/**
 * LandLords: Epos — Tech Tree Panel Styles
 */

.tt-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  z-index: var(--z-modal-overlay, 1000);
  display: flex;
  align-items: center;
  justify-content: center;
  animation: ttFadeIn 0.2s ease;
}

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

.tt-modal {
  width: 780px;
  max-width: 90vw;
  height: 560px;
  max-height: 80vh;
  background: var(--color-bg-dark, #0f0e0a);
  border: 2px solid var(--color-gold-accent-line);
  border-radius: var(--radius-8, 8px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  font-family: var(--font-body, 'Literata', serif);
  color: var(--color-text, #F5DEB3);
}

/* Header */
.tt-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-8, 8px);
  padding: var(--spacing-12, 12px) var(--spacing-16, 16px);
  border-bottom: 1px solid var(--color-gold-dim);
  background: rgba(255, 215, 0, 0.04);
  flex-shrink: 0;
}

.tt-title-icon { font-size: 22px; line-height: 1; }

.tt-title {
  font-family: var(--font-heading, 'Cinzel', serif);
  font-size: var(--text-16, 16px);
  color: var(--color-accent, #FFD700);
  letter-spacing: 1px;
  flex: 1;
}

.tt-rp {
  display: flex;
  align-items: center;
  gap: var(--spacing-4, 4px);
  background: rgba(33, 150, 243, 0.15);
  border: 1px solid rgba(33, 150, 243, 0.3);
  border-radius: var(--radius-4, 4px);
  padding: var(--spacing-4, 4px) var(--spacing-8, 8px);
  font-family: var(--font-mono, 'Fira Code', monospace);
  font-size: var(--text-12, 12px);
}

.tt-rp-icon { font-size: 14px; }

.tt-rp-value {
  color: var(--color-info, #2196F3);
  font-weight: var(--font-bold);
}

.tt-rp-hint {
  color: var(--color-text-muted, #888);
  font-size: var(--text-10, 10px);
}

.tt-close {
  background: transparent;
  border: 1px solid var(--color-gold-dim);
  border-radius: var(--radius-4, 4px);
  color: var(--color-text-muted, #888);
  font-size: 18px;
  width: 32px;
  height: 32px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.tt-close:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(255, 215, 0, 0.1);
}

/* Body */
.tt-body {
  display: flex;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

.tt-left {
  width: 60%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--color-gold-dim);
  padding: var(--spacing-12, 12px);
  gap: var(--spacing-12, 12px);
  overflow-y: auto;
}

.tt-right {
  width: 40%;
  min-width: 0;
  padding: var(--spacing-16, 16px);
  overflow-y: auto;
  background: rgba(0, 0, 0, 0.2);
}

/* Tree tabs */
.tt-tree-tabs {
  display: flex;
  gap: var(--spacing-4, 4px);
  flex-shrink: 0;
}

.tt-tree-tab {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-4, 4px);
  padding: var(--spacing-8, 8px) var(--spacing-4, 4px);
  background: rgba(255, 215, 0, 0.06);
  border: 1px solid var(--color-gold-dim);
  border-radius: var(--radius-4, 4px);
  color: var(--color-text-muted, #888);
  font-family: var(--font-heading, 'Cinzel', serif);
  font-size: var(--text-10, 10px);
  letter-spacing: 0.5px;
  cursor: pointer;
  transition: all 0.15s ease;
  border-bottom: 2px solid transparent;
}

.tt-tree-tab:hover {
  background: rgba(255, 215, 0, 0.12);
  color: var(--color-text, #F5DEB3);
}

.tt-tree-tab.active {
  background: rgba(255, 215, 0, 0.15);
  border-bottom-color: var(--color-accent, #FFD700);
  color: var(--color-accent, #FFD700);
}

.tt-tab-icon { font-size: 14px; }

/* Tiers */
.tt-tiers {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-12, 12px);
  overflow-y: auto;
}

.tt-tier-label {
  font-family: var(--font-heading, 'Cinzel', serif);
  font-size: var(--text-9, 9px);
  color: var(--color-text-muted, #888);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-4, 4px);
}

.tt-tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-8, 8px);
}

/* Cards */
.tt-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 2px;
  padding: var(--spacing-8, 8px);
  background: var(--color-surface, #252525);
  border: 1px solid var(--color-gold-dim);
  border-radius: var(--radius-6, 6px);
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
}

.tt-card:hover {
  border-color: var(--color-accent, #FFD700);
  background: var(--color-surface-hover);
  box-shadow: 0 0 12px rgba(255, 215, 0, 0.15);
}

.tt-card.researched {
  border-color: var(--color-success, #4CAF50);
  background: rgba(76, 175, 80, 0.08);
}

.tt-card.active {
  border-color: var(--color-info, #2196F3);
  background: rgba(33, 150, 243, 0.08);
}

