:root {
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --text-color: #2c3e50;
    --background-color: #ecf0f1;
    --card-background: #ffffff;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.main-nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 500;
}

.nav-center .tab-buttons {
    display: flex;
    gap: 1rem;
}

.tab-btn {
    background: none;
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.tab-btn.active {
    background-color: var(--accent-color);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-container {
    position: relative;
}

#searchInput {
    padding: 0.5rem 2.5rem 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    background-color: rgba(255,255,255,0.1);
    color: white;
    width: 200px;
    transition: var(--transition);
}

#searchInput::placeholder {
    color: rgba(255,255,255,0.7);
}

#searchInput:focus {
    outline: none;
    background-color: rgba(255,255,255,0.2);
    width: 250px;
}

.search-icon {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255,255,255,0.7);
}

main {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.sort-options {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

#sortSelect {
    padding: 0.5rem;
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius);
    background-color: white;
    cursor: pointer;
}

.surah-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.surah-card {
    background-color: var(--card-background);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.surah-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.surah-number {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--accent-color);
}

.surah-name {
    text-align: center;
}

.arabic {
    font-family: 'Amiri', serif;
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.turkish {
    color: var(--secondary-color);
}

.verse-count {
    color: var(--secondary-color);
    font-size: 0.9rem;
    text-align: right;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
}

.modal-content {
    background-color: var(--card-background);
    margin: 2rem auto;
    padding: 2rem;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: var(--border-radius);
    position: relative;
}

.close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--secondary-color);
    transition: var(--transition);
}

.close:hover {
    color: var(--accent-color);
}

.verse {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(0,0,0,0.1);
}

.verse:last-child {
    border-bottom: none;
}

.verse-number {
    color: var(--accent-color);
    font-weight: 500;
    margin-bottom: 1rem;
}

.arabic-text {
    font-family: 'Amiri', serif;
    font-size: 2rem;
    line-height: 2;
    text-align: right;
    margin-bottom: 1rem;
}

.translation {
    color: var(--secondary-color);
    line-height: 1.8;
}

footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--primary-color);
    color: white;
    margin-top: 4rem;
}

@media (max-width: 768px) {
    .nav-center {
        display: none;
    }
    
    .nav-right {
        flex: 1;
        justify-content: flex-end;
    }
    
    #searchInput {
        width: 150px;
    }
    
    #searchInput:focus {
        width: 200px;
    }
    
    .modal-content {
        margin: 1rem;
        padding: 1rem;
    }
    
    .arabic-text {
        font-size: 1.5rem;
    }
}