/* Snackalyzer Styles - Clean, Fast, Minimal */

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

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --success-color: #10b981;
    --error-color: #ef4444;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    padding: 16px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 20px;
    padding: 12px 20px;
}

h1 {
    font-size: 1.75rem;
    margin-bottom: 4px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

section {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow);
}

h2 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.section-header h2 {
    margin-bottom: 0;
}

.section-header .btn-secondary {
    margin-bottom: 0;
}

/* Tooltip */
.tooltip-container {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.tooltip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--text-secondary);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    cursor: help;
    transition: background-color 0.2s;
}

.tooltip-icon:hover {
    background: var(--primary-color);
}

.tooltip-text {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    left: 50%;
    top: calc(100% + 8px);
    transform: translateX(calc(16px - 50%));
    background: var(--text-primary);
    color: white;
    padding: 10px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 400;
    white-space: normal;
    width: 240px;
    text-align: left;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    transition: opacity 0.2s, visibility 0.2s;
    pointer-events: none;
}

.tooltip-text::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 41%;
    border: 6px solid transparent;
    border-bottom-color: var(--text-primary);
}

.tooltip-container:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* Input Section */
.input-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

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

label {
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

input[type="number"] {
    padding: 10px 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-color);
}

.btn-primary {
    width: 100%;
    padding: 14px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

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

.btn-secondary {
    padding: 8px 16px;
    background: var(--bg-color);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 16px;
}

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

.btn-primary:active,
.btn-secondary:active {
    transform: scale(0.98);
}

.more-options {
    margin-top: 12px;
    cursor: pointer;
}

.more-options summary {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    user-select: none;
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 0;
}

.more-options summary::-webkit-details-marker {
    display: none;
}

.more-options summary::before {
    content: '▶';
    font-size: 0.7rem;
    transition: transform 0.2s;
    display: inline-block;
}

.more-options[open] summary::before {
    transform: rotate(90deg);
}

.more-options summary:hover {
    color: var(--text-primary);
}

.checkbox-group {
    margin-top: 12px;
    padding: 12px;
    background: var(--bg-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 0.95rem;
}

.checkbox-group input[type="checkbox"],
.snack-controls input[type="checkbox"],
.snack-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

/* Results Section */
.results-section {
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.export-btn {
    margin-bottom: 20px;
    width: 100%;
}

.snack-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: var(--bg-color);
    border-radius: 8px;
    margin-bottom: 10px;
    border-left: 4px solid var(--success-color);
    transition: opacity 0.3s, transform 0.3s, margin-bottom 0.3s, max-height 0.3s, padding 0.3s;
    max-height: 200px;
    overflow: hidden;
}

.snack-item.removing {
    opacity: 0;
    transform: translateX(100%);
    margin-bottom: 0;
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
}

.snack-info {
    flex: 1;
}

.snack-actions {
    display: flex;
    gap: 8px;
    margin-left: 12px;
}

.thumbs-down-btn {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background-color 0.2s, transform 0.1s;
    color: var(--text-secondary);
}

.thumbs-down-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.thumbs-down-btn:active {
    transform: scale(0.95);
}

.snack-name {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 2px;
}

.snack-quantity {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.snack-macros {
    display: flex;
    gap: 10px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.totals-card {
    margin-bottom: 16px;
    padding: 16px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 12px;
}

.totals-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

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

.total-label {
    font-size: 0.8rem;
    opacity: 0.9;
    margin-bottom: 3px;
}

.total-value {
    font-size: 1.3rem;
    font-weight: 700;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 16px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Error State */
.error {
    background: #fee;
    border-left: 4px solid var(--error-color);
    color: #c00;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text-primary);
    color: white;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    opacity: 0;
    transition: opacity 0.3s, transform 0.3s;
    pointer-events: none;
}

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

/* Hamburger Menu */
.hamburger-menu {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    width: 40px;
    height: 40px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 6px;
    padding: 8px;
    box-shadow: var(--shadow);
    transition: background 0.2s;
}

.hamburger-menu:hover {
    background: var(--bg-color);
}

.hamburger-menu span {
    width: 20px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* Sidebar */
.sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: -320px;
    width: 320px;
    background: var(--card-bg);
    box-shadow: var(--shadow-lg);
    z-index: 1002;
    transition: left 0.3s ease;
    overflow-y: auto;
    padding: 20px;
}

.sidebar.open {
    left: 0;
}

.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.sidebar-overlay.open {
    opacity: 1;
    visibility: visible;
}

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

.sidebar-header h3 {
    font-size: 1.25rem;
    margin: 0;
}

.close-sidebar {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

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

.snack-controls {
    margin-top: 12px;
    padding: 12px;
    background: var(--bg-color);
    border-radius: 8px;
}

.snack-controls label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
}

.snack-list {
    margin-top: 16px;
    display: grid;
    gap: 12px;
}

.snack-list-item {
    background: var(--bg-color);
    border-radius: 8px;
    font-size: 0.9rem;
}

.snack-checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.snack-checkbox-label:hover {
    background: var(--border-color);
}

.snack-checkbox {
    flex-shrink: 0;
}

.snack-list-content {
    flex: 1;
}

.snack-list-name {
    font-weight: 600;
    margin-bottom: 4px;
}

.snack-list-macros {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.no-snacks-message {
    text-align: center;
    color: var(--text-secondary);
    padding: 20px;
    font-style: italic;
}

/* Responsive */
@media (max-width: 600px) {
    body {
        padding: 12px;
        line-height: 1.5;
    }

    .hamburger-menu {
        top: 12px;
        left: 12px;
        width: 36px;
        height: 36px;
    }

    .sidebar {
        width: 280px;
        left: -280px;
        padding: 16px;
    }

    header {
        margin-bottom: 12px;
        padding: 8px 12px;
    }

    h1 {
        font-size: 1.5rem;
        margin-bottom: 2px;
    }

    .subtitle {
        font-size: 0.85rem;
    }

    section {
        padding: 16px;
        margin-bottom: 12px;
        border-radius: 8px;
    }

    h2 {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }

    .input-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
        margin-bottom: 12px;
    }

    label {
        font-size: 0.85rem;
        margin-bottom: 4px;
    }

    input[type="number"] {
        padding: 8px 10px;
        font-size: 0.95rem;
    }

    .btn-secondary {
        padding: 6px 12px;
        font-size: 0.85rem;
        margin-bottom: 12px;
    }

    .more-options {
        margin-top: 8px;
    }

    .more-options summary {
        font-size: 0.85rem;
        padding: 6px 0;
    }

    .checkbox-group {
        margin-top: 8px;
        padding: 10px;
    }

    .checkbox-group label {
        font-size: 0.85rem;
    }

    .totals-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }

    .snack-item {
        padding: 10px;
        margin-bottom: 8px;
    }

    .snack-name {
        font-size: 0.95rem;
        margin-bottom: 2px;
    }

    .snack-quantity {
        font-size: 0.8rem;
    }

    .snack-macros {
        font-size: 0.8rem;
        gap: 8px;
    }

    .totals-card {
        margin-bottom: 12px;
        padding: 12px;
    }

    .total-label {
        font-size: 0.75rem;
        margin-bottom: 2px;
    }

    .total-value {
        font-size: 1.2rem;
    }
}