/* ============================================================
   minijxl — Neubrutalist Design System
   ============================================================ */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #1a1a1a;
  --white: #fafafa;
  --gray: #e5e5e5;
  --gray-dark: #888;
  --accent: #62C6F2;
  --accent-dark: #3aa8d8;
  --warn: #ff6b35;
  --border: 3px solid var(--black);
  --shadow: 4px 4px 0 var(--black);
  --shadow-sm: 2px 2px 0 var(--black);
  --radius: 0;
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  color-scheme: light dark;
}

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

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--black);
  line-height: 1.6;
  min-height: 100dvh;
}

a { color: var(--accent-dark); text-decoration-thickness: 2px; text-underline-offset: 2px; }
a:hover { color: var(--black); }

code { font-family: var(--mono); background: var(--gray); padding: 0.1em 0.3em; border: 1px solid var(--black); font-size: 0.9em; }

strong { font-weight: 700; }

/* --- Skip Link --- */
.skip-link {
  position: absolute; top: -100%; left: 0; z-index: 9999;
  padding: 0.5rem 1rem; background: var(--accent); color: var(--black); border: var(--border);
  font-weight: 700; text-decoration: none;
}
.skip-link:focus { top: 0; }

/* --- Layout --- */
.container { max-width: 720px; margin: 0 auto; padding: 2rem 1rem; }

/* --- Header --- */
header { text-align: center; margin-bottom: 2rem; }

header h1 {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.tagline { font-size: 1rem; color: var(--gray-dark); max-width: 40ch; margin: 0 auto; }

/* --- Cards --- */
.card {
  border: var(--border);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  background: var(--white);
}

.card h2, .card h3 { font-size: 1.1rem; font-weight: 800; margin-bottom: 0.5rem; text-transform: uppercase; letter-spacing: 0.02em; }
.card p { margin-bottom: 0.5rem; }
.card p:last-child { margin-bottom: 0; }

.card--warning { border-color: var(--warn); background: #fff3ee; }
.card--warning h2 { color: var(--warn); }
.card--notice { border-color: var(--accent); background: #eef9ff; }
.card--notice h2 { color: var(--accent-dark); }

.card--action { cursor: pointer; transition: transform 80ms var(--ease), box-shadow 80ms var(--ease); }
.card--action:hover, .card--action:focus-visible { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--black); }

/* --- Drop Zone --- */
#drop-zone {
  border: 4px dashed var(--black);
  padding: 3rem 1.5rem;
  text-align: center;
  cursor: pointer;
  margin-bottom: 1.5rem;
  transition: background 120ms var(--ease), border-color 120ms var(--ease);
  background: var(--white);
}
#drop-zone:hover, #drop-zone:focus-visible { background: var(--gray); }
#drop-zone.drag-over { border-color: var(--accent); background: #e8f7fd; border-style: solid; }
#drop-zone[aria-disabled="true"] { opacity: 0.4; pointer-events: none; }

#drop-zone strong { font-size: 1.25rem; display: block; margin-bottom: 0.25rem; }
.muted { color: var(--gray-dark); font-size: 0.875rem; }

/* --- File Input (hidden) --- */
#file-input { display: none; }

/* --- Download Group --- */
.download-group { display: flex; gap: 0.5rem; margin-bottom: 1.5rem; }
.download-group button {
  flex: 1; padding: 0.75rem 1rem;
  font-family: var(--font); font-size: 0.9rem; font-weight: 700;
  border: var(--border); background: var(--accent); color: var(--black);
  cursor: pointer; box-shadow: var(--shadow-sm);
  transition: transform 60ms var(--ease), box-shadow 60ms var(--ease);
}
.download-group button:hover:not(:disabled) { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--black); }
.download-group button:active:not(:disabled) { transform: translate(1px, 1px); box-shadow: 1px 1px 0 var(--black); }
.download-group button:disabled { opacity: 0.5; cursor: not-allowed; }
.auto-toggle { flex: 0 0 auto !important; background: var(--white) !important; }
.auto-toggle[aria-pressed="true"] { background: var(--accent) !important; }

