:root {
    --primary-color: #2196F3;
    --text-color: #333;
    --background-color: #f5f5f5;
    --border-color: #ddd;
    --white: #ffffff;
    --danger-color: #dc3545;
    --success-color: #28a745;
    --hover-color: #e9ecef;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

header {
    margin-bottom: 30px;
    padding: 20px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

h1 {
    color: var(--text-color);
    font-size: 24px;
}

h2 {
    font-size: 18px;
    margin-bottom: 0;
}

/* Section Headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
    gap: 10px;
}

/* Buttons and Controls */
.primary-btn, .secondary-btn, .control-btn {
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    font-weight: 500;
    min-width: 100px;
    height: 38px;
}

.primary-btn {
    background-color: var(--primary-color);
    color: var(--white);
    box-shadow: 0 2px 4px rgba(33, 150, 243, 0.2);
}

.primary-btn:hover {
    background-color: #1976D2;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(33, 150, 243, 0.3);
}

.secondary-btn {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    color: var(--text-color);
}

.secondary-btn:hover {
    background-color: var(--hover-color);
    transform: translateY(-1px);
    border-color: var(--primary-color);
}

.control-btn {
    background: var(--white);
    border: 1px solid var(--border-color);
    padding: 8px 14px;
    min-width: auto;
    height: 36px;
}

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

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

.control-btn.danger:hover {
    background-color: #c82333;
    border-color: #bd2130;
}

/* Filters and Controls */
.meal-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.filter-select {
    height: 38px;
    padding: 0 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--white);
    font-size: 14px;
    min-width: 150px;
    cursor: pointer;
    transition: all 0.2s ease;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23333' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

.filter-select:hover {
    border-color: var(--primary-color);
}

.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

/* Tab Navigation */
.tab-nav {
    display: flex;
    gap: 10px;
    margin-bottom: 30px;
}

.tab-btn {
    padding: 12px 24px;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.2s ease;
}

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

.tab-btn:hover:not(.active) {
    background: var(--hover-color);
}

.tab-content {
    display: none;
}

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

/* Calendar Layout */
.calendar {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.week-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.day {
    background: var(--white);
    border: 1px solid var(--border-color);
    padding: 25px;
    min-height: 200px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.day:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.day.selected {
    border: 2px solid var(--primary-color);
    background: #e3f2fd;
}

.day h3 {
    font-size: 18px;
    padding-bottom: 15px;
    color: var(--text-color);
    border-bottom: 1px solid var(--border-color);
    margin: 0;
    font-weight: 600;
}

.meals-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow-y: auto;
    padding-right: 8px;
}

.meals-container::-webkit-scrollbar {
    width: 6px;
}

.meals-container::-webkit-scrollbar-track {
    background: var(--hover-color);
    border-radius: 3px;
}

.meals-container::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 3px;
}

/* Meal Items */
.meal-item {
    background: var(--white);
    border: 1px solid var(--border-color);
    padding: 12px;
    margin-bottom: 8px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.meal-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.meal-item.selected {
    background: #e3f2fd;
    border-color: var(--primary-color);
}

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

.meal-item .meal-header span {
    font-weight: 500;
    font-size: 15px;
}

.meal-item .meal-details {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: #666;
    flex-wrap: wrap;
}

.meal-item .meal-type {
    background: var(--hover-color);
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 500;
}

.meal-item .calories {
    color: var(--primary-color);
    font-weight: 500;
}

.meal-item .ingredients-count {
    color: #666;
}

.edit-meal {
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.edit-meal:hover {
    background: var(--hover-color);
    color: var(--primary-color);
}

/* Meal Selection Panel */
.meal-selection-panel {
    position: fixed;
    right: 0;
    top: 0;
    bottom: 0;
    width: 350px;
    background: #fff;
    box-shadow: -2px 0 5px rgba(0, 0, 0, 0.1);
    padding: 20px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 1000;
}

.meal-selection-panel.active {
    transform: translateX(0);
}

.meal-selection-panel h2 {
    margin-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.suggestions {
    background: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
}

.suggestion-item {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 6px;
    padding: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.suggestion-item:hover {
    border-color: #007bff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.suggestion-item .meal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.suggestion-item .meal-type {
    font-size: 0.85em;
    color: #6c757d;
    background: #e9ecef;
    padding: 2px 8px;
    border-radius: 12px;
}

.suggestion-reason {
    font-size: 0.9em;
    color: #495057;
    line-height: 1.4;
}

.meal-selection-filters {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

#filteredMealList {
    flex: 1;
    overflow-y: auto;
    padding-right: 10px;
}

#filteredMealList::-webkit-scrollbar {
    width: 8px;
}

#filteredMealList::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

#filteredMealList::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

#filteredMealList::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

.shared-ingredients {
    font-size: 12px;
    color: #666;
    margin-top: 8px;
    font-style: italic;
}

/* Shopping List */
.shopping-list {
    background: var(--white);
    padding: 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.list-controls {
    display: flex;
    gap: 8px;
}

