/* ============================================================
   STADIUM COPILOT — FIFA World Cup 2026
   Premium dark-mode UI with glassmorphism, micro-animations,
   and a vibrant turf-green accent palette.
   ============================================================ */

:root {
  --navy:        #080e1a;
  --navy-mid:    #0d1526;
  --panel:       #111a2e;
  --panel-alt:   #172037;
  --panel-glass: rgba(17, 26, 46, 0.75);
  --line:        #1e2d4a;
  --line-light:  #263556;

  --turf:        #22c55e;
  --turf-bright: #4ade80;
  --turf-dim:    #166534;
  --turf-glow:   rgba(34, 197, 94, 0.15);

  --amber:       #f59e0b;
  --amber-dim:   rgba(245, 158, 11, 0.15);
  --red:         #ef4444;
  --red-dim:     rgba(239, 68, 68, 0.15);

  --ink:         #f1f5f9;
  --ink-mid:     #cbd5e1;
  --ink-dim:     #64748b;
  --steel:       #60a5fa;

  --display:     "Barlow Condensed", sans-serif;
  --body:        "Inter", sans-serif;
  --mono:        "JetBrains Mono", monospace;

  --radius:      12px;
  --radius-sm:   8px;
  --radius-pill: 999px;
  --transition:  0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--navy);
  color: var(--ink);
  font-family: var(--body);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* -------- selection & scrollbar -------- */

::selection { background: var(--turf); color: var(--navy); }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-dim); }

/* ============================================================
   TOPBAR
   ============================================================ */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel) 0%, var(--navy) 100%);
  position: sticky;
  top: 0;
  z-index: 100;
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.topbar__mark {
  background: linear-gradient(135deg, var(--turf) 0%, var(--turf-bright) 100%);
  color: var(--navy);
  width: 44px;
  height: 44px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px var(--turf-glow), 0 4px 12px rgba(0,0,0,0.3);
}

.topbar__brand h1 {
  font-family: var(--display);
  font-weight: 700;
  font-size: 24px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--ink) 0%, var(--turf-bright) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.topbar__brand p {
  font-size: 12px;
  color: var(--ink-dim);
  letter-spacing: 0.02em;
}

.topbar__match {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 7px;
  text-align: right;
}

.provider-badge {
  display: inline-flex;
  align-items: center;
  width: max-content;
  padding: 4px 10px;
  border: 1px solid rgba(74, 222, 128, 0.35);
  border-radius: var(--radius-pill);
  background: rgba(34, 197, 94, 0.1);
  color: var(--turf-bright);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.match-info {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}

.match-teams {
  font-family: var(--display);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.match-status {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--turf-bright);
  display: flex;
  align-items: center;
  gap: 6px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--turf-bright);
  box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.6);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.5); }
  50% { box-shadow: 0 0 0 8px rgba(74, 222, 128, 0); }
}

/* ============================================================
   TABS
   ============================================================ */

.tabs {
  display: flex;
  gap: 2px;
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  background: var(--navy-mid);
  position: sticky;
  top: 77px;
  z-index: 99;
}

.tabs::-webkit-scrollbar { display: none; }

.tab {
  background: none;
  border: none;
  color: var(--ink-dim);
  font-family: var(--body);
  font-weight: 600;
  font-size: 13px;
  padding: 14px 16px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition), border-color var(--transition);
  position: relative;
}

.tab svg {
  opacity: 0.6;
  transition: opacity var(--transition);
}

.tab:hover { color: var(--ink-mid); }
.tab:hover svg { opacity: 0.8; }

.tab.is-active {
  color: var(--turf-bright);
  border-bottom-color: var(--turf-bright);
}

.tab.is-active svg { opacity: 1; stroke: var(--turf-bright); }

.tab:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--steel);
  outline-offset: 2px;
}

/* ============================================================
   PANELS
   ============================================================ */

.panels {
  max-width: 920px;
  margin: 0 auto;
  padding: 32px 24px 80px;
}

.panel { display: none; }
.panel.is-active {
  display: block;
  animation: panelIn 0.35s ease;
}

