:root {
    --primary-color: #1a237e;
    --accent-color: #4FC3F7;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --text-color: #37474F;
}

body {
    font-family: 'Nunito', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
}

.card {
    border: none;
    border-radius: 20px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-5px);
}

.btn {
    border-radius: 25px;
    padding: 12px 24px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--primary-color);
    border: none;
}

.btn-primary:hover {
    background-color: #283593;
    transform: scale(1.05);
}

.btn-success {
    background-color: #4CAF50;
    border: none;
}

.btn-warning {
    background-color: #FFA726;
    border: none;
    color: white;
}

.timer {
    font-size: 5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.word-display {
    font-size: 2.5rem;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--card-background);
    border-radius: 25px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    margin: 2rem 0;
    padding: 2rem;
    font-weight: 600;
}

.game-logo {
    width: 120px;
    height: 120px;
    margin-bottom: 1.5rem;
}

.display-4 {
    font-weight: 700;
    color: var(--primary-color);
}

.lead {
    font-size: 1.4rem;
    color: #546E7A;
}

.form-control,
.form-select {
    border-radius: 15px;
    padding: 12px 20px;
    border: 2px solid #E0E0E0;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.25rem rgba(79, 195, 247, 0.25);
}

.card-header {
    background-color: var(--primary-color);
    color: white;
    border-radius: 20px 20px 0 0 !important;
    padding: 1rem 1.5rem;
}

.emoji-icon {
    font-size: 1.5rem;
    margin-right: 0.5rem;
}

.hidden {
    display: none !important;
}

/* Ad spaces */
.ad-space {
    min-height: 600px;
}

/* 手机端导航栏位置自定义 - 移到右下角避免与support me按钮冲突 */
@media (max-width: 768px) {
    .quick-games-bar {
        bottom: 15px !important;
        left: auto !important;
        right: 15px !important;
        transform: none !important;
    }
    
    /* 确保在打开状态下也保持右侧位置 */
    .quick-games-bar.open {
        right: 15px !important;
        left: auto !important;
    }
}