/* --- CSS VARIABLES & RESET --- */
:root {
    --bg-color: #0b0b2a;
    --panel-bg: #10104a;
    --border-color: #4a90e2;
    --text-color: #ffffff;
    --accent-color: #ffd700;
    --hover-color: #2a2acc;
    --correct-color: #28a745;
    --wrong-color: #dc3545;
    --safe-color: #ffffff;
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: var(--font-main); user-select: none; }
body { background: radial-gradient(circle at center, #1b1b5e 0%, var(--bg-color) 100%); color: var(--text-color); min-height: 100vh; display: flex; align-items: center; justify-content: center; }

/* --- LAYOUT --- */
.app-container { width: 100%; max-width: 1200px; padding: 20px; display: grid; grid-template-columns: 1fr 300px; gap: 20px; }
@media (max-width: 900px) { .app-container { grid-template-columns: 1fr; } .money-ladder { order: -1; margin-bottom: 20px;} }

/* --- SCREENS --- */
.screen { display: none; flex-direction: column; align-items: center; justify-content: center; text-align: center; background: rgba(0,0,0,0.5); border: 2px solid var(--border-color); border-radius: 15px; padding: 40px; }
.screen.active { display: flex; animation: fadeIn 0.5s; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* --- TYPOGRAPHY & BUTTONS --- */
h1 { color: var(--accent-color); margin-bottom: 20px; text-transform: uppercase; letter-spacing: 2px; }
p { margin-bottom: 20px; font-size: 1.1rem; line-height: 1.5; }

.btn { background: var(--panel-bg); color: var(--text-color); border: 2px solid var(--border-color); padding: 15px 30px; border-radius: 30px; font-size: 1.2rem; cursor: pointer; transition: all 0.3s; font-weight: bold; }
.btn:hover:not(:disabled) { background: var(--hover-color); border-color: var(--accent-color); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent-color); color: #000; border-color: var(--accent-color); }
.btn-primary:hover:not(:disabled) { background: #e6c200; }
.btn-danger { background: var(--wrong-color); border-color: var(--wrong-color); }
.btn-danger:hover:not(:disabled) { background: #c82333; }
.btn-success { background: var(--correct-color); border-color: var(--correct-color); }

/* --- GAME UI --- */
.game-header { display: flex; justify-content: space-between; width: 100%; margin-bottom: 20px; flex-wrap: wrap; gap: 15px; }

/* Lifelines */
.lifelines { display: flex; gap: 15px; }
.lifeline { width: 60px; height: 40px; border-radius: 20px; background: var(--panel-bg); border: 2px solid var(--accent-color); color: var(--accent-color); font-weight: bold; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: 0.3s; }
.lifeline:hover:not(.used) { background: var(--accent-color); color: #000; }
.lifeline.used { opacity: 0.3; text-decoration: line-through; cursor: not-allowed; border-color: #555; color: #555; }

/* Question Box */
.question-container { background: var(--panel-bg); border: 2px solid var(--border-color); border-radius: 50px; padding: 30px; width: 100%; margin-bottom: 30px; position: relative; font-size: 1.3rem; min-height: 120px; display: flex; align-items: center; justify-content: center; text-align: center; }

/* Answers Grid */
.answers-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; width: 100%; }
@media (max-width: 600px) { .answers-grid { grid-template-columns: 1fr; } }

.answer-btn { background: var(--panel-bg); border: 2px solid var(--border-color); border-radius: 40px; padding: 15px 25px; text-align: left; font-size: 1.1rem; cursor: pointer; transition: 0.2s; position: relative; color: var(--text-color); display: flex; align-items: center; }
.answer-btn:hover:not(.locked):not(.disabled) { background: var(--hover-color); }
.answer-btn .letter { color: var(--accent-color); font-weight: bold; margin-right: 15px; font-size: 1.2rem; }

/* Answer States */
.answer-btn.selected { background: var(--accent-color); color: #000; border-color: #fff; }
.answer-btn.selected .letter { color: #000; }
.answer-btn.flashing { animation: flash 0.3s infinite alternate; }
.answer-btn.correct { background: var(--correct-color); color: #fff; border-color: #fff; }
.answer-btn.wrong { background: var(--wrong-color); color: #fff; border-color: #fff; }
.answer-btn.correct .letter, .answer-btn.wrong .letter { color: #fff; }
.answer-btn.hidden-5050 { visibility: hidden; }
.answer-btn.disabled { pointer-events: none; }

@keyframes flash { from { background: var(--accent-color); } to { background: #ff8c00; } }

/* Confirm Box */
.confirm-box { margin-top: 30px; display: none; gap: 15px; justify-content: center; align-items: center; }
.confirm-box p { margin: 0; color: var(--accent-color); font-weight: bold; font-size: 1.2rem; }

/* --- MONEY LADDER --- */
.money-ladder { background: var(--panel-bg); border: 2px solid var(--border-color); border-radius: 15px; padding: 20px; display: flex; flex-direction: column-reverse; }
.ladder-step { display: flex; justify-content: space-between; padding: 8px 15px; margin: 2px 0; border-radius: 5px; font-weight: bold; color: #888; transition: 0.3s; }
.ladder-step .step-num { width: 30px; }
.ladder-step.safe { color: var(--safe-color); }
.ladder-step.active { background: var(--accent-color); color: #000; transform: scale(1.05); }
.ladder-step.reached { color: var(--accent-color); }

/* --- MODALS --- */
.modal-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.8); display: none; align-items: center; justify-content: center; z-index: 1000; }
.modal { background: var(--panel-bg); border: 2px solid var(--accent-color); border-radius: 15px; padding: 30px; width: 90%; max-width: 400px; text-align: center; }
.chart-bar { display: flex; align-items: center; margin: 10px 0; gap: 10px; }
.chart-label { width: 30px; font-weight: bold; color: var(--accent-color); }
.chart-track { flex-grow: 1; background: #333; height: 20px; border-radius: 10px; overflow: hidden; }
.chart-fill { background: var(--border-color); height: 100%; width: 0%; transition: width 1s ease-out; }
.chart-pct { width: 50px; text-align: right; }