.tt-card.locked {
  opacity: 0.4;
  cursor: not-allowed;
}

.tt-card-icon {
  font-size: 24px;
  line-height: 1;
}

.tt-card-name {
  font-family: var(--font-heading, 'Cinzel', serif);
  font-size: var(--text-10, 10px);
  color: var(--color-text, #F5DEB3);
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.tt-card-cost {
  font-family: var(--font-mono, 'Fira Code', monospace);
  font-size: var(--text-9, 9px);
  color: var(--color-info, #2196F3);
  margin-top: 2px;
}

.tt-card-status {
  position: absolute;
  top: 2px;
  right: 4px;
  font-size: 12px;
}

/* Progress bar on card */
.tt-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: rgba(0, 0, 0, 0.4);
  border-bottom-left-radius: var(--radius-6, 6px);
  border-bottom-right-radius: var(--radius-6, 6px);
  overflow: hidden;
}

.tt-progress-bar {
  height: 100%;
  background: var(--color-info, #2196F3);
  transition: width 0.3s ease;
}

/* Detail panel */
.tt-detail {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-12, 12px);
  animation: ttSlideIn 0.2s ease;
}

@keyframes ttSlideIn {
  from { opacity: 0; transform: translateX(10px); }
  to   { opacity: 1; transform: translateX(0); }
}

.tt-detail-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: var(--spacing-12, 12px);
  color: var(--color-text-muted, #888);
  text-align: center;
}

.tt-ph-icon { font-size: 48px; opacity: 0.3; }

.tt-detail-header {
  text-align: center;
  padding-bottom: var(--spacing-8, 8px);
  border-bottom: 1px solid var(--color-gold-dim);
}

.tt-dh-icon { font-size: 36px; display: block; margin-bottom: var(--spacing-4, 4px); }

.tt-dh-title {
  font-family: var(--font-heading, 'Cinzel', serif);
  font-size: var(--text-14, 14px);
  color: var(--color-accent, #FFD700);
  letter-spacing: 1px;
}

.tt-dh-tree {
  font-size: var(--text-10, 10px);
  color: var(--color-text-muted, #888);
  font-style: italic;
  margin-top: 2px;
}

/* Detail sections */
.tt-detail-section {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-gold-dim);
  border-radius: var(--radius-4, 4px);
  padding: var(--spacing-8, 8px) var(--spacing-12, 12px);
}

.tt-ds-title {
  font-family: var(--font-heading, 'Cinzel', serif);
  font-size: var(--text-10, 10px);
  color: var(--color-accent, #FFD700);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: var(--spacing-4, 4px);
  border-bottom: 1px solid var(--color-gold-dim);
  padding-bottom: 2px;
}

.tt-ds-text {
  font-size: var(--text-12, 12px);
  color: var(--color-text, #F5DEB3);
  line-height: 1.5;
}

.tt-ds-effect {
  font-size: var(--text-12, 12px);
  color: var(--color-success, #4CAF50);
  font-family: var(--font-mono, 'Fira Code', monospace);
}

.tt-ds-row {
  display: flex;
  justify-content: space-between;
  padding: 2px 0;
  font-size: var(--text-11, 11px);
}

.tt-ds-row span:first-child { color: var(--color-text-muted, #888); }
.tt-ds-row span:last-child { color: var(--color-text, #F5DEB3); font-family: var(--font-mono, 'Fira Code', monospace); }

/* Buttons */
.tt-btn {
  width: 100%;
  padding: var(--spacing-12, 12px);
  border-radius: var(--radius-4, 4px);
  font-family: var(--font-heading, 'Cinzel', serif);
  font-size: var(--text-11, 11px);
  letter-spacing: 1px;
  cursor: pointer;
  transition: all 0.15s ease;
  text-transform: uppercase;
  text-align: center;
  border: 1px solid;
}

.tt-btn-research {
  background: rgba(33, 150, 243, 0.15);
  border-color: var(--color-info, #2196F3);
  color: var(--color-info, #2196F3);
}

.tt-btn-research:hover {
  background: rgba(33, 150, 243, 0.25);
  box-shadow: 0 0 12px rgba(33, 150, 243, 0.3);
}

.tt-btn-done {
  background: rgba(76, 175, 80, 0.1);
  border-color: var(--color-success, #4CAF50);
  color: var(--color-success, #4CAF50);
  cursor: default;
}

.tt-btn-active {
  background: rgba(33, 150, 243, 0.1);
  border-color: var(--color-info, #2196F3);
  color: var(--color-info, #2196F3);
  cursor: default;
  animation: ttPulse 2s ease-in-out infinite;
}

@keyframes ttPulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

.tt-btn-locked {
  background: rgba(244, 67, 54, 0.1);
  border-color: var(--color-error, #F44336);
  color: var(--color-error, #F44336);
  cursor: not-allowed;
}

.tt-empty-tier {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--color-text-muted, #888);
  font-style: italic;
  font-size: var(--text-11, 11px);
  padding: var(--spacing-8, 8px);
}

/* Responsive */
@media (max-width: 768px) {
  .tt-modal { width: 95vw; height: 85vh; }
  .tt-body { flex-direction: column; }
  .tt-left, .tt-right { width: 100%; border-right: none; border-bottom: 1px solid var(--color-gold-dim); }
  .tt-tier-grid { grid-template-columns: repeat(2, 1fr); }
}