/* Mastercard-inspired — warm cream canvas, ink pills, oversized radii, no gradients */
:root {
  color-scheme: light dark;

  /* Surfaces & backgrounds */
  --color-canvas: #F3F0EE;          /* Canvas Cream — the default body background */
  --color-lifted: #FCFBFA;          /* Lifted Cream — paper-on-paper */
  --color-white: #FFFFFF;           /* nav pill, secondary buttons, modals */
  --color-bone: #F4F4F4;            /* cool-gray alt surface */

  /* Text & neutrals */
  --color-ink: #141413;             /* warm near-black */
  --color-charcoal: #262627;
  --color-slate: #696969;           /* muted secondary */
  --color-granite: #555555;
  --color-taupe: #D1CDC7;           /* whisper / disabled */

  /* Accents */
  --color-signal: #CF4500;          /* Signal Orange — eyebrow dots, attention only */
  --color-signal-light: #F37338;    /* Light Signal Orange — indicators/arcs */
  --color-clay: #9A3A0A;            /* secondary link-style buttons */
  --color-link: #3860BE;            /* Link Blue */
  --color-link-deep: #2F4FA0;
  --color-error: #EB001B;           /* brand red — signals only, never chrome */

  /* Back-compat aliases */
  --bg-primary: #F3F0EE;
  --bg-secondary: #FCFBFA;
  --bg-tertiary: #FFFFFF;
  --bg-input: #FFFFFF;
  --bg-hover: #F3F0EE;

  --text-primary: #141413;
  --text-secondary: #555555;
  --text-muted: #696969;
  --text-faint: #D1CDC7;

  --accent-primary: #141413;
  --accent-secondary: #555555;
  --accent-danger: #CF4500;
  --accent-success: #3860BE;
  --accent-link: #3860BE;
  --accent-link-deep: #2F4FA0;

  --border-primary: rgba(20, 20, 19, 0.10);
  --border-secondary: rgba(20, 20, 19, 0.16);
  --border-strong: rgba(20, 20, 19, 0.35);

  --on-primary: #F3F0EE;             /* cream text on ink fill */
  --primary-hover: #262627;
  --primary-active: #343433;

  /* Theme-aware tokens */
  --selection-bg: #141413;
  --selection-fg: #F3F0EE;
  --focus-ring: rgba(56, 96, 190, 0.18);
  --header-border: rgba(20, 20, 19, 0.06);
  --input-border: rgba(20, 20, 19, 0.5);
  --input-border-hover: rgba(20, 20, 19, 0.75);
  --color-footer: #141413;
  --color-footer-text: #F3F0EE;
  --status-success-border: rgba(56, 96, 190, 0.5);
  --status-error-border: rgba(235, 0, 27, 0.5);

  /* Shadows — atmospheric cushioning, never hard drops */
  --shadow-sm: none;
  --shadow-md: 0px 4px 24px 0px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0px 24px 48px 0px rgba(0, 0, 0, 0.08);

  /* Spacing — 8px base unit */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Border radius — small (6), 20 (buttons), 40 (frames/panels), or full pill */
  --radius-sm: 6px;
  --radius-md: 20px;
  --radius-lg: 40px;
  --radius-pill: 999px;
  --radius-full: 9999px;

  /* Typography — one-family system */
  --font-family: 'MarkForMC', 'Sofia Sans', Inter, Arial, sans-serif;
  --font-mono: var(--font-family);
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

/* Mastercard-inspired dark — warm black canvas, cream ink */
@media (prefers-color-scheme: dark) {
  :root {
    --color-canvas: #141413;          /* warm black canvas */
    --color-lifted: #1E1E1C;
    --color-white: #1E1E1C;           /* raised surfaces */
    --color-bone: #2A2A28;

    --color-ink: #F3F0EE;             /* cream ink */
    --color-charcoal: #E0DDD7;
    --color-slate: #A8A39B;
    --color-granite: #B5B0A8;
    --color-taupe: #63605B;

    --color-signal: #F37338;
    --color-signal-light: #F58A5C;
    --color-clay: #C0501E;
    --color-link: #7B9CF2;
    --color-link-deep: #9DB8F5;
    --color-error: #FF5A5F;

    --bg-primary: #141413;
    --bg-secondary: #1E1E1C;
    --bg-tertiary: #1E1E1C;
    --bg-input: #1E1E1C;
    --bg-hover: #262624;

    --text-primary: #F3F0EE;
    --text-secondary: #B5B0A8;
    --text-muted: #A8A39B;
    --text-faint: #63605B;

