/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Source Sans Pro', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }

p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    line-height: 1.7;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.nav-brand {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: #2c3e50;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #555;
    font-weight: 400;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: #2c3e50;
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)),
                url('https://images.unsplash.com/photo-1481627834876-b7833e8f5570?w=1920&h=1080&fit=crop') center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    position: relative;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
}

.hero-content {
    z-index: 2;
    max-width: 800px;
}

.hero-title {
    font-size: 4.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    letter-spacing: 2px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* About Section */
.about-section {
    padding: 5rem 0;
    background: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 4rem;
    align-items: start;
}

.author-image {
    text-align: center;
}

.author-image img {
    width: 250px;
    height: 250px;
    border-radius: 20px;
    object-fit: cover;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.author-description h2 {
    color: #2c3e50;
    margin-bottom: 2rem;
}

.author-description p {
    font-size: 1.1rem;
    color: #555;
    line-height: 1.8;
}

/* Bestsellers Section */
.bestsellers-section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 3rem;
}

.bestsellers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

/* Book Card Styles */
.book-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.book-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.book-cover {
    width: 100%;
    height: 300px;
    object-fit: cover;
}

.book-info {
    padding: 2rem;
}

.book-title {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.book-subtitle {
    color: #666;
    font-size: 1rem;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.book-links {
    display: flex;
    gap: 1rem;
}

.book-link {
    flex: 1;
    text-align: center;
    padding: 0.8rem;
    background: #2c3e50;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.3s ease;
    font-weight: 600;
}

.book-link:hover {
    background: #34495e;
}

.book-link.digital {
    background: #3498db;
}

.book-link.digital:hover {
    background: #2980b9;
}

/* Books Page Specific */
.books-header {
    padding: 8rem 0 3rem;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* Projects Page Specific */
.projects-header {
    padding: 8rem 0 3rem;
    text-align: center;
    background: linear-gradient(135deg, #2c3e50 0%, #4a6741 100%);
    color: white;
}

.projects-section {
    padding: 5rem 0;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

/* Project Card Styles */
.project-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.project-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.project-info {
    padding: 2rem;
}

.project-title {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.project-description {
    color: #666;
    font-size: 1rem;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    background: #2c3e50;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    transition: background 0.3s ease;
    font-weight: 600;
}

.project-link:hover {
    background: #34495e;
}

.project-link i {
    font-size: 0.9rem;
}

/* Quote Section */
.quote-section {
    padding: 5rem 0;
    background: #2c3e50;
    color: white;
}

.quote-section .section-title {
    color: white;
}

.quote-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
}

.quote-info h3 {
    margin-bottom: 1rem;
    color: white;
}

.quote-info p {
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.quote-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.quote-form .form-group {
    display: flex;
    flex-direction: column;
}

.quote-form .form-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: white;
}

.quote-form .form-group input,
.quote-form .form-group select,
.quote-form .form-group textarea {
    padding: 0.8rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.quote-form .form-group input::placeholder,
.quote-form .form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.quote-form .form-group select {
    cursor: pointer;
}

.quote-form .form-group select option {
    background: #2c3e50;
    color: white;
}

.quote-form .form-group input:focus,
.quote-form .form-group select:focus,
.quote-form .form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

.page-title {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
}

.books-section {
    padding: 5rem 0;
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

/* Contact Section */
.contact-section {
    padding: 5rem 0;
    background: #2c3e50;
    color: white;
}

.contact-section .section-title {
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
}

.contact-info h3 {
    margin-bottom: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1rem 0;
}

.contact-item i {
    font-size: 1.2rem;
    color: #3498db;
}

/* Form Styles */
.contact-form,
.admin-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: inherit;
}

.form-group input,
.form-group textarea {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.contact-form input,
.contact-form textarea {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

.submit-btn {
    padding: 1rem 2rem;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
}

.submit-btn:hover {
    background: #2980b9;
}

.submit-btn:disabled {
    background: #95a5a6;
    cursor: not-allowed;
}

/* Admin Styles */
.admin-header {
    padding: 8rem 0 3rem;
    text-align: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* Authentication Styles */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 50vh;
}

.login-panel {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.login-panel h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.login-panel p {
    color: #666;
    margin-bottom: 2rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.login-form .form-group {
    display: flex;
    flex-direction: column;
}

.login-form .form-group label {
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #2c3e50;
}

.login-form .form-group input {
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.login-form .form-group input:focus {
    outline: none;
    border-color: #3498db;
}

.login-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 1rem 2rem;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
    width: 100%;
}

.login-btn:hover {
    background: #2980b9;
}

.login-btn:disabled {
    background: #95a5a6;
    cursor: not-allowed;
}

.login-error {
    margin-top: 1rem;
    padding: 1rem;
    background: #fee;
    color: #c33;
    border-radius: 8px;
    border: 1px solid #fcc;
}

.user-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
}

.user-info span {
    font-weight: 600;
    color: #2c3e50;
}

.logout-btn {
    padding: 0.5rem 1rem;
    background: #e74c3c;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.3s ease;
}

.logout-btn:hover {
    background: #c0392b;
}

.admin-section {
    padding: 3rem 0;
    min-height: 60vh;
}

.admin-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
    border-bottom: 2px solid #ecf0f1;
}

.tab-btn {
    padding: 1rem 2rem;
    background: none;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    color: #7f8c8d;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.tab-btn.active {
    color: #2c3e50;
    border-bottom-color: #3498db;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.admin-panel {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.admin-panel h3 {
    color: #2c3e50;
    margin-bottom: 2rem;
}

/* Contact List */
.contact-item-card {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    border-left: 4px solid #3498db;
}

.contact-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.contact-subject {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.contact-message {
    line-height: 1.6;
}

/* Loading and Error States */
.loading {
    text-align: center;
    padding: 3rem;
    color: #666;
    font-size: 1.1rem;
}

.error {
    text-align: center;
    padding: 3rem;
    color: #e74c3c;
    font-size: 1.1rem;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: #7f8c8d;
    font-size: 1.1rem;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 2rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 3rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .quote-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        gap: 1rem;
    }
    
    .admin-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        text-align: left;
        border-bottom: none;
        border-left: 3px solid transparent;
    }
    
    .tab-btn.active {
        border-left-color: #3498db;
        border-bottom-color: transparent;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .book-links {
        flex-direction: column;
    }
    
    .admin-panel {
        padding: 2rem 1rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        gap: 0.5rem;
    }
    
    .nav-menu a {
        font-size: 0.9rem;
    }
}