/* ══════════════════════════════════════════════
   TERRA — style.css
   Dark cartographic theme
   Fonts: Cormorant Garamond (display) · Outfit (UI)
   ══════════════════════════════════════════════ */

/* ─── Design Tokens ─────────────────────────── */
:root {
  --bg:         #0c1015;
  --surface:    #131921;
  --card:       #1b2433;
  --border:     #273347;
  --border-dim: #1e2c3e;

  --gold:       #d4a843;
  --gold-glow:  rgba(212, 168, 67, 0.14);
  --gold-line:  rgba(212, 168, 67, 0.35);

  --text:       #e4eaf3;
  --muted:      #7a90a8;
  --dim:        #3d5068;

  --ok-bg:      #132a1e;
  --ok-border:  #1e6b38;
  --ok-text:    #4ade80;

  --mid-bg:     #2a1f00;
  --mid-border: #a07010;
  --mid-text:   #f0b840;

  --bad-bg:     #2a1218;
  --bad-border: #7a1e28;
  --bad-text:   #f87171;

  --r:  8px;
  --rl: 14px;
  --t:  0.18s ease;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Outfit', sans-serif;
  font-weight: 400;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Atmospheric background — subtle longitude/latitude grid */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% -10%, rgba(212,168,67,0.06) 0%, transparent 70%),
    repeating-linear-gradient(0deg,   transparent, transparent 59px, rgba(255,255,255,0.018) 59px, rgba(255,255,255,0.018) 60px),
    repeating-linear-gradient(90deg,  transparent, transparent 59px, rgba(255,255,255,0.018) 59px, rgba(255,255,255,0.018) 60px);
  pointer-events: none;
  z-index: 0;
}

/* ─── Header ────────────────────────────────── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 16, 21, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 700px;
  margin: 0 auto;
  width: 100%;
  padding: 0.7rem 1.25rem;
}

.header-rule {
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--gold-line) 30%, var(--gold-line) 70%, transparent 100%);
}

/* Logo */
.logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.logo-text {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.95rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.35em;
  line-height: 1;
  text-shadow: 0 0 28px rgba(212,168,67,0.3);
}

.logo-sub {
  font-size: 0.58rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin-top: 1px;
}

/* Icon buttons */
.icon-btn {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  transition: all var(--t);
  flex-shrink: 0;
}

.icon-btn svg { width: 15px; height: 15px; }

.icon-btn:hover {
  border-color: var(--gold);
  color: var(--gold);
  background: var(--gold-glow);
}

/* ─── Main Content ──────────────────────────── */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.1rem;
  padding: 1.4rem 1rem 2.5rem;
  max-width: 700px;
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
}

/* Puzzle meta line */
.puzzle-meta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.puzzle-num {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.12em;
  background: var(--gold-glow);
  border: 1px solid var(--gold-line);
  padding: 0.18rem 0.65rem;
  border-radius: 20px;
}

.puzzle-hint {
  font-size: 0.72rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* ─── Game Board ────────────────────────────── */
.game-area { width: 100%; }

/* Column headers */
.col-headers {
  display: grid;
  grid-template-columns: 2fr 1.4fr 1fr 1fr 1.5fr;
  gap: 4px;
  padding: 0 2px;
  margin-bottom: 5px;
}

.ch {
  font-size: 0.57rem;
  font-weight: 600;
  color: var(--dim);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-align: center;
}

.ch-name { text-align: left; padding-left: 10px; }

/* Guess rows */
.guess-row {
  display: grid;
  grid-template-columns: 2fr 1.4fr 1fr 1fr 1.5fr;
  gap: 4px;
  margin-bottom: 4px;
}

/* Individual cells */
.cell {
  height: 52px;
  border-radius: var(--r);
  border: 1px solid var(--border-dim);
  background: var(--card);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.82rem;
  font-weight: 500;
  text-align: center;
  line-height: 1.3;
  overflow: hidden;
  white-space: nowrap;
}

/* Name cell */
.cell-name {
  justify-content: flex-start;
  padding: 0 10px;
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--text);
  gap: 7px;
  background: var(--surface);
  border-color: var(--border);
}

.cell-name .flag { font-size: 1.05rem; flex-shrink: 0; }
.cell-name .cname { overflow: hidden; text-overflow: ellipsis; min-width: 0; }

/* Distance cell inner layout */
.cell-dist {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
}