    --accent-primary: #F3F0EE;
    --accent-secondary: #B5B0A8;
    --accent-danger: #FF5A5F;
    --accent-success: #7B9CF2;
    --accent-link: #7B9CF2;
    --accent-link-deep: #9DB8F5;

    --border-primary: rgba(243, 240, 238, 0.10);
    --border-secondary: rgba(243, 240, 238, 0.16);
    --border-strong: rgba(243, 240, 238, 0.32);

    --on-primary: #141413;            /* ink text on cream fill */
    --primary-hover: #E3E0DA;
    --primary-active: #D3D0CA;

    --selection-bg: #F3F0EE;
    --selection-fg: #141413;
    --focus-ring: rgba(123, 156, 242, 0.25);
    --header-border: rgba(243, 240, 238, 0.08);
    --input-border: rgba(243, 240, 238, 0.45);
    --input-border-hover: rgba(243, 240, 238, 0.7);
    --color-footer: #000000;
    --color-footer-text: #F3F0EE;
    --status-success-border: rgba(123, 156, 242, 0.5);
    --status-error-border: rgba(255, 90, 95, 0.55);

    --shadow-sm: none;
    --shadow-md: 0px 4px 24px 0px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0px 24px 48px 0px rgba(0, 0, 0, 0.55);
  }
}

/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-color: inherit;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-canvas);
  color: var(--color-ink);
  line-height: 1.4;
  font-size: var(--font-size-base);
  font-weight: 450;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  width: 100%;
  min-width: 0;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--selection-bg);
  color: var(--selection-fg);
}

/* Typography */
h1, h2, h3 {
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--font-size-xl);
}

h3 {
  font-size: var(--font-size-base);
}

/* Eyebrow labels — uppercase 700 +4% tracking with an accent dot */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-slate);
}

.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-signal);
}

/* Header — floating white nav pill */
.header {
  position: sticky;
  top: var(--spacing-sm);
  z-index: 100;
  padding: var(--spacing-sm) var(--spacing-md) 0;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  background: var(--color-white);
  border: 1px solid var(--header-border);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-md) var(--spacing-lg);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--text-primary);
  font-size: var(--font-size-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 28px;
  height: 28px;
  color: var(--color-ink);
}

.brand-subtitle {
  color: var(--color-slate);
  font-size: var(--font-size-sm);
  font-weight: 450;
}

/* Main content */
.main {
  min-height: calc(100vh - 200px);
  overflow-x: hidden;
  width: 100%;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-3xl);
  width: 100%;
  box-sizing: border-box;
}

/* Panels — lifted cream with 40px corners */
.panel {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

/* The focal "hero" panel — white, floating on a soft halo */
.panel--primary {
  background: var(--color-white);
  box-shadow: var(--shadow-lg);
}

/* Archive a URL section */
.archive-section {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

/* Snapshots and Help sections */
.snapshots-section,
.help-section {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.panel-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.panel-icon {
  width: 18px;
  height: 18px;
  color: var(--accent-secondary);
}

/* Forms */
.archive-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-label {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-slate);
}

.form-label::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-signal);
}

.input-group {
  display: flex;
  gap: var(--spacing-sm);
  align-items: stretch;
}

/* Search-style pill input */
.form-input {
  flex: 1;
  min-width: 0;
  padding: 12px 24px;
  border: 1px solid var(--input-border);
  border-radius: var(--radius-pill);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-family: inherit;
  font-weight: 450;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-input:hover {
  border-color: var(--input-border-hover);
}

.form-input:focus {
  border-color: var(--color-ink);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

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

/* Buttons — ink pills at 20px radius */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 6px 24px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: var(--font-size-base);
  font-weight: 500;
  font-family: inherit;
  letter-spacing: -0.02em;
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.btn:active {
  transform: translateY(2px);
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--focus-ring);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  color: var(--color-taupe);
  border-color: var(--color-taupe);
  transform: none;
}

.btn--primary {
  background: var(--accent-primary);
  color: var(--on-primary);
  border: 1.5px solid var(--accent-primary);
}

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

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

.btn--secondary {
  background: var(--color-white);
  border: 1.5px solid var(--color-ink);
}

.btn--secondary:hover {
  background: var(--color-canvas);
}

.btn:disabled.btn--primary {
  background: var(--color-taupe);
  border-color: var(--color-taupe);
  color: var(--color-white);
}

.btn-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

/* Status — pill chip */
.status {
  display: grid;
  grid-template-rows: 0fr;
  border-radius: var(--radius-pill);
  font-size: var(--font-size-sm);
  font-weight: 450;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  margin-top: 0;
  padding: 0;
  opacity: 0;
  transition:
    grid-template-rows var(--transition-normal),
    padding var(--transition-normal),
    margin-top var(--transition-normal),
    border-color var(--transition-normal),
    background-color var(--transition-normal),
    opacity var(--transition-normal);
  visibility: hidden;
  pointer-events: none;
}

