:root {
  --bg_dark: #0a0e14;
  --bg_panel: rgba(16, 23, 34, 0.85);
  --neon_green: #00ff66;
  --neon_yellow: #ffea00;
  --neon_cyan: #00f0ff;
  --neon_pink: #ff00aa;
  --neon_purple: #a855f7;
  --neon_orange: #ff9900;
  --text_light: #e0f2fe;
  --font_code: 'Fira Code', monospace;
  --font_display: 'Orbitron', sans-serif;
}

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

body {
  background-color: var(--bg_dark);
  color: var(--text_light);
  font-family: var(--font_code);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

#app_container {
  width: 100vw;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: radial-gradient(circle at center, #111a28 0%, #06090e 100%);
  position: relative;
}

/* Header HUD */
#game_hud_top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 24px;
  background: var(--bg_panel);
  border-bottom: 2px solid var(--neon_green);
  box-shadow: 0 0 15px rgba(0, 255, 102, 0.2);
  backdrop-filter: blur(8px);
}

.hud_title {
  font-family: var(--font_display);
  font-size: 1.4rem;
  color: var(--neon_green);
  text-shadow: 0 0 10px var(--neon_green);
  letter-spacing: 2px;
}

.clickable_title {
  cursor: pointer;
  transition: text-shadow 0.2s ease, transform 0.2s ease;
}
.clickable_title:hover {
  text-shadow: 0 0 15px var(--neon_cyan);
  transform: scale(1.02);
}

.hud_section_right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.hud_metric_box {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}

.hud_label {
  font-size: 0.65rem;
  color: var(--neon_cyan);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hud_value {
  font-family: var(--font_display);
  font-size: 1.1rem;
  color: var(--neon_yellow);
  text-shadow: 0 0 8px var(--neon_yellow);
}

.hud_metric_divider {
  color: rgba(255, 255, 255, 0.2);
}

/* Main Viewport & Grid Layout */
#game_viewport {
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 20px;
  position: relative;
  gap: 16px;
}

.cyber_aside {
  width: 260px;
  height: 580px;
  background: rgba(10, 14, 20, 0.8);
  border: 1px solid rgba(0, 240, 255, 0.3);
  border-radius: 8px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(6px);
}

.panel_header {
  font-family: var(--font_display);
  font-size: 0.75rem;
  color: var(--neon_cyan);
  border-bottom: 1px solid rgba(0, 240, 255, 0.3);
  padding-bottom: 6px;
  margin-bottom: 6px;
  letter-spacing: 1px;
}

#terminal_filters_container {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 0.6rem;
  padding-bottom: 6px;
  margin-bottom: 6px;
  border-bottom: 1px solid rgba(0, 240, 255, 0.2);
}

.filter_label {
  display: flex;
  align-items: center;
  gap: 3px;
  cursor: pointer;
  color: var(--neon_cyan);
}

.filter_label input {
  accent-color: var(--neon_cyan);
  cursor: pointer;
}

#terminal_log_messages {
  flex: 1;
  overflow-y: auto;
  font-size: 0.7rem;
  line-height: 1.5;
  color: #94a3b8;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.log_entry {
  word-break: break-word;
}
.log_entry.detect { color: #ff6600; }
.log_entry.kill { color: var(--neon_green); }
.log_entry.damage { color: var(--neon_pink); }
.log_entry.evolution { color: var(--neon_yellow); }
.log_entry.tower_attack { color: #38bdf8; }

#tower_details_content {
  flex: 1;
  display: flex;
  flex-direction: column;
  font-size: 0.75rem;
}

.panel_placeholder {
  color: #64748b;
  font-size: 0.7rem;
  margin-top: 20px;
  font-style: italic;
}

#grid_wrapper {
  position: relative;
  border: 2px solid rgba(0, 255, 102, 0.4);
  box-shadow: 0 0 25px rgba(0, 255, 102, 0.15);
  border-radius: 8px;
  background: #06090e;
}

#grid_canvas {
  display: block;
  border-radius: 6px;
}

/* CPU Core HUD Overlay */
#cpu_core_hud {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
}

#cpu_hp_indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: rgba(10, 14, 20, 0.85);
  padding: 4px 12px;
  border-radius: 4px;
  border: 1px solid var(--neon_cyan);
}

#hud_cpu_hp_val {
  font-family: var(--font_display);
  font-size: 0.8rem;
  color: var(--neon_cyan);
}

#hud_cpu_hp_track {
  width: 80px;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 2px;
}

#hud_cpu_hp_bar {
  height: 100%;
  background: var(--neon_cyan);
  box-shadow: 0 0 6px var(--neon_cyan);
  transition: width 0.3s ease;
}