/* --- File List --- */
.file-item {
  border: var(--border); padding: 0.75rem 1rem; margin-bottom: 0.75rem;
  display: flex; align-items: center; gap: 1rem;
  background: var(--white);
}
.file-info { flex: 1; min-width: 0; }
.file-name { font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.file-progress { height: 4px; background: var(--gray); margin: 0.25rem 0; border: 1px solid var(--black); }
.file-progress-bar { height: 100%; width: 0; background: var(--accent); transition: width 300ms var(--ease); }
.file-progress-bar.complete { background: #22c55e; }
.file-size { font-size: 0.8rem; color: var(--gray-dark); }
.file-settings { font-family: var(--mono); font-size: 0.7rem; color: var(--gray-dark); margin-top: 0.125rem; }
.size-reduction { font-weight: 700; color: oklch(0.65 0.2 var(--savings-hue, 100)); }
.warning-text { color: var(--warn); font-weight: 600; }

.file-actions { display: flex; gap: 0.25rem; flex-shrink: 0; }
.file-actions button {
  width: 2rem; height: 2rem;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--black); background: var(--white);
  cursor: pointer; font-size: 0.8rem; font-weight: 700;
  transition: background 80ms;
}
.file-actions button:hover:not([disabled]) { background: var(--gray); }
.file-actions button[disabled] { opacity: 0.3; cursor: not-allowed; }
.meta-list { display: flex; flex-wrap: wrap; gap: 0.25rem 0.75rem; font-size: 0.8rem; }

/* --- Stats --- */
.stats-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem;
  text-align: center; margin-bottom: 1rem;
}
.stat-value { font-size: 1.5rem; font-weight: 900; line-height: 1.2; }
.stat-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--gray-dark); }

/* --- Globe (CSS-only) --- */
.globe {
  --globe-size: 160px;
  width: var(--globe-size); height: var(--globe-size);
  position: relative;
  border-radius: 50%; overflow: hidden;
  margin: 0 auto;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4), 0 0 60px rgba(98,198,242,0.15);
}
.globe-sphere {
  position: absolute; inset: 0;
  /* Tile width = 2 * height (image is 2:1 aspect). Scroll exactly one tile for seamless loop. */
  background: url('assets/globe/earth_day_1k.jpg') repeat-x 0 0 / calc(var(--globe-size) * 2) var(--globe-size);
  animation: globe-spin 20s linear infinite;
}
.globe-highlight {
  position: absolute; inset: 0; border-radius: 50%;
  background:
    /* Specular highlight — small bright spot top-left */
    radial-gradient(circle at 30% 25%, rgba(255,255,255,0.5) 0%, transparent 25%),
    /* Ambient light — broad soft glow */
    radial-gradient(circle at 40% 35%, rgba(255,255,255,0.15) 0%, transparent 55%),
    /* Edge darkening — strong falloff fakes sphere curvature */
    radial-gradient(circle at 50% 50%, transparent 40%, rgba(0,0,0,0.3) 65%, rgba(0,0,0,0.7) 85%, rgba(0,0,0,0.9) 100%);
  pointer-events: none;
}
@keyframes globe-spin { to { background-position-x: calc(var(--globe-size) * -2); } }

/* --- Language Selector --- */
.lang-selector {
  display: flex; justify-content: center; flex-wrap: wrap;
  gap: 0.25rem; margin-top: 0.75rem;
}
.lang-flag {
  font-size: 1.5rem; text-decoration: none;
  width: 2.25rem; height: 2.25rem;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid transparent;
  transition: transform 100ms var(--ease);
  cursor: pointer;
}
.lang-flag:hover { transform: scale(1.2); }
.lang-flag--active { border-color: var(--accent); background: var(--gray); }

/* --- Tabs --- */
.tabs { display: flex; gap: 0; margin-bottom: 0.75rem; }
.tab {
  flex: 1; padding: 0.5rem;
  font-family: var(--font); font-size: 0.85rem; font-weight: 700;
  border: var(--border); background: var(--white);
  cursor: pointer; text-align: center;
}
.tab + .tab { border-left: 0; }
.tab[aria-selected="true"] { background: var(--black); color: var(--white); }

