/**
 * Kids Menu Planner - Main Stylesheet
 * Modern iOS-inspired design with pastel colors
 */

/* ==========================================================================
   CSS Variables
   ========================================================================== */
:root {
    --primary-color: #8FBC8F;
    --primary-light: #B4D7B4;
    --primary-dark: #6B9A6B;
    --secondary-color: #FFB6C1;
    --accent-color: #FFDAB9;
    --background: #FFFFFF;
    --surface: #F8F9FA;
    --text-primary: #2C3E50;
    --text-secondary: #6C757D;
    --text-light: #95A5A6;
    --border-color: #E9ECEF;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ==========================================================================
   App Container
   ========================================================================== */
.app-container {
    min-height: 100vh;
    padding-bottom: 80px;
}

/* ==========================================================================
   Navigation Bar
   ========================================================================== */
.navbar {
    background: var(--background);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: env(safe-area-inset-top) env(safe-area-inset-right) 0 env(safe-area-inset-left);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
}

.app-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
}

/* ==========================================================================
   Bottom Navigation
   ========================================================================== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--background);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    padding: 0.5rem env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
    z-index: 100;
    box-shadow: 0 -2px 12px rgba(0, 0, 0, 0.08);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem 1rem;
    text-decoration: none;
    color: var(--text-secondary);
    transition: var(--transition);
    border-radius: var(--radius-md);
    min-width: 60px;
}

.nav-item:hover,
.nav-item:active {
    background: var(--surface);
}

.nav-item.active {
    color: var(--primary-color);
}

.nav-icon {
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.nav-label {
    font-size: 0.75rem;
    font-weight: 500;
}

/* ==========================================================================
   Main Content
   ========================================================================== */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* ==========================================================================
   Page Header
   ========================================================================== */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

.page-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.98);
}

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

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

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

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

.btn-danger {
    background: #FF6B6B;
    color: white;
}

.btn-danger:hover {
    background: #EE5A52;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ==========================================================================
   Menu Cards (Dashboard)
   ========================================================================== */
.menu-cards {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.menu-card {
    background: var(--background);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

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

.meal-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.meal-content {
    flex: 1;
}

.meal-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.meal-food {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ==========================================================================
   Action Buttons
   ========================================================================== */
.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
}

/* ==========================================================================
   Empty State
   ========================================================================== */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.empty-text {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* ==========================================================================
   Info Banner
   ========================================================================== */
.info-banner {
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
    border-left: 4px solid #2196f3;
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-sm);
}

.info-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.info-banner span:not(.info-icon) {
    color: #1565c0;
    font-size: 0.95rem;
    font-weight: 500;
}

/* ==========================================================================
   Search Container
   ========================================================================== */
.search-container {
    margin-bottom: 1rem;
}

.search-input {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: var(--background);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(143, 188, 143, 0.1);
}

/* ==========================================================================
   Filter Tabs
   ========================================================================== */
.filter-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

.filter-tab {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    border: 2px solid var(--border-color);
    background: var(--background);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.filter-tab:hover {
    background: var(--surface);
}

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

/* ==========================================================================
   Foods List
   ========================================================================== */
.foods-list {
    display: grid;
    gap: 0.75rem;
}

.food-item {
    background: var(--background);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.food-item:hover {
    box-shadow: var(--shadow-sm);
}

.food-info {
    flex: 1;
}

.food-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.food-category {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--surface);
    border-radius: var(--radius-sm);
}

.food-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.125rem;
    border-radius: var(--radius-sm);
}

/* ==========================================================================
   Modal
   ========================================================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    backdrop-filter: blur(4px);
}

.modal.show {
    display: flex;
    animation: fadeIn 0.2s ease-out;
}

.modal-content {
    background: var(--background);
    border-radius: var(--radius-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.3s ease-out;
}

.modal-small {
    max-width: 400px;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--surface);
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--border-color);
}

.modal-body {
    padding: 1.5rem;
}

/* ==========================================================================
   Forms
   ========================================================================== */
.form {
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-input,
.form-select {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: var(--transition);
    background: var(--background);
    font-family: inherit;
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(143, 188, 143, 0.1);
}

.form-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* ==========================================================================
   Planner Page
   ========================================================================== */
.planner-actions {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.planner-form {
    display: grid;
    gap: 1.5rem;
    padding-bottom: 120px;
}

.day-card {
    background: var(--background);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.day-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-color);
}

.meal-selectors {
    display: grid;
    gap: 1rem;
}

.meal-selector {
    display: grid;
    gap: 0.5rem;
}

.meal-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.sticky-actions {
    position: fixed;
    bottom: 80px;
    left: 0;
    right: 0;
    background: var(--background);
    padding: 1rem 1.5rem;
    margin: 0;
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
    z-index: 90;
    display: flex;
    justify-content: center;
}

.sticky-actions button {
    box-shadow: var(--shadow-md);
}

.sticky-actions button:hover {
    transform: translateY(-2px);
}

/* ==========================================================================
   Calendar Page
   ========================================================================== */
.week-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--surface);
    border-radius: var(--radius-lg);
}

.week-nav-btn {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--background);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.25rem;
    transition: var(--transition);
}

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

.week-display {
    text-align: center;
}

.week-label {
    display: block;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.week-date {
    display: block;
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
}

.calendar-grid {
    display: grid;
    gap: 1rem;
}

.calendar-day-card {
    background: var(--background);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.calendar-day-header {
    background: var(--primary-color);
    color: white;
    padding: 1rem 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.calendar-day-name {
    font-size: 1.125rem;
    font-weight: 700;
}

.today-badge {
    background: rgba(255, 255, 255, 0.3);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}

.calendar-meals {
    padding: 1rem;
    display: grid;
    gap: 0.75rem;
}

.calendar-meal {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    background: var(--surface);
    border-radius: var(--radius-md);
}

.calendar-meal-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.calendar-meal-info {
    flex: 1;
}

.calendar-meal-type {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.calendar-meal-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 0.125rem;
}

/* ==========================================================================
   Toast Notification
   ========================================================================== */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text-primary);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    opacity: 0;
    transition: all 0.3s ease;
    max-width: 90%;
    text-align: center;
    font-weight: 500;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.toast.success {
    background: var(--primary-color);
}

.toast.error {
    background: #FF6B6B;
}

/* ==========================================================================
   Loading State
   ========================================================================== */
.loading {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */
.text-danger {
    color: #FF6B6B;
}

.text-center {
    text-align: center;
}

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

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

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 767px) {
    .sticky-actions {
        bottom: calc(70px + env(safe-area-inset-bottom));
        padding: 0.875rem 1rem calc(0.875rem + env(safe-area-inset-bottom)) 1rem;
    }
    
    .sticky-actions button {
        width: auto;
        min-width: 180px;
        max-width: 220px;
        padding: 0.75rem 1.5rem;
    }
    
    .planner-form {
        padding-bottom: calc(140px + env(safe-area-inset-bottom));
    }
}

@media (min-width: 768px) {
    .menu-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .calendar-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .planner-actions {
        justify-content: flex-start;
    }
}

@media (min-width: 1024px) {
    .calendar-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .foods-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */
@media print {
    .navbar,
    .bottom-nav,
    .page-header button,
    .planner-actions,
    .sticky-actions,
    .week-navigation {
        display: none;
    }
    
    .app-container {
        padding-bottom: 0;
    }
}