/* ============================================================================
 * SCREENS CSS — styly pro herní fullscreen overlays (Člen 1)
 * ----------------------------------------------------------------------------
 * Styly pro všechny fullscreen overlay obrazovky řízené z src/ui/screens.js:
 *
 *   - #upgrade-screen  — Wave End upgrade picker (3 karty + lock progress bar)
 *   - #wave-countdown  — text overlay s odpočtem do další vlny
 *   - #pause-screen    — pause menu (Resume / Save / Restart / Quit)
 *   - #gameover-screen — Game Over (statistiky + tlačítka)
 *   - #victory-screen  — Protocol Success (Campaign konec)
 *   - #name-entry-modal — Survival smrt: jméno do leaderboardu
 *   - #leaderboard-screen — top 10 výsledků
 *   - #damage-flash    — celoobrazovkové červené flash při zásahu
 *
 * Upgrade card rarity barvy:
 *   .rarity-common — neutral white border, no glow
 *   .rarity-rare   — blue border + subtle glow
 *   .rarity-epic   — purple border + animated glow (vizuálně láká)
 *
 * Anti-misclick lock (.locked):
 *   Po objevení upgrade screen je 1.5 s progress bar který "dovaří".
 *   Tlačítka jsou pointer-events: none, dokud nedoběhne.
 *   Bez toho by si hráč mohl omylem vybrat upgrade hned po wave end.
 *
 * Pozn.: ~430 řádků v sekcích — pro úpravy najít podle screen ID.
 * ========================================================================== */

/* ── Upgrade screen ── */
#upgrade-screen {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(5,8,12,0.82);
  z-index: 1200; font-family: monospace;
}

/* ── Wave countdown ── */
#wave-countdown {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  background: rgba(0,0,0,0.72);
  border: 1px solid rgba(0,229,255,0.4);
  border-radius: 8px;
  padding: 12px 28px;
  color: #00e5ff;
  z-index: 1150; font-family: monospace;
  font-size: 22px; font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  pointer-events: none;
  text-shadow: 0 0 18px rgba(0,229,255,0.55);
  white-space: nowrap;
}

/* ── Upgrade panel ── */
.upgrade-panel {
  width: min(820px, calc(100vw - 32px));
  border: 2px solid rgba(0,229,255,0.35);
  border-radius: 12px;
  background: rgba(10,13,18,0.98);
  padding: 28px 24px 24px;
}
.upgrade-wave-header { text-align: center; margin-bottom: 20px; }
.upgrade-wave-title { color: #00e5ff; font-size: 20px; letter-spacing: 4px; text-transform: uppercase; margin-bottom: 6px; }
.upgrade-wave-sub   { color: #39ff14; font-size: 13px; letter-spacing: 2px; margin-bottom: 14px; }
.upgrade-wave-stats { display: flex; gap: 24px; justify-content: center; }
.upgrade-wave-stat  { color: #9bb6c4; font-size: 12px; letter-spacing: 1px; }
.upgrade-wave-stat strong { color: #fff; font-weight: 700; margin-right: 4px; }

.upgrade-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
.upgrade-card {
  min-height: 150px; color: #d9f7ff; background: transparent;
  border: 1px solid #24485a; border-radius: 8px;
  padding: 20px 14px; text-align: center;
  cursor: pointer; font-family: monospace;
  display: flex; flex-direction: column; align-items: center;
  transition: border-color 0.15s, background 0.15s;
}
.upgrade-card-icon {
  min-height: 32px;
  font-size: 28px; margin-bottom: 8px;
  display: flex; align-items: center; justify-content: center;
}
.upgrade-card-icon .weapon-glyph {
  width: 56px; height: 32px;
  filter: drop-shadow(0 0 10px rgba(229,168,0,0.35));
}
.upgrade-card-rarity { font-size: 9px; letter-spacing: 3px; text-transform: uppercase; margin-bottom: 6px; }
.upgrade-card strong { display: block; font-size: 13px; letter-spacing: 2px; text-transform: uppercase; margin-bottom: 8px; }
.upgrade-card span   { color: #bfd4df; font-size: 11px; line-height: 1.6; }