/* Shield */
#hud_shield_container {
  width: 100px;
  height: 8px;
  background: rgba(0, 240, 255, 0.2);
  border-radius: 4px;
  margin-bottom: 4px;
  overflow: hidden;
}

#hud_shield_bar {
  height: 100%;
  background: var(--neon_cyan);
  box-shadow: 0 0 8px var(--neon_cyan);
}

/* Dock Bottom */
#game_dock_bottom {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  padding: 10px 20px;
  background: var(--bg_panel);
  border-top: 2px solid var(--neon_cyan);
  backdrop-filter: blur(8px);
  gap: 16px;
  min-height: 155px;
}

.dock_section_title {
  font-family: var(--font_display);
  font-size: 0.7rem;
  color: var(--neon_green);
  margin-bottom: 6px;
  letter-spacing: 1px;
}

#player_hand_section {
  flex: 1;
  display: flex;
  flex-direction: column;
}

#hand_cards_container {
  display: flex;
  gap: 10px;
  flex: 1;
}

.card_item {
  width: 155px;
  background: rgba(16, 23, 34, 0.9);
  border: 2px solid var(--neon_green);
  border-radius: 6px;
  padding: 6px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}

.card_item:hover {
  transform: translateY(-6px);
  box-shadow: 0 0 15px rgba(0, 255, 102, 0.4);
}

.card_item.selected {
  transform: translateY(-10px);
  box-shadow: 0 0 20px var(--neon_yellow);
  border-color: var(--neon_yellow);
}

.card_header {
  font-weight: 700;
  font-size: 0.7rem;
  color: var(--text_light);
  padding: 4px;
  border-radius: 3px;
  text-align: center;
}

.card_desc {
  font-size: 0.62rem;
  color: #a0aec0;
  margin-top: 4px;
  line-height: 1.3;
}

.card_desc strong {
  color: var(--neon_yellow);
  font-weight: bold;
}

.card_specs_list {
  font-size: 0.6rem;
  color: #cbd5e1;
  margin-top: 4px;
  background: rgba(0, 0, 0, 0.4);
  padding: 4px;
  border-radius: 4px;
}

.card_spec_row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 2px;
}

.btn_discard_card {
  position: absolute;
  top: 4px;
  right: 4px;
  background: transparent;
  border: none;
  color: var(--neon_pink);
  font-size: 0.7rem;
  cursor: pointer;
}

#dock_sidebar_right {
  display: flex;
  gap: 16px;
}

#waiting_card_section {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 140px;
}

.card_waiting_facedown {
  width: 90px;
  height: 75px;
  background: repeating-linear-gradient(
    45deg,
    #0d1520,
    #0d1520 10px,
    #152233 10px,
    #152233 20px
  );
  border: 2px dashed var(--neon_cyan);
  border-radius: 6px;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  font-size: 0.65rem;
  color: var(--neon_cyan);
}

.cooldown_bar_wrapper {
  width: 90px;
  height: 75px;
  background: rgba(10, 14, 20, 0.9);
  border: 1px solid var(--neon_yellow);
  border-radius: 6px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 6px;
}

.cooldown_text {
  font-size: 0.6rem;
  color: var(--neon_yellow);
  margin-bottom: 4px;
  text-align: center;
}

.cooldown_track {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
}

.cooldown_fill {
  height: 100%;
  background: var(--neon_yellow);
  box-shadow: 0 0 6px var(--neon_yellow);
}

#mode_toggles_container {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 6px;
  width: 100%;
}

.toggle_btn {
  font-size: 0.65rem;
  padding: 4px 8px;
  border-radius: 4px;
}

.toggle_btn.active {
  background: var(--neon_cyan);
  color: #000;
  box-shadow: 0 0 10px var(--neon_cyan);
}

#stats_panel_section {
  width: 220px;
  background: rgba(10, 14, 20, 0.7);
  padding: 10px;
  border-radius: 6px;
  border: 1px solid rgba(0, 240, 255, 0.3);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.stat_row {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  margin-bottom: 4px;
}

.stat_name {
  color: #8899a6;
}

.stat_val {
  color: var(--neon_yellow);
  font-weight: 700;
}

/* Modals */
.modal_overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(6, 9, 14, 0.85);
  backdrop-filter: blur(10px);
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  z-index: 100;
}

.modal_overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.cyber_panel {
  background: var(--bg_panel);
  border: 2px solid var(--neon_green);
  box-shadow: 0 0 30px rgba(0, 255, 102, 0.3);
  border-radius: 12px;
  padding: 32px;
  max-width: 500px;
  width: 90%;
  text-align: center;
}

