/* Cloudflare Brand Colors */
:root {
    --cf-orange: #F6821F;
    --cf-orange-light: #FAAD3F;
    --cf-orange-dark: #E55300;
    --cf-blue: #0051C3;
    --cf-blue-light: #5C9DFF;
    --cf-blue-dark: #003682;
    --cf-gray-dark: #1D1D1D;
    --cf-gray: #404040;
    --cf-gray-light: #6B6B6B;
    --cf-white: #FFFFFF;
    --cf-background: #0D1117;
    --cf-card-bg: #161B22;
    --cf-success: #2EA44F;
    --cf-error: #F85149;
    --cf-warning: #D29922;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--cf-background) 0%, #1a1f2e 50%, var(--cf-gray-dark) 100%);
    min-height: 100vh;
    color: var(--cf-white);
    overflow-x: hidden;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
}

/* Screen Management */
.screen {
    display: none;
    animation: fadeIn 0.5s ease;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Welcome Screen */
.logo-container {
    text-align: center;
    padding: 40px 0;
}

.robot-animation {
    font-size: 80px;
    animation: bounce 2s infinite, rotate 4s infinite;
    display: inline-block;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes rotate {
    0%, 100% { transform: rotate(-5deg) translateY(0); }
    25% { transform: rotate(5deg) translateY(-10px); }
    50% { transform: rotate(-5deg) translateY(-20px); }
    75% { transform: rotate(5deg) translateY(-10px); }
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--cf-orange) 0%, var(--cf-orange-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-top: 20px;
}

.subtitle {
    font-size: 1.2rem;
    color: var(--cf-gray-light);
    margin-top: 10px;
}

.welcome-content {
    max-width: 500px;
    margin: 0 auto;
}

.info-card {
    background: var(--cf-card-bg);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid rgba(246, 130, 31, 0.2);
}

.info-card h3 {
    color: var(--cf-orange);
    margin-bottom: 16px;
    font-size: 1.2rem;
}

.info-card ul {
    list-style: none;
}

.info-card li {
    padding: 8px 0;
    color: var(--cf-white);
    opacity: 0.9;
}

.info-card li strong {
    color: var(--cf-orange-light);
}

/* Player Setup */
.player-setup {
    background: var(--cf-card-bg);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;
    border: 1px solid rgba(0, 81, 195, 0.2);
}

.player-setup h3 {
    color: var(--cf-blue-light);
    margin-bottom: 16px;
}

.player-input-group {
    display: flex;
    gap: 10px;
    margin-bottom: 16px;
}

.player-input-group input {
    flex: 1;
    padding: 12px 16px;
    border-radius: 8px;
    border: 2px solid var(--cf-gray);
    background: var(--cf-background);
    color: var(--cf-white);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.player-input-group input:focus {
    outline: none;
    border-color: var(--cf-blue);
}

.player-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.player-tag {
    background: linear-gradient(135deg, var(--cf-blue) 0%, var(--cf-blue-light) 100%);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    animation: popIn 0.3s ease;
}

@keyframes popIn {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

.player-tag .remove-player {
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.player-tag .remove-player:hover {
    opacity: 1;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border-radius: 8px;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn-primary {
    background: linear-gradient(135deg, var(--cf-orange) 0%, var(--cf-orange-dark) 100%);
    color: var(--cf-white);
    box-shadow: 0 4px 15px rgba(246, 130, 31, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(246, 130, 31, 0.4);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--cf-blue) 0%, var(--cf-blue-dark) 100%);
    color: var(--cf-white);
}

.btn-secondary:hover {
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 48px;
    font-size: 1.2rem;
    width: 100%;
}

/* Round Intro Screen */
.round-intro-content {
    text-align: center;
    padding: 60px 20px;
}

.round-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--cf-orange) 0%, var(--cf-orange-light) 100%);
    padding: 12px 32px;
    border-radius: 30px;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.round-intro-content h2 {
    font-size: 2rem;
    margin-bottom: 16px;
    color: var(--cf-white);
}

.round-intro-content p {
    color: var(--cf-gray-light);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.round-icon {
    font-size: 100px;
    margin: 40px 0;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

/* Question Screen */
.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--cf-card-bg);
    border-radius: 12px;
}

