:root {
    --primary-color: #1a237e;
    --secondary-color: #283593;
    --accent-color: #ff6b35;
    --success-color: #00c853;
    --background-color: #f5f7fa;
    --card-color: #ffffff;
    --text-color: #2c3e50;
    --text-light: #7f8c8d;
    --border-color: #e1e8ed;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

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

body {
    font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    padding: 2rem 1rem;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background: var(--background-color);
    border-radius: 24px;
    padding: 3rem 2rem;
    box-shadow: var(--shadow-lg);
}

/* Header */
header {
    text-align: center;
    margin-bottom: 3rem;
}

h1 {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

.subtitle {
    color: var(--text-light);
    font-size: 1.1rem;
    font-weight: 400;
}

/* Controls Section */
.controls {
    background: var(--card-color);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    justify-content: center;
}

.input-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.input-group label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
}

input[type="number"] {
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    width: 120px;
    outline: none;
    transition: all 0.3s ease;
    font-family: inherit;
}

input[type="number"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

button {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: var(--shadow-sm);
}

#generateBtn {
    background: var(--gradient-accent);
    color: white;
}

#startDrawBtn {
    background: var(--success-color);
    color: white;
}

#resetBtn {
    background: var(--text-light);
    color: white;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

button:active {
    transform: translateY(0);
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Results Section */
#resultList {
    background: var(--card-color);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

#resultList h2 {
    font-size: 1.5rem;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

#results {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    min-height: 60px;
}

#results li {
    background: var(--gradient-primary);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    animation: fadeIn 0.5s ease-out;
    box-shadow: var(--shadow-sm);
}

/* Tickets Section */
#ticketList {
    background: var(--card-color);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

#ticketList h2 {
    font-size: 1.5rem;
    color: var(--text-color);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.tickets-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.ticket {
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.ticket::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ticket:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.ticket:hover::before {
    opacity: 1;
}

.ticket-row {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.ticket-row:last-child {
    margin-bottom: 0;
}

.ticket-cell {
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    background: white;
}

.ticket-cell.empty-cell {
    background: #f8f9fa;
    border-color: #e9ecef;
}

.ticket-cell.highlight {
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    border-color: #ffd700;
    color: var(--text-color);
    animation: pulse 1s infinite;
    box-shadow: 0 0 12px rgba(255, 215, 0, 0.5);
    transform: scale(1.05);
}

.ticket.winner {
    background: linear-gradient(145deg, #d4edda, #c3e6cb);
    border-color: var(--success-color);
    animation: winner 1s ease-in-out infinite;
}

.ticket.winner::before {
    opacity: 1;
    background: var(--success-color);
}

/* Animations */
@keyframes pulse {
    0%, 100% { 
        transform: scale(1.05); 
        box-shadow: 0 0 12px rgba(255, 215, 0, 0.5);
    }
    50% { 
        transform: scale(1.1); 
        box-shadow: 0 0 20px rgba(255, 215, 0, 0.8);
    }
}

@keyframes winner {
    0%, 100% { 
        transform: translateY(-4px) scale(1); 
    }
    50% { 
        transform: translateY(-4px) scale(1.02); 
    }
}

@keyframes fadeIn {
    from { 
        opacity: 0; 
        transform: scale(0.8) translateY(-10px); 
    }
    to { 
        opacity: 1; 
        transform: scale(1) translateY(0); 
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 1rem 0.5rem;
    }

    .container {
        padding: 2rem 1rem;
        border-radius: 16px;
    }

    h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .controls {
        flex-direction: column;
        padding: 1.5rem;
    }

    .input-group {
        width: 100%;
        justify-content: space-between;
    }

    button {
        width: 100%;
        justify-content: center;
    }

    input[type="number"] {
        width: 120px;
    }

    .tickets-container {
        grid-template-columns: 1fr;
    }

    #results li {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.75rem;
    }

    .ticket-cell {
        width: 36px;
        height: 36px;
        font-size: 0.85rem;
    }
}