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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #ec4899;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-dark: #1a1a2e;
    --bg-darker: #0f0f1e;
    --bg-light: #16213e;
    --text-primary: #f0f0f0;
    --text-secondary: #b0b0b0;
    --border-color: #2d2d44;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

.container {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 15px;
}

@media (min-width: 480px) {
    .container {
        padding: 20px;
    }
}

@media (min-width: 768px) {
    .container {
        padding: 25px;
    }
}

header {
    background: rgba(15, 15, 30, 0.8);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
    text-align: center;
    margin-bottom: 20px;
}

header h1 {
    font-size: 1.8em;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

header p {
    color: var(--text-secondary);
    font-size: 0.85em;
}

@media (min-width: 480px) {
    header {
        padding: 20px 0;
        margin-bottom: 30px;
    }
    
    header h1 {
        font-size: 2em;
        margin-bottom: 10px;
    }
    
    header p {
        font-size: 0.9em;
    }
}

@media (min-width: 768px) {
    header {
        padding: 25px 0;
        margin-bottom: 40px;
    }
    
    header h1 {
        font-size: 2.5em;
    }
    
    header p {
        font-size: 0.95em;
    }
}

footer.footer {
    background: rgba(15, 15, 30, 0.8);
    border-top: 1px solid var(--border-color);
    padding: 15px 0;
    text-align: center;
    margin-top: auto;
}

footer.footer p {
    color: var(--text-secondary);
    font-size: 0.8em;
    margin: 0;
    letter-spacing: 0.3px;
}

.voting-section {
    background: rgba(22, 33, 62, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

@media (min-width: 480px) {
    .voting-section {
        padding: 30px;
        margin-bottom: 30px;
        border-radius: 10px;
    }
}

@media (min-width: 768px) {
    .voting-section {
        padding: 40px;
        margin-bottom: 40px;
        border-radius: 12px;
    }
}

.code-input-group {
    margin-bottom: 20px;
    text-align: center;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--border-color);
}

.code-input-group label {
    display: block;
    margin-bottom: 10px;
    font-size: 0.95em;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.code-input-group input {
    width: 100%;
    max-width: 100%;
    padding: 12px 15px;
    font-size: 1em;
    letter-spacing: 2px;
    text-align: center;
    border: 2px solid var(--border-color);
    background: rgba(15, 15, 30, 0.6);
    color: var(--text-primary);
    border-radius: 6px;
    transition: all 0.3s ease;
}

@media (min-width: 480px) {
    .code-input-group {
        margin-bottom: 25px;
        padding-bottom: 35px;
    }
    
    .code-input-group label {
        margin-bottom: 12px;
        font-size: 1em;
        letter-spacing: 0.8px;
    }
    
    .code-input-group input {
        max-width: 300px;
        padding: 13px 18px;
        font-size: 1.1em;
        letter-spacing: 2.5px;
        border-radius: 7px;
    }
}

@media (min-width: 768px) {
    .code-input-group {
        margin-bottom: 30px;
        padding-bottom: 40px;
    }
    
    .code-input-group label {
        margin-bottom: 15px;
        font-size: 1.1em;
        letter-spacing: 1px;
    }
    
    .code-input-group input {
        max-width: 320px;
        padding: 15px 20px;
        font-size: 1.2em;
        letter-spacing: 3px;
        border-radius: 8px;
    }
}

.code-input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
    background: rgba(15, 15, 30, 0.9);
}

.verify-btn, .submit-vote-btn {
    padding: 12px 30px;
    font-size: 0.9em;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.verify-btn:hover:not(:disabled), .submit-vote-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.verify-btn:active, .submit-vote-btn:active {
    transform: translateY(0);
}

.verify-btn:disabled, .submit-vote-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.message {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 500;
    display: none;
}

.message.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger-color);
    color: #fca5a5;
}

.message.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--success-color);
    color: #86efac;
}

.round-section {
    display: none;
    margin-top: 30px;
}

.round-section.active {
    display: block;
}

.round-section h2 {
    margin-bottom: 15px;
    font-size: 1.5em;
    text-align: center;
    color: var(--text-primary);
}

