/* ==========================================================================
   Simple Web Tools — Global Design System
   --------------------------------------------------------------------------
   Sections:
     1.  Design tokens (CSS variables) — light + dark themes
     2.  Reset & base
     3.  Typography & utilities
     4.  Layout helpers (container, grid, sections)
     5.  Glassmorphism + cards
     6.  Buttons
     7.  Forms / inputs
     8.  Navbar + hamburger menu
     9.  Footer
     10. Landing / hero
     11. Dashboard category cards
     12. Tool UI (panels, results, tables)
     13. Spinners, toasts, badges
     14. Decorative background blobs
     15. Animations
     16. Accessibility & responsive
   ========================================================================== */

/* ----------------------------------------------------------------------------
   1. Design tokens
   ---------------------------------------------------------------------------- */
:root {
  /* Brand palette */
  --brand-50: #f5f3ff;
  --brand-100: #ede9fe;
  --brand-300: #c4b5fd;
  --brand-500: #8b5cf6;
  --brand-600: #7c3aed;
  --brand-700: #6d28d9;
  --accent-500: #06b6d4;
  --accent-600: #0891b2;

  /* Status */
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --info: #2563eb;

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur-fast: 140ms;
  --dur: 240ms;
  --dur-slow: 420ms;

  /* Layout */
  --container: 1180px;
  --nav-h: 64px;
}

/* Light theme (default) */
:root,
[data-theme='light'] {
  color-scheme: light;
  --bg: #f6f7fb;
  --bg-elev: #ffffff;
  --text: #0f172a;
  --text-soft: #475569;
  --text-muted: #64748b;
  --border: rgba(15, 23, 42, 0.1);
  --ring: rgba(124, 58, 237, 0.45);

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.55);
  --glass-border: rgba(255, 255, 255, 0.65);
  --glass-blur: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 6px 16px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 18px 40px rgba(15, 23, 42, 0.14), 0 6px 14px rgba(15, 23, 42, 0.08);

  --gradient: linear-gradient(135deg, var(--brand-600), var(--accent-500));
}

/* Dark theme */
[data-theme='dark'] {
  color-scheme: dark;
  --bg: #0b1020;
  --bg-elev: #131a2e;
  --text: #e7ecf5;
  --text-soft: #b6c0d4;
  --text-muted: #8a97b1;
  --border: rgba(255, 255, 255, 0.1);
  --ring: rgba(139, 92, 246, 0.55);

  --glass-bg: rgba(19, 26, 46, 0.55);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: 18px;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 22px 48px rgba(0, 0, 0, 0.55);

  --gradient: linear-gradient(135deg, var(--brand-500), var(--accent-500));
}

/* ----------------------------------------------------------------------------
   2. Reset & base
   ---------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  max-width: 100%;
  overflow-x: hidden;
}

body {
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: clamp(0.95rem, 0.9rem + 0.3vw, 1.05rem);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  overflow-x: hidden;
}

body > * {
  min-width: 0;
}

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

a {
  color: var(--brand-600);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

button,
input,
select,
textarea {
  max-width: 100%;
  font: inherit;
  color: inherit;
}

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

/* ----------------------------------------------------------------------------
   3. Typography & utilities
   ---------------------------------------------------------------------------- */
h1,
h2,
h3,
h4 {
  line-height: 1.2;
  font-weight: 700;
  color: var(--text);
}

h1 {
  font-size: clamp(1.9rem, 1.4rem + 2.4vw, 3.2rem);
  font-weight: 800;
}
h2 {
  font-size: clamp(1.4rem, 1.1rem + 1.2vw, 2rem);
}
h3 {
  font-size: clamp(1.15rem, 1rem + 0.6vw, 1.4rem);
}

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

.text-soft {
  color: var(--text-soft);
}
.text-muted {
  color: var(--text-muted);
}

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

.skip-link {
  position: absolute;
  left: var(--space-3);
  top: -60px;
  z-index: 1000;
  padding: var(--space-2) var(--space-4);
  background: var(--brand-600);
  color: #fff;
  border-radius: var(--radius-sm);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus {
  top: var(--space-3);
  text-decoration: none;
}

/* ----------------------------------------------------------------------------
   4. Layout helpers
   ---------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container);
  min-width: 0;
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.section {
  padding-block: var(--space-7);
}

.page {
  min-height: calc(100vh - var(--nav-h));
  min-height: calc(100dvh - var(--nav-h));
  padding-top: var(--space-6);
  padding-bottom: var(--space-8);
}

.grid {
  display: grid;
  min-width: 0;
  gap: var(--space-5);
}

.stack {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: var(--space-4);
}

.page-head {
  margin-bottom: var(--space-6);
}
.page-head p {
  color: var(--text-soft);
  margin-top: var(--space-2);
}

