:root {
    --primary-color: #8b4513;
    --secondary-color: #d4a574;
    --accent-color: #c19653;
    --text-color: #2c1810;
    --light-bg: #faf8f3;
    --white: #ffffff;
}

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

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

/* Header Styles */
.navbar {
    background: linear-gradient(135deg, var(--primary-color) 0%, #a0522d 100%);
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
    padding: 1rem 0;
}

.navbar-brand {
    font-family: 'Amiri', serif;
    font-size: 1.8rem;
    font-weight: 700;
    color: #f5f5dc !important;
    text-decoration: none;
    transition: all 0.3s ease;
}

.navbar-brand:hover {
    color: #ffd700 !important;
    transform: scale(1.05);
}

.nav-link {
    color: #f5f5dc !important;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem !important;
}

.nav-link:hover,
.nav-link.active {
    color: #ffd700 !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #ffd700;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Button Styles */
.btn-primary {
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
    border: none;
    border-radius: 25px;
    padding: 12px 30px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 3px 10px rgba(196, 150, 83, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196, 150, 83, 0.4);
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--secondary-color) 100%);
}

.btn-outline-primary {
    border: 2px solid var(--secondary-color);
    color: var(--secondary-color);
    border-radius: 25px;
    padding: 10px 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

/* Card Styles */
.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    background: var(--white);
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.book-card {
    height: 100%;
    cursor: pointer;
}

.book-card img {
    border-radius: 10px;
    transition: all 0.3s ease;
}

.book-card:hover img {
    transform: scale(1.05);
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    line-height: 1.4;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(rgba(44, 24, 16, 0.7), rgba(44, 24, 16, 0.7)),
    url('../images/books-bg.jpg') center/cover;
    color: white;
    padding: 120px 0;
    text-align: center;
    position: relative;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, transparent 0%, rgba(0,0,0,0.3) 100%);
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-family: 'Amiri', serif;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease-out;
}

.hero-section .lead {
    font-size: 1.3rem;
    margin-bottom: 30px;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
    animation: fadeInUp 1s ease-out 0.2s both;
}

/* Section Titles */
.section-title {
    font-family: 'Amiri', serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(135deg, var(--secondary-color) 0%, var(--accent-color) 100%);
    border-radius: 2px;
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--text-color) 0%, #4a2c1a 100%);
    color: #f5f5dc;
    padding: 50px 0 30px;
    margin-top: 60px;
}

.footer h5 {
    color: var(--secondary-color);
    margin-bottom: 20px;
    font-weight: 600;
}

.footer a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: var(--secondary-color);
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    margin: 0 5px;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

/* Cart Badge */
.cart-badge {
    background: #dc3545;
    color: white;
    border-radius: 50%;
    padding: 2px 6px;
    font-size: 0.8rem;
    position: absolute;
    top: -5px;
    right: -10px;
    min-width: 18px;
    text-align: center;
    line-height: 1.2;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.6s ease-in;
}

.slide-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Form Styles */
.form-control,
.form-select {
    border: 2px solid #e9ecef;
    border-radius: 10px;
    padding: 12px 15px;
    transition: all 0.3s ease;
    font-size: 0.95rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 0.2rem rgba(212, 165, 116, 0.25);
}

.form-label {
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 8px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .navbar-brand {
        font-size: 1.5rem;
    }

    .btn-primary,
    .btn-outline-primary {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

@media (max-width: 576px) {
    .hero-section {
        padding: 80px 0;
    }

    .hero-title {
        font-size: 2rem;
    }

    .card-body {
        padding: 1rem;
    }
}

/* Utility Classes */
.text-primary {
    color: var(--primary-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

.border-primary {
    border-color: var(--primary-color) !important;
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--secondary-color);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Print Styles */
@media print {
    .navbar,
    .footer,
    .btn,
    .alert {
        display: none !important;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}