.round-indicator {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.round-indicator span:first-child {
    color: var(--cf-orange);
    font-weight: 600;
}

.round-indicator span:last-child {
    color: var(--cf-gray-light);
    font-size: 0.9rem;
}

.timer-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.timer-bar {
    width: 150px;
    height: 8px;
    background: var(--cf-gray);
    border-radius: 4px;
    overflow: hidden;
}

.timer-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--cf-success) 0%, var(--cf-warning) 50%, var(--cf-error) 100%);
    width: 100%;
    transition: width 0.1s linear;
}

.timer-text {
    font-weight: 600;
    min-width: 40px;
}

.current-player-indicator {
    text-align: center;
    padding: 12px;
    background: linear-gradient(135deg, var(--cf-blue-dark) 0%, var(--cf-blue) 100%);
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.current-player-indicator strong {
    color: var(--cf-orange-light);
    margin-left: 8px;
}

.question-container {
    position: relative;
}

.question-card {
    background: var(--cf-card-bg);
    border-radius: 16px;
    padding: 32px;
    margin-bottom: 24px;
    border: 2px solid var(--cf-orange);
    text-align: center;
}

.question-image {
    font-size: 60px;
    margin-bottom: 20px;
    animation: wiggle 1s ease-in-out infinite;
}

@keyframes wiggle {
    0%, 100% { transform: rotate(-3deg); }
    50% { transform: rotate(3deg); }
}

.question-card h2 {
    font-size: 1.4rem;
    line-height: 1.5;
    color: var(--cf-white);
}

.answers-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

@media (max-width: 600px) {
    .answers-container {
        grid-template-columns: 1fr;
    }
}

.answer-btn {
    padding: 20px;
    border-radius: 12px;
    border: 2px solid var(--cf-gray);
    background: var(--cf-card-bg);
    color: var(--cf-white);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 12px;
}

.answer-btn:hover:not(:disabled) {
    border-color: var(--cf-blue);
    background: rgba(0, 81, 195, 0.1);
    transform: translateX(5px);
}

.answer-btn.correct {
    border-color: var(--cf-success);
    background: rgba(46, 164, 79, 0.2);
    animation: correctPulse 0.5s ease;
    font-size: 1.25rem;
    font-weight: 600;
    padding: 20px 24px;
}

.answer-btn.incorrect {
    border-color: var(--cf-error);
    background: rgba(248, 81, 73, 0.2);
    animation: shake 0.5s ease;
    opacity: 0.6;
}

@keyframes correctPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.answer-letter {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--cf-orange);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

/* Multi-select Questions */
.answer-btn.multi-select {
    position: relative;
}

.answer-btn.multi-select .check-mark {
    display: none;
    margin-left: auto;
    font-size: 1.2rem;
    color: var(--cf-orange);
}

.answer-btn.multi-select.selected {
    border-color: var(--cf-orange);
    background: rgba(246, 130, 31, 0.15);
}

.answer-btn.multi-select.selected .check-mark {
    display: block;
}

.answer-btn.multi-select.selected .answer-letter {
    background: var(--cf-orange-light);
}

.submit-multi {
    margin-top: 16px;
}

/* Feedback Overlay */
.feedback-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 100;
    animation: fadeIn 0.3s ease;
}

.feedback-overlay.hidden {
    display: none;
}

.feedback-content {
    text-align: center;
    padding: 40px;
    animation: popIn 0.3s ease;
}

.feedback-icon {
    font-size: 80px;
    margin-bottom: 20px;
}

.feedback-content h3 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.feedback-content h3.correct {
    color: var(--cf-success);
}

.feedback-content h3.incorrect {
    color: var(--cf-error);
}

.feedback-points {
    font-size: 1.5rem;
    color: var(--cf-orange-light);
    font-weight: 600;
}

.feedback-explanation {
    margin-top: 16px;
    color: var(--cf-gray-light);
    font-size: 1rem;
    max-width: 400px;
}

/* Round Summary Screen */
#round-summary-screen,
#host-summary-screen,
#player-summary-screen {
    text-align: center;
    padding: 40px 20px;
}

.summary-subtitle {
    color: var(--cf-gray-light);
    margin-bottom: 24px;
    font-size: 1.1rem;
}

