:root {
  color-scheme: dark;
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.4;
  --accent: #f6ad55;
  --accent-strong: #f7c948;
  --bg: #030712;
  --bg-secondary: #0b1120;
  --surface: rgba(17, 24, 39, 0.85);
  --surface-border: rgba(148, 163, 184, 0.2);
  --text: #e2e8f0;
  --text-muted: #94a3b8;
}

@font-face {
  font-family: "Elven Common Speak";
  src: url("../fonts/Elvencommonspeak-0WXz.ttf") format("truetype");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at 20% -10%, rgba(79, 70, 229, 0.2), transparent 55%),
    radial-gradient(circle at 80% 0%, rgba(236, 72, 153, 0.15), transparent 60%),
    linear-gradient(#030712, #0f172a 65%, #020617 100%);
  color: var(--text);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

.intro-screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 1);
  color: #f8fafc;
  z-index: 999;
  opacity: 1;
  transition:
    opacity 2600ms cubic-bezier(0.4, 0, 0.2, 1),
    visibility 0s linear 2600ms;
  pointer-events: auto;
}

.intro-screen.intro-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.intro-content {
  text-align: center;
  padding: 2.5rem 3rem;
  border-radius: 1.75rem;
  background: transparent;
  border: none;
  box-shadow: none;
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 2200ms ease,
    transform 2600ms cubic-bezier(0.19, 1, 0.22, 1);
}

.intro-screen.intro-hidden .intro-content {
  opacity: 0;
  transform: translateY(-40px);
}

.intro-greeting {
  margin: 0 0 0.75rem;
  font-size: clamp(3.3rem, 7vw, 2.4rem);
  letter-spacing: 0.08em;
  color: var(--accent-strong);
  font-family: "Elven Common Speak", "Luminari", "Papyrus", fantasy;
}

.intro-message {
  margin: 0;
  font-size: clamp(1.1rem, 6vw, 2rem);
  letter-spacing: 0.03em;
  color: var(--text);
  font-family: "Elven Common Speak", "Luminari", "Papyrus", cursive;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(2px 2px at 10% 20%, rgba(255, 255, 255, 0.6) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 35% 65%, rgba(255, 255, 255, 0.45) 50%, transparent 50%),
    radial-gradient(2px 2px at 75% 30%, rgba(255, 255, 255, 0.5) 50%, transparent 50%),
    radial-gradient(1.5px 1.5px at 55% 85%, rgba(255, 255, 255, 0.35) 50%, transparent 50%);
  opacity: 0.6;
  z-index: 0;
}

.app-header {
  position: relative;
  z-index: 1;
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(30, 41, 59, 0.85));
  border-bottom: 1px solid var(--surface-border);
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: 0 10px 35px rgba(15, 23, 42, 0.65);
}

.app-header h1 {
  margin: 0;
  font-size: clamp(1.35rem, 4vw, 1.9rem);
  letter-spacing: 0.02em;
  color: var(--accent-strong);
}

.logo-icon {
  width: clamp(48px, 12vw, 60px);
  height: clamp(48px, 12vw, 60px);
  display: inline-flex;
  justify-content: center;
  align-items: center;
  background: radial-gradient(circle at 30% 30%, rgba(247, 205, 72, 0.45), transparent 65%);
  border-radius: 18px;
  box-shadow: 0 0 20px rgba(246, 173, 85, 0.35);
}

.logo-icon svg {
  width: 80%;
  height: 80%;
}

.title-group {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.tagline {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

.app-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1rem;
}

.control-panel {
  position: relative;
  z-index: 1;
  background: var(--surface);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(10px);
  border-radius: 1.25rem;
  padding: 1.25rem;
  box-shadow: 0 35px 60px rgba(3, 7, 18, 0.55);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.control-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.distance-value {
  font-variant-numeric: tabular-nums;
  color: var(--accent-strong);
  font-size: 1rem;
}

