/* ================================================================
   MATHOM HOUSE — HYBRID DESIGN SYSTEM
   Layout:  C (sidebar)  |  Aesthetic: A (War Room)  |  Animation: B (aurora)
   ================================================================ */

/* ── ANIMATED CSS PROPERTIES ── */
@property --aurora-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

/* ── DESIGN TOKENS ── */
:root {
  /* backgrounds */
  --bg:           #070a0f;
  --surface:      #0c1420;
  --card-bg:      #101d2e;
  --sidebar-bg:   #080c15;

  /* borders */
  --border:       #1a3040;
  --border-hover: #2a4a60;

  /* text */
  --text:         #c8e0ee;
  --muted:        #4a7a90;
  --dim:          #2a5060;

  /* accents */
  --teal:         #00d4aa;
  --teal-dim:     rgba(0, 212, 170, 0.12);
  --amber:        #f59e0b;
  --amber-dim:    rgba(245, 158, 11, 0.12);
  --violet:       #818cf8;
  --violet-dim:   rgba(129, 140, 248, 0.12);
  --sky:          #38bdf8;
  --sky-dim:      rgba(56, 189, 248, 0.12);
  --red:          #ef4444;
  --red-dim:      rgba(239, 68, 68, 0.12);
  --green:        #22c55e;

  /* layout */
  --sidebar-w:    240px;
  --topbar-h:     52px;
  --card-clip:    12px;

  /* type */
  --font-head:    'Rajdhani', sans-serif;
  --font-body:    'Inter', sans-serif;

  /* transitions */
  --ease:         0.2s ease;
}

/* ── LIGHT MODE ── */
[data-theme="light"] {
  --bg:           #eef2f7;
  --surface:      #f8fafc;
  --card-bg:      #ffffff;
  --border:       #c8d8e8;
  --border-hover: #a0bcd0;
  --text:         #0f2030;
  --muted:        #4a6a80;
  --dim:          #a0c0d0;
  /* sidebar stays dark — intentional */

  /* Accent colors darkened for light-mode contrast (WCAG AA on white) */
  --teal:         #006b52;   /* was #00d4aa — 1.8:1 on white, now ~6:1 */
  --teal-dim:     rgba(0, 107, 82, 0.1);
  --amber:        #92400e;   /* was #f59e0b — 1.5:1, now ~7:1 */
  --amber-dim:    rgba(146, 64, 14, 0.09);
  --violet:       #3730a3;   /* was #818cf8 — 2.7:1, now ~7.5:1 */
  --violet-dim:   rgba(55, 48, 163, 0.09);
  --sky:          #0c4a6e;   /* was #38bdf8 — 1.6:1, now ~9:1 */
  --sky-dim:      rgba(12, 74, 110, 0.08);
  --red:          #b91c1c;   /* was #ef4444 — 3.1:1, now ~6.5:1 */
  --red-dim:      rgba(185, 28, 28, 0.09);
}

/* ── RESET & BASE ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  margin: 0;
  font-size: 15px;
  line-height: 1.5;
  min-height: 100vh;
  transition: background 0.3s, color 0.3s;
}

a { color: var(--teal); text-decoration: none; }
strong { color: var(--text); font-weight: 600; }
em { font-style: italic; }

/* ── MAIN WRAPPER ── */
/* body padding-left handles sidebar offset; main-wrapper is a normal block */
.main-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ── HERO ── */
.hero {
  position: relative;
  min-height: 360px;
  display: flex;
  align-items: flex-end;
  padding: 60px 56px 52px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

/* Aurora from B — animated conic gradient */
.hero-aurora {
  position: absolute; inset: 0; pointer-events: none;
  --aurora-angle: 0deg;
  background: conic-gradient(
    from var(--aurora-angle) at 65% 30%,
    rgba(0,212,170,0.07)   0deg,
    rgba(129,140,248,0.09) 80deg,
    rgba(0,212,170,0.04)   160deg,
    rgba(56,189,248,0.06)  240deg,
    rgba(245,158,11,0.04)  310deg,
    rgba(0,212,170,0.07)   360deg
  );
  animation: aurora-spin 18s linear infinite;
}
@keyframes aurora-spin { to { --aurora-angle: 360deg; } }

/* Hex grid from A */
.hero-hex {
  position: absolute; inset: 0; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='104'%3E%3Cpath d='M30 2 L58 17 L58 47 L30 62 L2 47 L2 17 Z' fill='none' stroke='%2300d4aa' stroke-width='0.5' stroke-opacity='0.1'/%3E%3C/svg%3E");
  background-size: 60px 104px;
}