.upgrade-card.rarity-common { border-color: rgba(0,229,255,0.25); }
.upgrade-card.rarity-common .upgrade-card-rarity { color: #3a6a7a; }
.upgrade-card.rarity-common strong { color: #00e5ff; }
.upgrade-card.rarity-common:hover { border-color: #00e5ff; background: rgba(0,229,255,0.06); }

.upgrade-card.rarity-rare { border-color: rgba(57,255,20,0.25); }
.upgrade-card.rarity-rare .upgrade-card-rarity { color: #39ff14; }
.upgrade-card.rarity-rare strong { color: #39ff14; }
.upgrade-card.rarity-rare:hover { border-color: #39ff14; background: rgba(57,255,20,0.06); }

.upgrade-card.rarity-epic { border-color: rgba(229,168,0,0.35); }
.upgrade-card.rarity-epic .upgrade-card-rarity { color: #e5a800; }
.upgrade-card.rarity-epic strong { color: #e5a800; }
.upgrade-card.rarity-epic:hover { border-color: #e5a800; background: rgba(229,168,0,0.07); }

@media (max-width: 720px) {
  .upgrade-grid { grid-template-columns: 1fr; }
}

/* Lockout: prvních ~1.5s jsou karty neaktivní — zabrání prokliknutí
   zbylou střelou, která zabila vlnu. */
.upgrade-panel.locked .upgrade-card {
  pointer-events: none;
  opacity: 0.45;
  filter: grayscale(0.6);
}
.upgrade-lock-bar {
  position: relative;
  height: 4px; background: rgba(0,229,255,0.12);
  margin: 14px 0 4px;
  overflow: hidden;
}
.upgrade-lock-bar::after {
  content: '';
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 100%; background: #00e5ff;
  transform-origin: left center;
  animation: upgrade-lock-fill var(--lock-dur, 1500ms) linear forwards;
}
.upgrade-panel:not(.locked) .upgrade-lock-bar { display: none; }
.upgrade-lock-label {
  color: #5fa6c5; font-size: 11px; letter-spacing: 3px;
  text-transform: uppercase; margin-top: 4px;
}
.upgrade-panel:not(.locked) .upgrade-lock-label { display: none; }
@keyframes upgrade-lock-fill {
  from { transform: scaleX(1); }
  to   { transform: scaleX(0); }
}

/* ── Shared fullscreen overlay base ── */
.fs-overlay {
  position: fixed; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  z-index: 1300; font-family: monospace;
}
.fs-title {
  font-size: 52px; font-weight: 900; letter-spacing: 8px;
  text-transform: uppercase; margin: 0 0 6px;
  line-height: 1;
}
.fs-subtitle {
  font-size: 13px; letter-spacing: 6px;
  text-transform: uppercase; margin-bottom: 28px;
}
.fs-divider {
  width: 50px; height: 2px; margin-bottom: 28px;
}
.fs-hint {
  font-size: 13px; line-height: 1.7; margin-bottom: 32px;
  text-align: center; max-width: 400px;
}
/* Stat grid — centered */
.fs-stat-card {
  padding: 22px 28px;
  border-radius: 0 8px 8px 0;
  margin-bottom: 28px;
  width: min(640px, calc(100vw - 80px));
}
.fs-stat-card-title {
  font-size: 12px; font-weight: 700;
  letter-spacing: 4px; text-transform: uppercase;
  margin-bottom: 16px; text-align: center;
}
.fs-stat-grid {
  display: flex; gap: 12px; flex-wrap: wrap; justify-content: center;
}
.fs-stat-box {
  flex: 1; min-width: 100px; max-width: 160px;
  padding: 16px 18px; text-align: center;
  border-radius: 8px;
}
.fs-stat-val {
  font-size: 28px; font-weight: 700; letter-spacing: 1px;
}
.fs-stat-val-text {
  font-size: 18px; letter-spacing: 0;
}
.fs-stat-label {
  font-size: 11px; letter-spacing: 2px; text-transform: uppercase; margin-top: 6px;
}
.btn-locked .fs-btn-area,
.btn-locked .ne-btn-area,
.btn-locked button {
  pointer-events: none;
}
/* Buttons — centered column */
.fs-btn-area {
  display: flex; flex-direction: column; gap: 12px;
  width: 280px;
}
.fs-btn-primary {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  padding: 16px 0;
  font-family: monospace; font-size: 15px; font-weight: 700; letter-spacing: 3px;
  text-transform: uppercase; border-radius: 8px; cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s, transform 0.08s;
}
.fs-btn-primary:hover { transform: translateY(-1px); }
.fs-btn-primary:active { transform: translateY(1px); }
.fs-btn-secondary {
  padding: 14px 0;
  font-family: monospace; font-size: 13px; letter-spacing: 2px;
  text-transform: uppercase; border-radius: 8px; cursor: pointer;
  text-align: center;
  transition: all 0.15s;
}
.fs-btn-secondary:hover { transform: translateY(-1px); }
@media (max-width: 600px) {
  .fs-title { font-size: 36px; letter-spacing: 5px; }
  .fs-stat-card { width: calc(100vw - 48px); }
  .fs-btn-area { width: 240px; }
}

