/* ===== CSS Variables ===== */
:root {
    /* Color Palette */
    --tomato-red: #E54B4B;
    --tomato-red-light: #FF6B6B;
    --tomato-red-dark: #C43C3C;
    --cream-white: #FFF8F0;
    --cream-white-pure: #FFFCF9;
    --sage-green: #87A878;
    --sage-green-light: #A8C49A;
    --sage-green-dark: #6B8A5E;

    /* Neutrals */
    --text-primary: #2D2D2D;
    --text-secondary: #5A5A5A;
    --text-light: #8A8A8A;
    --border-color: #E8E0D8;
    --shadow-soft: rgba(45, 45, 45, 0.08);
    --shadow-medium: rgba(45, 45, 45, 0.12);

    /* Spacing */
    --container-max: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
    --transition-slow: 0.4s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--cream-white);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

h1, h2, h3, h4 {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 600;
    line-height: 1.3;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Header ===== */
.header {
    background: var(--cream-white-pure);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--spacing-sm) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.logo-icon {
    font-size: 1.8rem;
}

.logo h1 {
    font-size: 1.75rem;
    color: var(--tomato-red);
    letter-spacing: -0.5px;
}

.nav {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-btn:hover {
    background: var(--cream-white);
    color: var(--text-primary);
}

.nav-btn.active {
    background: var(--sage-green-light);
    color: var(--sage-green-dark);
}

.heart-icon {
    color: var(--tomato-red);
}

.favorites-count {
    background: var(--tomato-red);
    color: white;
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

/* ===== Hero Section ===== */
.hero {
    text-align: center;
    padding: var(--spacing-xl) 0;
    background: linear-gradient(180deg, var(--cream-white-pure) 0%, var(--cream-white) 100%);
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto var(--spacing-lg);
}

.surprise-btn {
    background: linear-gradient(135deg, var(--tomato-red) 0%, var(--tomato-red-light) 100%);
    color: white;
    font-size: 1.15rem;
    font-weight: 600;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 20px rgba(229, 75, 75, 0.35);
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.surprise-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(229, 75, 75, 0.45);
}

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

.btn-icon {
    font-size: 1.3rem;
}

/* ===== Surprise Result Section ===== */
.surprise-result {
    padding: var(--spacing-lg) 0 var(--spacing-xl);
    background: var(--cream-white-pure);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.surprise-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.surprise-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: 0 4px 20px var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.surprise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.main-dish::before {
    background: linear-gradient(90deg, var(--tomato-red), var(--tomato-red-light));
}

.side-dish::before {
    background: linear-gradient(90deg, var(--sage-green), var(--sage-green-light));
}

.dish-label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.main-dish .dish-label {
    background: rgba(229, 75, 75, 0.1);
    color: var(--tomato-red);
}

.side-dish .dish-label {
    background: rgba(135, 168, 120, 0.15);
    color: var(--sage-green-dark);
}

.dish-content h4 {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.dish-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
}

.dish-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.85rem;
    color: var(--text-light);
}

.dish-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.cooking-tips {
    background: linear-gradient(135deg, rgba(135, 168, 120, 0.1) 0%, rgba(168, 196, 154, 0.1) 100%);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.cooking-tips h4 {
    font-size: 1rem;
    color: var(--sage-green-dark);
    margin-bottom: var(--spacing-sm);
}

.tips-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.tips-list li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding-left: var(--spacing-md);
    position: relative;
}

.tips-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--sage-green);
    font-weight: bold;
}

.try-another-btn {
    background: white;
    color: var(--tomato-red);
    font-size: 1rem;
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 2px solid var(--tomato-red);
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.try-another-btn:hover {
    background: var(--tomato-red);
    color: white;
}

/* ===== Section Styles ===== */
.section-title {
    font-size: 1.75rem;
    text-align: center;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* ===== Ingredient Section ===== */
.ingredient-section {
    padding: var(--spacing-xl) 0;
}

.ingredient-categories {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.ingredient-category {
    background: white;
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 12px var(--shadow-soft);
}

.category-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.ingredient-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.ingredient-chip {
    cursor: pointer;
}

.ingredient-chip input {
    display: none;
}

.ingredient-chip span {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--cream-white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.ingredient-chip:hover span {
    border-color: var(--sage-green);
    color: var(--text-primary);
}

.ingredient-chip input:checked + span {
    background: var(--sage-green);
    border-color: var(--sage-green);
    color: white;
}

.ingredient-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.find-recipes-btn {
    background: var(--sage-green);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.find-recipes-btn:hover {
    background: var(--sage-green-dark);
}

.clear-btn {
    color: var(--text-light);
    font-size: 0.95rem;
    padding: var(--spacing-sm) var(--spacing-md);
    transition: color var(--transition-fast);
}

.clear-btn:hover {
    color: var(--tomato-red);
}

/* ===== Recipe Section ===== */
.recipe-section {
    padding: var(--spacing-xl) 0;
    background: var(--cream-white-pure);
}

.filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 12px var(--shadow-soft);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.filter-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.filter-options {
    display: flex;
    gap: 4px;
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    background: var(--cream-white);
}