.ingredients-list {
    max-height: 500px;
    overflow-y: auto;
    padding-right: 10px;
}

.ingredient-item {
    display: flex;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.ingredient-item:last-child {
    border-bottom: none;
}

.ingredient-item input[type="checkbox"] {
    margin-right: 12px;
}

.ingredient-item.checked label {
    text-decoration: line-through;
    color: #666;
}

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

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    padding: 24px;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

input[type="text"],
input[type="number"],
select {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.2s ease;
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(33, 150, 243, 0.1);
}

.ingredient-input {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.ingredient-input .input-wrapper {
    display: flex;
    align-items: center;
    flex: 1;
    position: relative;
}

.ingredient-input .ingredient-name {
    flex: 1;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
}

.ingredient-input .ingredient-calories {
    width: 80px;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    text-align: right;
}

.ingredient-input input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(var(--primary-rgb), 0.1);
}

#mealCalories {
    background-color: #f5f5f5;
    cursor: not-allowed;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .planner-layout {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
    
    .shopping-list {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .planner-layout {
        grid-template-columns: 1fr;
    }
    
    .shopping-list {
        grid-column: auto;
    }

    .day {
        padding: 20px;
        min-height: 180px;
    }

    .meal-selection-panel {
        width: 100%;
        padding: 15px;
    }
    
    .meal-selection-filters {
        padding: 10px;
    }
    
    .meal-selection-panel .meal-item {
        padding: 12px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    .day {
        padding: 15px;
        min-height: 160px;
    }
}

/* Update meal items in calendar */
.day .meal-item {
    background: var(--hover-color);
    border: 1px solid var(--border-color);
    padding: 12px;
    margin-bottom: 0;
    border-radius: 8px;
}

.day .meal-item:hover {
    transform: none;
    border-color: var(--primary-color);
}

.day .meal-type {
    background: var(--white);
    padding: 4px 10px;
    border-radius: 12px;
    font-weight: 500;
    font-size: 13px;
}

.day .shared-ingredients {
    font-size: 11px;
    color: #666;
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px dashed var(--border-color);
}

/* Calendar Controls */
.calendar-controls {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding: 16px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    flex-wrap: wrap;
}

.calendar-controls #currentWeek {
    font-weight: 500;
    min-width: 150px;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-left: auto;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .calendar-controls {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px;
    }

    .calendar-controls #currentWeek {
        text-align: center;
    }

    .control-group {
        margin-left: 0;
        justify-content: center;
    }

    .control-btn {
        flex: 1;
        min-width: auto;
        white-space: nowrap;
    }
}

@media (max-width: 480px) {
    .control-group {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
        width: 100%;
    }

    .control-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Update meal items in calendar */
.day .meal-item {
    position: relative;
}

.day .meal-item .remove-meal {
    position: absolute;
    top: 8px;
    right: 8px;
    opacity: 0;
    z-index: 2;
}

.day .meal-item:hover .remove-meal {
    opacity: 1;
}

@media (max-width: 768px) {
    .day .meal-item .remove-meal {
        opacity: 1;
        position: relative;
        top: auto;
        right: auto;
    }
}

/* Toast Notifications */
.toast-notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--success-color);
    color: white;
    padding: 12px 24px;
    border-radius: 6px;
    font-size: 14px;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    max-width: 90%;
    margin: 0 auto;
    text-align: center;
}

@media (max-width: 768px) {
    .toast-notification {
        left: 50%;
        transform: translateX(-50%);
        bottom: 40px;
        right: auto;
        white-space: nowrap;
    }
}

/* Modal Buttons */
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

/* Remove/Close Buttons */
.remove-ingredient, .remove-meal, .close-btn, .close-panel {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--white);
    color: #6c757d;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    padding: 0;
}

.remove-ingredient:hover, .remove-meal:hover, .close-btn:hover, .close-panel:hover {
    background-color: var(--danger-color);
    color: var(--white);
    border-color: var(--danger-color);
    transform: scale(1.05);
}

/* Add Ingredient Button */
#addIngredient {
    margin-top: 12px;
    width: 100%;
    justify-content: center;
    background-color: var(--hover-color);
    border: 1px dashed var(--border-color);
    color: var(--text-color);
}

#addIngredient:hover {
    background-color: var(--white);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Panel Header */
.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
}

/* Shopping List Controls */
.shopping-list-controls {
    display: flex;
    justify-content: flex-end;
    padding: 16px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

/* Modal Content */
.modal-content {
    background: var(--white);
    border-radius: 12px;
    padding: 24px;
    width: 100%;
    max-width: 500px;
    position: relative;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.modal-header h2 {
    margin: 0;
    font-size: 20px;
    font-weight: 600;
}

/* Form Groups */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.form-group input,
.form-group select {
    width: 100%;
    height: 38px;
    padding: 0 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.form-group input[readonly] {
    background-color: var(--hover-color);
    cursor: not-allowed;
}

/* Ingredient Input Wrapper */
.ingredient-input {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.input-wrapper {
    flex: 1;
    display: flex;
    gap: 8px;
}