/* ==========================================================================
   kAsteria — Base + Component Library
   Shared across every "app" page (dashboard, explorer, education, analysis,
   about, settings, 404). The landing page keeps its own bespoke CSS on top
   of tokens.css only.
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--background);
  color: var(--on-surface);
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background var(--theme-transition), color var(--theme-transition);
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; color: inherit; }
::selection { background: var(--gold-accent); color: #050506; }

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 500; margin: 0; letter-spacing: -0.01em; }
.eyebrow, .mono, .label-caps {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--on-surface-variant);
}
.serif-italic { font-family: var(--font-display); font-style: italic; }

.icon-btn {
  width: 38px; height: 38px; display: grid; place-items: center;
  border-radius: 50%; border: 1px solid transparent; background: var(--toggle-bg);
  cursor: pointer; transition: background .25s ease, transform .2s ease;
  color: var(--toggle-icon);
}
.icon-btn:hover { background: var(--toggle-hover); transform: translateY(-1px); }
.icon-btn svg { width: 17px; height: 17px; }

/* --- App shell: floating icon-rail sidebar (the original dashboard/analysis
   design), now used consistently on every app page --- */
.app-shell { display: flex; min-height: 100vh; }

.icon-rail {
  position: fixed; left: 18px; top: 50%; transform: translateY(-50%);
  width: 76px; max-height: 86vh; display: flex; flex-direction: column; align-items: center;
  gap: var(--space-3); padding: var(--space-3) 10px;
  background: var(--sidebar-bg); border: 1px solid var(--card-border); border-radius: 22px;
  backdrop-filter: blur(16px); box-shadow: var(--shadow-elevated); z-index: 60;
}
.icon-rail .rail-logo { width: 34px; height: 34px; border-radius: 50%; object-fit: contain; margin-bottom: 4px; }
.icon-rail nav { display: flex; flex-direction: column; gap: 10px; flex: 1; }
.icon-rail .rail-btn {
  width: 46px; height: 46px; display: grid; place-items: center; border-radius: 12px;
  border: none; background: transparent; color: var(--on-surface-variant); cursor: pointer;
  position: relative; transition: background .2s ease, color .2s ease, transform .2s ease;
}
.icon-rail .rail-btn:hover { background: var(--toggle-bg); color: var(--on-surface); transform: translateY(-1px); }
.icon-rail .rail-btn.active { background: var(--primary); color: var(--on-primary); box-shadow: 0 4px 14px rgba(0,0,0,.25); }
.icon-rail .rail-btn svg { width: 20px; height: 20px; }
.icon-rail .rail-btn .rail-tip {
  position: absolute; left: 100%; margin-left: 12px; top: 50%; transform: translateY(-50%);
  background: var(--on-surface); color: var(--background); padding: 5px 10px; border-radius: 6px;
  font-size: 11px; white-space: nowrap; opacity: 0; pointer-events: none; transition: opacity .15s ease;
}
.icon-rail .rail-btn:hover .rail-tip { opacity: 1; }
.icon-rail .rail-divider { width: 60%; height: 1px; background: var(--card-border); margin: 2px 0; }
.icon-rail .rail-foot { display: flex; flex-direction: column; gap: 8px; }

.app-main { flex: 1; margin-left: 128px; padding: var(--space-6) var(--space-5) var(--space-8); max-width: 1180px; }

@media (max-width: 900px) {
  .icon-rail {
    left: 0; right: 0; top: auto; bottom: 0; transform: none; width: auto; max-height: none;
    flex-direction: row; border-radius: 18px 18px 0 0; padding: 8px 14px; justify-content: space-around;
  }
  .icon-rail .rail-logo, .icon-rail .rail-divider { display: none; }
  .icon-rail nav { flex-direction: row; flex: initial; }
  .icon-rail .rail-foot { flex-direction: row; }
  .icon-rail .rail-btn .rail-tip { display: none; }
  .app-main { margin-left: 0; padding: var(--space-4) var(--space-3) 100px; }
}

.page-hero { margin-bottom: var(--space-6); position: relative; }
.page-hero h1 { font-size: clamp(32px, 4.4vw, 52px); margin: var(--space-2) 0 var(--space-2); }
.page-hero p { max-width: 620px; color: var(--on-surface-variant); font-size: 16px; }
.hero-rule { margin-top: var(--space-4); height: 1px; background: var(--card-border); position: relative; overflow: hidden; }
.hero-rule span { position: absolute; inset: 0 auto 0 0; width: 30%; background: var(--gold-accent); animation: scan 3.2s cubic-bezier(.4,0,.2,1) infinite; }
@keyframes scan { 0% { transform: translateX(-100%);} 100% { transform: translateX(340%);} }

/* --- Cards / panels --- */
.card {
  background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--radius-lg);
  padding: var(--space-4);
}
.card-title { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-size: 19px; margin-bottom: var(--space-3); }

/* --- Buttons --- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  padding: 12px 22px; border-radius: 999px; border: 1px solid var(--outline-variant);
  background: transparent; color: var(--on-surface); font-weight: 600; font-size: 13.5px;
  cursor: pointer; transition: all .2s ease; letter-spacing: .01em;
}
.btn:hover { border-color: var(--on-surface); transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: .4; cursor: not-allowed; transform: none; }
.btn-primary { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.btn-primary:hover { opacity: .88; }
.btn-gold { background: var(--gold-accent); color: #17130a; border-color: var(--gold-accent); }
.btn-ghost { border-color: transparent; }
.btn-sm { padding: 8px 14px; font-size: 12px; }
.btn-block { width: 100%; }