.distance-slider {
  accent-color: var(--accent);
  width: 100%;
}

.distance-controls {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.distance-input-group {
  display: flex;
  align-items: center;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(246, 173, 85, 0.25);
  border-radius: 0.85rem;
  padding: 0.3rem 0.75rem;
  min-width: 120px;
  box-shadow: inset 0 0 12px rgba(8, 47, 73, 0.25);
}

.controls-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1 1 auto;
}

.save-circle-btn {
  margin-left: auto;
  padding: 0.65rem 1.05rem;
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--accent);
  color: #1f2933;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
  box-shadow:
    0 12px 24px rgba(246, 173, 85, 0.3),
    inset 0 0 0 1px rgba(31, 41, 55, 0.35);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.save-circle-btn:active {
  transform: scale(0.97);
}


.distance-input {
  flex: 1;
  font: inherit;
  border: none;
  background: transparent;
  padding: 0.25rem 0;
  width: 100%;
  text-align: right;
  color: var(--text);
  appearance: textfield;
}

.distance-input:focus {
  outline: none;
  color: var(--accent-strong);
}

.distance-suffix {
  margin-left: 0.35rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
}

.help-text {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.map-container {
  position: relative;
  flex: 1;
}

.map {
  position: relative;
  width: 100%;
  min-height: 320px;
  height: min(60vh, 520px);
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid rgba(248, 189, 73, 0.2);
  box-shadow: 0 25px 55px rgba(2, 6, 23, 0.8);
}

.map-container .map-action {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.85rem 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  background: var(--accent);
  color: #1f2933;
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
  z-index: 500;
  pointer-events: auto;
  box-shadow:
    0 18px 35px rgba(246, 173, 85, 0.35),
    inset 0 0 0 1px rgba(31, 41, 55, 0.35);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.locate-btn {
  right: 1.25rem;
  bottom: 1.25rem;
}

.locate-btn:active {
  transform: scale(0.97);
}

.map-container .map-action:disabled {
  opacity: 0.65;
  cursor: wait;
  box-shadow: none;
}

.leaflet-marker-icon.treasure-marker {
  filter: drop-shadow(0 10px 18px rgba(15, 23, 42, 0.75));
  transform-origin: center bottom;
  transition: transform 160ms ease-out;
}

.leaflet-marker-icon.treasure-marker:hover {
  transform: translateY(-3px) scale(1.03);
}

.saved-circles {
  position: relative;
  z-index: 1;
  margin-top: 1.5rem;
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(148, 163, 184, 0.2);
  border-radius: 1.25rem;
  padding: 1.25rem;
  box-shadow: 0 20px 45px rgba(2, 6, 23, 0.55);
  backdrop-filter: blur(12px);
}

.saved-title {
  margin: 0 0 1rem;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-strong);
}

.saved-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.saved-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 0.9rem;
  border-radius: 0.9rem;
  background: rgba(8, 15, 33, 0.68);
  border: 1px solid rgba(107, 114, 128, 0.2);
  box-shadow: inset 0 0 0 1px rgba(14, 42, 71, 0.2);
}

.saved-item-content {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.95rem;
}

.saved-item-title {
  margin: 0;
  font-weight: 600;
  color: var(--text);
}

.saved-item-meta {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.saved-item-actions {
  display: flex;
  gap: 0.5rem;
}

.saved-item-btn {
  appearance: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem 0.7rem;
  border-radius: 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(148, 163, 184, 0.2);
  color: var(--text);
  transition: transform 120ms ease, background 120ms ease;
}

.saved-item-btn:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 2px;
}

.saved-item-btn:hover {
  transform: translateY(-1px);
  background: rgba(148, 163, 184, 0.35);
}

.saved-item-btn.primary {
  background: var(--accent);
  color: #111827;
}

.saved-item-btn.primary:hover {
  background: #f6c15c;
}

.saved-empty {
  margin: 0;
  padding: 0.5rem 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  text-align: center;
}

@media (min-width: 768px) {
  .app-body {
    flex-direction: row;
  }

  .control-panel {
    flex: 0 0 320px;
    align-self: flex-start;
  }

  .map {
    height: 75vh;
  }
}