style.css

@font-face {
  font-family: 'FKGroteskNeue';
  src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2') format('woff2');
}

/* ============================================================
   ROOT TOKENS (merged from 2 duplicate :root blocks)
   Default: Dark Mode — Catppuccin Mocha with Purple accent
   ============================================================ */
:root {
  /* Catppuccin Mauve — Purple accent */
  --color-mauve: #cba6f7;
  --color-mauve-hover: #d4b3ff;
  --color-mauve-active: #b794e8;
  --color-mauve-rgb: 203, 166, 247;

  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-300: rgb(50, 184, 198);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;
  --color-gray-200-rgb: 245, 245, 245;
  --color-gray-300-rgb: 167, 169, 169;
  --color-gray-400-rgb: 119, 124, 124;

  /* Background color palette (dark defaults; overridden per theme) */
  --color-bg-1: rgba(29, 78, 216, 0.15);
  --color-bg-2: rgba(180, 83, 9, 0.15);
  --color-bg-3: rgba(21, 128, 61, 0.15);
  --color-bg-4: rgba(185, 28, 28, 0.15);
  --color-bg-5: rgba(107, 33, 168, 0.15);
  --color-bg-6: rgba(194, 65, 12, 0.15);
  --color-bg-7: rgba(190, 24, 93, 0.15);
  --color-bg-8: rgba(8, 145, 178, 0.15);

  /* Semantic color tokens — Dark Mode defaults */
  --color-background: #1e1e2e;
  --color-surface: #181825;
  --color-overlay: #313244;
  --color-text: #cdd6f4;
  --color-text-secondary: #bac2de;
  --color-primary: var(--color-mauve);
  --color-primary-hover: var(--color-mauve-hover);
  --color-primary-active: var(--color-mauve-active);
  --color-btn-primary-text: #1e1e2e;
  --color-focus-ring: rgba(var(--color-mauve-rgb), 0.4);
  --color-border: rgba(186, 194, 222, 0.2);
  --color-border-secondary: rgba(186, 194, 222, 0.15);
  --color-secondary: rgba(186, 194, 222, 0.1);
  --color-secondary-hover: rgba(186, 194, 222, 0.15);
  --color-secondary-active: rgba(186, 194, 222, 0.2);
  --color-card-border: rgba(186, 194, 222, 0.15);
  --color-card-border-inner: rgba(186, 194, 222, 0.1);
  --color-success: var(--color-mauve);
  --color-success-rgb: var(--color-mauve-rgb);
  --color-error: #f38ba8;
  --color-error-rgb: 243, 139, 168;
  --color-warning: #fab387;
  --color-warning-rgb: 250, 179, 135;
  --color-info: var(--color-text-secondary);
  --color-info-rgb: 186, 194, 222;
  --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);

  /* Common style patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15);

  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  /* Spacing */
  --space-0: 0;
  --space-1: 1px;
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 15px;
  --radius-full: 100px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.04),
    0 2px 4px -1px rgba(0, 0, 0, 0.02);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04),
    0 4px 6px -2px rgba(0, 0, 0, 0.02);

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* ============================================================
   LIGHT MODE (merged from 2 duplicate [data-color-scheme="light"] blocks)
   Claude.ai inspired — Teal accent
   ============================================================ */
[data-color-scheme="light"] {
  /* Background color palette */
  --color-bg-1: rgba(59, 130, 246, 0.08);
  --color-bg-2: rgba(245, 158, 11, 0.08);
  --color-bg-3: rgba(34, 197, 94, 0.08);
  --color-bg-4: rgba(239, 68, 68, 0.08);
  --color-bg-5: rgba(147, 51, 234, 0.08);
  --color-bg-6: rgba(249, 115, 22, 0.08);
  --color-bg-7: rgba(236, 72, 153, 0.08);
  --color-bg-8: rgba(6, 182, 212, 0.08);