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

.panel__intro { margin-bottom: 24px; }

.panel__intro h2 {
  font-family: var(--display);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 6px;
  background: linear-gradient(135deg, var(--ink) 30%, var(--turf-bright) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.panel__intro p {
  color: var(--ink-dim);
  max-width: 65ch;
  font-size: 14px;
}

.intro-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 14px;
}

.last-updated {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-dim);
}

/* ============================================================
   SHARED UI: BUTTONS, INPUTS, CHIPS
   ============================================================ */

select, input[type="text"], textarea {
  background: var(--panel-alt);
  border: 1px solid var(--line);
  color: var(--ink);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-family: var(--body);
  font-size: 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

select:focus, input[type="text"]:focus, textarea:focus {
  border-color: var(--turf);
  box-shadow: 0 0 0 3px var(--turf-glow);
  outline: none;
}

.btn-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  font-family: var(--body);
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
  background: var(--panel-alt);
  color: var(--ink);
}

.btn-action:hover {
  border-color: var(--turf);
  color: var(--turf-bright);
  box-shadow: 0 0 16px var(--turf-glow);
}

.btn-action--primary {
  background: linear-gradient(135deg, var(--turf) 0%, var(--turf-bright) 100%);
  color: var(--navy);
  border: none;
  font-weight: 700;
}

.btn-action--primary:hover {
  box-shadow: 0 4px 24px var(--turf-glow);
  transform: translateY(-1px);
  color: var(--navy);
}

.btn-action--secondary {
  background: var(--panel-alt);
  color: var(--ink-mid);
  border: 1px solid var(--line);
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }

.chip {
  background: var(--panel-alt);
  border: 1px solid var(--line);
  color: var(--ink-dim);
  border-radius: var(--radius-pill);
  padding: 8px 14px;
  font-size: 12px;
  cursor: pointer;
  font-family: var(--body);
  transition: all var(--transition);
}

.chip:hover {
  color: var(--turf-bright);
  border-color: var(--turf);
  background: var(--turf-glow);
  transform: translateY(-1px);
}

.chip--sm { padding: 5px 12px; font-size: 11px; }

/* ============================================================
   CHAT (shared between assistant + volunteer)
   ============================================================ */

.assistant__controls, .volunteer__role-select {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 13px;
  color: var(--ink-dim);
  flex-wrap: wrap;
}

.chat {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-height: 200px;
  max-height: 380px;
  overflow-y: auto;
  padding: 16px;
  margin-bottom: 12px;
}

.msg { margin-bottom: 14px; max-width: 85%; }
.msg--user { margin-left: auto; text-align: right; }

.msg__bubble {
  display: inline-block;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  line-height: 1.5;
}

.msg--user .msg__bubble {
  background: linear-gradient(135deg, var(--turf) 0%, var(--turf-bright) 100%);
  color: var(--navy);
  font-weight: 500;
  border-bottom-right-radius: 4px;
}

.msg--bot .msg__bubble {
  background: var(--panel-alt);
  border: 1px solid var(--line);
  border-bottom-left-radius: 4px;
}

.msg--bot .msg__label {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--turf-bright);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.chat__input { display: flex; gap: 8px; }
.chat__input input { flex: 1; }

.chat__input button {
  background: linear-gradient(135deg, var(--turf) 0%, var(--turf-bright) 100%);
  color: var(--navy);
  border: none;
  border-radius: var(--radius-sm);
  width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition);
}

.chat__input button:hover {
  box-shadow: 0 4px 16px var(--turf-glow);
  transform: translateY(-1px);
}

/* Typing animation */
.typing-dots {
  display: inline-block;
  position: relative;
  width: 6px;
  height: 6px;
  margin: 0 14px;
  border-radius: 50%;
  background: var(--turf-bright);
  vertical-align: middle;
  animation: typingDotPulse 1s ease-in-out infinite;
}

.typing-dots::before,
.typing-dots::after {
  content: "";
  position: absolute;
  top: 0;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--turf-bright);
  animation: typingDotPulse 1s ease-in-out infinite;
}