/* Gradient fade on left so text is readable */
.hero-fade {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(105deg, var(--bg) 35%, transparent 80%);
}

[data-theme="light"] .hero-fade {
  background: linear-gradient(105deg, var(--bg) 25%, transparent 75%);
}

.hero-content {
  position: relative; z-index: 1;
  max-width: 640px;
}

.hero-label {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-head);
  font-size: 11px; letter-spacing: 4px; font-weight: 600;
  color: var(--teal); text-transform: uppercase;
  margin-bottom: 20px;
}
.hero-label-line { flex: 0 0 28px; height: 1px; background: var(--teal); opacity: 0.5; }

.hero-title {
  font-family: var(--font-head);
  font-size: clamp(56px, 8vw, 96px);
  font-weight: 700;
  line-height: 0.9;
  letter-spacing: -2px;
  color: #fff;
  text-transform: uppercase;
  margin: 0 0 20px;
}
[data-theme="light"] .hero-title {
  color: #0a1a28;
}
.hero-title em {
  font-style: normal;
  color: var(--teal);
  -webkit-text-stroke: 1px rgba(0,212,170,0.3);
}
[data-theme="light"] .hero-title em {
  -webkit-text-stroke: none;
}

.hero-sub {
  font-size: 14px; line-height: 1.75;
  color: var(--muted); margin: 0 0 28px;
}
.hero-sub strong { color: var(--text); }

/* Hero pills — quick jump links */
.hero-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.pill {
  display: inline-block;
  font-family: var(--font-head);
  font-size: 11px; font-weight: 600; letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 6px 14px;
  border: 1px solid var(--border);
  color: var(--muted);
  clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
  transition: all var(--ease);
}
.pill:hover, .pill-teal { border-color: var(--teal); color: var(--teal); background: var(--teal-dim); }
.pill-amber { border-color: var(--amber); color: var(--amber); background: var(--amber-dim); }
.pill-sky { border-color: var(--sky); color: var(--sky); background: var(--sky-dim); }
.pill-violet { border-color: var(--violet); color: var(--violet); background: var(--violet-dim); }
.pill:hover { background: var(--teal-dim); border-color: var(--teal); color: var(--teal); }

/* ── MAIN SECTIONS ── */
main { padding: 0 40px 40px; max-width: 1400px; }

/* Section animation — start invisible, reveal on scroll */
.section {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  margin-bottom: 8px;
}
.section.show {
  opacity: 1;
  transform: translateY(0);
}

/* ── SECTOR HEADER ── */
.sec-header {
  display: flex; align-items: center; gap: 16px;
  padding: 48px 0 20px;
}
.sec-id {
  font-family: var(--font-head);
  font-size: 10px; letter-spacing: 3px; font-weight: 600;
  color: var(--teal); text-transform: uppercase;
  white-space: nowrap; flex-shrink: 0;
}
.sec-line {
  flex: 1; height: 1px;
  background: linear-gradient(90deg, rgba(0,212,170,0.4), transparent);
}
.sec-line-r {
  background: linear-gradient(270deg, rgba(0,212,170,0.4), transparent);
}
.sec-name {
  font-family: var(--font-head);
  font-size: 22px; font-weight: 700; letter-spacing: 2px;
  text-transform: uppercase; color: var(--text);
  white-space: nowrap; flex-shrink: 0;
  display: flex; align-items: center; gap: 10px;
}
.sec-tag {
  font-size: 10px; letter-spacing: 2px; font-weight: 600;
  color: var(--violet);
  background: var(--violet-dim);
  border: 1px solid rgba(129,140,248,0.3);
  padding: 2px 8px;
  clip-path: polygon(4px 0%, 100% 0%, calc(100% - 4px) 100%, 0% 100%);
}

/* ── CARDS GRID ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
}

/* ── CARD ── */
.card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 20px 18px;
  text-decoration: none; color: inherit;
  display: flex; flex-direction: column; gap: 8px;
  clip-path: polygon(
    0 0,
    calc(100% - var(--card-clip)) 0,
    100% var(--card-clip),
    100% 100%,
    var(--card-clip) 100%,
    0 calc(100% - var(--card-clip))
  );
  transition: border-color var(--ease), background var(--ease), transform var(--ease), box-shadow var(--ease);
  overflow: hidden;
  min-height: 160px;
}