  --color-background: #F0EFEA;
  --color-surface: #FFFFFF;
  --color-overlay: rgba(130, 129, 121, 0.1);
  --color-text: #141413;
  --color-text-secondary: #828179;
  --color-primary: #2d9da6;
  --color-primary-hover: #1d808a;
  --color-primary-active: #1a6b73;
  --color-btn-primary-text: #FFFFFF;
  --color-focus-ring: rgba(45, 157, 166, 0.4);
  --color-border: rgba(130, 129, 121, 0.2);
  --color-border-secondary: rgba(130, 129, 121, 0.15);
  --color-secondary: rgba(130, 129, 121, 0.1);
  --color-secondary-hover: rgba(130, 129, 121, 0.15);
  --color-secondary-active: rgba(130, 129, 121, 0.2);
  --color-card-border: rgba(130, 129, 121, 0.15);
  --color-card-border-inner: rgba(130, 129, 121, 0.1);
  --color-success: #2d9da6;
  --color-success-rgb: 45, 157, 166;
  --color-error: #dc2626;
  --color-error-rgb: 220, 38, 38;
  --color-warning: #ea580c;
  --color-warning-rgb: 234, 88, 12;
  --color-info: var(--color-text-secondary);
  --color-info-rgb: 130, 129, 121;
  --color-select-caret: rgba(19, 52, 59, 0.8);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.15),
    inset 0 -1px 0 rgba(0, 0, 0, 0.03);
}

/* ============================================================
   DARK MODE (merged from 2 duplicate [data-color-scheme="dark"] blocks)
   Catppuccin Mocha with Purple accent
   ============================================================ */
[data-color-scheme="dark"] {
  /* Background color palette */
  --color-bg-1: rgba(29, 78, 216, 0.15);
  --color-bg-2: rgba(180, 83, 9, 0.15);
  --color-bg-3: rgba(21, 128, 61, 0.15);
  --color-bg-4: rgba(185, 28, 28, 0.15);
  --color-bg-5: rgba(107, 33, 168, 0.15);
  --color-bg-6: rgba(194, 65, 12, 0.15);
  --color-bg-7: rgba(190, 24, 93, 0.15);
  --color-bg-8: rgba(8, 145, 178, 0.15);

  --color-background: #1e1e2e;
  --color-surface: #181825;
  --color-overlay: #313244;
  --color-text: #cdd6f4;
  --color-text-secondary: #bac2de;
  --color-primary: var(--color-mauve);
  --color-primary-hover: var(--color-mauve-hover);
  --color-primary-active: var(--color-mauve-active);
  --color-btn-primary-text: #1e1e2e;
  --color-focus-ring: rgba(var(--color-mauve-rgb), 0.4);
  --color-border: rgba(186, 194, 222, 0.2);
  --color-border-secondary: rgba(186, 194, 222, 0.15);
  --color-secondary: rgba(186, 194, 222, 0.1);
  --color-secondary-hover: rgba(186, 194, 222, 0.15);
  --color-secondary-active: rgba(186, 194, 222, 0.2);
  --color-card-border: rgba(186, 194, 222, 0.15);
  --color-card-border-inner: rgba(186, 194, 222, 0.1);
  --color-success: var(--color-mauve);
  --color-success-rgb: var(--color-mauve-rgb);
  --color-error: #f38ba8;
  --color-error-rgb: 243, 139, 168;
  --color-warning: #fab387;
  --color-warning-rgb: 250, 179, 135;
  --color-info: var(--color-text-secondary);
  --color-info-rgb: 186, 194, 222;
  --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1),
    inset 0 -1px 0 rgba(0, 0, 0, 0.15);
}

/* ============================================================
   BASE STYLES
   ============================================================ */
html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

/* merged duplicate body blocks */
body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  background: var(--color-background);
  font-family: var(--font-family-base);
  color: var(--color-text);
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