/* ── Pause screen — cyan theme ── */
#pause-screen { background: rgba(5,8,12,0.7); }
#pause-screen .fs-title {
  color: #fff;
  text-shadow: 0 0 40px rgba(0,229,255,0.3);
}
#pause-screen .fs-subtitle { color: rgba(0,229,255,0.45); }
#pause-screen .fs-divider { background: linear-gradient(90deg, #00e5ff, transparent); }
#pause-screen .fs-hint { color: rgba(255,255,255,0.4); }
#pause-screen .fs-stat-card {
  border-left: 3px solid rgba(0,229,255,0.4);
  background: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, rgba(0,229,255,0.02) 100%);
}
#pause-screen .fs-stat-card-title { color: #00e5ff; }
#pause-screen .fs-stat-card p { color: rgba(255,255,255,0.5); font-size: 13px; line-height: 1.6; margin: 0; text-align: center; }
#pause-screen .fs-stat-card p strong { color: #00e5ff; }
#pause-screen .fs-stat-box {
  background: rgba(0,229,255,0.04);
  border: 1px solid rgba(0,229,255,0.15);
}
#pause-screen .fs-stat-val { color: #00e5ff; }
#pause-screen .fs-stat-label { color: #8aa3b8; }
#pause-screen .fs-btn-primary {
  background: #39ff14; color: #080b10; border: 2px solid #39ff14;
  box-shadow: 0 0 20px rgba(57,255,20,0.25);
}
#pause-screen .fs-btn-primary:hover { background: #55ff33; box-shadow: 0 0 32px rgba(57,255,20,0.45); }
#pause-screen .fs-btn-secondary {
  background: rgba(255,23,68,0.08); color: #ff7a86;
  border: 1px solid rgba(255,90,110,0.45);
}
#pause-screen .fs-btn-secondary:hover {
  color: #ffd4d8; background: rgba(255,23,68,0.16);
  border-color: rgba(255,120,135,0.75);
}
.fs-btn-save {
  padding: 14px 0;
  font-family: monospace; font-size: 13px; letter-spacing: 2px;
  text-transform: uppercase; border-radius: 8px; cursor: pointer;
  text-align: center; transition: all 0.15s;
  background: rgba(0,229,255,0.08); color: #9cefff;
  border: 1px solid rgba(0,229,255,0.35);
}
.fs-btn-save:hover {
  color: #fff; background: rgba(0,229,255,0.14);
  border-color: rgba(0,229,255,0.65);
}
.save-feedback {
  color: #39ff14; font-family: monospace; font-size: 12px;
  letter-spacing: 2px; text-align: center;
  margin-top: 10px;
  animation: save-flash 0.4s ease-out;
}
@keyframes save-flash {
  0% { opacity: 0; transform: translateY(4px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* ── Game Over screen — red theme ── */
#gameover-screen { background: rgba(5,2,2,0.7); }
#gameover-screen .fs-title {
  color: #ff1744;
  text-shadow: 0 0 50px rgba(255,23,68,0.5);
}
#gameover-screen .fs-subtitle { color: rgba(255,23,68,0.5); }
#gameover-screen .fs-divider { background: linear-gradient(90deg, #ff1744, transparent); }
#gameover-screen .fs-hint { color: rgba(255,120,135,0.5); }
#gameover-screen .fs-stat-card {
  border-left: 3px solid rgba(255,23,68,0.4);
  background: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, rgba(255,23,68,0.02) 100%);
}
#gameover-screen .fs-stat-card-title { color: #ff1744; }
#gameover-screen .fs-stat-box {
  background: rgba(255,23,68,0.04);
  border: 1px solid rgba(255,23,68,0.15);
}
#gameover-screen .fs-stat-val { color: #ff6b7a; }
#gameover-screen .fs-stat-label { color: #c98a8f; }
#gameover-screen .fs-btn-primary {
  background: #00e5ff; color: #080b10; border: 2px solid #00e5ff;
  box-shadow: 0 0 20px rgba(0,229,255,0.25);
}
#gameover-screen .fs-btn-primary:hover { background: #33eeff; box-shadow: 0 0 32px rgba(0,229,255,0.45); }
#gameover-screen .fs-btn-secondary {
  background: rgba(0,229,255,0.08); color: #9cefff;
  border: 1px solid rgba(0,229,255,0.35);
}
#gameover-screen .fs-btn-secondary:hover {
  color: #fff; background: rgba(0,229,255,0.14);
  border-color: rgba(0,229,255,0.65);
}

