119, 6, 0.35);
}
[data-theme="dark"] .tint-sky {
  --accent: #38bdf8;
  --accent-soft: rgba(56, 189, 248, 0.16);
  --on-accent-soft: #7dd3fc;
}
[data-theme="dark"] .tint-emerald {
  --accent: #34d399;
  --accent-soft: rgba(16, 185, 129, 0.16);
  --on-accent-soft: #6ee7b7;
}
[data-theme="dark"] .tint-amber {
  --accent: #fbbf24;
  --accent-soft: rgba(245, 158, 11, 0.16);
  --on-accent-soft: #fcd34d;
}

/* ============ Tool pages ============ */
.tool-head {
  padding: 44px 0 8px;
  animation: fade-up 0.55s var(--ease-spring) both;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 18px;
  padding: 7px 12px 7px 8px;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  transition: color 0.15s var(--ease-out), background 0.15s var(--ease-out),
    border-color 0.15s var(--ease-out), transform 0.15s var(--ease-out);
}
.back-link:hover {
  color: var(--accent);
  text-decoration: none;
  background: var(--bg-sunken);
  border-color: var(--border);
  transform: translateX(-2px);
}
.back-link svg {
  width: 16px;
  height: 16px;
}

.tool-title {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}
.tool-title .tool-card-icon {
  margin-bottom: 0;
  width: 56px;
  height: 56px;
}
.tool-title h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 4.5vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.tool-sub {
  margin: 0 0 6px;
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 620px;
}

.step {
  animation: rise 0.4s var(--ease-spring) both;
}

/* double-bezel: thick shell border = tray, inner bg = glass core */
.step-card {
  background: var(--bg-elev);
  border: 10px solid color-mix(in srgb, var(--border) 42%, var(--bg));
  border-radius: 26px;
  box-shadow: inset 0 0 0 1px var(--border), var(--shadow-md);
  padding: 20px;
  margin: 20px 0;
}
[data-theme="dark"] .step-card {
  border-color: color-mix(in srgb, var(--border) 55%, var(--bg));
}

.section-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-faint);
  margin-bottom: 14px;
}

/* ============ Dropzone ============ */
.dropzone {
  width: 100%;
  min-height: 210px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: color-mix(in srgb, var(--bg-elev) 80%, transparent);
  border: 1.5px dashed var(--border-strong);
  border-radius: 18px;
  color: var(--text-muted);
  font-size: 1rem;
  padding: 32px 20px;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.04), var(--shadow-sm);
  transition: border-color 0.2s var(--ease-spring), background 0.2s var(--ease-spring),
    transform 0.2s var(--ease-spring), box-shadow 0.2s var(--ease-spring);
  -webkit-tap-highlight-color: transparent;
  animation: rise 0.4s var(--ease-spring) both;
}
.dropzone:hover,
.dropzone.dragover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px -12px color-mix(in srgb, var(--accent) 25%, transparent);
}

.dropzone-icon {
  width: 62px;
  height: 62px;
  border-radius: var(--radius-full);
  display: grid;
  place-items: center;
  background: var(--accent-soft);
  color: var(--on-accent-soft);
  transition: transform 0.25s var(--ease-out);
}
.dropzone:hover .dropzone-icon {
  transform: translateY(-3px);
}
.dropzone-icon svg {
  width: 30px;
  height: 30px;
}

.dropzone strong {
  color: var(--accent);
  font-weight: 700;
}

.dropzone .dz-main {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--text);
}

.dropzone .dz-hint {
  font-size: 0.85rem;
  color: var(--text-faint);
}

/* ============ File list ============ */
.file-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 10px 12px;
  box-shadow: var(--shadow-sm);
  animation: rise 0.3s var(--ease-spring) both;
  transition: border-color 0.15s var(--ease-out), opacity 0.2s var(--ease-out),
    box-shadow 0.15s var(--ease-out);
}
.file-item:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}
.file-item.is-picked {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent),
    var(--shadow-md);
}

