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

:root {
  --accent: #c41e3a;
  --panel-bg: rgba(10,30,15,0.92);
  --text-color: #e8f5e0;
  --scene-bg: #0d2818;
  --panel-width: 210px;
  --right-width: 270px;
  --font: 'Segoe UI', system-ui, sans-serif;
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--scene-bg);
  color: var(--text-color);
  font-family: var(--font);
}

/* ── Layout ──────────────────────────────────────────────────────────── */
#app {
  display: grid;
  grid-template-columns: var(--panel-width) 1fr var(--right-width);
  grid-template-rows: 100vh;
  height: 100vh;
}

/* ── Panels ──────────────────────────────────────────────────────────── */
.panel {
  background: var(--panel-bg);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  padding: 20px 14px;
  gap: 18px;
  overflow-y: auto;
  border: 1px solid rgba(255,255,255,0.07);
  transition: background 0.4s ease;
}

#left-panel { border-right: none; border-radius: 0 0 0 0; }
#right-panel { border-left: none; }

.panel-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  text-align: center;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  transition: color 0.4s ease;
}

/* ── Dice Buttons ────────────────────────────────────────────────────── */
.dice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.die-btn {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 12px 6px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  color: var(--text-color);
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: background 0.15s, border-color 0.15s, transform 0.1s;
  user-select: none;
}

.die-btn:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--accent);
  transform: translateY(-1px);
}

.die-btn:active { transform: translateY(0); }

.die-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.die-icon svg {
  width: 100%;
  height: 100%;
  fill: var(--accent);
  transition: fill 0.4s ease;
}

.badge {
  position: absolute;
  top: 4px;
  right: 4px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  width: 18px;
  height: 18px;
  font-size: 0.65rem;
  font-weight: 700;
  display: none;
  align-items: center;
  justify-content: center;
  transition: background 0.4s ease;
}

/* ── Themes ──────────────────────────────────────────────────────────── */
.section-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 2px;
}

.theme-row {
  display: flex;
  gap: 8px;
  justify-content: center;
  flex-wrap: wrap;
}

.theme-swatch {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.2s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.theme-swatch:hover { transform: scale(1.15); }
.theme-swatch.active { border-color: #fff; transform: scale(1.1); }

/* ── Clear button ────────────────────────────────────────────────────── */
#clear-btn {
  background: none;
  border: none;
  color: rgba(255,255,255,0.35);
  font-size: 0.75rem;
  cursor: pointer;
  text-align: center;
  padding: 4px;
  transition: color 0.15s;
  font-family: var(--font);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
#clear-btn:hover { color: var(--accent); }

/* ── Pool display ────────────────────────────────────────────────────── */
#pool-display {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
  text-align: center;
  min-height: 1.2em;
  word-break: break-word;
  line-height: 1.5;
}

/* ── Canvas area ─────────────────────────────────────────────────────── */
#canvas-wrap {
  position: relative;
  overflow: hidden;
}

#canvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* ── Roll button ─────────────────────────────────────────────────────── */
#roll-btn {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  padding: 14px 48px;
  background: var(--accent);
  border: none;
  border-radius: 40px;
  color: #fff;
  font-family: var(--font);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
  transition: background 0.4s ease, transform 0.15s, box-shadow 0.15s, opacity 0.2s;
}
#roll-btn:hover:not(:disabled) {
  transform: translateX(-50%) translateY(-2px);
  box-shadow: 0 8px 28px rgba(0,0,0,0.6);
}
#roll-btn:active:not(:disabled) { transform: translateX(-50%) translateY(0); }
#roll-btn:disabled { opacity: 0.35; cursor: default; }
#roll-btn.rolling { animation: pulse 0.6s infinite alternate; }

@keyframes pulse {
  from { box-shadow: 0 4px 20px rgba(0,0,0,0.5); }
  to   { box-shadow: 0 4px 30px color-mix(in srgb, var(--accent) 60%, transparent); }
}

/* ── Right panel ─────────────────────────────────────────────────────── */
.results-header {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.35);
  margin-bottom: 4px;
}

#results-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 60px;
}

.result-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  transition: background 0.3s, border-color 0.3s;
}

.result-card.nat-max {
  background: rgba(255,200,0,0.12);
  border-color: #ffd700;
  animation: natmax 0.6s ease forwards;
}
.result-card.nat-one {
  background: rgba(220,50,50,0.12);
  border-color: #cc3333;
  animation: natone 0.6s ease forwards;
}

@keyframes natmax {
  0%   { box-shadow: 0 0 0 0 rgba(255,215,0,0.6); }
  60%  { box-shadow: 0 0 0 12px rgba(255,215,0,0); }
  100% { box-shadow: none; }
}
@keyframes natone {
  0%   { box-shadow: 0 0 0 0 rgba(200,50,50,0.6); }
  60%  { box-shadow: 0 0 0 12px rgba(200,50,50,0); }
  100% { box-shadow: none; }
}

.result-type {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}

.result-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  transition: color 0.4s ease;
}

.nat-max .result-value { color: #ffd700; }
.nat-one .result-value { color: #ff4444; }

.result-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: rgba(255,255,255,0.04);
  border-top: 1px solid rgba(255,255,255,0.12);
  margin-top: 4px;
  border-radius: 0 0 10px 10px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
}

.total-value {
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--text-color);
}

/* ── History ─────────────────────────────────────────────────────────── */
#history-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 200px;
  overflow-y: auto;
  padding-right: 2px;
}

#history-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.74rem;
  padding: 5px 10px;
  background: rgba(255,255,255,0.03);
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.06);
}

.h-roll { color: rgba(255,255,255,0.4); }
.h-result { color: var(--text-color); font-weight: 600; }

/* ── Scrollbar ───────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 4px; }

/* ── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 860px) {
  :root { --panel-width: 0px; --right-width: 0px; }

  #app {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr auto;
    position: relative;
  }

  #left-panel, #right-panel {
    position: fixed;
    top: 0;
    bottom: 0;
    width: 220px;
    z-index: 20;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  #right-panel {
    left: auto;
    right: 0;
    transform: translateX(100%);
  }

  #left-panel.open  { transform: translateX(0); }
  #right-panel.open { transform: translateX(0); }

  #canvas-wrap { grid-column: 1; grid-row: 1; }

  .mobile-bar {
    display: flex !important;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 10;
    background: var(--panel-bg);
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 8px 16px;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
  }
}

.mobile-bar { display: none; }

/* ── Mobile close button (hidden on desktop) ──────────────────────── */
.panel-close-btn {
  display: none;
  position: absolute;
  top: 12px;
  right: 12px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  width: 30px;
  height: 30px;
  color: var(--text-color);
  font-size: 0.8rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  line-height: 1;
  z-index: 1;
}
.panel-close-btn:hover { background: rgba(255,255,255,0.18); }

/* ── Mobile backdrop ─────────────────────────────────────────────── */
#mobile-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 15;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
#mobile-backdrop.visible {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 860px) {
  #mobile-backdrop { display: block; }
  .panel-close-btn { display: flex; }
  .panel { position: relative; }
}

.mobile-btn {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px;
  color: var(--text-color);
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 8px 14px;
  cursor: pointer;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}