/* ========================================
   БАЗОВЫЕ СТИЛИ
   ======================================== */

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

:root {
    --primary-color: #2ecc71;
    --secondary-color: #f39c12;
    --accent-color: #e74c3c;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --gold-color: #f1c40f;

    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', sans-serif;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
}

body {
    font-family: var(--font-main);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: var(--dark-color);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* ========================================
   ЭКРАНЫ
   ======================================== */

.screen {
    display: none;
    animation: fadeIn 0.4s ease;
}

.screen.active {
    display: block;
}

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

/* ========================================
   ПРИВЕТСТВЕННЫЙ ЭКРАН
   ======================================== */

.game-header {
    text-align: center;
    padding: 40px 20px;
}

.logo {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 20px;
}

.school-logo-main {
    max-width: 150px;
    height: auto;
    margin: 0 auto 20px;
    display: block;
}

.logo-icon {
    font-size: 80px;
    margin-bottom: 20px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.logo h1 {
    font-size: 2.5em;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.contest-info {
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
    color: white;
    padding: 25px;
    border-radius: 15px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-lg);
}

.contest-info h3 {
    font-size: 1.5em;
    margin-bottom: 15px;
}

.contest-info p {
    margin-bottom: 10px;
    line-height: 1.6;
}

.contest-nomination {
    font-style: italic;
    font-weight: 600;
    margin-top: 10px;
}

.school-info {
    background: white;
    padding: 20px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    text-align: center;
}

.subtitle {
    font-size: 1.2em;
    color: #7f8c8d;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.feature {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 50px;
    display: block;
    margin-bottom: 15px;
}

.feature h3 {
    color: var(--dark-color);
    margin-bottom: 10px;
    font-size: 1.3em;
}

.feature p {
    color: #7f8c8d;
    font-size: 0.95em;
}

/* ========================================
   ОБРАЗОВАТЕЛЬНЫЙ БЛОК
   ======================================== */

.finance-education {
    background: white;
    border-radius: 20px;
    padding: 40px;
    margin-bottom: 40px;
    box-shadow: var(--shadow-lg);
}

.finance-education h2 {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 30px;
    font-size: 2em;
}

.education-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.edu-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 25px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.edu-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.edu-icon {
    font-size: 50px;
    margin-bottom: 15px;
    text-align: center;
}

.edu-card h4 {
    font-size: 1.3em;
    margin-bottom: 15px;
    text-align: center;
}

.edu-card p {
    font-size: 0.95em;
    line-height: 1.6;
    opacity: 0.95;
}

/* ========================================
   КНОПКИ
   ======================================== */

.btn-primary,
.btn-secondary {
    display: block;
    width: 100%;
    max-width: 400px;
    margin: 15px auto;
    padding: 15px 30px;
    font-size: 1.1em;
    font-weight: 600;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    background: #27ae60;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: white;
    color: var(--dark-color);
    border: 2px solid var(--dark-color);
}

.btn-secondary:hover {
    background: var(--dark-color);
    color: white;
}

/* ========================================
   ФОРМА РЕГИСТРАЦИИ
   ======================================== */

.form-container {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    max-width: 600px;
    margin: 40px auto;
}

.form-container h2 {
    color: var(--primary-color);
    margin-bottom: 10px;
    text-align: center;
}

.form-description {
    text-align: center;
    color: #7f8c8d;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark-color);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    font-size: 1em;
    border: 2px solid #ddd;
    border-radius: 8px;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-buttons {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.form-buttons button {
    flex: 1;
    margin: 0;
}

/* ========================================
   ТАБЛИЦА ЛИДЕРОВ
   ======================================== */

.leaderboard-container {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.leaderboard-container h2 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.filters {
    margin-bottom: 25px;
    text-align: center;
}

.filters select {
    padding: 10px 20px;
    font-size: 1em;
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    background: white;
    cursor: pointer;
}

.leaderboard-table {
    overflow-x: auto;
    margin-bottom: 30px;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #7f8c8d;
    font-size: 1.1em;
}

.leader-item {
    display: grid;
    grid-template-columns: 60px 1fr 150px 100px 100px;
    gap: 15px;
    padding: 15px;
    margin-bottom: 10px;
    background: #f8f9fa;
    border-radius: 10px;
    align-items: center;
    transition: transform 0.2s ease;
}

.leader-item:hover {
    transform: translateX(5px);
    background: #e9ecef;
}

.leader-item.top-1 {
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
    color: white;
    font-weight: 600;
}

.leader-item.top-2 {
    background: linear-gradient(135deg, #C0C0C0 0%, #A8A8A8 100%);
    font-weight: 600;
}

.leader-item.top-3 {
    background: linear-gradient(135deg, #CD7F32 0%, #B8860B 100%);
    color: white;
    font-weight: 600;
}

.leader-rank {
    font-size: 1.5em;
    font-weight: bold;
    text-align: center;
}

.leader-name {
    font-weight: 600;
}

.leader-school {
    color: #7f8c8d;
    font-size: 0.9em;
}

.leader-score {
    font-size: 1.2em;
    font-weight: bold;
    color: var(--primary-color);
    text-align: center;
}

.leader-accuracy {
    text-align: center;
    font-weight: 600;
}

.accuracy-good {
    color: var(--success-color);
}

.accuracy-medium {
    color: var(--warning-color);
}

.accuracy-low {
    color: var(--danger-color);
}

/* ========================================
   АДАПТИВНОСТЬ
   ======================================== */

@media (max-width: 768px) {
    .logo h1 {
        font-size: 2em;
    }

    .logo-icon {
        font-size: 60px;
    }

    .features {
        grid-template-columns: 1fr;
    }

    .form-container {
        padding: 25px;
    }

    .form-buttons {
        flex-direction: column;
    }

    .leader-item {
        grid-template-columns: 50px 1fr;
        gap: 10px;
        font-size: 0.9em;
    }

    .leader-school,
    .leader-score,
    .leader-accuracy {
        grid-column: 2;
    }
}