.question-text {
    background: rgba(99, 102, 241, 0.1);
    border-left: 4px solid var(--primary-color);
    padding: 15px;
    margin-bottom: 25px;
    border-radius: 4px;
    font-size: 1.1em;
    color: var(--text-primary);
}

.options-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
    margin-bottom: 20px;
}

@media (min-width: 480px) {
    .options-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-bottom: 25px;
    }
}

@media (min-width: 768px) {
    .options-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 15px;
        margin-bottom: 30px;
    }
}

.option-card {
    padding: 15px;
    background: rgba(15, 15, 30, 0.6);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 80px;
}

.option-card:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.2);
}

.option-card.selected {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.2);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.option-card input[type="radio"] {
    display: none;
}

.option-text {
    font-size: 1em;
    font-weight: 600;
}

.submit-vote-btn {
    width: 100%;
    margin-top: 20px;
    padding: 15px;
    font-size: 1em;
    background: linear-gradient(135deg, var(--success-color) 0%, #059669 100%);
}

.discussion-section {
    display: none;
    margin-top: 30px;
    text-align: center;
    padding: 30px;
    background: rgba(16, 185, 129, 0.05);
    border: 2px dashed var(--success-color);
    border-radius: 8px;
}

.discussion-section.active {
    display: block;
}

.discussion-section h2 {
    margin-bottom: 15px;
    color: var(--success-color);
}

.discussion-section p {
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.6;
}

#continueRound2Btn {
    margin-top: 20px;
}

.thank-you-section {
    display: none;
    margin-top: 30px;
    text-align: center;
    padding: 30px;
    background: rgba(16, 185, 129, 0.05);
    border: 2px solid var(--success-color);
    border-radius: 8px;
}

.thank-you-section.active {
    display: block;
}

.thank-you-section h2 {
    margin-bottom: 15px;
    color: var(--success-color);
}

.thank-you-section p {
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.6;
}

#viewStatsBtn {
    margin-top: 20px;
}

.stats-section {
    background: rgba(22, 33, 62, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.stats-section h2 {
    margin-bottom: 30px;
    font-size: 1.8em;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.comparison-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 20px;
    margin-bottom: 40px;
    align-items: flex-start;
}

@media (max-width: 768px) {
    .comparison-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .comparison-arrow {
        display: none;
    }
}

.comparison-arrow {
    font-size: 2em;
    color: var(--primary-color);
    text-align: center;
    align-self: center;
}

.round-comparison h3 {
    margin-bottom: 20px;
    font-size: 1.2em;
    text-align: center;
}

.stats-results {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.result-item {
    background: rgba(15, 15, 30, 0.6);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 15px;
}

.result-item-name {
    font-weight: 600;
    font-size: 1em;
    flex: 1;
}

.result-item-bar-container {
    flex: 2;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    overflow: hidden;
    height: 30px;
    display: flex;
    align-items: center;
}

.result-item-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--primary-light) 100%);
    border-radius: 20px;
    transition: width 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 600;
    font-size: 0.85em;
    padding: 0 10px;
    min-width: 30px;
}

.result-item-count {
    text-align: right;
    min-width: 80px;
    font-weight: 600;
}

.result-item-count .votes {
    font-size: 1.2em;
    color: var(--primary-light);
}

.result-item-count .percentage {
    font-size: 0.85em;
    color: var(--text-secondary);
}

.changes-analysis {
    margin-top: 40px;
}

.changes-analysis h3 {
    margin-bottom: 25px;
    font-size: 1.3em;
    text-align: center;
}

.changes-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.stat-card {
    background: rgba(15, 15, 30, 0.6);
    border: 1px solid var(--border-color);
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

.stat-card h4 {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card .value {
    font-size: 2.5em;
    font-weight: bold;
    color: var(--primary-light);
}

.stat-card .value.changed {
    color: var(--warning-color);
}

.stat-card .value.unchanged {
    color: var(--success-color);
}

.stat-card .value.percentage {
    color: var(--secondary-color);
}

.spinner {
    border: 3px solid rgba(99, 102, 241, 0.2);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 0.8s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@media (max-width: 480px) {
    .container {
        padding: 15px;
    }

    header h1 {
        font-size: 1.5em;
    }

    .voting-section,
    .stats-section {
        padding: 20px;
    }

    .code-input-group input {
        max-width: 100%;
    }

    .changes-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}