.file-thumb {
  width: 40px;
  height: 54px;
  border-radius: 8px;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.04);
  overflow: hidden;
  flex-shrink: 0;
  display: grid;
  place-items: center;
}
.file-thumb canvas {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.file-thumb .file-fallback {
  width: 20px;
  height: 20px;
  color: var(--text-faint);
}

.file-info {
  flex: 1;
  min-width: 0;
}
.file-name {
  font-weight: 600;
  font-size: 0.92rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.file-meta {
  font-size: 0.8rem;
  color: var(--text-faint);
  display: flex;
  gap: 8px;
  align-items: center;
}

.file-actions {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}
.file-actions .icon-btn {
  width: 40px;
  height: 40px;
  min-width: 40px;
}

/* ============ Thumbnail grid ============ */
.thumb-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.thumb-card {
  position: relative;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  overflow: hidden;
  padding: 0;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s var(--ease-spring), border-color 0.2s var(--ease-spring),
    box-shadow 0.2s var(--ease-spring), opacity 0.2s var(--ease-out);
  -webkit-tap-highlight-color: transparent;
}
.thumb-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.thumb-card.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
.thumb-card.deleted {
  opacity: 0.45;
  border-color: var(--danger);
}

.thumb-card canvas {
  width: 100%;
  height: auto;
  pointer-events: none;
}

.thumb-check {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--bg-elev);
  border: 2px solid var(--border-strong);
  color: transparent;
  transition: all 0.15s var(--ease-out);
  z-index: 2;
}
.thumb-card.selected .thumb-check {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.thumb-check svg {
  width: 14px;
  height: 14px;
}

.thumb-num {
  position: absolute;
  bottom: 8px;
  left: 8px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text);
  background: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  z-index: 2;
  backdrop-filter: blur(4px);
}

.thumb-badge {
  position: absolute;
  bottom: 8px;
  right: 8px;
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--accent);
  color: #fff;
  z-index: 2;
}
.thumb-badge svg {
  width: 11px;
  height: 11px;
}

.thumb-x {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--danger);
  color: #fff;
  z-index: 2;
  animation: pop 0.2s var(--ease-out) both;
}
.thumb-x svg {
  width: 13px;
  height: 13px;
}

.thumb-loading {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: var(--bg-sunken);
}

/* ============ Segmented control ============ */
.segmented {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 1fr;
  gap: 4px;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 5px;
}
.segmented button {
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.88rem;
  padding: 10px 8px;
  border-radius: var(--radius-full);
  transition: background 0.2s var(--ease-spring), color 0.2s var(--ease-spring),
    box-shadow 0.2s var(--ease-spring);
  -webkit-tap-highlight-color: transparent;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.segmented button.active {
  background: var(--bg-elev);
  color: var(--text);
  box-shadow: var(--shadow-sm);
}

/* ============ Level cards (compress) ============ */
.level-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.level-card {
  position: relative;
  display: block;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--bg-elev);
  padding: 14px 16px;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s var(--ease-spring), background 0.2s var(--ease-spring),
    transform 0.2s var(--ease-spring), box-shadow 0.2s var(--ease-spring);
  -webkit-tap-highlight-color: transparent;
}
.level-card:hover {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.level-card.active {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 18%, transparent);
}
.level-card:active {
  transform: scale(0.99);
}
.level-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.level-name {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.95rem;
}
.level-desc {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-top: 3px;
}
.level-warn {
  display: none;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--warning);
  margin-top: 6px;
  align-items: center;
  gap: 6px;
}
.level-card.lossy .level-warn {
  display: flex;
}
.level-warn svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.level-radio-dot {
  width: 20px;
  height: 20px;
  min-width: 20px;
  border-radius: 50%;
  border: 2px solid var(--border-strong);
  display: grid;
  place-items: center;
  transition: all 0.15s var(--ease-out);
}
.level-card.active .level-radio-dot {
  border-color: var(--accent);
  background: var(--accent);
}
.level-radio-dot::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  transform: scale(0);
  transition: transform 0.15s var(--ease-out);
}
.level-card.active .level-radio-dot::after {
  transform: scale(1);
}