/* Smooth theme transitions — merged duplicate * blocks; using CSS vars version */
* {
  transition: background-color var(--duration-normal) var(--ease-standard),
              border-color var(--duration-normal) var(--ease-standard),
              color var(--duration-normal) var(--ease-standard);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-md); }

p {
  margin: 0 0 var(--space-16) 0;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

a:hover {
  color: var(--color-primary-hover);
}

code,
pre {
  font-family: var(--font-family-mono);
  font-size: calc(var(--font-size-base) * 0.95);
  background-color: var(--color-secondary);
  border-radius: var(--radius-lg);
}

code {
  padding: var(--space-1) var(--space-4);
}

pre {
  padding: var(--space-16);
  margin: var(--space-16) 0;
  overflow: auto;
  border: 1px solid var(--color-border);
}

pre code {
  background: none;
  padding: 0;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding: var(--space-12) var(--space-20);
  border-radius: var(--radius-full);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
  border: 1px solid transparent;
  text-decoration: none;
  font-family: var(--font-family-base);
  position: relative;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(var(--color-mauve-rgb), 0.3);
}

.btn-primary:active {
  background: var(--color-primary-active);
  border-color: var(--color-primary-active);
  transform: translateY(0);
}

.btn-secondary {
  background: var(--color-secondary);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-secondary-hover);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.btn-secondary:active {
  background: var(--color-secondary-active);
  transform: translateY(0);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-outline:hover {
  background: var(--color-secondary);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.btn-outline:active {
  background: var(--color-secondary-hover);
  transform: translateY(0);
}

/* merged duplicate .btn:disabled and .btn.loading blocks */
.btn:disabled,
.btn.loading {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
  pointer-events: none;
}

.btn.loading {
  position: relative;
}

[data-color-scheme="dark"] .btn--outline {
  border: 1px solid var(--color-border-secondary);
}

/* Loading spinner */
.btn .btn-text {
  transition: opacity var(--duration-fast) var(--ease-standard);
}

.btn .btn-loading {
  display: none;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  align-items: center;
  gap: var(--space-8);
}

.btn.loading .btn-text {
  opacity: 0;
}

.btn.loading .btn-loading {
  display: flex;
}

/* ============================================================
   FORMS — design-system level
   ============================================================ */
.form-control {
  display: block;
  width: 100%;
  padding: var(--space-8) var(--space-12);
  font-size: var(--font-size-md);
  line-height: 1.5;
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  transition: border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard);
}

.form-control:focus {
  border-color: var(--color-primary);
  outline: var(--focus-outline);
}

textarea.form-control {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
}

select.form-control {
  padding: var(--space-8) var(--space-12);
  padding-right: var(--space-32);
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right var(--space-12) center;
  background-size: 16px;
}

@media (prefers-color-scheme: dark) {
  select.form-control {
    background-image: var(--select-caret-dark);
  }
}

[data-color-scheme="dark"] select.form-control {
  background-image: var(--select-caret-dark);
}

[data-color-scheme="light"] select.form-control {
  background-image: var(--select-caret-light);
}

/* merged duplicate .form-label blocks */
.form-label {
  display: block;
  margin-bottom: var(--space-8);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  font-size: var(--font-size-sm);
}

/* merged duplicate .form-group blocks (space-20 wins as it was the later/app value) */
.form-group {
  margin-bottom: var(--space-20);
}

.form-actions {
  display: flex;
  gap: var(--space-12);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background-color: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--duration-normal) var(--ease-standard);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card__body {
  padding: var(--space-16);
}

.card__header,
.card__footer {
  padding: var(--space-16);
  border-bottom: 1px solid var(--color-card-border-inner);
}

/* App glass card */
.glass-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-normal) var(--ease-standard);
  animation: fadeInUp 0.6s var(--ease-standard);
}

/* ============================================================
   STATUS INDICATORS
   ============================================================ */
.status {
  display: inline-flex;
  align-items: center;
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
}