.dist-arrow { font-size: 1rem; line-height: 1; }
.dist-km    { font-size: 0.62rem; opacity: 0.82; }

/* Cell colour states */
.cell.ok  { background: var(--ok-bg);  border-color: var(--ok-border);  color: var(--ok-text); }
.cell.mid { background: var(--mid-bg); border-color: var(--mid-border); color: var(--mid-text); }
.cell.bad { background: var(--bad-bg); border-color: var(--bad-border); color: var(--bad-text); }

/* Staggered reveal flip animation */
.cell.reveal {
  animation: flipIn 0.38s cubic-bezier(0.34,1.26,0.64,1) both;
}

@keyframes flipIn {
  0%   { transform: scaleY(0.05); opacity: 0; }
  60%  { transform: scaleY(1.04); }
  100% { transform: scaleY(1);    opacity: 1; }
}

/* Golden pulse on correct guess row */
.guess-row.win-row .cell {
  animation: winPulse 0.5s ease both;
}

@keyframes winPulse {
  0%   { box-shadow: 0 0 0 0 rgba(212,168,67,0.6); }
  50%  { box-shadow: 0 0 0 6px rgba(212,168,67,0); }
  100% { box-shadow: none; }
}

/* Empty slot rows */
.empty-row {
  display: grid;
  grid-template-columns: 2fr 1.4fr 1fr 1fr 1.5fr;
  gap: 4px;
  margin-bottom: 4px;
  opacity: 0.28;
}

.empty-cell {
  height: 52px;
  border-radius: var(--r);
  border: 1px dashed var(--border-dim);
}

/* ─── Input Zone ────────────────────────────── */
.input-zone {
  width: 100%;
  display: flex;
  gap: 8px;
  align-items: flex-start;
}

.input-wrap {
  flex: 1;
  position: relative;
}

#guessInput {
  width: 100%;
  height: 52px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--rl);
  color: var(--text);
  font-family: 'Outfit', sans-serif;
  font-size: 1rem;
  padding: 0 44px 0 18px;
  outline: none;
  transition: border-color var(--t), box-shadow var(--t);
}

#guessInput:focus {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px var(--gold-glow);
}

#guessInput::placeholder { color: var(--dim); }
#guessInput:disabled { opacity: 0.45; cursor: not-allowed; }

.clear-btn {
  position: absolute;
  right: 13px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 5px;
  line-height: 1;
  transition: color var(--t);
}
.clear-btn:hover { color: var(--text); }

/* Autocomplete dropdown */
.dropdown {
  position: absolute;
  top: calc(100% + 5px);
  left: 0;
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rl);
  overflow: hidden;
  box-shadow: 0 12px 40px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.04);
  z-index: 200;
  max-height: 290px;
  overflow-y: auto;
}

.dd-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.65rem 1.1rem;
  font-size: 0.9rem;
  cursor: pointer;
  border-bottom: 1px solid rgba(255,255,255,0.04);
  transition: background var(--t), color var(--t);
}
.dd-item:last-child { border-bottom: none; }
.dd-item .flag { font-size: 1.05rem; flex-shrink: 0; }
.dd-item:hover, .dd-item.active {
  background: var(--gold-glow);
  color: var(--gold);
}

/* Submit button */
.submit-btn {
  height: 52px;
  padding: 0 1.5rem;
  background: var(--gold);
  color: #0c1015;
  border: none;
  border-radius: var(--rl);
  font-family: 'Outfit', sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--t);
}

.submit-btn:hover:not(:disabled) {
  background: #e8be58;
  transform: translateY(-1px);
  box-shadow: 0 5px 20px rgba(212,168,67,0.28);
}

.submit-btn:active:not(:disabled) { transform: translateY(0); }

.submit-btn:disabled { opacity: 0.35; cursor: not-allowed; transform: none; }

/* Shake on bad input */
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%       { transform: translateX(-9px); }
  60%       { transform: translateX(9px); }
  80%       { transform: translateX(-4px); }
}
.shake { animation: shake 0.35s ease; }

/* ─── Result Banner ─────────────────────────── */
.result-banner {
  width: 100%;
  padding: 1.1rem 1.4rem;
  border-radius: var(--rl);
  text-align: center;
  font-size: 0.95rem;
  font-weight: 500;
  line-height: 1.55;
  animation: fadeUp 0.4s ease both;
}