/* ============ Range input (split) ============ */
.range-input-wrap {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.range-input {
  width: 100%;
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  background: var(--bg-elev);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-md);
  padding: 13px 16px;
  transition: border-color 0.15s var(--ease-out), box-shadow 0.15s var(--ease-out);
}
.range-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  min-height: 4px;
}
.chip {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--on-accent-soft);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.range-error {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--danger);
  min-height: 1.2em;
}

/* ============ Progress ============ */
.progress-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  padding: 30px 0;
  text-align: center;
}
.progress-bar {
  width: 100%;
  max-width: 420px;
  height: 8px;
  background: var(--bg-sunken);
  border-radius: var(--radius-full);
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  border-radius: var(--radius-full);
  background: var(--accent-gradient);
  transition: width 0.25s var(--ease-out);
}
.progress-text {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

/* ============ Result ============ */
.result-card {
  text-align: center;
  padding: 40px 24px;
}
.result-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--success-soft);
  color: var(--success);
  border: 1px solid color-mix(in srgb, var(--success) 25%, transparent);
  box-shadow: 0 12px 32px -12px color-mix(in srgb, var(--success) 30%, transparent);
  animation: pop 0.4s var(--ease-spring) both;
}
.result-icon svg {
  width: 34px;
  height: 34px;
}
.result-card h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.45rem;
  letter-spacing: -0.02em;
}
.result-card .result-file {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  word-break: break-all;
}

.size-compare {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 10px 22px;
  margin-bottom: 22px;
  flex-wrap: wrap;
  justify-content: center;
}
.size-compare .size-old {
  color: var(--text-faint);
  text-decoration: line-through;
  font-weight: 600;
}
.size-compare .size-new {
  color: var(--success);
  font-weight: 800;
  font-size: 1.05rem;
}
.size-compare .arrow {
  color: var(--text-faint);
  display: inline-flex;
}
.size-compare .arrow svg {
  width: 16px;
  height: 16px;
}
.save-badge {
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--success);
  background: var(--success-soft);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

/* ============ Sticky action bar ============ */
.actionbar {
  position: sticky;
  bottom: 0;
  z-index: 40;
  margin: 22px -20px -20px;
  padding: 14px 20px calc(14px + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-top: 1px solid var(--border);
  box-shadow: 0 -12px 32px -16px rgba(15, 23, 42, 0.14);
  animation: rise 0.3s var(--ease-spring) both;
}
.actionbar-inner {
  max-width: 1140px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.actionbar .btn {
  flex: 1;
}
.actionbar-info {
  display: none;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
}
.actionbar-info strong {
  color: var(--accent);
}

/* ============ Toolbar (organize) ============ */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}
.toolbar .toolbar-spacer {
  flex: 1;
}
.toolbar .btn,
.toolbar .icon-btn {
  border-radius: var(--radius-sm);
}
.toolbar-group {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px;
  background: var(--bg-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
}
.toolbar-group .icon-btn {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: transparent;
  border-radius: var(--radius-sm);
}
.toolbar-group .icon-btn:not(:disabled):hover {
  background: var(--bg-elev);
  color: var(--accent);
}
.toolbar .icon-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ============ Pick-to-position reorder ============ */
.reordering {
  user-select: none;
  -webkit-user-select: none;
}
.reordering .thumb-card,
.reordering .file-item {
  cursor: pointer;
}

.thumb-card.is-picked,
.file-item.is-picked {
  opacity: 0.85;
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent),
    var(--shadow-md);
}