.status--success {
  background-color: rgba(var(--color-success-rgb, 33, 128, 141), var(--status-bg-opacity));
  color: var(--color-success);
  border: 1px solid rgba(var(--color-success-rgb, 33, 128, 141), var(--status-border-opacity));
}

.status--error {
  background-color: rgba(var(--color-error-rgb, 192, 21, 47), var(--status-bg-opacity));
  color: var(--color-error);
  border: 1px solid rgba(var(--color-error-rgb, 192, 21, 47), var(--status-border-opacity));
}

.status--warning {
  background-color: rgba(var(--color-warning-rgb, 168, 75, 47), var(--status-bg-opacity));
  color: var(--color-warning);
  border: 1px solid rgba(var(--color-warning-rgb, 168, 75, 47), var(--status-border-opacity));
}

.status--info {
  background-color: rgba(var(--color-info-rgb, 98, 108, 113), var(--status-bg-opacity));
  color: var(--color-info);
  border: 1px solid rgba(var(--color-info-rgb, 98, 108, 113), var(--status-border-opacity));
}

/* ============================================================
   LAYOUT
   ============================================================ */
/* merged duplicate .container blocks — app uses 800px max-width */
.container {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-16);
}

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: var(--space-16) 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin: 0;
}

.nav {
  display: flex;
  gap: var(--space-8);
}

.main {
  padding: var(--space-24) 0;
}

/* ============================================================
   NAVIGATION BUTTONS (merged 3 duplicate .nav-btn blocks)
   ============================================================ */
.nav-btn {
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.nav-btn:hover {
  background: var(--color-secondary-hover);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

/* ============================================================
   PAGE MANAGEMENT
   ============================================================ */
.page {
  display: none;
}

.page.active {
  display: block;
}

/* ============================================================
   HERO SECTION
   ============================================================ */
.hero-section {
  text-align: center;
  margin-bottom: var(--space-32);
}

.hero-card {
  padding: var(--space-24);
  max-width: 600px;
  margin: 0 auto;
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-16);
  color: var(--color-text);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-24);
  line-height: 1.6;
}

.security-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
}

.security-icon {
  font-size: var(--font-size-md);
}

/* ============================================================
   MODE TABS
   ============================================================ */
.mode-tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-24);
  background: var(--color-secondary);
  padding: var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
}

.tab-btn {
  flex: 1;
  padding: var(--space-10) var(--space-16);
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-standard);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  text-align: center;
}

.tab-btn:hover {
  color: var(--color-text);
  background: var(--color-surface);
  transform: translateY(-1px);
}

.tab-btn.active {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  box-shadow: 0 2px 8px rgba(var(--color-mauve-rgb), 0.3);
}

.mode-content {
  display: none;
  padding: var(--space-24);
}

.mode-content.active {
  display: block;
  animation: slideInRight 0.4s var(--ease-standard);
}

/* ============================================================
   FORM ELEMENTS — app-specific
   ============================================================ */
.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-12) var(--space-16);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  color: var(--color-text);
  font-size: var(--font-size-md);
  transition: all var(--duration-fast) var(--ease-standard);
  font-family: var(--font-family-base);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-secondary);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* Password Input */
.password-input-group {
  position: relative;
  display: flex;
  align-items: center;
}

.password-toggle {
  position: absolute;
  right: var(--space-12);
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  cursor: pointer;
  font-size: var(--font-size-xs);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-standard);
  font-weight: var(--font-weight-medium);
}

.password-toggle:hover {
  color: var(--color-text);
  background: var(--color-secondary-hover);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

/* ============================================================
   VALIDATION & STRENGTH INDICATORS
   ============================================================ */
.url-validation,
.password-strength {
  margin-top: var(--space-8);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.url-validation.valid {
  background: rgba(var(--color-success-rgb), 0.1);
  color: var(--color-success);
  border: 1px solid rgba(var(--color-success-rgb), 0.2);
}