/* Top-border sweep on hover — the War Room signature */
.card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 100%; height: 2px;
  background: var(--card-accent, var(--teal));
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.35s ease;
}
/* Clipped corner accent */
.card-corner {
  position: absolute; top: 0; right: 0;
  width: var(--card-clip); height: var(--card-clip);
  background: var(--card-accent, var(--teal));
  opacity: 0.25;
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  transition: opacity var(--ease);
}

.card:hover {
  border-color: var(--card-accent, var(--teal));
  background: color-mix(in srgb, var(--card-bg) 80%, var(--card-accent, var(--teal)) 20%);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.4);
}
.card:hover::before { transform: scaleX(1); }
.card:hover .card-corner { opacity: 0.5; }

/* Category accent overrides */
.card-teal   { --card-accent: var(--teal); }
.card-amber  { --card-accent: var(--amber); }
.card-violet { --card-accent: var(--violet); }
.card-sky    { --card-accent: var(--sky); }
.card-red    { --card-accent: var(--red); }

/* Card internals */
.card-tag {
  font-family: var(--font-head);
  font-size: 9px; letter-spacing: 2px; font-weight: 600;
  color: var(--card-accent, var(--teal)); text-transform: uppercase;
  opacity: 0.8;
}
.card-icon img {
  width: 40px; height: 40px; object-fit: contain;
  transition: transform 0.25s ease;
}
.card:hover .card-icon img { transform: scale(1.08); }

.card h3 {
  font-family: var(--font-head);
  font-size: 17px; font-weight: 700; letter-spacing: 0.3px;
  color: #e8f4f8; margin: 0; line-height: 1.2;
}
[data-theme="light"] .card h3 { color: #0a1a28; }

[data-theme="light"] .card p { color: #4a6a80; }

.card p {
  font-size: 12px; line-height: 1.55;
  color: var(--muted); margin: 0;
}

/* ── FOOTER ── */
/* Footer bg is always dark (#080c15) regardless of theme, so text
   colors are hardcoded to dark-mode values — never inherit light theme. */
.site-footer {
  background: var(--sidebar-bg);
  border-top: 1px solid rgba(0,212,170,0.12);
  margin-top: 40px;
}
.footer-inner {
  max-width: 1400px;
  padding: 32px 40px;
  font-size: 13px; line-height: 2;
  color: rgba(140, 170, 190, 0.65);
}
.footer-inner strong { color: #9ab8cc; font-weight: 600; }
.footer-inner a { color: #00d4aa; }
.footer-inner a:hover { color: #33ddb8; text-decoration: underline; }
.footer-inner p + p { margin-top: 8px; }

/* ── BACK TO TOP ── */
#backToTop {
  position: fixed; bottom: 32px; right: 28px;
  width: 40px; height: 40px;
  background: var(--teal);
  color: #070a0f;
  border: none; border-radius: 0;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s, transform 0.2s;
  clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
  z-index: 200;
}
#backToTop.show { opacity: 1; pointer-events: auto; }
#backToTop:hover { transform: translateY(-3px); }

/* ── FORMS ── */
label {
  display: block;
  font-family: var(--font-head);
  font-size: 10px; letter-spacing: 2px; font-weight: 600;
  text-transform: uppercase;
  color: var(--muted);
  margin: 16px 0 6px;
}

input, select, textarea {
  width: 100%;
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 10px 12px;
  font-family: var(--font-body); font-size: 14px;
  transition: border-color var(--ease), box-shadow var(--ease);
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 2px rgba(0,212,170,0.15);
}
select option { background: var(--surface); }
textarea { resize: vertical; }

/* ── BUTTONS ── */
button {
  font-family: var(--font-head);
  font-size: 14px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase;
  background: var(--teal); color: #070a0f;
  border: none; padding: 10px 22px;
  cursor: pointer;
  clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
  transition: background var(--ease), transform var(--ease);
}
button:hover { background: var(--teal); filter: brightness(1.15); transform: translateY(-1px); }
button:active { transform: translateY(0); }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--muted);
  clip-path: none;
}
.btn-ghost:hover { border-color: var(--text); color: var(--text); background: transparent; filter: none; }