.filter-btn.active {
    background: var(--sage-green-light);
    color: var(--sage-green-dark);
    font-weight: 500;
}

/* ===== Recipe Grid ===== */
.recipe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.recipe-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 4px 16px var(--shadow-soft);
    transition: all var(--transition-normal);
    cursor: pointer;
    position: relative;
}

.recipe-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px var(--shadow-medium);
}

.recipe-card-image {
    height: 180px;
    background: linear-gradient(135deg, var(--sage-green-light) 0%, var(--sage-green) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
}

.recipe-card-badges {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    display: flex;
    gap: 4px;
}

.badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    backdrop-filter: blur(4px);
}

.badge-time {
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-secondary);
}

.badge-difficulty {
    background: rgba(229, 75, 75, 0.9);
    color: white;
}

.badge-difficulty.beginner {
    background: rgba(135, 168, 120, 0.9);
}

.save-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
    z-index: 10;
}

.save-btn:hover {
    transform: scale(1.1);
    background: white;
}

.save-btn .heart {
    color: var(--border-color);
    transition: color var(--transition-fast);
}

.save-btn.saved .heart {
    color: var(--tomato-red);
}

.recipe-card-content {
    padding: var(--spacing-md);
}

.recipe-card h4 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.recipe-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.recipe-card-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-light);
}

/* Quick Steps Overlay */
.quick-steps-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(0deg, rgba(45, 45, 45, 0.95) 0%, rgba(45, 45, 45, 0.85) 100%);
    color: white;
    padding: var(--spacing-md);
    transform: translateY(100%);
    transition: transform var(--transition-normal);
}

.recipe-card:hover .quick-steps-overlay {
    transform: translateY(0);
}

.quick-steps-overlay h5 {
    font-size: 0.85rem;
    margin-bottom: var(--spacing-xs);
    color: var(--sage-green-light);
}

.quick-steps-overlay ol {
    font-size: 0.8rem;
    padding-left: var(--spacing-md);
    line-height: 1.5;
}

.quick-steps-overlay li {
    margin-bottom: 2px;
}

/* ===== No Results / Empty States ===== */
.no-results, .no-favorites {
    text-align: center;
    padding: var(--spacing-xl);
}

.no-results p {
    color: var(--text-secondary);
    font-size: 1rem;
}

.empty-state {
    padding: var(--spacing-xl);
}

.empty-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: var(--spacing-md);
}

.empty-state h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.explore-btn {
    background: var(--sage-green);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.explore-btn:hover {
    background: var(--sage-green-dark);
}

/* ===== Pages ===== */
.page {
    display: none;
}

.page.active {
    display: block;
}

.page-title {
    font-size: 2rem;
    text-align: center;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.page-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(45, 45, 45, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 36px;
    height: 36px;
    background: var(--cream-white);
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background: var(--tomato-red);
    color: white;
}

.modal-header {
    height: 200px;
    background: linear-gradient(135deg, var(--sage-green-light) 0%, var(--sage-green) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
}

.modal-body-content {
    padding: var(--spacing-lg);
}

.modal-body-content h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-xs);
}

.modal-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.modal-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.modal-section {
    margin-bottom: var(--spacing-lg);
}

.modal-section h3 {
    font-size: 1.1rem;
    color: var(--sage-green-dark);
    margin-bottom: var(--spacing-sm);
}

.ingredients-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-xs);
}

.ingredients-list li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: var(--spacing-xs);
    background: var(--cream-white);
    border-radius: var(--radius-sm);
}

.ingredients-list li::before {
    content: '• ';
    color: var(--sage-green);
    font-weight: bold;
}

.steps-list {
    list-style: none;
    counter-reset: step;
}

.steps-list li {
    position: relative;
    padding-left: 2.5rem;
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.steps-list li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 1.75rem;
    height: 1.75rem;
    background: var(--sage-green);
    color: white;
    border-radius: 50%;
    font-size: 0.85rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-save-btn {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
    background: var(--cream-white);
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
}

.modal-save-btn:hover {
    border-color: var(--tomato-red);
    color: var(--tomato-red);
}

.modal-save-btn.saved {
    background: var(--tomato-red);
    color: white;
    border-color: var(--tomato-red);
}

/* ===== Footer ===== */
.footer {
    background: white;
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.footer p {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer strong {
    color: var(--tomato-red);
}

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

/* ===== Animations ===== */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-in {
    animation: fadeIn 0.4s ease forwards;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .header .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .surprise-btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 1rem;
    }

    .filters {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-group {
        flex-direction: column;
        align-items: flex-start;
    }

    .filter-options {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
    }

    .recipe-grid {
        grid-template-columns: 1fr;
    }

    .modal-content {
        max-height: 90vh;
    }
}

@media (max-width: 480px) {
    .nav {
        flex-direction: column;
        width: 100%;
    }

    .nav-btn {
        justify-content: center;
    }

    .ingredient-actions {
        flex-direction: column;
    }

    .find-recipes-btn, .clear-btn {
        width: 100%;
    }
}