.status > * {
  min-height: 0;
  overflow: hidden;
}

.status:not(:empty) {
  grid-template-rows: 1fr;
  margin-top: var(--spacing-lg);
  padding: 10px 24px;
  border-color: var(--border-primary);
  background: var(--color-white);
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.status.error {
  border-color: var(--status-error-border);
  color: var(--text-primary);
}

.status.success {
  border-color: var(--status-success-border);
  color: var(--text-primary);
}

/* Grid layout */
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  align-items: start;
}

/* Snapshots */
.snapshots-list {
  max-height: 400px;
  overflow-y: auto;
  margin: calc(var(--spacing-md) * -1);
  padding: var(--spacing-xs);
}

.snapshot-item {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-primary);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.snapshot-item:last-child {
  border-bottom: none;
}

.snapshot-item:hover {
  background: var(--color-canvas);
}

.snapshot-link {
  display: block;
  color: var(--accent-link);
  text-decoration: none;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  transition: color var(--transition-fast);
  font-variant-numeric: tabular-nums;
}

.snapshot-link:hover {
  color: var(--accent-link-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.snapshot-meta {
  font-size: var(--font-size-sm);
  font-weight: 450;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-sm);
}

.snapshot-domain {
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  flex: 1;
  min-width: 0;
  max-width: 100%;
}

.snapshot-details {
  color: var(--text-muted);
  white-space: nowrap;
  font-size: var(--font-size-xs);
}

.empty-state {
  text-align: center;
  color: var(--text-muted);
  font-style: italic;
  padding: var(--spacing-xl);
}

/* Help section */
.help-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.help-item h3 {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
  color: var(--color-slate);
}

.help-item h3::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-signal);
}

.help-item code {
  display: block;
  padding: 8px 20px;
  background: var(--color-white);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  font-weight: 450;
  color: var(--text-primary);
  word-break: break-all;
  overflow-wrap: break-word;
  hyphens: auto;
  max-width: 100%;
  box-sizing: border-box;
}

.help-example {
  padding: var(--spacing-md);
  background: var(--color-white);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-md);
}

.help-example p {
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.help-example code {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--text-primary);
  word-break: break-all;
  overflow-wrap: break-word;
  hyphens: auto;
}

/* Warning icon in help section */
.warning-icon {
  flex-shrink: 0;
  color: var(--color-signal);
}

/* Footer — ink band */
.credit {
  background: var(--color-footer);
  color: var(--color-footer-text);
  text-align: center;
  font-size: var(--font-size-sm);
  font-weight: 450;
  padding: var(--spacing-lg);
  margin: var(--spacing-2xl) 0 0;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

/* Responsive design */
@media (max-width: 768px) {
  .container {
    padding: var(--spacing-lg) var(--spacing-sm) var(--spacing-2xl);
    overflow-x: hidden;
  }

  .panel {
    padding: var(--spacing-lg);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
  }

  .header-content {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .brand-subtitle {
    display: none;
  }

  .input-group {
    flex-direction: column;
  }

  .grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    width: 100%;
    max-width: 100%;
    overflow: hidden;
  }

  .snapshots-section,
  .help-section {
    width: 100%;
    max-width: 100%;
    overflow: hidden;
  }
}

@media (max-width: 480px) {
  .panel {
    padding: var(--spacing-md);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .btn {
    padding: 10px 24px;
  }

  .form-input {
    padding: 10px 20px;
  }

  .snapshots-list {
    max-height: 300px;
  }

  .snapshot-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }
}

/* iOS WebKit specific fixes */
@supports (-webkit-touch-callout: none) {
  .panel {
    width: 100vw !important;
    max-width: calc(100vw - 2rem) !important;
    margin-left: auto !important;
    margin-right: auto !important;
  }

  .grid {
    width: 100vw !important;
    max-width: calc(100vw - 2rem) !important;
    margin-left: auto !important;
    margin-right: auto !important;
  }

  .container {
    width: 100vw !important;
    max-width: 100vw !important;
    padding-left: 1rem !important;
    padding-right: 1rem !important;
  }
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-canvas);
}

::-webkit-scrollbar-thumb {
  background: var(--color-taupe);
  border-radius: 5px;
  border: 2px solid var(--color-canvas);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-slate);
}

/* Loading animation */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.loading {
  animation: pulse 1.6s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Accessibility: respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}