/* ── Victory screen — green theme ── */
#victory-screen { background: rgba(2,5,2,0.7); }
#victory-screen .fs-title {
  color: #39ff14;
  text-shadow: 0 0 50px rgba(57,255,20,0.5);
}
#victory-screen .fs-subtitle { color: rgba(57,255,20,0.5); }
#victory-screen .fs-divider { background: linear-gradient(90deg, #39ff14, transparent); }
#victory-screen .fs-hint { color: rgba(57,255,20,0.4); }
#victory-screen .fs-stat-card {
  border-left: 3px solid rgba(57,255,20,0.4);
  background: linear-gradient(135deg, rgba(255,255,255,0.03) 0%, rgba(57,255,20,0.02) 100%);
}
#victory-screen .fs-stat-card-title { color: #39ff14; }
#victory-screen .fs-stat-box {
  background: rgba(57,255,20,0.04);
  border: 1px solid rgba(57,255,20,0.15);
}
#victory-screen .fs-stat-val { color: #7aff6b; }
#victory-screen .fs-stat-label { color: #9fca9a; }
#victory-screen .fs-btn-primary {
  background: #39ff14; color: #080b10; border: 2px solid #39ff14;
  box-shadow: 0 0 20px rgba(57,255,20,0.25);
}
#victory-screen .fs-btn-primary:hover { background: #55ff33; box-shadow: 0 0 32px rgba(57,255,20,0.45); }