/* --- Savings --- */
.savings-results { font-size: 0.9rem; }
.result-line { display: flex; justify-content: space-between; padding: 0.25rem 0; border-bottom: 1px solid var(--gray); }
.result-line:last-child { border-bottom: 0; }

/* --- Settings Gear --- */
.settings-gear {
  position: fixed; top: 1rem; right: 1rem; z-index: 100;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border: var(--border); background: var(--white); cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform 80ms var(--ease);
}
.settings-gear:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--black); }
.settings-gear.is-spinning svg { animation: spin-gear 400ms var(--ease); }
@keyframes spin-gear { to { transform: rotate(180deg); } }

/* --- Settings Shell --- */
.settings-shell {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,0.5);
  display: none; overflow-y: auto;
  padding: 2rem 1rem;
}
.settings-shell.is-open { display: block; }
body.modal-open { overflow: hidden; }

.settings-panel {
  max-width: 600px; margin: 0 auto;
}
.settings-content { display: flex; flex-direction: column; gap: 1rem; }

.settings-block { background: var(--white); }
.settings-block h3 { font-size: 1rem; text-transform: uppercase; margin-bottom: 0.25rem; }
.settings-block.is-disabled { opacity: 0.4; pointer-events: none; }

.disabled-reason-box {
  background: #fff3ee; border: 2px solid var(--warn); padding: 0.5rem;
  margin-bottom: 0.5rem; font-size: 0.8rem; font-weight: 600;
}

/* --- Form Controls --- */
.setting-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.375rem 0; gap: 0.75rem;
}
.setting-row label:first-child { font-weight: 600; font-size: 0.9rem; }

.range-row {
  display: flex; align-items: center; gap: 0.75rem;
}
.range-row input[type="range"] { flex: 1; }
.range-value {
  font-family: var(--mono); font-weight: 700; font-size: 0.9rem;
  min-width: 3ch; text-align: right;
}

/* Toggle Switch */
.toggle { position: relative; display: inline-block; width: 44px; height: 24px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; position: absolute; }
.toggle-track {
  position: absolute; inset: 0; cursor: pointer;
  background: var(--gray); border: 2px solid var(--black);
  transition: background 150ms;
}
.toggle-track::after {
  content: ''; position: absolute; top: 2px; left: 2px;
  width: 16px; height: 16px; background: var(--black);
  transition: transform 150ms;
}
.toggle input:checked + .toggle-track { background: var(--accent); }
.toggle input:checked + .toggle-track::after { transform: translateX(20px); }
.toggle input:focus-visible + .toggle-track { outline: 2px solid var(--accent); outline-offset: 2px; }
.toggle input:disabled + .toggle-track { opacity: 0.4; cursor: not-allowed; }

/* Radio-as-checkbox groups (exclusive) */
.radio-group { display: flex; flex-direction: column; gap: 0.375rem; }
.radio-group label {
  display: flex; align-items: center; gap: 0.5rem;
  font-size: 0.9rem; font-weight: 500; cursor: pointer;
}
.radio-group input[type="checkbox"] {
  appearance: none; -webkit-appearance: none;
  width: 18px; height: 18px; flex-shrink: 0;
  border: 2px solid var(--black); background: var(--white);
  cursor: pointer; position: relative;
}
.radio-group input[type="checkbox"]:checked { background: var(--accent); }
.radio-group input[type="checkbox"]:checked::after {
  content: ''; position: absolute; top: 2px; left: 5px;
  width: 5px; height: 9px;
  border: solid var(--black); border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}
.radio-group input[type="checkbox"]:disabled { opacity: 0.4; cursor: not-allowed; }

/* Number inputs & stepper */
input[type="number"] {
  width: 5rem; padding: 0.375rem 0.5rem;
  font-family: var(--mono); font-size: 0.9rem;
  border: var(--border); background: var(--white);
  text-align: center;
}
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; }
input[type="number"] { -moz-appearance: textfield; }

