@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

:root {
    --color-primary: #0D47A1;
    --color-primary-light: #1565C0;
    --color-accent-gold: #FFD700;
    --color-accent-red: #DD0000;
    --color-accent-cyan: #00FFFF;
    --color-accent-green: #00CC44;
    --color-black: #000000;
    --color-white: #FFFFFF;
    --color-gray: #888888;
    --font-primary: 'Press Start 2P', monospace;
    --border-width: 4px;
    --border-radius: 8px;
    --shadow-default: 4px 4px 0px var(--color-black);
}

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

body {
    font-family: var(--font-primary);
    background: linear-gradient(180deg, var(--color-primary) 0%, #1565C0 50%, #1976D2 100%);
    min-height: 100vh;
    color: var(--color-white);
    overflow-x: hidden;
    padding: 16px;
}

/* Navigation */
.breadcrumb { max-width: 800px; margin: 0 auto 16px; }
.back-link {
    display: inline-block;
    color: var(--color-accent-gold);
    text-decoration: none;
    font-family: var(--font-primary);
    font-size: clamp(8px, 1.5vw, 12px);
    text-shadow: 2px 2px 0px var(--color-black);
}
.back-link:hover { color: var(--color-accent-cyan); }

/* Quiz Container */
.quiz-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 24px;
}

/* Header */
.quiz-header {
    text-align: center;
    margin-bottom: 32px;
}
.quiz-title {
    font-size: clamp(16px, 4vw, 28px);
    color: var(--color-accent-gold);
    text-shadow: 3px 3px 0px #AA6600, 4px 4px 0px var(--color-black);
    margin-bottom: 8px;
}
.quiz-subtitle {
    font-size: clamp(8px, 1.5vw, 12px);
    color: var(--color-accent-cyan);
    text-shadow: 2px 2px 0px var(--color-black);
}

/* Start Screen */
.start-screen {
    text-align: center;
    padding: 48px 24px;
}
.start-screen p {
    font-size: clamp(8px, 1.5vw, 11px);
    color: var(--color-accent-cyan);
    line-height: 2;
    margin-bottom: 32px;
}

/* Progress Bar */
.progress-container {
    margin-bottom: 24px;
}
.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: clamp(8px, 1.5vw, 10px);
}
.progress-question { color: var(--color-accent-cyan); }
.progress-score { color: var(--color-accent-gold); }
.progress-bar {
    width: 100%;
    height: 20px;
    background: rgba(0,0,0,0.5);
    border: 3px solid var(--color-accent-gold);
    border-radius: 4px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent-gold), #FFAA00);
    transition: width 0.4s ease;
    width: 0%;
}

/* Question Area */
.question-area { display: none; }
.question-area.active { display: block; }

.question-text {
    font-size: clamp(10px, 2vw, 14px);
    color: var(--color-white);
    text-shadow: 2px 2px 0px var(--color-black);
    line-height: 2;
    margin-bottom: 24px;
    padding: 20px;
    background: rgba(0,0,0,0.4);
    border: var(--border-width) solid var(--color-accent-gold);
    border-radius: var(--border-radius);
}

/* Answer Options */
.options-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}
@media (min-width: 600px) {
    .options-grid { grid-template-columns: 1fr 1fr; }
}

.option-btn {
    display: block;
    width: 100%;
    padding: 16px 20px;
    font-family: var(--font-primary);
    font-size: clamp(8px, 1.5vw, 11px);
    color: var(--color-white);
    background: rgba(13, 71, 161, 0.8);
    border: var(--border-width) solid var(--color-accent-cyan);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-default);
    cursor: pointer;
    text-align: left;
    line-height: 1.8;
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}
.option-btn:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--color-black);
    border-color: var(--color-accent-gold);
    background: rgba(13, 71, 161, 1);
}
.option-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0px var(--color-black);
}
.option-btn.correct {
    background: rgba(0, 160, 0, 0.8);
    border-color: var(--color-accent-green);
    animation: correctPulse 0.5s ease;
}
.option-btn.wrong {
    background: rgba(180, 0, 0, 0.8);
    border-color: var(--color-accent-red);
    animation: shake 0.5s ease;
}
.option-btn.disabled {
    pointer-events: none;
    opacity: 0.5;
}

/* Character */
.character-container {
    text-align: center;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px 0;
}
.character {
    font-size: 64px;
    transition: transform 0.3s ease;
}
.character.happy { animation: happyBounce 0.6s ease; }
.character.sad { animation: sadShake 0.6s ease; }

