@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --accent-color: #4A90E2;
    --background-color: #F7F8FC;
    --panel-bg: #FFFFFF;
    --text-primary: #1A202C;
    --text-secondary: #718096;
    --border-color: #EDF2F7;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    font-size: 16px;
}

/* --- Mobile First Layout --- */
.app-container {
    display: block;
    width: 100%;
}

.mobile-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
    height: 60px;
    background: var(--panel-bg);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 900;
}
.mobile-header h1 { font-size: 1.2rem; color: var(--text-primary); }
.mobile-nav-btn { background: none; border: none; font-size: 1.5rem; cursor: pointer; }

.main-content {
    padding: 1rem;
    margin-top: 60px; /* Space for fixed mobile header */
}

.sidebar, .right-panel {
    position: fixed;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    background: var(--panel-bg);
    z-index: 1000;
    transition: transform 0.3s ease-in-out;
    padding: 1rem;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

.sidebar {
    width: 260px;
    left: 0;
    transform: translateX(-100%);
    border-right: 1px solid var(--border-color);
}
.sidebar.is-open { transform: translateX(0); }

.right-panel {
    width: 300px;
    right: 0;
    transform: translateX(100%);
    border-left: 1px solid var(--border-color);
}
.right-panel.is-open { transform: translateX(0); }

.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
}
.mobile-overlay.is-active {
    opacity: 1;
    visibility: visible;
}

/* --- Desktop Layout (3-column) --- */
@media (min-width: 1024px) {
    body { overflow: hidden; }
    .mobile-header { display: none; }
    .app-container {
        display: grid;
        grid-template-columns: 240px 1fr 360px;
        height: 100vh;
    }
    .main-content {
        margin-top: 0;
        height: 100vh;
        overflow-y: auto;
        padding: 2rem;
    }
    .sidebar, .right-panel {
        position: static;
        transform: translateX(0);
        height: 100vh;
        box-shadow: none;
    }
}

/* --- Shared Component Styles --- */
.main-header {
    margin-bottom: 1.5rem;
}

/* THIS IS THE CORRECTED RULE FOR THE SEARCH BAR */
.main-header input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    background: var(--panel-bg);
}

.sidebar-header h1 { font-size: 1.5rem; font-weight: 700; margin-bottom: 2rem; }
.sidebar-nav { display: flex; flex-direction: column; gap: 0.5rem; }
.nav-item {
    display: flex; align-items: center; gap: 12px;
    padding: 0.8rem 1rem; border-radius: 8px;
    text-decoration: none; color: var(--text-secondary);
    font-weight: 500; transition: all 0.2s ease-in-out;
}
.nav-item img { width: 20px; }
.nav-item.active, .nav-item:hover {
    background-color: var(--accent-color);
    color: white;
}
.panel-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.panel-header h2 { font-size: 1.1rem; }
.panel-header input {
    border: 1px solid var(--border-color); border-radius: 5px;
    padding: 4px 8px; text-align: center; width: 100px;
}
.btn-icon { background: none; border: none; font-size: 1.2rem; cursor: pointer; }
.weekly-planner { display: grid; grid-template-columns: repeat(7, 1fr); gap: 5px; }
.day-column h4 { font-size: 0.8rem; text-align: center; color: var(--text-secondary); }
.meal-slot {
    height: 70px; background: var(--background-color); border-radius: 8px;
    margin-top: 5px; border: 1px dashed var(--border-color);
    font-size: 0.7rem; padding: 4px;
    display: flex; align-items: center; justify-content: center; text-align: center;
    overflow: hidden;
}
.meal-slot span { font-weight: 500; }
.shopping-list li {
    padding: 8px 0; border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem; list-style: none;
}
.filter-container { margin: 1.5rem 0; display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.filter-btn {
    background: var(--panel-bg); border: 1px solid var(--border-color);
    border-radius: 20px; padding: 6px 12px;
    font-size: 0.8rem; font-weight: 500; cursor: pointer;
    transition: all 0.2s ease;
}
.filter-btn.active, .filter-btn:hover {
    background: var(--accent-color); color: white; border-color: var(--accent-color);
}
.recipe-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}
.recipe-card {
    background: var(--panel-bg); border-radius: 12px;
    box-shadow: var(--shadow); position: relative;
    transition: transform 0.2s ease;
}
.recipe-card:hover { transform: translateY(-5px); }
.recipe-card-link { text-decoration: none; color: inherit; display: block; }
.recipe-card-image {
    height: 180px; background-size: cover; background-position: center;
    border-top-left-radius: 12px; border-top-right-radius: 12px;
}
.recipe-card-content { padding: 1rem; }
.recipe-card-content .category {
    font-size: 0.75rem; font-weight: 600; color: var(--accent-color);
    text-transform: uppercase;
}
.recipe-card-content h3 { font-size: 1.1rem; margin: 0.25rem 0; }
.recipe-card-content .author { font-size: 0.8rem; color: var(--text-secondary); margin-bottom: 0.5rem; }
.recipe-card-stats { font-size: 0.8rem; font-weight: 500; color: var(--text-secondary); }
.add-to-plan-btn {
    position: absolute; top: 12px; right: 12px;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: 50%; width: 36px; height: 36px;
    font-size: 1.5rem; font-weight: bold; color: var(--accent-color);
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: all 0.2s ease;
}
.add-to-plan-btn:hover { transform: scale(1.1); background: var(--accent-color); color: white; }