.reorder-panel {
  position: fixed;
  left: 0;
  right: 0;
  margin-inline: auto;
  bottom: 92px;
  z-index: 950;
  width: min(560px, calc(100vw - 32px));
  max-height: min(52vh, 340px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  background: color-mix(in srgb, var(--bg-elev) 90%, transparent);
  backdrop-filter: blur(20px) saturate(1.5);
  -webkit-backdrop-filter: blur(20px) saturate(1.5);
  border: 1px solid var(--border-strong);
  border-radius: 22px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), var(--shadow-lg);
  animation: rise 0.22s var(--ease-spring) both;
}
.reorder-panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-right: 2px;
}
.reorder-panel-ico {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: color-mix(in srgb, var(--accent) 13%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
  color: var(--accent);
}
.reorder-panel-ico svg {
  width: 17px;
  height: 17px;
  display: block;
}
.reorder-panel-title {
  flex: 1;
  min-width: 0;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.reorder-panel-title strong {
  color: var(--text);
  font-weight: 700;
}
.reorder-panel-esc {
  display: none;
  margin-left: 8px;
  align-items: center;
  gap: 5px;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-faint);
}
.reorder-panel-esc kbd {
  font: inherit;
  font-weight: 700;
  padding: 1px 6px;
  border-radius: 5px;
  border: 1px solid var(--border-strong);
  background: var(--bg-sunken);
  color: var(--text-muted);
}
.reorder-panel-close {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 9px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-faint);
  cursor: pointer;
  transition: background 0.15s var(--ease-out), color 0.15s var(--ease-out),
    border-color 0.15s var(--ease-out);
}
.reorder-panel-close svg {
  width: 14px;
  height: 14px;
  display: block;
}
.reorder-panel-close:hover {
  background: var(--bg-sunken);
  border-color: var(--border);
  color: var(--text);
}
.reorder-panel-close:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 1px;
}
.reorder-chips {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 8px;
  overflow-y: auto;
  max-height: calc(min(52vh, 340px) - 64px);
  padding: 2px;
  overscroll-behavior: contain;
}
.reorder-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 6px 10px 6px 6px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-sunken);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  text-align: left;
  animation: chip-in 0.24s var(--ease-out) backwards;
  transition: border-color 0.15s var(--ease-out), background 0.15s var(--ease-out),
    transform 0.15s var(--ease-out), box-shadow 0.15s var(--ease-out);
}
.reorder-chip-pos {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 13%, transparent);
  color: var(--accent);
  font-weight: 800;
  font-size: 0.82rem;
  transition: background 0.15s var(--ease-out), color 0.15s var(--ease-out);
}
.reorder-chip-occ {
  flex: 1;
  min-width: 0;
  font-size: 0.82rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.reorder-chip-go {
  flex-shrink: 0;
  color: var(--accent);
  opacity: 0;
  transform: translateX(-3px);
  transition: opacity 0.15s var(--ease-out), transform 0.15s var(--ease-out);
}
.reorder-chip-go svg {
  width: 15px;
  height: 15px;
  display: block;
}
.reorder-chip:hover {
  border-color: var(--accent);
  background: var(--bg-elev);
  box-shadow: 0 6px 16px -6px color-mix(in srgb, var(--accent) 35%, transparent);
  transform: translateY(-1px);
}
.reorder-chip:hover .reorder-chip-pos {
  background: var(--accent);
  color: var(--on-accent);
}
.reorder-chip:hover .reorder-chip-go {
  opacity: 1;
  transform: translateX(0);
}
.reorder-chip:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 2px;
}
.reorder-chip:active {
  transform: translateY(0);
}
@keyframes chip-in {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.hint-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-faint);
  margin-bottom: 12px;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-sunken);
}
.hint-line svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
  color: var(--accent);
}
.hint-line.active {
  color: var(--on-accent-soft);
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--border));
}