.result-banner.win  { background: var(--ok-bg);  border: 1px solid var(--ok-border);  color: var(--ok-text); }
.result-banner.loss { background: var(--bad-bg); border: 1px solid var(--bad-border); color: var(--bad-text); }

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Modals ────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  z-index: 400;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--rl);
  padding: 2rem;
  max-width: 460px;
  width: 100%;
  position: relative;
  animation: slideUp 0.25s cubic-bezier(0.34,1.26,0.64,1);
  max-height: 92dvh;
  overflow-y: auto;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(22px) scale(0.97); }
  to   { opacity: 1; transform: translateY(0)    scale(1); }
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: none;
  color: var(--muted);
  font-size: 0.8rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--t);
}
.modal-close:hover { color: var(--text); border-color: var(--text); }

.modal-title {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.65rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.04em;
  margin-bottom: 0.85rem;
}

.modal-intro {
  font-size: 0.87rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 1.1rem;
}

.modal-intro strong { color: var(--text); }

/* Help — rules */
.rule-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-bottom: 1.2rem;
}

.rule-item {
  display: flex;
  gap: 0.75rem;
  font-size: 0.84rem;
  color: var(--muted);
  line-height: 1.5;
}

.rule-icon { flex-shrink: 0; font-size: 1rem; margin-top: 1px; }
.rule-item strong { color: var(--text); }

/* Colour legend */
.legend {
  display: flex;
  gap: 1.1rem;
  flex-wrap: wrap;
  margin-bottom: 1.2rem;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.swatch {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  flex-shrink: 0;
}

.swatch-correct { background: var(--ok-border); }
.swatch-close   { background: var(--mid-border); }
.swatch-wrong   { background: var(--bad-border); }

.modal-note {
  font-size: 0.72rem;
  color: var(--dim);
  text-align: center;
  border-top: 1px solid var(--border-dim);
  padding-top: 1rem;
  margin-top: 0.5rem;
}

/* Stats grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin: 1.1rem 0 1.5rem;
}

.stat-box {
  background: var(--card);
  border: 1px solid var(--border-dim);
  border-radius: var(--r);
  padding: 0.8rem 0.4rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.stat-val {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.stat-lbl {
  font-size: 0.62rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Share section */
.share-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  border-top: 1px solid var(--border-dim);
  padding-top: 1.2rem;
}

.share-preview {
  font-family: 'Courier New', monospace;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--border-dim);
  border-radius: var(--r);
  padding: 1rem 1.2rem;
  width: 100%;
  white-space: pre;
  text-align: center;
  overflow-x: auto;
}

.share-btn {
  background: var(--gold);
  color: #0c1015;
  border: none;
  border-radius: var(--rl);
  padding: 0.75rem 2.2rem;
  font-family: 'Outfit', sans-serif;
  font-size: 0.88rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  cursor: pointer;
  transition: all var(--t);
}

.share-btn:hover {
  background: #e8be58;
  transform: translateY(-1px);
  box-shadow: 0 5px 20px rgba(212,168,67,0.28);
}

.share-feedback {
  font-size: 0.8rem;
  color: var(--ok-text);
  font-weight: 600;
  animation: fadeIn 0.3s ease;
}

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

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--surface); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ─── Mobile Tweaks ─────────────────────────── */
@media (max-width: 520px) {
  .col-headers,
  .guess-row,
  .empty-row {
    grid-template-columns: 1.75fr 1.2fr 0.9fr 0.9fr 1.25fr;
  }

  .cell        { height: 48px; font-size: 0.75rem; }
  .cell-name   { font-size: 0.76rem; padding: 0 8px; gap: 5px; }
  .cell-name .flag { font-size: 0.95rem; }
  .empty-cell  { height: 48px; }

  .logo-text   { font-size: 1.65rem; }
  .submit-btn  { padding: 0 1rem; font-size: 0.76rem; }

  .stats-grid  { gap: 0.35rem; }
  .stat-val    { font-size: 1.7rem; }

  .modal       { padding: 1.5rem 1.25rem; }
  .modal-title { font-size: 1.4rem; }

  main { padding: 1rem 0.75rem 2rem; gap: 0.9rem; }
}

@media (max-width: 380px) {
  .ch { font-size: 0.48rem; }
  .col-headers,
  .guess-row,
  .empty-row {
    grid-template-columns: 1.6fr 1.1fr 0.82fr 0.82fr 1.1fr;
  }
}