/* --- Recipe Detail Page --- */
.recipe-detail-header { margin-bottom: 1.5rem; }
.recipe-detail-header h1 { font-size: 2.5rem; }
.recipe-detail-header .author { font-size: 1rem; color: var(--text-secondary); }
.recipe-detail-image { width: 100%; max-height: 400px; object-fit: cover; border-radius: 12px; margin-bottom: 1.5rem; }
.recipe-detail-stats {
    display: flex; gap: 2rem; padding: 1rem;
    background: var(--background-color); border-radius: 8px; margin-bottom: 2rem;
}
.recipe-detail-body { display: grid; grid-template-columns: 1fr 2fr; gap: 3rem; }
.ingredients-section ul { list-style: none; padding-left: 0; }
.ingredients-section li { padding: 0.5rem 0; border-bottom: 1px solid var(--border-color); }
.instructions-section p { line-height: 1.8; }

/* --- Modal --- */
.modal-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5); display: flex;
    align-items: center; justify-content: center; z-index: 1000;
}
.modal-content {
    background: white; padding: 2rem; border-radius: 12px;
    width: 90%; max-width: 600px;
}
.modal-input {
    width: 100%; padding: 0.75rem; border: 1px solid var(--border-color);
    border-radius: 8px; font-size: 1rem; margin: 1rem 0;
}
.modal-meal-options {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px; margin: 1rem 0;
}
.meal-option-btn {
    background: var(--background-color); border: 1px solid var(--border-color);
    border-radius: 8px; padding: 0.8rem; cursor: pointer;
    font-weight: 500; transition: all 0.2s ease;
}
.meal-option-btn:hover { background: var(--accent-color); color: white; border-color: var(--accent-color); }

/* --- Form Styles --- */
.form-container { display: flex; flex-direction: column; gap: 1rem; max-width: 700px; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.form-group label { font-weight: 500; font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 0.75rem; border: 1px solid var(--border-color);
    border-radius: 8px; font-size: 1rem; font-family: 'Inter', sans-serif;
}
.form-row { display: flex; gap: 1rem; }
.btn {
    padding: 0.8rem 1.5rem; border: none; border-radius: 8px;
    font-weight: 600; cursor: pointer; font-size: 1rem;
}
.btn-primary { background-color: var(--accent-color); color: white; }
.btn-secondary { background-color: var(--border-color); color: var(--text-primary); }
#ingredients-container .ingredient-item {
    display: grid; grid-template-columns: 100px 100px 1fr 40px;
    gap: 10px; margin-bottom: 10px; align-items: center;
}
.remove-ingredient-btn {
    background: #e2e8f0; color: #4a5568; border: none; border-radius: 50%;
    width: 30px; height: 30px; cursor: pointer; font-weight: bold;
}