.typing-dots::before {
  left: -10px;
  animation-delay: -0.2s;
}

.typing-dots::after {
  left: 10px;
  animation-delay: 0.2s;
}

@keyframes typingDotPulse {
  0%, 80%, 100% {
    opacity: 0.35;
    transform: translateY(0);
  }
  40% {
    opacity: 1;
    transform: translateY(-3px);
  }
}

/* ============================================================
   CROWD PULSE
   ============================================================ */

.crowd-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.pulse-section { display: flex; flex-direction: column; gap: 20px; }

.pulse { display: flex; flex-direction: column; gap: 10px; }

.pulse__row {
  display: grid;
  grid-template-columns: 120px 1fr 55px;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  background: var(--panel);
  border: 1px solid var(--line);
  transition: all var(--transition);
}

.pulse__row:hover { border-color: var(--line-light); }

.pulse__gate {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-dim);
}

.pulse__gate strong {
  color: var(--ink);
  font-size: 14px;
  display: block;
  font-family: var(--body);
  font-weight: 600;
}

.pulse__track {
  background: var(--navy);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  height: 16px;
  overflow: hidden;
}

.pulse__fill {
  height: 100%;
  border-radius: var(--radius-pill);
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  background: linear-gradient(90deg, var(--turf-dim), var(--turf));
  position: relative;
}

.pulse__fill::after {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  height: 100%;
  width: 30px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.15));
  border-radius: var(--radius-pill);
}

.pulse__fill.busy {
  background: linear-gradient(90deg, #b45309, var(--amber));
}

.pulse__fill.critical {
  background: linear-gradient(90deg, #b91c1c, var(--red));
  animation: criticalPulse 2s ease-in-out infinite;
}

@keyframes criticalPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.75; }
}

.pulse__pct {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 500;
  text-align: right;
  color: var(--ink-mid);
}

/* Summary stats */
.crowd-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.stat-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
  transition: all var(--transition);
}

.stat-card:hover {
  border-color: var(--turf);
  box-shadow: 0 0 20px var(--turf-glow);
}

.stat-value {
  display: block;
  font-family: var(--display);
  font-size: 28px;
  font-weight: 700;
  color: var(--turf-bright);
}

.stat-label {
  display: block;
  font-size: 11px;
  color: var(--ink-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 2px;
}

/* Advisory */
.advisory {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--turf-bright);
  border-radius: var(--radius);
  padding: 18px 20px;
}

.advisory__header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.advisory__header svg { stroke: var(--turf-bright); }

.advisory h3 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--turf-bright);
  margin: 0;
}

.advisory__text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-mid);
}

/* ============================================================
   ACCESSIBILITY
   ============================================================ */

.access textarea {
  width: 100%;
  resize: vertical;
  margin-bottom: 14px;
  min-height: 100px;
}

.access__samples {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.access__samples-label {
  font-size: 12px;
  color: var(--ink-dim);
  font-weight: 500;
}

.access__controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.access__controls-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.access__controls label {
  font-size: 13px;
  color: var(--ink-dim);
}

.access__result {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--steel);
  border-radius: var(--radius);
  padding: 18px 20px;
  animation: panelIn 0.3s ease;
}

.access__result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.access__result h3 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--steel);
  margin: 0;
}

#access-output {
  font-size: 15px;
  line-height: 1.7;
}

/* ============================================================
   SUSTAINABILITY
   ============================================================ */

.transit-quick-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
  margin-bottom: 24px;
}

.transit-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.transit-card:hover {
  border-color: var(--line-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

.transit-icon {
  font-size: 24px;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--panel-alt);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.transit-detail strong {
  display: block;
  font-size: 13px;
  color: var(--ink);
}

.transit-detail span {
  font-size: 11px;
  color: var(--ink-dim);
}

.sustain__row {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 14px;
  margin-bottom: 16px;
}

.sustain__row label {
  display: block;
  font-size: 12px;
  color: var(--ink-dim);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 500;
}

.sustain__row input, .sustain__row select { width: 100%; }

.sustain__result {
  margin-top: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  padding: 18px 20px;
  animation: panelIn 0.3s ease;
}