.url-validation.invalid {
  background: rgba(var(--color-error-rgb), 0.1);
  color: var(--color-error);
  border: 1px solid rgba(var(--color-error-rgb), 0.2);
}

.password-strength {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.strength-bar {
  flex: 1;
  height: 4px;
  background: var(--color-secondary);
  border-radius: 2px;
  overflow: hidden;
}

.strength-fill {
  height: 100%;
  transition: all var(--duration-normal) var(--ease-standard);
  border-radius: 2px;
}

.strength-weak .strength-fill  { width: 25%;  background: var(--color-error); }
.strength-fair .strength-fill  { width: 50%;  background: var(--color-warning); }
.strength-good .strength-fill  { width: 75%;  background: var(--color-success); }
.strength-strong .strength-fill { width: 100%; background: var(--color-success); }

.url-count {
  margin-top: var(--space-8);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ============================================================
   TIMELOCK (merged all duplicate blocks)
   ============================================================ */
.timelock-header {
  text-align: center;
  margin-bottom: var(--space-24);
}

.timelock-header h3 {
  color: var(--color-primary);
  margin-bottom: var(--space-8);
}

.timelock-header p {
  color: var(--color-text-secondary);
}

.timelock-options {
  margin: var(--space-24) 0;
}

.timelock-type-tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-20);
  background: var(--color-secondary);
  padding: var(--space-4);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
}

.timelock-tab {
  flex: 1;
  padding: var(--space-8) var(--space-16);
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-standard);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  text-align: center;
}

.timelock-tab:hover {
  color: var(--color-text);
  background: var(--color-surface);
  transform: translateY(-1px);
}

.timelock-tab.active {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  box-shadow: 0 2px 8px rgba(var(--color-mauve-rgb), 0.3);
}

.timelock-option {
  display: none;
}

.timelock-option.active {
  display: block;
  animation: fadeInUp 0.4s var(--ease-standard);
}

.time-window-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}

.timelock-info {
  margin-top: var(--space-8);
  padding: var(--space-8) var(--space-12);
  background: var(--color-secondary);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

/* Timelock Status Page */
.timelock-status {
  text-align: center;
  padding: var(--space-32);
  margin-bottom: var(--space-24);
}

.timelock-status .timelock-header h2 {
  color: var(--color-primary);
  margin-bottom: var(--space-12);
}

.timelock-countdown {
  margin: var(--space-24) 0;
  padding: var(--space-20);
  background: var(--color-secondary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.countdown-timer {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-8);
}

.countdown-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.timelock-actions {
  display: flex;
  gap: var(--space-12);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   CLIPBOARD SECTION (merged 2 duplicate blocks)
   ============================================================ */
.clipboard-section {
  text-align: center;
  padding: var(--space-32);
  margin-bottom: var(--space-24);
}

.clipboard-info h3 {
  margin-bottom: var(--space-8);
  color: var(--color-text);
}

.clipboard-info p {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-16);
}

.clipboard-results {
  margin-top: var(--space-24);
}

/* ============================================================
   DETECTED URLS (merged 3 duplicate blocks)
   ============================================================ */
.detected-urls {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  max-height: 200px;
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  padding: var(--space-12);
  background: var(--color-surface);
}

.detected-url {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  transition: background var(--duration-fast) var(--ease-standard);
}

.detected-url:hover {
  background: var(--color-secondary);
}

.detected-url input[type="checkbox"] {
  margin: 0;
}

.detected-url-text {
  flex: 1;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  cursor: pointer;
  word-break: break-all;
}

/* ============================================================
   RESULTS SECTION (merged 2 duplicate blocks)
   ============================================================ */
.results-section {
  margin-top: var(--space-32);
}

.results-section .glass-card {
  padding: var(--space-24);
  text-align: center;
}

.results-section h3 {
  margin-bottom: var(--space-16);
  color: var(--color-success);
}