/* ----------------------------------------------------------------------------
   5. Glassmorphism + cards
   ---------------------------------------------------------------------------- */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-lg);
}

.glass-soft {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(calc(var(--glass-blur) - 4px));
  backdrop-filter: blur(calc(var(--glass-blur) - 4px));
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-md);
}

.card {
  min-width: 0;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-5);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* ----------------------------------------------------------------------------
   6. Buttons
   ---------------------------------------------------------------------------- */
.btn {
  --btn-bg: var(--bg-elev);
  --btn-fg: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.7rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  max-width: 100%;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur) var(--ease),
    background var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn:active {
  transform: translateY(0);
}
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  --btn-bg: var(--gradient);
  --btn-fg: #fff;
  border-color: transparent;
}

.btn-accent {
  --btn-bg: linear-gradient(135deg, var(--accent-600), var(--accent-500));
  --btn-fg: #fff;
  border-color: transparent;
}

.btn-ghost {
  --btn-bg: transparent;
  border-color: var(--border);
}

.btn-danger {
  --btn-bg: var(--danger);
  --btn-fg: #fff;
  border-color: transparent;
}

.btn-sm {
  padding: 0.45rem 0.85rem;
  font-size: 0.9rem;
}
.btn-block {
  width: 100%;
}

/* Inline button spinner (hidden until .is-loading) */
.btn-spinner {
  width: 1.05em;
  height: 1.05em;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-top-color: #fff;
  display: none;
  animation: spin 0.7s linear infinite;
}
.btn.is-loading .btn-spinner {
  display: inline-block;
}
.btn.is-loading .btn-label {
  opacity: 0.75;
}

/* ----------------------------------------------------------------------------
   7. Forms / inputs
   ---------------------------------------------------------------------------- */
.field {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: var(--space-2);
}

label,
.field-label {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-soft);
}

.input,
.login-input,
select.input,
textarea.input {
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.input:focus,
.login-input:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px var(--ring);
}

textarea.input {
  resize: vertical;
  min-height: 96px;
}

.field-error {
  min-height: 1.2em;
  color: var(--danger);
  font-size: 0.875rem;
  font-weight: 500;
}

.field-row {
  display: grid;
  min-width: 0;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

/* ----------------------------------------------------------------------------
   8. Navbar + hamburger menu
   ---------------------------------------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  max-width: 100%;
  align-items: center;
  gap: var(--space-4);
  padding-inline: var(--space-4);
  background: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(var(--glass-blur)) saturate(140%);
  backdrop-filter: blur(var(--glass-blur)) saturate(140%);
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-2);
  font-weight: 800;
  color: var(--text);
}
.brand:hover {
  text-decoration: none;
}
.brand-mark {
  font-size: 1.35rem;
}
.brand-text {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nav-spacer {
  min-width: 0;
  flex: 1;
}

.nav-links {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  padding: 0;
}
.nav-links a {
  display: inline-block;
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius-pill);
  color: var(--text-soft);
  font-weight: 600;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-links a:hover,
.nav-links a[aria-current='page'] {
  background: var(--brand-100);
  color: var(--brand-700);
  text-decoration: none;
}
[data-theme='dark'] .nav-links a:hover,
[data-theme='dark'] .nav-links a[aria-current='page'] {
  background: rgba(139, 92, 246, 0.18);
  color: var(--brand-300);
}

.nav-user {
  font-weight: 600;
  color: var(--text-soft);
  padding-inline: var(--space-2);
  white-space: nowrap;
}

/* Theme toggle */
.theme-toggle {
  position: relative;
  width: 46px;
  height: 30px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 6px;
  box-shadow: var(--shadow-sm);
}
.theme-icon {
  font-size: 0.8rem;
  line-height: 1;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}
[data-theme='light'] .theme-icon--moon {
  opacity: 0.35;
}
[data-theme='dark'] .theme-icon--sun {
  opacity: 0.35;
}

/* Hamburger button (hidden on desktop) */
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-elev);
  cursor: pointer;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: '';
  position: absolute;
  left: 50%;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transform: translateX(-50%);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease), top var(--dur) var(--ease);
}
.nav-toggle span {
  top: 50%;
  transform: translate(-50%, -50%);
}
.nav-toggle span::before {
  top: -7px;
}
.nav-toggle span::after {
  top: 7px;
}
/* Animated X when menu open */
.nav-toggle[aria-expanded='true'] span {
  background: transparent;
}
.nav-toggle[aria-expanded='true'] span::before {
  top: 0;
  transform: translateX(-50%) rotate(45deg);
}
.nav-toggle[aria-expanded='true'] span::after {
  top: 0;
  transform: translateX(-50%) rotate(-45deg);
}