.summary-content {
    max-width: 800px;
    margin: 0 auto 32px;
}

.summary-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--cf-card-bg);
    border-radius: 12px;
    overflow: hidden;
}

.summary-table thead {
    background: linear-gradient(135deg, var(--cf-orange) 0%, var(--cf-blue) 100%);
}

.summary-table th {
    padding: 16px 20px;
    text-align: left;
    font-weight: 700;
    font-size: 1.1rem;
    color: white;
}

.summary-table td {
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    text-align: left;
    vertical-align: top;
}

.summary-table tr:last-child td {
    border-bottom: none;
}

.summary-table .term-cell {
    width: 30%;
    font-size: 1.1rem;
    color: var(--cf-orange);
}

.summary-table .definition-cell {
    font-size: 1rem;
    color: var(--cf-gray-light);
    line-height: 1.5;
}

/* Scoreboard Screen */
#scoreboard-screen {
    text-align: center;
    padding: 40px 20px;
}

#scoreboard-screen h2 {
    font-size: 2rem;
    margin-bottom: 32px;
    color: var(--cf-orange);
}

.scoreboard {
    max-width: 500px;
    margin: 0 auto 32px;
}

.score-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--cf-card-bg);
    border-radius: 12px;
    margin-bottom: 12px;
    border-left: 4px solid var(--cf-orange);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateX(-20px); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

.score-row .rank {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--cf-orange);
    min-width: 40px;
}

.score-row .name {
    flex: 1;
    text-align: left;
    margin-left: 16px;
    font-weight: 500;
}

.score-row .score {
    font-weight: 700;
    color: var(--cf-blue-light);
}

/* Final Results Screen */
#results-screen {
    text-align: center;
    padding: 40px 20px;
    position: relative;
    overflow: hidden;
}

#results-screen h1 {
    font-size: 2.5rem;
    margin-bottom: 40px;
}

.podium-container {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 20px;
    margin-bottom: 40px;
}

.podium-place {
    text-align: center;
    animation: riseUp 0.8s ease;
}

@keyframes riseUp {
    from { transform: translateY(100px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.podium-place.first {
    animation-delay: 0.2s;
}

.podium-place.second {
    animation-delay: 0.4s;
}

.podium-place.third {
    animation-delay: 0.6s;
}

.player-avatar {
    font-size: 48px;
    margin-bottom: 8px;
}

.podium-place .player-name {
    font-weight: 600;
    margin-bottom: 4px;
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.podium-place .player-score {
    color: var(--cf-orange-light);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.podium-block {
    width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 800;
    color: var(--cf-white);
    border-radius: 8px 8px 0 0;
}

.first .podium-block {
    height: 120px;
    background: linear-gradient(180deg, #FFD700 0%, #FFA500 100%);
}

.second .podium-block {
    height: 90px;
    background: linear-gradient(180deg, #C0C0C0 0%, #A0A0A0 100%);
}

.third .podium-block {
    height: 60px;
    background: linear-gradient(180deg, #CD7F32 0%, #8B4513 100%);
}

.all-scores {
    max-width: 400px;
    margin: 0 auto 32px;
}

.all-scores h3 {
    color: var(--cf-gray-light);
    margin-bottom: 16px;
}

/* Confetti */
.confetti-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 50;
}

.confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    animation: confettiFall 3s linear forwards;
}

@keyframes confettiFall {
    0% {
        transform: translateY(-100px) rotate(0deg);
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(720deg);
        opacity: 0;
    }
}

/* Fun Animations for Images */
.thinking-robot {
    animation: think 2s ease-in-out infinite;
}

@keyframes think {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1) rotate(5deg); }
}

.spinning-gear {
    animation: spin 3s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.jumping-brain {
    animation: jump 0.5s ease-in-out infinite;
}

@keyframes jump {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* Responsive */
@media (max-width: 600px) {
    h1 {
        font-size: 1.8rem;
    }
    
    .robot-animation {
        font-size: 60px;
    }
    
    .podium-container {
        gap: 10px;
    }
    
    .podium-block {
        width: 80px;
    }
    
    .question-card h2 {
        font-size: 1.2rem;
    }
}