/* ============================================================
   Linux Library — Light Theme
   ============================================================ */

:root {
  --bg:                #ffffff;
  --surface:           #f4f4f9;
  --card-bg:           #ffffff;
  --card-border:       #e2e2ed;
  --card-hover-border: #6366f1;
  --card-shadow:       0 4px 20px rgba(99, 102, 241, 0.13);

  --text-primary:      #0f0f1a;
  --text-secondary:    #4b4b6b;
  --text-muted:        #9090b4;

  --accent:            #6366f1;
  --accent-dark:       #4f52d9;
  --accent-light:      #eeeeff;

  --modal-bg:          #ffffff;
  --modal-border:      #e2e2ed;

  --radius-card:       16px;
  --radius-btn:        10px;
  --radius-opt:        12px;
  --radius-modal:      20px;

  --font-display:      'Plus Jakarta Sans', sans-serif;
  --font-body:         'Inter', sans-serif;

  --transition:        0.15s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
}

/* disable all heavy background layers */
.bg-base,
.bg-orb,
.bg-orb-1,
.bg-orb-2,
.bg-orb-3,
.bg-orb-4,
.bg-noise {
  display: none;
}

/* page wrapper */
.page-wrap {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 28px 64px;
}

/* ── header ── */
.site-header {
  padding: 44px 0 36px;
  text-align: center;
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 36px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.logo-mark svg {
  width: 58px;
  height: 58px;
}

.header-text {
  text-align: left;
}

.site-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  line-height: 1.1;
}

.site-sub {
  font-size: clamp(0.85rem, 2vw, 0.95rem);
  color: var(--text-secondary);
  margin-top: 6px;
  font-weight: 400;
  letter-spacing: 0;
}

/* ── github corner ── */
.github-link {
  position: fixed;
  top: 20px;
  right: 24px;
  z-index: 50;
  display: flex;
  opacity: 0.35;
  transition: opacity var(--transition);
}

.github-link svg {
  width: 24px;
  height: 24px;
}

/* override the white fill from the original SVG */
.github-link svg path {
  fill: var(--text-primary);
}

.github-link:hover {
  opacity: 0.85;
}

/* ── grid ── */
.distro-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

@media (max-width: 900px) {
  .distro-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .distro-grid { grid-template-columns: 1fr; gap: 14px; }
  .page-wrap   { padding: 0 16px 48px; }
}

/* ── distro card ── */
.distro-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 24px 20px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  cursor: default;
  transition:
    border-color var(--transition),
    box-shadow var(--transition);
}

.distro-card:hover {
  border-color: var(--card-hover-border);
  box-shadow: var(--card-shadow);
}

/* remove pseudo-element overlay entirely */
.distro-card::before { display: none; }

.card-img-wrap {
  width: 72px;
  height: 72px;
  border-radius: 14px;
  background: var(--surface);
  border: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  transition: border-color var(--transition);
}

.distro-card:hover .card-img-wrap {
  border-color: var(--card-hover-border);
}

.card-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.card-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  text-align: center;
}

.card-actions {
  display: flex;
  gap: 8px;
  width: 100%;
  margin-top: 4px;
}

/* ── buttons ── */
.btn {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid transparent;
  border-radius: var(--radius-btn);
  cursor: pointer;
  padding: 10px 16px;
  transition:
    background var(--transition),
    color var(--transition),
    border-color var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
  user-select: none;
}

.btn:active { opacity: 0.85; }

/* primary: solid accent */
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
  flex: 1;
}

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

/* glass / outline */
.btn-glass {
  background: transparent;
  border-color: var(--card-border);
  color: var(--text-secondary);
}

.btn-glass:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

/* disabled */
.btn-disabled,
.btn-disabled:hover {
  background: var(--surface) !important;
  color: var(--text-muted) !important;
  border-color: var(--card-border) !important;
  box-shadow: none !important;
  cursor: not-allowed !important;
  pointer-events: none !important;
}

/* card-specific button variants */
.btn-download-card,
.btn-about-card {
  flex: 1;
}

.btn-download-card {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-download-card:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
}

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

.btn-about-card:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.btn-arrow {
  font-size: 1.1em;
  line-height: 1;
  display: inline-block;
}

/* ── overlay ── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 100;
  cursor: pointer;
}