/* ── Name-entry modal ── */
#name-entry-modal {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(5,8,12,0.92);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  z-index: 1400; font-family: monospace;
}
.ne-inner {
  width: min(460px, calc(100vw - 48px));
  border: 2px solid rgba(0,229,255,0.4);
  border-radius: 12px;
  background: rgba(10,13,18,0.98);
  padding: 36px 32px 28px;
  text-align: center;
}
.ne-title {
  color: #00e5ff; font-size: 22px; font-weight: 900;
  letter-spacing: 5px; text-transform: uppercase; margin-bottom: 6px;
}
.ne-subtitle { color: rgba(255,255,255,0.35); font-size: 11px; letter-spacing: 3px; margin-bottom: 24px; }
.ne-stats {
  display: flex; gap: 16px; justify-content: center; margin-bottom: 28px; flex-wrap: wrap;
}
.ne-stat { background: rgba(0,229,255,0.06); border: 1px solid rgba(0,229,255,0.15); border-radius: 8px; padding: 10px 16px; }
.ne-stat-val { color: #fff; font-size: 20px; font-weight: 700; }
.ne-stat-label { color: rgba(0,229,255,0.6); font-size: 10px; letter-spacing: 2px; text-transform: uppercase; margin-top: 2px; }
.ne-input-wrap { margin-bottom: 20px; }
.ne-input-label { color: rgba(255,255,255,0.5); font-size: 11px; letter-spacing: 3px; text-transform: uppercase; margin-bottom: 8px; }
#player-name-input {
  width: 100%; padding: 12px 16px; box-sizing: border-box;
  background: rgba(0,229,255,0.06); border: 2px solid rgba(0,229,255,0.35);
  border-radius: 8px; color: #fff; font-family: monospace; font-size: 18px;
  text-align: center; letter-spacing: 2px; outline: none;
  transition: border-color 0.2s;
}
#player-name-input:focus { border-color: #00e5ff; }
#player-name-input::placeholder { color: rgba(255,255,255,0.2); }
.ne-btn {
  width: 100%; padding: 14px 0;
  background: #00e5ff; color: #080b10; border: none; border-radius: 8px;
  font-family: monospace; font-size: 14px; font-weight: 900;
  letter-spacing: 4px; text-transform: uppercase; cursor: pointer;
  transition: background 0.15s, box-shadow 0.15s;
  box-shadow: 0 0 20px rgba(0,229,255,0.25);
}
.ne-btn:hover { background: #33ecff; box-shadow: 0 0 32px rgba(0,229,255,0.45); }

/* ── Leaderboard screen ── */
#leaderboard-screen {
  position: fixed; inset: 0;
  display: flex; align-items: center; justify-content: center;
  background: rgba(5,8,12,0.92);
  backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
  z-index: 1400; font-family: monospace;
}
.lb-inner {
  width: min(700px, calc(100vw - 48px));
  border: 2px solid rgba(0,229,255,0.35);
  border-radius: 12px;
  background: rgba(10,13,18,0.98);
  padding: 32px 28px 24px;
}
.lb-title {
  color: #00e5ff; font-size: 22px; font-weight: 900;
  letter-spacing: 5px; text-transform: uppercase; margin-bottom: 4px;
}
.lb-subtitle { color: rgba(255,255,255,0.3); font-size: 10px; letter-spacing: 4px; margin-bottom: 24px; }
.lb-table { width: 100%; border-collapse: collapse; }
.lb-table th {
  color: rgba(0,229,255,0.6); font-size: 10px; letter-spacing: 3px;
  text-transform: uppercase; padding: 0 12px 12px; text-align: left;
  border-bottom: 1px solid rgba(0,229,255,0.15);
}
.lb-table th:first-child { width: 48px; text-align: center; }
.lb-table td { padding: 10px 12px; color: #c8d8e8; font-size: 14px; border-bottom: 1px solid rgba(255,255,255,0.05); }
.lb-table td:first-child { text-align: center; }
.lb-row-gold td { color: #ffd600; }
.lb-row-top td { color: #c8d8e8; opacity: 0.85; }
.lb-rank { font-size: 16px; }
.lb-name { font-weight: 700; letter-spacing: 1px; }
.lb-score { color: #00e5ff !important; font-weight: 700; }
.lb-back-btn {
  margin-top: 20px; width: 100%; padding: 12px 0;
  background: transparent; border: 1px solid rgba(0,229,255,0.3);
  border-radius: 8px; color: #9cefff; font-family: monospace;
  font-size: 12px; letter-spacing: 4px; text-transform: uppercase;
  cursor: pointer; transition: all 0.15s;
}
.lb-back-btn:hover { background: rgba(0,229,255,0.08); border-color: rgba(0,229,255,0.6); color: #fff; }

/* ── Damage flash overlay ── */
#damage-flash {
  position: fixed; inset: 0;
  background: radial-gradient(ellipse at center, transparent 30%, rgba(255,0,0,0.45) 100%);
  pointer-events: none;
  z-index: 140;
  opacity: 0;
  transition: opacity 0.08s ease-in;
}
#damage-flash.active {
  opacity: 1;
  transition: none;
}