.sustain__result h3 {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--amber);
  margin: 0 0 8px;
}

#sustain-output {
  font-size: 14px;
  line-height: 1.7;
}

/* ============================================================
   STADIUM MAP
   ============================================================ */

.map-container {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 20px;
  align-items: start;
}

.stadium-svg {
  width: 100%;
  max-width: 600px;
  border-radius: var(--radius);
  background: var(--panel);
  border: 1px solid var(--line);
  padding: 16px;
}

.gate-circle {
  fill: var(--panel-alt);
  stroke: var(--line-light);
  stroke-width: 2;
  cursor: pointer;
  transition: all var(--transition);
}

.gate-marker:hover .gate-circle,
.gate-marker:focus .gate-circle {
  fill: var(--turf-glow);
  stroke: var(--turf);
  filter: drop-shadow(0 0 8px var(--turf-glow));
}

.gate-marker.active .gate-circle {
  fill: var(--turf);
  stroke: var(--turf-bright);
  filter: drop-shadow(0 0 12px var(--turf-glow));
}

.gate-marker.status-busy .gate-circle { fill: var(--amber-dim); stroke: var(--amber); }
.gate-marker.status-critical .gate-circle { fill: var(--red-dim); stroke: var(--red); }

.gate-letter {
  fill: var(--ink);
  font-family: var(--display);
  font-size: 14px;
  font-weight: 700;
  pointer-events: none;
}

.gate-marker.active .gate-letter { fill: var(--navy); }

.gate-sublabel {
  fill: var(--ink-dim);
  font-family: var(--mono);
  font-size: 7px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  pointer-events: none;
}

.field-label {
  fill: var(--ink-dim);
  font-family: var(--display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.field-sublabel {
  fill: var(--ink-dim);
  font-family: var(--mono);
  font-size: 9px;
  opacity: 0.6;
}

.map-info {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px;
  min-height: 200px;
}

.map-info__hint {
  color: var(--ink-dim);
  font-size: 14px;
  text-align: center;
  padding: 40px 0;
}

.map-info__detail h4 {
  font-family: var(--display);
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}

.map-info__detail .gate-status-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.gate-status-badge.clear  { background: var(--turf-glow); color: var(--turf-bright); }
.gate-status-badge.busy   { background: var(--amber-dim); color: var(--amber); }
.gate-status-badge.critical { background: var(--red-dim); color: var(--red); }

.map-info__detail ul {
  list-style: none;
  padding: 0;
}

.map-info__detail li {
  font-size: 13px;
  color: var(--ink-mid);
  padding: 6px 0;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.map-info__detail li:last-child { border: none; }

/* ============================================================
   VOLUNTEER
   ============================================================ */

.volunteer__role-select {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin-bottom: 16px;
}

/* ============================================================
   FOOTER
   ============================================================ */

.foot {
  text-align: center;
  padding: 28px 24px;
  border-top: 1px solid var(--line);
  background: var(--navy-mid);
}

.foot__badges {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.badge {
  font-family: var(--mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--panel-alt);
  border: 1px solid var(--line);
  color: var(--ink-dim);
}

.foot p {
  color: var(--ink-dim);
  font-size: 11px;
  margin-top: 6px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 16px;
  }

  .topbar__match { align-self: flex-end; }
  .match-teams { font-size: 13px; }

  .tabs { padding: 0 12px; top: 110px; }
  .tab { padding: 12px 12px; font-size: 12px; }
  .tab svg { display: none; }

  .panels { padding: 20px 16px 60px; }
  .panel__intro h2 { font-size: 24px; }

  .sustain__row { grid-template-columns: 1fr; }
  .map-container { grid-template-columns: 1fr; }
  .crowd-summary { grid-template-columns: 1fr; }
  .transit-quick-info { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  .dot { animation: none; }
  .panel.is-active { animation: none; }
  .pulse__fill { transition: none; }
  .pulse__fill.critical { animation: none; }
  * { transition-duration: 0.01ms !important; }
}