/* Mobile menu backdrop */
.nav-backdrop {
  display: none;
  position: fixed;
  inset: var(--nav-h) 0 0 0;
  background: rgba(2, 6, 23, 0.5);
  z-index: 90;
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}
.nav-backdrop.is-open {
  display: block;
  opacity: 1;
}

/* ----------------------------------------------------------------------------
   9. Footer
   ---------------------------------------------------------------------------- */
.site-footer,
.landing-footer {
  border-top: 1px solid var(--border);
  padding-block: var(--space-5);
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}
.site-footer a {
  color: var(--text-soft);
}

/* ----------------------------------------------------------------------------
   10. Landing / hero
   ---------------------------------------------------------------------------- */
.landing-body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

.landing-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
}

.landing-main {
  flex: 1;
  display: grid;
  place-items: center;
  padding: var(--space-5);
}

.hero {
  width: 100%;
  max-width: var(--container);
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-6);
  align-items: center;
  padding: clamp(var(--space-5), 4vw, var(--space-7));
  animation: rise var(--dur-slow) var(--ease) both;
}

.hero-eyebrow {
  display: inline-block;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.8rem;
  color: var(--brand-600);
  margin-bottom: var(--space-3);
}
.hero-title {
  margin-bottom: var(--space-4);
}
.hero-subtitle {
  color: var(--text-soft);
  max-width: 46ch;
  margin-bottom: var(--space-5);
}

.login-form {
  margin-bottom: var(--space-5);
}
.login-label {
  display: block;
  margin-bottom: var(--space-2);
}
.login-row {
  display: flex;
  gap: var(--space-3);
}
.login-row .login-input {
  flex: 1;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
}
.badge {
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-pill);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-soft);
  box-shadow: var(--shadow-sm);
}

.hero-visual {
  padding: var(--space-5);
  animation: floatY 6s var(--ease) infinite alternate;
}
.preview-card {
  border-radius: var(--radius-md);
}
.preview-dot-row {
  display: flex;
  gap: 6px;
  margin-bottom: var(--space-4);
}
.preview-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}
.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}
.preview-tile {
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  font-size: 1.6rem;
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}

/* ----------------------------------------------------------------------------
   11. Dashboard category cards
   ---------------------------------------------------------------------------- */
.welcome-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-5);
}

.category-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.category-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
  z-index: 0;
}
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}
.category-card > * {
  position: relative;
  z-index: 1;
}
.category-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  font-size: 1.8rem;
  border-radius: var(--radius-md);
  background: var(--brand-100);
}
[data-theme='dark'] .category-icon {
  background: rgba(139, 92, 246, 0.18);
}
.category-title {
  color: var(--text);
}
.category-desc {
  color: var(--text-soft);
  font-size: 0.92rem;
}
.category-arrow {
  margin-top: auto;
  font-weight: 700;
  color: var(--brand-600);
}

/* ----------------------------------------------------------------------------
   12. Tool UI (panels, results, tables)
   ---------------------------------------------------------------------------- */
.tools-grid {
  display: grid;
  min-width: 0;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-5);
  align-items: start;
}

.tool {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: var(--space-4);
}
.tool-header {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: var(--space-3);
}
.tool-icon {
  font-size: 1.4rem;
}
.tool-actions {
  display: flex;
  min-width: 0;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.result {
  min-width: 0;
  margin-top: var(--space-2);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
}
.result.is-empty {
  display: none;
}
.result-row {
  display: flex;
  min-width: 0;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-2);
  border-bottom: 1px dashed var(--border);
}
.result-row:last-child {
  border-bottom: 0;
}
.result-key {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--text-soft);
}
.result-val {
  min-width: 0;
  overflow-wrap: anywhere;
  font-weight: 700;
}
.result-val.good {
  color: var(--success);
}
.result-val.bad {
  color: var(--danger);
}

.data-table {
  width: 100%;
  min-width: 0;
  table-layout: fixed;
  border-collapse: collapse;
}
.data-table th,
.data-table td {
  padding: var(--space-2) var(--space-3);
  text-align: left;
  overflow-wrap: anywhere;
  border-bottom: 1px solid var(--border);
}
.data-table th {
  color: var(--text-soft);
  font-size: 0.85rem;
}

.dynamic-row {
  display: grid;
  min-width: 0;
  gap: var(--space-3);
  align-items: end;
}

/* ----------------------------------------------------------------------------
   13. Spinners, toasts, badges
   ---------------------------------------------------------------------------- */
.spinner {
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  border: 3px solid var(--border);
  border-top-color: var(--brand-600);
  animation: spin 0.7s linear infinite;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  border-radius: inherit;
  z-index: 5;
}
.loading-overlay.is-active {
  display: grid;
}

