*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Segoe UI', system-ui, sans-serif;
  background: #1a1a2e;
  color: #e0e0e0;
  min-height: 100vh;
}

/* ===== LANDING PAGE ===== */

.landing {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.landing-card {
  background: #16213e;
  border-radius: 12px;
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 400px;
  text-align: center;
}

.landing-card h1 {
  font-size: 2rem;
  margin-bottom: 0.25rem;
  color: #ffd700;
}

.landing-card .subtitle {
  color: #888;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

.landing-card label {
  display: block;
  text-align: left;
  font-size: 0.85rem;
  color: #aaa;
  margin-bottom: 0.3rem;
}

.landing-card input {
  width: 100%;
  padding: 0.7rem 1rem;
  border: 2px solid #2a2a4a;
  border-radius: 8px;
  background: #0f0f23;
  color: #e0e0e0;
  font-size: 1rem;
  margin-bottom: 1rem;
  outline: none;
  transition: border-color 0.2s;
}

.landing-card input:focus {
  border-color: #ffd700;
}

.landing-card input::placeholder {
  color: #555;
}

.landing-card button {
  width: 100%;
  padding: 0.75rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s, opacity 0.2s;
}

.landing-card button:active {
  transform: scale(0.97);
}

.btn-create {
  background: #ffd700;
  color: #1a1a2e;
  margin-bottom: 1.5rem;
}

.btn-create:hover { opacity: 0.9; }

.landing-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  color: #555;
  font-size: 0.85rem;
}

.landing-divider::before, .landing-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #2a2a4a;
}

.btn-join {
  background: #2a2a4a;
  color: #e0e0e0;
}

.btn-join:hover { background: #3a3a5a; }

.input-code {
  text-transform: uppercase;
  letter-spacing: 0.3em;
  text-align: center;
  font-weight: 700;
  font-size: 1.2rem !important;
}

.error-msg {
  color: #ff6b6b;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  min-height: 1.2em;
}

/* ===== SESSION PAGE ===== */

.session-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: #16213e;
  border-bottom: 1px solid #2a2a4a;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.session-code {
  font-weight: 700;
  font-size: 1.1rem;
  color: #ffd700;
  cursor: pointer;
  user-select: all;
}

.session-code:hover::after {
  content: ' (copiar)';
  font-size: 0.75rem;
  color: #888;
  font-weight: 400;
}

.player-list {
  font-size: 0.85rem;
  color: #aaa;
}

.session-main {
  display: grid;
  grid-template-columns: var(--left, 1fr) 6px var(--right, 1fr);
  gap: 0;
  height: calc(100vh - 50px);
}

/* Dice area */
.dice-area {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  gap: 1rem;
  min-width: 0;
}

.dice-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.die-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  cursor: pointer;
  color: #aaa;
  transition: transform 0.15s, color 0.15s;
  border-radius: 8px;
}

.die-btn:hover {
  transform: scale(1.15);
  color: #ffd700;
  background: rgba(255, 215, 0, 0.08);
}

.die-btn:active {
  transform: scale(0.95);
}

.dice-staging {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  justify-content: center;
  align-content: center;
  min-height: 100px;
  background: #0f0f23;
  border-radius: 12px;
  border: 2px dashed #2a2a4a;
  padding: 1rem;
  position: relative;
}

.dice-staging.drag-over {
  border-color: #ffd700;
  background-color: rgba(255, 215, 0, 0.05);
}

.dice-staging .placeholder {
  color: #444;
  font-size: 0.9rem;
}

.staged-die {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #ffd700;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.8));
  transition: transform 0.1s, opacity 0.15s;
  border-radius: 4px;
  padding: 2px;
}

.staged-die:hover {
  transform: scale(1.2);
  opacity: 0.7;
}

.dice-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

.dice-actions button {
  padding: 0.7rem 2rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.1s, opacity 0.2s;
}

.dice-actions button:active {
  transform: scale(0.96);
}

.btn-clear {
  background: #2a2a4a;
  color: #e0e0e0;
}

.btn-clear:hover { background: #3a3a5a; }

.btn-roll {
  background: #ffd700;
  color: #1a1a2e;
  min-width: 120px;
}

.btn-roll:hover { opacity: 0.9; }

.btn-roll:disabled {
  opacity: 0.4;
  cursor: default;
}

.btn-clear .shortcut,
.btn-roll .shortcut {
  font-size: 0.7rem;
  opacity: 0.6;
  margin-left: 0.4rem;
}

.btn-bg-clear {
  padding: 0.5rem 1rem;
  border: 1px solid #555;
  border-radius: 8px;
  font-size: 0.8rem;
  background: transparent;
  color: #aaa;
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

.btn-bg-clear:hover {
  border-color: #ff6b6b;
  color: #ff6b6b;
}

/* Resizable divider */
.divider {
  background: #2a2a4a;
  cursor: col-resize;
  position: relative;
  transition: background 0.15s;
}

.divider:hover,
.divider.active {
  background: #ffd700;
}

.divider::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: -4px;
  right: -4px;
}

/* Log area */
.log {
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.log-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #555;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.log-entries {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column-reverse;
}

.log-entry {
  padding: 0.6rem 0;
  border-bottom: 1px solid #1a1a2e;
  font-size: 0.9rem;
  line-height: 1.4;
  animation: fadeIn 0.3s;
}

.log-entry .name {
  font-weight: 700;
  color: #7ec8e3;
}

.log-entry .formula {
  color: #aaa;
}

.log-entry .results {
  font-weight: 700;
  color: #ffd700;
  font-size: 1rem;
}

.log-empty {
  color: #444;
  font-size: 0.85rem;
  text-align: center;
  padding: 2rem 0;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Connection banner */
.connection-banner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: #ff6b6b;
  color: #fff;
  text-align: center;
  padding: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 100;
  display: none;
}

.connection-banner.show { display: block; }

/* Toast notification */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  background: #16213e;
  border: 1px solid #ffd700;
  color: #ffd700;
  padding: 0.5rem 1.5rem;
  border-radius: 8px;
  font-size: 0.85rem;
  z-index: 100;
  animation: fadeIn 0.3s;
}

/* ===== RESPONSIVE (mobile) ===== */

@media (max-width: 768px) {
  .session-main {
    grid-template-columns: 1fr !important;
    grid-template-rows: var(--top, 1fr) 6px var(--bottom, 1fr);
    height: auto;
    min-height: calc(100vh - 50px);
  }

  .divider {
    cursor: row-resize;
  }

  .dice-area {
    padding: 0.75rem;
    gap: 0.75rem;
  }

  .die-btn {
    width: 48px;
    height: 48px;
  }

  .dice-staging {
    min-height: 80px;
  }

  .log {
    border-left: none;
    border-top: 1px solid #2a2a4a;
    max-height: 40vh;
    padding: 0.75rem;
  }

  .dice-actions button {
    padding: 0.6rem 1.5rem;
    font-size: 0.9rem;
  }

  .btn-clear .shortcut,
  .btn-roll .shortcut {
    display: none;
  }
}