.feedback-text {
    font-size: clamp(10px, 2vw, 14px);
    text-shadow: 2px 2px 0px var(--color-black);
    margin-top: 8px;
    min-height: 24px;
}
.feedback-text.correct-text { color: var(--color-accent-green); }
.feedback-text.wrong-text { color: var(--color-accent-red); }

/* Next Button */
.next-btn {
    display: none;
    margin: 20px auto 0;
    padding: 14px 32px;
    font-family: var(--font-primary);
    font-size: clamp(10px, 2vw, 14px);
    color: var(--color-black);
    background: var(--color-accent-gold);
    border: var(--border-width) solid #AA6600;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-default);
    cursor: pointer;
    letter-spacing: 2px;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}
.next-btn:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--color-black);
}
.next-btn:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0px var(--color-black);
}
.next-btn.visible { display: block; }

/* Start / Restart Button */
.start-btn {
    display: inline-block;
    padding: 16px 40px;
    font-family: var(--font-primary);
    font-size: clamp(12px, 2.5vw, 16px);
    color: var(--color-black);
    background: var(--color-accent-gold);
    border: var(--border-width) solid #AA6600;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-default);
    cursor: pointer;
    letter-spacing: 2px;
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}
.start-btn:hover {
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0px var(--color-black);
}

/* Results Screen */
.results-screen { display: none; text-align: center; padding: 32px 16px; }
.results-screen.active { display: block; }

.results-icon { font-size: clamp(48px, 10vw, 80px); margin-bottom: 16px; }
.results-title {
    font-size: clamp(16px, 4vw, 28px);
    text-shadow: 3px 3px 0px var(--color-black);
    margin-bottom: 16px;
}
.results-title.pass { color: var(--color-accent-gold); }
.results-title.fail { color: var(--color-accent-cyan); }

.results-score {
    font-size: clamp(12px, 3vw, 20px);
    color: var(--color-white);
    margin-bottom: 24px;
}

.results-message {
    font-size: clamp(8px, 1.5vw, 11px);
    color: var(--color-accent-cyan);
    line-height: 2.2;
    margin-bottom: 24px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.results-tips {
    text-align: left;
    background: rgba(0,0,0,0.4);
    border: var(--border-width) solid var(--color-accent-gold);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 24px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.results-tips h3 {
    font-size: clamp(10px, 2vw, 13px);
    color: var(--color-accent-gold);
    margin-bottom: 12px;
}
.results-tips ul {
    list-style: none;
    padding: 0;
}
.results-tips li {
    font-size: clamp(7px, 1.3vw, 10px);
    color: var(--color-accent-cyan);
    line-height: 2.2;
    padding-left: 20px;
    position: relative;
}
.results-tips li::before {
    content: '>';
    position: absolute;
    left: 0;
    color: var(--color-accent-gold);
}

.results-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
}
.results-buttons a, .results-buttons button {
    padding: 12px 24px;
    font-family: var(--font-primary);
    font-size: clamp(8px, 1.5vw, 11px);
    border: var(--border-width) solid;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-default);
    cursor: pointer;
    text-decoration: none;
    letter-spacing: 1px;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}
.btn-retry {
    color: var(--color-black);
    background: var(--color-accent-gold);
    border-color: #AA6600;
}
.btn-back {
    color: var(--color-white);
    background: rgba(13,71,161,0.8);
    border-color: var(--color-accent-cyan);
}

/* Confetti */
.confetti-container {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 100;
    overflow: hidden;
}
.confetti-piece {
    position: absolute;
    width: 10px;
    height: 10px;
    top: -10px;
    animation: confettiFall linear forwards;
}

/* Animations */
@keyframes correctPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.03); }
    100% { transform: scale(1); }
}
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-8px); }
    40% { transform: translateX(8px); }
    60% { transform: translateX(-6px); }
    80% { transform: translateX(6px); }
}
@keyframes happyBounce {
    0% { transform: scale(1) rotate(0deg); }
    25% { transform: scale(1.2) rotate(-10deg); }
    50% { transform: scale(1.3) rotate(10deg); }
    75% { transform: scale(1.2) rotate(-5deg); }
    100% { transform: scale(1) rotate(0deg); }
}
@keyframes sadShake {
    0% { transform: rotate(0deg); }
    20% { transform: rotate(-15deg); }
    40% { transform: rotate(15deg); }
    60% { transform: rotate(-10deg); }
    80% { transform: rotate(10deg); }
    100% { transform: rotate(0deg); }
}
@keyframes confettiFall {
    0% { top: -10px; opacity: 1; }
    100% { top: 110vh; opacity: 0; }
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Mobile */
@media (max-width: 600px) {
    .quiz-container { padding: 12px; }
    .question-text { padding: 14px; }
    .option-btn { padding: 14px 16px; }
    .character { font-size: 48px; }
}