/* BookAfri - Main Stylesheet */
:root {
    /* Brownish Color Palette */
    --primary-color: #a1887f;      /* Light brown primary */
    --primary-dark: #8d6e63;      /* Darker brown */
    --primary-light: #bcaaa4;     /* Lighter brown */
    --secondary-color: #6d4c41;   /* Secondary brown */
    --accent-color: #8d6e63;      /* Accent brown */
    --success-color: #81c784;     /* Green for success */
    --danger-color: #e57373;      /* Red for danger */
    --warning-color: #ffb74d;     /* Orange for warning */
    --info-color: #4fc3f7;        /* Blue for info */

    /* Light Brownish Theme */
    --bg-primary: #f5f1ee;        /* Light cream/brownish background */
    --bg-secondary: #efebe9;      /* Slightly darker cream/brownish */
    --bg-tertiary: #d7ccc8;       /* Even darker brownish */
    --text-primary: #4e342e;      /* Dark brown text */
    --text-secondary: #795548;    /* Medium brown text */
    --text-muted: #a1887f;        /* Light brown text */
    --border-color: #d7ccc8;      /* Brownish border */
    --border-color-light: #e0d7d2; /* Lighter brownish border */
    --shadow-sm: 0 1px 2px 0 rgba(161, 136, 127, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(161, 136, 127, 0.15);
    --shadow-lg: 0 10px 15px -3px rgba(161, 136, 127, 0.2);
    --shadow-xl: 0 20px 25px -5px rgba(161, 136, 127, 0.25);

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms;
    --transition-normal: 250ms;
    --transition-slow: 350ms;
}

/* Dark Theme Variables (will be overridden by dark.css) */
[data-theme="dark"] {
    --bg-primary: #4e342e;        /* Dark brown background */
    --bg-secondary: #5d4037;      /* Darker brown secondary */
    --bg-tertiary: #6d4c41;       /* Darkest brown tertiary */
    --text-primary: #efebe9;      /* Light text on dark brown */
    --text-secondary: #d7ccc8;    /* Medium light text */
    --text-muted: #bcaaa4;        /* Lighter muted text */
    --border-color: #6d4c41;      /* Dark brown border */
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-4);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-4);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* Layout */
.main-content {
    flex: 1;
    padding: var(--spacing-6) 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    gap: var(--spacing-2);
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--border-color);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-success:hover {
    background-color: #059669;
}

.btn-sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-4);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: var(--spacing-3);
    font-size: var(--font-size-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: border-color var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

.form-text {
    display: block;
    margin-top: var(--spacing-2);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.form-check-input {
    width: 1rem;
    height: 1rem;
}

.form-check-label {
    font-size: var(--font-size-sm);
}

/* Alerts */
.alert {
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-4);
    border: 1px solid transparent;
}

.alert-success {
    background-color: #d1fae5;
    border-color: #a7f3d0;
    color: #065f46;
}

.alert-error {
    background-color: #fee2e2;
    border-color: #fecaca;
    color: #991b1b;
}

.alert-warning {
    background-color: #fef3c7;
    border-color: #fde68a;
    color: #92400e;
}

.alert-info {
    background-color: #dbeafe;
    border-color: #bfdbfe;
    color: #1e40af;
}

/* Cards */
.card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

.card-body {
    padding: var(--spacing-4);
}

.card-footer {
    padding: var(--spacing-4);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

/* Navigation */
.navbar {
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-4) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.95);
}

[data-theme="dark"] .navbar {
    background-color: rgba(15, 23, 42, 0.95);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.navbar-brand .logo {
    height: 32px;
    width: auto;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
}

.navbar-nav {
    display: flex;
    list-style: none;
    gap: var(--spacing-4);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: var(--bg-secondary);
}

.nav-link.active {
    color: var(--primary-color);
    background-color: rgba(37, 99, 235, 0.1);
}

.navbar-search {
    flex: 1;
    max-width: 400px;
}

.search-form {
    position: relative;
}

.search-input {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-10) var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    background-color: var(--bg-secondary);
}

.search-btn {
    position: absolute;
    right: var(--spacing-3);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
}

.search-suggestions {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-2);
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 1000;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.cart-icon {
    position: relative;
    color: var(--text-secondary);
    padding: var(--spacing-2);
}

.cart-count {
    position: absolute;
    top: -4px;
    right: -4px;
    background-color: var(--danger-color);
    color: white;
    font-size: 0.75rem;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    display: none;
}

.theme-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
}

.theme-toggle:hover {
    background-color: var(--bg-secondary);
}

/* User Dropdown */
.user-dropdown {
    position: relative;
}

.user-menu-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
}

.user-menu-toggle:hover {
    background-color: var(--bg-secondary);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.user-name {
    font-weight: 500;
    color: var(--text-primary);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    margin-top: var(--spacing-2);
    display: none;
    z-index: 1000;
}

.dropdown-menu.show {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--text-primary);
    text-decoration: none;
}

.dropdown-item:hover {
    background-color: var(--bg-secondary);
}

.dropdown-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: var(--spacing-2) 0;
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-8) 0 var(--spacing-4);
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-8);
}

.footer-section h4 {
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-lg);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-2);
}

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

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

.social-links {
    display: flex;
    gap: var(--spacing-3);
    margin-top: var(--spacing-4);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background-color: var(--bg-tertiary);
    border-radius: 50%;
    color: var(--text-secondary);
}

.social-link:hover {
    background-color: var(--primary-color);
    color: white;
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-2);
    margin-top: var(--spacing-4);
}

.newsletter-form input {
    flex: 1;
    padding: var(--spacing-3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-color);
}

.payment-methods {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

.payment-icon {
    height: 24px;
    width: auto;
}

.footer-languages {
    display: flex;
    gap: var(--spacing-2);
}

.footer-languages a {
    font-size: var(--font-size-lg);
}

.footer-languages a.active {
    opacity: 0.5;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-8 { margin-top: var(--spacing-8); }

.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-8 { margin-bottom: var(--spacing-8); }

.d-flex { display: flex; }
.d-none { display: none; }
.flex-column { flex-direction: column; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }

.grid {
    display: grid;
    gap: var(--spacing-4);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Responsive */
.navbar-toggler {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    cursor: pointer;
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: var(--spacing-4);
    right: var(--spacing-4);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    box-shadow: var(--shadow-lg);
    min-width: 300px;
    z-index: 9999;
    transform: translateY(100px);
    opacity: 0;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-2);
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: var(--font-size-lg);
}

.toast-success {
    border-left: 4px solid var(--success-color);
}

.toast-error {
    border-left: 4px solid var(--danger-color);
}

/* Rating Stars */
.rating-stars {
    color: #fbbf24;
    font-size: var(--font-size-sm);
}

.rating-stars .empty {
    color: var(--border-color);
}