/* Modern Dark Theme for Food Inventory */

:root {
    --bg-primary: #1a1d23;
    --bg-secondary: #22262e;
    --bg-card: #2a2f3a;
    --bg-hover: #353b48;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --text-primary: #e5e7eb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border-color: #374151;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    margin-bottom: 2rem;
    box-shadow: var(--shadow);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    transition: all 0.2s;
    font-weight: 500;
}

.nav a:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav a.active {
    background: var(--bg-hover);
    color: var(--text-primary);
    border: 2px solid var(--accent-primary);
    box-shadow: 0 0 0 1px var(--accent-primary);
}

/* Page Title */
h1, h2, h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: 0.75rem;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.card h3 {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-lg);
}

.stat-card h3 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.stat-card p {
    font-size: 0.875rem;
    opacity: 0.9;
}

.alert-card {
    border-left: 4px solid var(--accent-warning);
}

/* Tables */
.table-container {
    overflow-x: auto;
    border-radius: 0.5rem;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--bg-secondary);
}

thead th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}

tbody tr:hover {
    background: var(--bg-hover);
}

tbody td {
    padding: 1rem;
    color: var(--text-secondary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    font-size: 0.875rem;
}

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

.btn-primary:hover {
    background: #4f46e5;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn-success:hover {
    background: #059669;
}

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

.btn-danger:hover {
    background: #dc2626;
}

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

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

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.813rem;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.875rem;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-size: 0.938rem;
    transition: all 0.2s;
}

/* Select dropdown styling */
select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23e5e7eb' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

/* Option elements */
select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 0.5rem;
}

select option:hover,
select option:checked {
    background: var(--bg-hover);
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

textarea {
    min-height: 100px;
    resize: vertical;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--accent-success);
    color: var(--accent-success);
}

.alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--accent-warning);
    color: var(--accent-warning);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--accent-danger);
    color: var(--accent-danger);
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    color: var(--accent-success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    color: var(--accent-warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    color: var(--accent-danger);
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
}

.login-card h1 {
    text-align: center;
    margin-bottom: 2rem;
}

/* Expiring Items */
.expiring-item {
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.expiring-soon {
    border-left: 3px solid var(--accent-warning);
}

.expired {
    border-left: 3px solid var(--accent-danger);
}

/* Low Stock Items */
.low-stock-item {
    padding: 0.75rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    margin-bottom: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item-name {
    font-weight: 500;
    color: var(--text-primary);
}

.quantity {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.expiry-date {
    font-size: 0.875rem;
}

/* No Items Message */
.no-items {
    text-align: center;
    color: var(--text-muted);
    padding: 2rem;
}

.no-items a {
    color: var(--accent-primary);
    text-decoration: none;
}

.no-items a:hover {
    text-decoration: underline;
}

/* Table Actions */
.table-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .nav {
        flex-wrap: wrap;
        justify-content: center;
    }

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

    table {
        font-size: 0.875rem;
    }

    thead th,
    tbody td {
        padding: 0.75rem 0.5rem;
    }
}

/* Card Icons */
.card-icon {
    font-size: 1.25rem;
}

/* User Avatar */
.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--accent-primary);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1rem;
}

/* Action Links */
a {
    color: var(--accent-primary);
    text-decoration: none;
}

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

/* Loading States */
.loading {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Nutrition Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.7);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: var(--bg-card);
    margin: auto;
    padding: 0;
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.nutrition-modal-content {
    padding: 2rem;
}

.close {
    color: var(--text-muted);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
    position: absolute;
    right: 1rem;
    top: 1rem;
    z-index: 1;
}

.close:hover,
.close:focus {
    color: var(--text-primary);
}

/* Spinner */
.spinner {
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

/* Nutrition Search Results */
.nutrition-results {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 1rem;
}

.nutrition-result-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

.nutrition-result-item:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.nutrition-result-type {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Nutrition Facts Label */
.nutrition-facts {
    background: white;
    color: #000;
    border: 2px solid #000;
    border-radius: 0.5rem;
    padding: 1rem;
    font-family: Arial, sans-serif;
    max-width: 500px;
    margin: 0 auto;
}

.nutrition-title {
    font-size: 2rem;
    font-weight: 900;
    color: #000;
    margin: 0 0 0.5rem 0;
    border-bottom: 8px solid #000;
    padding-bottom: 0.25rem;
}

.nutrition-food-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: #000;
    margin-bottom: 0.25rem;
}

.nutrition-brand {
    font-size: 0.875rem;
    color: #333;
    margin-bottom: 0.25rem;
}

.nutrition-serving {
    font-size: 0.875rem;
    font-weight: 600;
    color: #000;
    margin-bottom: 0.5rem;
}

.nutrition-divider {
    border: none;
    border-top: 4px solid #000;
    margin: 0.5rem 0;
}

.nutrition-divider-thin {
    border: none;
    border-top: 1px solid #000;
    margin: 0.25rem 0;
}

.nutrition-row {
    display: flex;
    justify-content: space-between;
    padding: 0.25rem 0;
    border-bottom: 1px solid #ccc;
}

.nutrition-row-sub {
    padding-left: 1rem;
    font-size: 0.875rem;
}

.nutrition-label {
    font-weight: 600;
    color: #000;
}

.nutrition-value {
    font-weight: 700;
    color: #000;
}

/* Nutrition Icon */
.nutrition-icon {
    opacity: 0.7;
    transition: opacity 0.2s;
}

.nutrition-icon:hover {
    opacity: 1;
}