/* ── MODALS ── */
.modal {
  position: fixed; z-index: 9999;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 32px;
  width: 90%; max-width: 480px;
  box-shadow: 0 16px 60px rgba(0,0,0,0.6);
  animation: modal-in 0.25s cubic-bezier(0.34, 1.2, 0.64, 1);
}
@keyframes modal-in {
  from { opacity: 0; transform: translate(-50%, -54%); }
  to   { opacity: 1; transform: translate(-50%, -50%); }
}

.modal h2 {
  font-family: var(--font-head);
  font-size: 24px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; color: var(--text);
  margin: 0 0 4px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--teal);
}
.modal p { color: var(--muted); font-size: 14px; margin: 12px 0; }
.modal small { display: block; text-align: right; color: var(--muted); font-size: 11px; margin-top: 4px; }

.modal-buttons {
  display: flex; gap: 10px; margin-top: 20px;
}

.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.75);
  backdrop-filter: blur(3px);
  z-index: 9998;
}
.hidden { display: none; }

.confirmation-message {
  font-family: var(--font-head);
  font-size: 13px; letter-spacing: 1px; text-transform: uppercase;
  color: var(--teal); margin-top: 12px; font-weight: 600;
}

/* ── TOAST ── */
.toast {
  position: fixed; bottom: 28px; right: 80px;
  background: var(--teal); color: #070a0f;
  font-family: var(--font-head);
  font-size: 13px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase;
  padding: 10px 18px;
  clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
  opacity: 0; transform: translateY(6px);
  transition: opacity 0.3s, transform 0.3s;
  z-index: 9999; pointer-events: none;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ── COFFEE BUTTON ── */
.coffee-btn {
  display: inline-block;
  background: #FFDD00; color: #000;
  font-family: var(--font-head);
  font-size: 14px; font-weight: 700; letter-spacing: 1px;
  text-transform: uppercase; text-decoration: none;
  padding: 12px 24px; margin-top: 20px;
  transition: filter var(--ease);
  clip-path: polygon(6px 0%, 100% 0%, calc(100% - 6px) 100%, 0% 100%);
}
.coffee-btn:hover { filter: brightness(1.1); }

/* ── TABLES (calculator pages) ── */
table {
  width: 100%; border-collapse: collapse;
  background: var(--card-bg); color: var(--text);
  font-size: 14px;
}
th, td {
  padding: 12px 16px; text-align: center;
  border: 1px solid var(--border);
}
th {
  font-family: var(--font-head);
  font-size: 12px; letter-spacing: 1.5px; font-weight: 700;
  text-transform: uppercase;
  background: var(--teal); color: #070a0f;
}
tr:nth-child(even) { background: var(--surface); }
.table-container { overflow-x: auto; }

/* ── CONTAINERS (calculator pages) ── */
.container {
  background: var(--card-bg);
  border: 1px solid var(--border);
  padding: 32px;
  margin: 24px auto;
  max-width: 900px;
}
.result, #result, #comparison-result {
  font-family: var(--font-head);
  font-size: 20px; font-weight: 700; letter-spacing: 1px;
  text-align: center; margin-top: 20px;
  color: var(--teal);
}
.calculate-btn { text-align: center; margin-top: 24px; }

/* ── GEAR BOXES (gear.html) ── */
.gear-container { display: flex; flex-wrap: wrap; gap: 20px; justify-content: center; }
.gear-box {
  background: var(--card-bg); border: 1px solid var(--border);
  padding: 24px; width: 340px;
}
.gear-box h2 { font-family: var(--font-head); color: var(--teal); text-align: center; margin-bottom: 16px; }
.gear-box form { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

/* ── SIDEBAR OVERLAY (mobile) ── */
.sidebar-overlay {
  display: none;
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(2px);
  z-index: 299;
}
.sidebar-open .sidebar-overlay { display: block; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .main-wrapper { margin-left: 0; }
  main { padding: 0 20px 32px; }
  .hero { padding: 48px 24px 40px; }
  .hero-title { font-size: clamp(44px, 10vw, 64px); }
  .cards-grid { grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; }
}

@media (max-width: 600px) {
  .cards-grid { grid-template-columns: 1fr 1fr; gap: 8px; }
  .card { min-height: 120px; padding: 16px 14px; }
  .card h3 { font-size: 14px; }
  .hero-title { font-size: 44px; }
  .hero { min-height: 280px; }
}

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
  .hero-aurora { animation: none; }
  .section { transition: none; }
  .card { transition: border-color var(--ease), background var(--ease); }
  .card::before { transition: none; }
}