.encryption-results {
  margin-bottom: var(--space-24);
}

/* merged 3 duplicate .result-item blocks */
.result-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-12);
  padding: var(--space-16);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-base);
  margin-bottom: var(--space-12);
  animation: fadeInUp 0.5s var(--ease-standard);
}

.result-item .timelock-info {
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  background: var(--color-secondary);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-8);
  border: 1px solid var(--color-border);
}

.result-original {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  word-break: break-all;
}

.result-encrypted {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  flex-wrap: wrap;
  background: var(--color-secondary);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

.result-url {
  flex: 1;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  word-break: break-all;
  min-width: 0;
}

/* merged 2 duplicate .copy-btn blocks */
.copy-btn {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border: none;
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
  white-space: nowrap;
  font-weight: var(--font-weight-medium);
}

.copy-btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(var(--color-mauve-rgb), 0.3);
}

.copy-btn:active {
  background: var(--color-primary-active);
  transform: translateY(0);
}

.copy-btn.copied {
  background: var(--color-success);
  color: var(--color-btn-primary-text);
}

.results-actions {
  display: flex;
  gap: var(--space-12);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   DECRYPTION SECTION (merged 2 duplicate blocks)
   ============================================================ */
.decryption-section {
  max-width: 500px;
  margin: 0 auto;
}

.decryption-section .glass-card {
  padding: var(--space-32);
  text-align: center;
  margin-bottom: var(--space-24);
}

.decryption-header {
  text-align: center;
  margin-bottom: var(--space-24);
}

.decryption-header h2 {
  margin-bottom: var(--space-8);
  color: var(--color-text);
}

.decryption-header p {
  color: var(--color-text-secondary);
}

.decryption-attempts {
  margin-top: var(--space-12);
  text-align: center;
  color: var(--color-error);
  font-size: var(--font-size-sm);
}

/* ============================================================
   SUCCESS / ERROR SECTIONS (merged duplicate blocks)
   ============================================================ */
.error-options,
.success-section {
  margin-top: var(--space-24);
  text-align: center;
  padding: var(--space-24);
}

.error-header,
.success-header {
  margin-bottom: var(--space-20);
}

.error-header h3,
.success-header h3 {
  margin-bottom: var(--space-8);
}

.error-header h3 {
  color: var(--color-error);
}

.success-header h3 {
  color: var(--color-success);
}

.error-header p {
  color: var(--color-text-secondary);
}

.decrypted-url {
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  padding: var(--space-12);
  border-radius: var(--radius-base);
  margin-bottom: var(--space-16);
  word-break: break-all;
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  color: var(--color-success);
}

.redirect-countdown {
  margin-bottom: var(--space-16);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.error-actions,
.success-actions {
  display: flex;
  gap: var(--space-12);
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   MODAL (merged 3 duplicate .modal-content blocks + all related)
   ============================================================ */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2000;
  display: none;
}

.modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-16);
}

.modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  position: relative;
  width: 90%;
  max-width: 500px;
  max-height: 80vh;
  overflow-y: auto;
  padding: var(--space-24);
  z-index: 1;
  border-radius: var(--radius-lg);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-20);
  padding-bottom: var(--space-16);
  border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
  margin: 0;
  color: var(--color-text);
}

.modal-close {
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-secondary);
  cursor: pointer;
  padding: var(--space-6);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-standard);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: var(--color-secondary-hover);
  color: var(--color-text);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.modal-body {
  color: var(--color-text);
}

.modal-body p {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Scrollbar styling */
.modal-content::-webkit-scrollbar { width: 6px; }
.modal-content::-webkit-scrollbar-track { background: var(--color-secondary); border-radius: 3px; }
.modal-content::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: 3px; }
.modal-content::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

/* ============================================================
   SETTINGS / HELP (merged 2 duplicate blocks each)
   ============================================================ */
.settings-group {
  margin-bottom: var(--space-16);
}

.settings-label {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  font-size: var(--font-size-sm);
  color: var(--color-text);
  cursor: pointer;
}