/* ============ Toast ============ */
.toast-container {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: min(420px, calc(100vw - 32px));
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: 10px;
  background: color-mix(in srgb, var(--bg-elev) 88%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-strong);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), var(--shadow-lg);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 12px 18px;
  border-radius: 14px;
  animation: toast-in 0.3s var(--ease-spring) both;
  pointer-events: auto;
}
.toast.out {
  animation: toast-out 0.25s var(--ease-in) both;
}
.toast svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}
.toast-success {
  border-left-color: var(--success);
  color: var(--success);
}
.toast-error {
  border-left-color: var(--danger);
  color: var(--danger);
}
.toast-warning {
  border-left-color: var(--warning);
  color: var(--warning);
}

/* ============ Spinner ============ */
.spinner {
  width: 18px;
  height: 18px;
  border: 2.5px solid color-mix(in srgb, currentColor 25%, transparent);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  flex-shrink: 0;
}

/* ============ Site footer ============ */
.site-footer {
  margin-top: 48px;
  padding: 26px 20px 40px;
  text-align: center;
  color: var(--text-faint);
  font-size: 0.82rem;
  border-top: 1px solid var(--border);
}
.site-footer strong {
  color: var(--text-muted);
}

/* ============ Animations ============ */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes fade-down {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes pop {
  0% {
    opacity: 0;
    transform: scale(0.6);
  }
  70% {
    transform: scale(1.08);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}
@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}
@keyframes toast-out {
  to {
    opacity: 0;
    transform: translateY(8px) scale(0.97);
  }
}

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

/* ============ Tablet (>= 768px) ============ */
@media (min-width: 768px) {
  .reorder-panel-esc {
    display: inline-flex;
  }
  .container {
    padding: 0 32px;
  }
  .topbar-inner {
    padding: 14px 32px;
  }
  .privacy-pill {
    display: inline-flex;
  }
  .tools-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
    padding: 44px 0 26px;
  }
  .hero {
    padding: 72px 0 34px;
  }
  .step-card {
    padding: 26px;
    margin: 22px 0;
  }
  .thumb-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }
  .level-list {
    grid-template-columns: repeat(3, 1fr);
  }
  .range-input-wrap {
    flex-direction: row;
    align-items: center;
  }
  .range-input {
    flex: 1;
  }
  .actionbar {
    border-radius: var(--radius-lg);
    margin: 28px 0 0;
    padding: 16px 18px;
  }
  .actionbar .btn {
    flex: none;
    min-width: 260px;
  }
  .actionbar-info {
    display: block;
  }
  .file-item {
    padding: 12px 16px;
  }
}

/* ============ Desktop (>= 1100px) ============ */
@media (min-width: 1100px) {
  .tools-grid {
    grid-template-columns: repeat(6, 1fr);
    gap: 18px;
    padding: 60px 0 36px;
  }
  /* asymmetric bento: wide + narrow alternating cards */
  .tool-card:nth-child(1),
  .tool-card:nth-child(4) {
    grid-column: span 4;
  }
  .tool-card:nth-child(2),
  .tool-card:nth-child(3) {
    grid-column: span 2;
  }
  /* wide cards read horizontally: icon left, type right */
  .tool-card:nth-child(1),
  .tool-card:nth-child(4) {
    display: grid;
    grid-template-columns: auto 1fr;
    grid-template-rows: 1fr auto;
    column-gap: 20px;
    align-items: start;
    padding: 24px 26px;
  }
  .tool-card:nth-child(1) .tool-card-icon,
  .tool-card:nth-child(4) .tool-card-icon {
    grid-row: 1 / 3;
    margin-bottom: 0;
    width: 60px;
    height: 60px;
  }
  .tool-card:nth-child(1) .card-arrow,
  .tool-card:nth-child(4) .card-arrow {
    top: auto;
    bottom: 26px;
    right: 26px;
  }
  .hero {
    padding: 96px 0 44px;
  }
  .thumb-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .toast-container {
    right: 32px;
    left: auto;
    bottom: 32px;
    transform: none;
    align-items: flex-end;
  }
}

/* ============ Reduced motion ============ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.01ms !important;
  }
}