.stepper-row {
  display: flex; align-items: center; gap: 0.25rem;
  padding-left: 1.75rem; margin: 0.25rem 0;
}
.stepper-row button {
  width: 2rem; height: 2rem;
  border: var(--border); background: var(--white);
  cursor: pointer; font-size: 1rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.stepper-row button:hover { background: var(--gray); }
.stepper-row button:disabled { opacity: 0.4; cursor: not-allowed; }

input[type="range"] {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 8px;
  background: var(--gray); border: 2px solid var(--black);
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 20px; height: 20px;
  background: var(--accent); border: 2px solid var(--black);
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px; border-radius: 0;
  background: var(--accent); border: 2px solid var(--black);
  cursor: pointer;
}

input[type="color"] {
  width: 44px; height: 32px; padding: 2px;
  border: var(--border); background: var(--white); cursor: pointer;
}

.metadata-sub { padding-left: 1rem; border-left: 3px solid var(--gray); margin-top: 0.5rem; }

.subsection { padding-left: 1rem; border-left: 3px solid var(--gray); margin-top: 0.5rem; }
.subsection.is-disabled { opacity: 0.4; pointer-events: none; }

.hint { font-size: 0.8rem; color: var(--gray-dark); margin-bottom: 0.5rem; }
.hint--warn { color: var(--warn); }

hr { border: none; border-top: 2px solid var(--gray); margin: 0.75rem 0; }

/* Reset button */
#reset-settings-button {
  width: 100%; padding: 0.75rem;
  font-family: var(--font); font-size: 0.9rem; font-weight: 700;
  border: var(--border); background: var(--warn); color: var(--white);
  cursor: pointer; box-shadow: var(--shadow-sm);
}
#reset-settings-button:hover { transform: translate(-1px, -1px); box-shadow: 3px 3px 0 var(--black); }

/* --- Compare Overlay --- */
.compare-overlay {
  position: fixed; inset: 0; z-index: 300;
  background: rgba(0,0,0,0.85);
  display: none; flex-direction: column; align-items: center; justify-content: center;
  padding: 2rem;
}
.compare-overlay.is-open { display: flex; }
.compare-close {
  position: absolute; top: 1rem; right: 1rem;
  width: 44px; height: 44px; font-size: 1.5rem;
  border: var(--border); background: var(--white); cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.compare-stage { max-width: 100%; max-height: 80vh; }
.compare-content { position: relative; width: 100%; height: 100%; }
.compare-content img { width: 100%; height: 100%; object-fit: contain; display: block; }
.compare-bar {
  position: absolute; bottom: 0; padding: 0.5rem 0.75rem;
  font-family: var(--mono); font-size: 0.75rem; font-weight: 700;
  color: #fff; white-space: nowrap;
  text-shadow: 0 1px 3px rgba(0,0,0,0.8);
}
.compare-bar--left { left: 0; background: rgba(255,100,50,0.85); }
.compare-bar--right { right: 0; background: rgba(30,144,255,0.85); }
.compare-bar__name { font-weight: 800; }
.compare-bar__size { opacity: 0.9; }

/* --- Processing Status --- */
#processing-status { text-align: center; padding: 0.5rem; margin-bottom: 1rem; font-weight: 600; }

/* --- Utilities --- */
.hidden { display: none !important; }

/* --- Dark Mode --- */
@media (prefers-color-scheme: dark) {
  :root {
    --black: #f0f0f0;
    --white: #1a1a1a;
    --gray: #333;
    --gray-dark: #999;
    --accent: #62C6F2;
    --accent-dark: #80d4f7;
  }
  body { background: #1a1a1a; color: #f0f0f0; }
  .card--warning { background: #2a1a10; }
  .card--notice { background: #102530; }
  #drop-zone.drag-over { background: #1a2a35; }
  .disabled-reason-box { background: #2a1a10; }
}

/* --- Mobile --- */
@media (max-width: 480px) {
  .container { padding: 1rem 0.75rem; }
  header h1 { font-size: 2.25rem; }
  #drop-zone { padding: 2rem 1rem; }
  .stats-grid { grid-template-columns: 1fr; gap: 0.5rem; }
  .globe { --globe-size: 120px; }
}