.overlay.hidden { display: none; }

/* ── modal ── */
.modal {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 200;
  width: min(520px, calc(100vw - 32px));
  background: var(--modal-bg);
  border: 1px solid var(--modal-border);
  border-radius: var(--radius-modal);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.16);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.modal.hidden { display: none; }

.modal.modal-enter {
  animation: modalIn 0.18s ease both;
}

@keyframes modalIn {
  from { opacity: 0; transform: translate(-50%, -47%); }
  to   { opacity: 1; transform: translate(-50%, -50%); }
}

/* modal header */
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 22px 16px;
  border-bottom: 1px solid var(--card-border);
}

.modal-title-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.modal-icon {
  width: 36px;
  height: 36px;
  object-fit: contain;
  border-radius: 8px;
  background: var(--surface);
  padding: 4px;
  border: 1px solid var(--card-border);
}

.modal-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.modal-close-btn {
  background: var(--surface);
  border: 1px solid var(--card-border);
  color: var(--text-secondary);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition);
  flex-shrink: 0;
}

.modal-close-btn:hover {
  background: var(--accent-light);
  border-color: var(--accent);
  color: var(--accent);
}

/* modal body */
.modal-body {
  padding: 22px;
  flex: 1;
  overflow-y: auto;
  max-height: 420px;
}

.modal-body::-webkit-scrollbar { width: 4px; }
.modal-body::-webkit-scrollbar-track { background: transparent; }
.modal-body::-webkit-scrollbar-thumb {
  background: var(--card-border);
  border-radius: 4px;
}

/* about text */
.about-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* question label */
.question-label {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

/* options */
.options-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.option-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border-radius: var(--radius-opt);
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  cursor: pointer;
  transition:
    background var(--transition),
    border-color var(--transition);
  user-select: none;
}

.option-item:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.option-item.selected {
  border-color: var(--accent);
  background: var(--accent-light);
}

.option-radio {
  width: 17px;
  height: 17px;
  border-radius: 50%;
  border: 2px solid var(--card-border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition);
  position: relative;
}

.option-item.selected .option-radio {
  border-color: var(--accent);
}

.option-radio::after {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0;
  transform: scale(0);
  transition: opacity 0.15s, transform 0.15s;
}

.option-item.selected .option-radio::after {
  opacity: 1;
  transform: scale(1);
}

.option-label {
  font-size: 0.9rem;
  color: var(--text-primary);
  line-height: 1.4;
}

/* step indicator */
.step-indicator {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 18px;
}

.step-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--card-border);
  transition: background 0.15s, width 0.15s, border-radius 0.15s;
}

.step-dot.active {
  background: var(--accent);
  width: 18px;
  border-radius: 3px;
}

.step-dot.done {
  background: var(--accent);
  opacity: 0.35;
}

/* final download area */
.final-download-area {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.checksums-section {
  margin-bottom: 4px;
}

.checksums-heading {
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.checksums-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn-checksum {
  font-size: 0.8rem;
  padding: 7px 13px;
  border-radius: 8px;
  color: var(--text-secondary);
  text-decoration: none;
}

.btn-checksum:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.checksums-empty {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-style: italic;
}

/* download ready */
.download-ready {
  text-align: center;
  padding: 8px 0 4px;
}

.download-ready-icon {
  font-size: 2rem;
  margin-bottom: 10px;
  display: block;
}

.download-ready-text {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

/* modal footer */
.modal-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px 18px;
  border-top: 1px solid var(--card-border);
  gap: 12px;
}

.modal-footer.hidden { display: none; }

.modal-footer--center {
  justify-content: center;
}

.modal-footer .btn {
  min-width: 100px;
  padding: 10px 20px;
}

/* site footer */
.site-footer {
  text-align: center;
  padding: 28px 0 16px;
  font-size: 0.78rem;
  color: var(--text-muted);
  border-top: 1px solid var(--card-border);
  margin-top: 8px;
  letter-spacing: 0.02em;
}

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

/* focus */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* responsive tweaks */
@media (max-width: 560px) {
  .header-inner      { flex-direction: column; text-align: center; }
  .header-text       { text-align: center; }
  .modal             { width: calc(100vw - 20px); }
  .modal-body        { padding: 16px; max-height: 340px; }
  .modal-header      { padding: 14px 16px 12px; }
  .modal-footer      { padding: 12px 16px 14px; }
  .modal-footer .btn { min-width: 80px; padding: 9px 14px; }
  .card-actions      { flex-direction: row; }
}