/* Chroma Shift Style About Modal Frame */
.about_panel_frame {
  border: 2px solid var(--neon_pink);
  box-shadow: 0 0 25px rgba(255, 0, 170, 0.4);
  padding: 24px;
}

.about_modal_header {
  font-family: var(--font_display);
  font-size: 1.4rem;
  color: var(--neon_pink);
  text-shadow: 0 0 10px var(--neon_pink);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.about_inner_box {
  background: rgba(10, 12, 20, 0.95);
  border: 1px solid rgba(168, 85, 247, 0.4);
  border-radius: 10px;
  padding: 20px 24px;
  margin-bottom: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  text-align: left;
}

.about_row {
  display: flex;
  align-items: center;
  font-size: 0.9rem;
  font-family: var(--font_code);
}

.about_icon {
  margin-right: 12px;
  font-size: 1.1rem;
}

.about_label {
  color: var(--neon_cyan);
  font-weight: 700;
  width: 100px;
}

.about_separator {
  color: #ffffff;
  margin-right: 12px;
  font-weight: 700;
}

.about_value {
  font-weight: 700;
}

.cyan_val { color: var(--neon_cyan); }
.yellow_val { color: var(--neon_yellow); }
.magenta_val { color: var(--neon_pink); }
.orange_val { color: var(--neon_orange); }
.underlined_val { text-decoration: underline; }

.full_width_btn {
  width: 100%;
  background: var(--neon_cyan);
  color: #000;
  font-weight: 800;
  border-color: var(--neon_cyan);
  box-shadow: 0 0 15px var(--neon_cyan);
  padding: 12px;
}

.full_width_btn:hover {
  background: #ffffff;
  color: #000;
  box-shadow: 0 0 20px #ffffff;
}

.danger_border {
  border-color: var(--neon_pink);
  box-shadow: 0 0 30px rgba(255, 0, 85, 0.4);
}

.glitch_title {
  font-family: var(--font_display);
  font-size: 2.2rem;
  color: var(--neon_green);
  text-shadow: 0 0 15px var(--neon_green);
  margin-bottom: 8px;
}

.danger_title {
  font-family: var(--font_display);
  font-size: 1.6rem;
  color: var(--neon_pink);
  text-shadow: 0 0 15px var(--neon_pink);
  margin-bottom: 12px;
}

.subtitle {
  font-size: 0.85rem;
  color: var(--neon_cyan);
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.menu_buttons_stack {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cyber_button {
  font-family: var(--font_display);
  font-size: 0.85rem;
  padding: 10px 16px;
  background: rgba(16, 23, 34, 0.8);
  border: 1px solid var(--neon_cyan);
  color: var(--neon_cyan);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
  letter-spacing: 1px;
}

.cyber_button:hover {
  background: var(--neon_cyan);
  color: #000;
  box-shadow: 0 0 15px var(--neon_cyan);
}

.cyber_button.primary {
  border-color: var(--neon_green);
  color: var(--neon_green);
}

.cyber_button.primary:hover {
  background: var(--neon_green);
  color: #000;
  box-shadow: 0 0 15px var(--neon_green);
}

.cyber_button.danger {
  border-color: var(--neon_pink);
  color: var(--neon_pink);
}

.cyber_button.danger:hover {
  background: var(--neon_pink);
  color: #fff;
  box-shadow: 0 0 15px var(--neon_pink);
}

.modal_text_body {
  text-align: left;
  font-size: 0.85rem;
  line-height: 1.6;
  color: #cbd5e1;
  margin: 20px 0;
  background: rgba(0, 0, 0, 0.3);
  padding: 16px;
  border-radius: 6px;
}

.option_row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 16px 0;
}

.cyber_select {
  background: #0a0e14;
  color: var(--neon_green);
  border: 1px solid var(--neon_green);
  padding: 6px 12px;
  border-radius: 4px;
  font-family: var(--font_code);
}

/* Meta Upgrades styling */
#meta_upgrades_list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 20px 0;
  text-align: left;
}

.meta_points_display {
  font-family: var(--font_display);
  font-size: 0.9rem;
  color: var(--neon_yellow);
  margin-bottom: 10px;
  text-align: center;
}

.meta_upgrade_item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(10, 14, 20, 0.8);
  border: 1px solid rgba(0, 240, 255, 0.3);
  padding: 10px 14px;
  border-radius: 6px;
}

.meta_upgrade_info {
  display: flex;
  flex-direction: column;
}

.meta_upgrade_name {
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--neon_cyan);
}

.meta_upgrade_lvl {
  font-size: 0.7rem;
  color: #94a3b8;
}