/* MacroMeter - Modern CSS Styling */

:root {
    --primary: #FF6B6B;
    --primary-dark: #ee5a5a;
    --secondary: #4ECDC4;
    --accent: #FFE66D;
    --success: #2ECC71;
    --warning: #F39C12;
    --danger: #E74C3C;
    --dark: #2C3E50;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    min-height: 100vh;
    color: var(--dark);
    line-height: 1.6;
}

.app-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
.app-header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.app-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 5px;
}

.subtitle {
    color: var(--gray-600);
    font-size: 1rem;
}

/* Dashboard */
.dashboard {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}

.dashboard h2 {
    font-size: 1.25rem;
    margin-bottom: 20px;
    color: var(--dark);
}

.progress-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
}

.progress-card {
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    padding: 16px;
    text-align: center;
}

.progress-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 8px;
}

.progress-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.progress-bar {
    height: 8px;
    background: var(--gray-300);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.4s ease;
}

.progress-fill.protein { background: var(--secondary); }
.progress-fill.carbs { background: var(--accent); }
.progress-fill.fat { background: #9B59B6; }

.progress-remaining {
    font-size: 0.8rem;
    color: var(--gray-600);
}

.progress-remaining.over {
    color: var(--danger);
    font-weight: 600;
}

/* Tabs */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.tab {
    flex: 1;
    min-width: 100px;
    padding: 12px 16px;
    border: none;
    background: var(--white);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-600);
    transition: all 0.2s ease;
    box-shadow: var(--shadow);
}

.tab:hover {
    background: var(--gray-100);
}

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

/* Tab Content */
.tab-content {
    display: none;
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

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

.tab-content h3 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--dark);
}

/* Input Group */
.input-group {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.input-group input {
    flex: 1;
    padding: 14px 18px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

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

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

.btn.primary:disabled {
    background: var(--gray-400);
    cursor: not-allowed;
    transform: none;
}

.btn.secondary {
    background: var(--gray-100);
    color: var(--dark);
    border: 2px solid var(--gray-300);
}

.btn.secondary:hover {
    background: var(--gray-200);
}

.btn.ghost {
    background: transparent;
    color: var(--gray-600);
}

.btn.ghost:hover {
    background: var(--gray-100);
    color: var(--danger);
}

/* Pending Meal */
.pending-meal {
    background: #e8f4fd;
    border: 2px solid #90cdf4;
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
}

.pending-meal h3 {
    color: #2b6cb0;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 12px;
    margin: 16px 0;
}

.preview-item {
    text-align: center;
    padding: 12px;
    background: var(--white);
    border-radius: var(--radius-sm);
}

.preview-label {
    display: block;
    font-size: 0.8rem;
    color: var(--gray-600);
    margin-bottom: 4px;
}

.preview-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark);
}

.pending-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* Meals List */
.meals-list {
    margin-top: 20px;
}

.meal-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    border-left: 4px solid var(--secondary);
}

.meal-info {
    flex: 1;
}

.meal-name {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.meal-macros {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.meal-time {
    font-size: 0.8rem;
    color: var(--gray-500);
}

.meal-actions {
    display: flex;
    gap: 8px;
}

.meal-actions button {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 4px;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.meal-actions button:hover {
    opacity: 1;
}

/* Favorites */
.favorite-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
    border-left: 4px solid var(--accent);
}

/* History */
.history-item {
    padding: 14px;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
}

.history-date {
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.history-macros {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    font-size: 0.9rem;
}

.history-macros span {
    color: var(--gray-600);
}

.history-macros .achieved {
    color: var(--success);
}

.history-macros .over {
    color: var(--danger);
}

/* Settings */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.setting-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.setting-item label {
    font-weight: 500;
    color: var(--gray-700);
}

.setting-item input {
    padding: 12px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
}

.setting-item input:focus {
    outline: none;
    border-color: var(--primary);
}

.settings-divider {
    height: 1px;
    background: var(--gray-300);
    margin: 30px 0;
}

.quick-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--dark);
    color: var(--white);
    padding: 14px 28px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: transform 0.3s ease;
}

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

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

.toast.error {
    background: var(--danger);
}

/* Empty State */
.empty-state {
    text-align: center;
    color: var(--gray-500);
    padding: 30px;
    font-style: italic;
}

/* Hidden */
.hidden {
    display: none !important;
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--white);
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 0.8s linear infinite;
}

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

/* Footer */
.app-footer {
    text-align: center;
    padding: 20px;
    color: var(--gray-500);
    font-size: 0.85rem;
}

/* Responsive */
@media (max-width: 600px) {
    .app-header h1 {
        font-size: 1.8rem;
    }

    .input-group {
        flex-direction: column;
    }

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

    .pending-actions .btn {
        width: 100%;
    }

    .tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab {
        flex-shrink: 0;
        min-width: 80px;
        font-size: 0.8rem;
        padding: 10px 12px;
    }
}