/* --- Forms --- */
.field { margin-bottom: var(--space-3); }
.field label { display: block; font-size: 12.5px; font-weight: 600; margin-bottom: 8px; color: var(--on-surface-variant); }
.input, select.input, textarea.input {
  width: 100%; padding: 12px 14px; border-radius: var(--radius-sm);
  border: 1px solid var(--outline-variant); background: var(--surface-bright); color: var(--on-surface);
  font-size: 14px; transition: border-color .2s ease;
}
.input:focus { outline: none; border-color: var(--gold-accent); }
.search-input-wrap { position: relative; }
.search-input-wrap .input { padding-left: 42px; }
.search-input-wrap svg { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); width: 16px; height: 16px; opacity: .55; }

/* --- Chips / filter buttons --- */
.chip {
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--outline-variant);
  background: transparent; color: var(--on-surface-variant); font-family: var(--font-mono);
  font-size: 11px; letter-spacing: .06em; text-transform: uppercase; cursor: pointer; transition: all .2s ease;
}
.chip:hover { border-color: var(--on-surface); color: var(--on-surface); }
.chip.active { background: var(--primary); color: var(--on-primary); border-color: var(--primary); }
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

/* --- Badges --- */
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 4px 10px; border-radius: 999px; font-size: 11px; font-family: var(--font-mono); text-transform: uppercase; letter-spacing: .05em; }
.badge-candidate { background: color-mix(in srgb, var(--gold-accent) 20%, transparent); color: var(--gold-accent); }
.badge-confirmed { background: color-mix(in srgb, var(--success) 22%, transparent); color: var(--success); }
.badge-false { background: color-mix(in srgb, var(--danger) 20%, transparent); color: var(--danger); }
.badge-neutral { background: var(--toggle-bg); color: var(--on-surface-variant); }

/* --- Table --- */
.table-wrap { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--card-border); }
table.data-table { width: 100%; border-collapse: collapse; background: var(--card-bg); }
table.data-table th {
  text-align: left; padding: 14px 18px; font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: .1em; text-transform: uppercase; color: var(--on-surface-variant);
  border-bottom: 1px solid var(--card-border); white-space: nowrap; cursor: pointer; user-select: none;
  position: sticky; top: 0; background: var(--card-bg);
}
table.data-table th:hover { color: var(--on-surface); }
table.data-table th .sort-arrow { opacity: .5; margin-left: 4px; }
table.data-table td { padding: 12px 18px; border-bottom: 1px solid var(--card-border); font-size: 13.5px; white-space: nowrap; }
table.data-table tbody tr { cursor: pointer; transition: background .15s ease; }
table.data-table tbody tr:hover { background: var(--toggle-bg); }
.table-empty { padding: var(--space-8) var(--space-4); text-align: center; color: var(--on-surface-variant); }
.table-empty .empty-ic { width: 64px; height: 64px; margin: 0 auto var(--space-3); border-radius: 50%; border: 3px solid var(--card-border); display: grid; place-items: center; opacity: .5; }

/* --- Dropzone --- */
.dropzone {
  border: 2px dashed var(--outline-variant); border-radius: var(--radius-lg);
  padding: var(--space-6) var(--space-4); text-align: center; cursor: pointer;
  transition: border-color .2s ease, background .2s ease;
}
.dropzone:hover, .dropzone.drag-over { border-color: var(--gold-accent); background: color-mix(in srgb, var(--gold-accent) 6%, transparent); }
.dropzone svg { width: 36px; height: 36px; margin: 0 auto var(--space-2); opacity: .7; }

/* --- Empty state --- */
.empty-state { text-align: center; padding: var(--space-7) var(--space-3); color: var(--on-surface-variant); }
.empty-state h4 { font-family: var(--font-display); font-style: italic; font-size: 21px; color: var(--on-surface); margin-bottom: 8px; }

/* --- Toast --- */
.toast-stack { position: fixed; bottom: 24px; right: 24px; z-index: 999; display: flex; flex-direction: column; gap: 10px; }
.toast {
  background: var(--on-surface); color: var(--background); padding: 12px 18px; border-radius: var(--radius-md);
  font-size: 13px; box-shadow: var(--shadow-elevated); animation: toast-in .25s ease;
}
@keyframes toast-in { from { opacity: 0; transform: translateY(8px);} to { opacity: 1; transform: translateY(0);} }

/* --- Footer (app pages) --- */
.app-footer { border-top: 1px solid var(--card-border); margin-top: var(--space-8); padding: var(--space-6) var(--space-2); }
.app-footer .foot-grid { display: flex; flex-wrap: wrap; gap: var(--space-4); justify-content: space-between; }
.app-footer a { color: var(--on-surface-variant); font-family: var(--font-mono); font-size: 11px; letter-spacing: .05em; }
.app-footer a:hover { color: var(--on-surface); }

/* --- Scrollbars --- */
.custom-scroll::-webkit-scrollbar { width: 6px; }
.custom-scroll::-webkit-scrollbar-thumb { background: var(--outline-variant); border-radius: 10px; }

/* --- Grid utility --- */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-4); }
@media (max-width: 800px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }

/* --- Planet 3D mount --- */
.planet3d-mount { width: 100%; height: 100%; display: block; }
.hero-orb { position: absolute; right: 0; top: -20px; width: 220px; height: 220px; opacity: .9; pointer-events: none; }
@media (max-width: 900px) { .hero-orb { display: none; } }