/* Base Styles & CSS Variables */
:root {
    /* Color Palette */
    --primary-dark: #05386B;
    --primary: #379683;
    --accent: #5CDB95;
    --accent-light: #8EE4AF;
    --light: #EDF5E1;
    
    /* Light Theme Colors */
    --background: #ffffff;
    --surface: #f8f9fa;
    --text-primary: #333333;
    --text-secondary: #666666;
    --border: rgba(0, 0, 0, 0.1);
    --shadow: rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    
    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Montserrat', sans-serif;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    
    /* Container Width */
    --container-width: 1200px;
}

/* Dark Theme */
.dark-theme {
    --background: #121212;
    --surface: #1e1e1e;
    --text-primary: #f8f9fa;
    --text-secondary: #adb5bd;
    --border: rgba(255, 255, 255, 0.1);
    --shadow: rgba(0, 0, 0, 0.3);
}

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

html {
    font-size: 16px;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    font-weight: 700;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--space-md);
}

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

a:hover {
    color: var(--accent);
}

/* Layout */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--space-md);
    
}

header {
    background-color: var(--surface);
    padding: var(--space-md) 0;
    box-shadow: 0 2px 4px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

main {
    flex: 1;
    padding: var(--space-xl) 0;
}

footer {
    background-color: var(--surface);
    padding: var(--space-lg) 0;
    margin-top: auto;
    text-align: center;
    border-top: 1px solid var(--border);
}

/* Components */
/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
}

.btn svg {
    width: 18px;
    height: 18px;
}

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

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.btn-outline:hover {
    background-color: var(--surface);
}

.btn-danger {
    background-color: #e74c3c;
    color: white;
}

.btn-danger:hover {
    background-color: #c0392b;
}

.btn-sm {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.875rem;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: transparent;
    border: none;
    cursor: pointer;
    transition: background-color var(--transition-fast);
    color: var(--text-primary);
}

.btn-icon:hover {
    background-color: var(--border);
}

/* Controls Section */
.controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    justify-content: space-between;
    align-items: center;
}

.search-container {
    display: flex;
    flex: 1;
    max-width: 500px;
}

.search-container input {
    flex: 1;
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md) 0 0 var(--radius-md);
    background-color: var(--surface);
    color: var(--text-primary);
    font-family: var(--font-body);
    outline: none;
    transition: border-color var(--transition-fast);
}

.search-container input:focus {
    border-color: var(--primary);
}

.search-container button {
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    border: 1px solid var(--border);
    border-left: none;
    background-color: var(--surface);
}

.filter-container {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

select {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--surface);
    color: var(--text-primary);
    font-family: var(--font-body);
    outline: none;
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

select:focus {
    border-color: var(--primary);
}

/* Quotes Stats */
.quotes-stats {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border);
}

.export-container {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    right: 0;
    top: 100%;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 8px var(--shadow);
    z-index: 10;
    min-width: 150px;
    padding: var(--space-xs) 0;
}

.dropdown-menu button {
    display: block;
    width: 100%;
    text-align: left;
    padding: var(--space-sm) var(--space-md);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    font-family: var(--font-body);
    transition: background-color var(--transition-fast);
}

.dropdown-menu button:hover {
    background-color: var(--border);
}

/* Quotes Container */
.quotes-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.quote-card {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: 0 4px 8px var(--shadow);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    position: relative;
    display: flex;
    flex-direction: column;
}

.quote-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px var(--shadow);
}

.quote-content {
    margin-bottom: var(--space-md);
    position: relative;
    padding-left: var(--space-lg);
    flex: 1;
}

.quote-content::before {
    content: """;
    font-family: var(--font-heading);
    font-size: 4rem;
    position: absolute;
    left: -10px;
    top: -20px;
    color: var(--accent);
    opacity: 0.5;
}

.quote-text {
    font-size: 1.1rem;
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.quote-author {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.quote-category {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--primary);
    color: var(--light);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    text-transform: capitalize;
}

.quote-actions {
    display: flex;
    justify-content: space-between;
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border);
}

.quote-action-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.9rem;
}

.quote-action-btn:hover {
    color: var(--primary);
}

.favorite-btn.active {
    color: #f1c40f;
}

.favorite-btn.active svg {
    fill: #f1c40f;
}

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--space-xl) 0;
    color: var(--text-secondary);
}

.empty-state svg {
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.empty-state h2 {
    margin-bottom: var(--space-sm);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.open {
    display: flex;
}

.modal-content {
    background-color: var(--background);
    border-radius: var(--radius-lg);
    box-shadow: 0 8px 16px var(--shadow);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalFadeIn 0.3s ease forwards;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-lg);
    border-bottom: 1px solid var(--border);
}

.modal-header h2 {
    margin-bottom: 0;
}

/* Forms */
form {
    padding: var(--space-lg);
}

.form-group {
    margin-bottom: var(--space-lg);
}

label {
    display: block;
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

input[type="text"],
textarea,
select {
    width: 100%;
    padding: var(--space-md);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--surface);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

input[type="text"]:focus,
textarea:focus,
select:focus {
    border-color: var(--primary);
    outline: none;
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.checkbox-container input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

.checkbox-container label {
    margin-bottom: 0;
    cursor: pointer;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
}

.form-error {
    color: #e74c3c;
    font-size: 0.875rem;
    margin-top: var(--space-xs);
    display: block;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--surface);
    color: var(--text-primary);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 8px var(--shadow);
    z-index: 1000;
    transform: translateY(100px);
    opacity: 0;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
}

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

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

.toast.error {
    border-left: 4px solid #e74c3c;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    .controls {
        flex-direction: column;
        align-items: stretch;
    }
    
    .search-container {
        max-width: 100%;
    }
    
    .filter-container {
        flex-wrap: wrap;
    }
    
    .quotes-stats {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }
    
    .quotes-container {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions button {
        width: 100%;
    }
}

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

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.quote-card {
    animation: slideUp 0.3s ease forwards;
}

.new-quote {
    animation: fadeIn 0.5s ease forwards;
}