.settings-label input[type="checkbox"] {
  margin: 0;
}

.help-section {
  margin-bottom: var(--space-20);
}

.help-section h4 {
  margin-bottom: var(--space-8);
  color: var(--color-text);
}

.help-section p {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ============================================================
   TOAST NOTIFICATIONS (merged 2 duplicate .toast blocks)
   ============================================================ */
.toast {
  position: fixed;
  bottom: var(--space-20);
  right: var(--space-20);
  padding: var(--space-12) var(--space-16);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  z-index: 3000;
  transform: translateX(100%);
  transition: transform var(--duration-normal) var(--ease-standard);
  max-width: 300px;
  word-wrap: break-word;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.toast.show {
  transform: translateX(0);
}

.toast.success {
  background: var(--color-success);
  color: var(--color-btn-primary-text);
  border-color: transparent;
}

.toast.error {
  background: var(--color-error);
  color: var(--color-btn-primary-text);
  border-color: transparent;
}

.toast.warning {
  background: var(--color-warning);
  color: var(--color-btn-primary-text);
  border-color: transparent;
}

.toast.info {
  background: var(--color-info);
  color: var(--color-btn-primary-text);
  border-color: transparent;
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-4 { gap: var(--space-4); }
.gap-8 { gap: var(--space-8); }
.gap-16 { gap: var(--space-16); }
.m-0 { margin: 0; }
.mt-8 { margin-top: var(--space-8); }
.mb-8 { margin-bottom: var(--space-8); }
.mx-8 { margin-left: var(--space-8); margin-right: var(--space-8); }
.my-8 { margin-top: var(--space-8); margin-bottom: var(--space-8); }
.p-0 { padding: 0; }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.px-8 { padding-left: var(--space-8); padding-right: var(--space-8); }
.py-16 { padding-top: var(--space-16); padding-bottom: var(--space-16); }
.px-16 { padding-left: var(--space-16); padding-right: var(--space-16); }
.block { display: block; }
.hidden { display: none; }

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

:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

.btn:focus-visible,
.form-input:focus-visible,
.form-textarea:focus-visible,
.nav-btn:focus-visible,
.tab-btn:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ============================================================
   ANIMATIONS & KEYFRAMES
   ============================================================ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.5; }
}

@keyframes spin {
  0%   { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loading-pulse {
  animation: pulse 1.5s ease-in-out infinite;
}

/* ============================================================
   MEDIA QUERIES (all consolidated)
   ============================================================ */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-12);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-md);
  }

  .hero-card {
    padding: var(--space-16);
  }

  .mode-tabs {
    flex-direction: column;
    gap: var(--space-2);
    border-radius: var(--radius-lg);
  }

  .tab-btn {
    padding: var(--space-12) var(--space-16);
  }

  .mode-content {
    padding: var(--space-16);
  }

  .form-actions {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .time-window-group {
    grid-template-columns: 1fr;
  }

  .timelock-type-tabs {
    flex-direction: column;
    border-radius: var(--radius-lg);
  }

  .timelock-actions,
  .results-actions,
  .error-actions,
  .success-actions {
    flex-direction: column;
  }

  .result-encrypted {
    flex-direction: column;
    align-items: stretch;
  }

  .copy-btn {
    align-self: center;
    width: auto;
  }

  .modal-content {
    width: 95%;
    padding: var(--space-16);
    margin: var(--space-16);
  }

  .toast {
    right: var(--space-12);
    left: var(--space-12);
    max-width: none;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .mode-content {
    padding: var(--space-12);
  }

  .form-input,
  .form-textarea {
    padding: var(--space-10) var(--space-12);
  }

  .btn {
    padding: var(--space-10) var(--space-16);
  }
}

@media (prefers-contrast: high) {
  .glass-card { border-width: 2px; }
  .btn { border-width: 2px; }
  .form-input,
  .form-textarea { border-width: 2px; }
}

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