.toast-stack {
  position: fixed;
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: min(360px, calc(100vw - 2 * var(--space-4)));
}
.toast {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  animation: rise var(--dur) var(--ease) both;
}
.toast--success {
  border-left: 4px solid var(--success);
}
.toast--error {
  border-left: 4px solid var(--danger);
}
.toast--info {
  border-left: 4px solid var(--info);
}

/* ----------------------------------------------------------------------------
   14. Decorative background blobs
   ---------------------------------------------------------------------------- */
.bg-decor {
  position: fixed;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.blob {
  position: absolute;
  width: 42vmax;
  height: 42vmax;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.5;
  animation: floatBlob 18s var(--ease) infinite alternate;
}
.blob-1 {
  background: var(--brand-500);
  top: -10vmax;
  left: -8vmax;
}
.blob-2 {
  background: var(--accent-500);
  bottom: -12vmax;
  right: -6vmax;
  animation-delay: -6s;
}
.blob-3 {
  background: var(--brand-300);
  top: 30%;
  right: 20%;
  opacity: 0.3;
  animation-delay: -12s;
}

/* ----------------------------------------------------------------------------
   15. Animations
   ---------------------------------------------------------------------------- */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes floatY {
  from {
    transform: translateY(-6px);
  }
  to {
    transform: translateY(8px);
  }
}
@keyframes floatBlob {
  from {
    transform: translate(0, 0) scale(1);
  }
  to {
    transform: translate(4vmax, 3vmax) scale(1.08);
  }
}

.animate-in {
  animation: rise var(--dur-slow) var(--ease) both;
}

/* ----------------------------------------------------------------------------
   16. Accessibility & responsive
   ---------------------------------------------------------------------------- */
.noscript-banner {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: 2000;
  padding: var(--space-3) var(--space-4);
  text-align: center;
  background: var(--danger);
  color: #fff;
  font-weight: 600;
}

/* Tablet */
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-subtitle {
    margin-inline: auto;
  }
  .hero-badges {
    justify-content: center;
  }
  .hero-visual {
    display: none;
  }
  .field-row {
    grid-template-columns: 1fr;
  }
}

/* Mobile: collapse nav into hamburger menu */
@media (max-width: 720px) {
  html,
  body {
    max-width: 100vw;
    overflow-x: hidden;
  }
  .navbar {
    gap: var(--space-2);
    padding-inline: var(--space-3);
  }
  .theme-toggle {
    width: 42px;
  }
  .nav-toggle {
    width: 40px;
    height: 40px;
  }
  .nav-toggle {
    display: block;
  }
  .tools-grid {
    grid-template-columns: 1fr;
  }
  .page .grid[style*='grid-template-columns'] {
    grid-template-columns: 1fr !important;
  }
  .nav-links {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: auto;
    z-index: 95;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-1);
    width: min(80vw, 320px);
    height: calc(100vh - var(--nav-h));
    height: calc(100dvh - var(--nav-h));
    padding: var(--space-4);
    background: var(--bg-elev);
    border-right: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    transition: transform var(--dur) var(--ease);
    overflow-y: auto;
    overflow-x: hidden;
  }
  .nav-links.is-open {
    transform: translateX(0);
  }
  .nav-links a {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    white-space: normal;
    overflow-wrap: anywhere;
  }
  .nav-user {
    order: -1;
    padding: var(--space-3) var(--space-4);
    white-space: normal;
    overflow-wrap: anywhere;
  }
  .login-row {
    flex-direction: column;
  }
  .toast-stack {
    right: var(--space-3);
    left: var(--space-3);
    max-width: none;
  }
}

/* Small phones */
@media (max-width: 420px) {
  .container {
    padding-inline: var(--space-3);
  }
  .page {
    padding-top: var(--space-5);
    padding-bottom: var(--space-6);
  }
  .card {
    padding: var(--space-4);
  }
  .landing-header {
    padding-inline: var(--space-3);
  }
  .landing-main {
    padding-inline: var(--space-3);
  }
  .hero {
    padding: var(--space-4);
  }
  .brand-text {
    font-size: 0.95rem;
  }
  .category-grid {
    grid-template-columns: 1fr;
  }
  .tool-actions .btn,
  .tool-actions a.btn {
    width: 100%;
    min-width: 0;
    white-space: normal;
  }
  .result-row {
    flex-direction: column;
    gap: var(--space-1);
  }
  .result-val {
    overflow-wrap: anywhere;
  }
  input[type='file'].input {
    font-size: 0.9rem;
  }
}

@media (max-width: 360px) {
  .brand-mark {
    font-size: 1.15rem;
  }
  .brand-text {
    font-size: 0.86rem;
  }
  .btn {
    padding-inline: 1rem;
  }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* High-contrast / forced colors */
@media (forced-colors: active) {
  .glass,
  .glass-soft,
  .card,
  .category-card {
    border: 1px solid CanvasText;
  }
}