/* CSS Custom Properties - scoped to .gpx-tool */
/* Light: Material palette to match site */
.gpx-tool {
    --color-primary: #6200ea;
    --color-primary-hover: #4a00b0;
    --color-secondary: #757575;
    --color-secondary-hover: #616161;
    --color-success: #22c55e;
    --color-error: #ef4444;
    --color-background: #ffffff;
    --color-surface: #fafafa;
    --color-text: #212121;
    --color-text-muted: #757575;
    --color-border: #e0e0e0;
    --color-selection: rgba(98, 0, 234, 0.15);
    --color-chart-line: #6200ea;
    --color-chart-fill: rgba(98, 0, 234, 0.1);
    --color-row-uphill: rgba(239, 68, 68, 0.05);
    --color-row-downhill: rgba(34, 197, 94, 0.05);
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --border-radius: 8px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --font-family: Verdana, Geneva, Tahoma, sans-serif;
    --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;
}

/* Dark: Dracula palette to match site */
@media (prefers-color-scheme: dark) {
    .gpx-tool {
        --color-primary: #bd93f9;
        --color-primary-hover: #caa8fc;
        --color-secondary: #6272a4;
        --color-secondary-hover: #7283b5;
        --color-success: #50fa7b;
        --color-error: #ff5555;
        --color-background: #282a36;
        --color-surface: #343746;
        --color-text: #f8f8f2;
        --color-text-muted: #6272a4;
        --color-border: #44475a;
        --color-selection: rgba(189, 147, 249, 0.2);
        --color-chart-line: #bd93f9;
        --color-chart-fill: rgba(189, 147, 249, 0.15);
        --color-row-uphill: rgba(255, 85, 85, 0.1);
        --color-row-downhill: rgba(80, 250, 123, 0.1);
        --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    }
}

/* Scoped reset */
.gpx-tool *, .gpx-tool *::before, .gpx-tool *::after {
    box-sizing: border-box;
}

/* Main Content (replaces .main) */
.gpx-tool {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
    font-family: var(--font-family);
    color: var(--color-text);
}

.gpx-tool__subtitle {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 1rem;
    margin: 0 0 var(--spacing-md);
}

.gpx-tool__controls {
    display: flex;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

/* Unit Toggle */
.unit-toggle {
    display: inline-flex;
    background-color: var(--color-background);
    border-radius: var(--border-radius);
    padding: var(--spacing-xs);
    gap: var(--spacing-xs);
}

.unit-toggle__btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: calc(var(--border-radius) - 2px);
    background-color: transparent;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
}

.unit-toggle__btn:hover {
    color: var(--color-text);
}

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

.unit-toggle__btn--active:hover {
    background-color: var(--color-primary-hover);
    color: white;
}

/* Sections */
.section {
    background-color: var(--color-surface);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

.section--disabled {
    opacity: 0.5;
    pointer-events: none;
}

.section__title {
    margin: 0 0 var(--spacing-md);
    font-size: 1.25rem;
    font-weight: 600;
}

.section__description {
    margin: 0 0 var(--spacing-md);
    color: var(--color-text-muted);
}

/* Upload Area */
.upload-area {
    position: relative;
    border: 2px dashed var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    text-align: center;
    transition: border-color 0.2s, background-color 0.2s;
    cursor: pointer;
}

.upload-area:hover,
.upload-area--dragover {
    border-color: var(--color-primary);
    background-color: var(--color-selection);
}

.upload-area__input {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.upload-area__label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.upload-area__icon {
    font-size: 2rem;
}

.upload-area__text {
    color: var(--color-text-muted);
}

.upload-status {
    margin-top: var(--spacing-md);
    text-align: center;
    font-weight: 500;
}

.upload-status--success {
    color: var(--color-success);
}

.upload-status--error {
    color: var(--color-error);
}

/* Settings Grid */
.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

/* Form Groups */
.form-group {
    display: flex;
    flex-direction: column;
}

.form-group__label {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.form-group__input,
.form-group__select {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--color-surface);
    color: var(--color-text);
    transition: border-color 0.2s;
}

.form-group__input:focus,
.form-group__select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-selection);
}

.form-group__hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--spacing-xs);
}

/* Profile Container */
.profile-container {
    position: relative;
    background-color: var(--color-background);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
}

.profile-container__canvas {
    width: 100%;
    height: 250px;
    cursor: crosshair;
}

.profile-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.profile-info__actions {
    display: flex;
    gap: var(--spacing-sm);
}

/* Waypoint Selector */
.waypoint-selector {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-background);
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.waypoint-selector__header {
    margin-bottom: var(--spacing-sm);
}

.waypoint-selector__title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-muted);
}

.waypoint-selector__controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    align-items: flex-end;
}

.waypoint-selector__field {
    display: flex;
    flex-direction: column;
    flex: 1;
    min-width: 150px;
}

.waypoint-selector__label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.waypoint-selector__select {
    width: 100%;
}

/* Profile Stats */
.profile-stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.stat {
    display: flex;
    flex-direction: column;
    min-width: 100px;
}

.stat__label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat__value {
    font-size: 1.125rem;
    font-weight: 600;
    font-family: var(--font-family-mono);
}

/* Share Link */
.share-link {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.share-link__controls {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.share-link__name {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-family: inherit;
    background-color: var(--color-surface);
    color: var(--color-text);
}

.share-link__note {
    margin: var(--spacing-xs) 0 0;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.share-link__output {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    align-items: center;
}

.share-link__input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-family-mono);
    font-size: 0.75rem;
    background-color: var(--color-background);
    color: var(--color-text);
    min-width: 0;
}

@media (max-width: 600px) {
    .share-link__output {
        flex-direction: column;
    }

    .share-link__input {
        width: 100%;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

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

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

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

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

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

.btn--small {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
}

.btn--large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.125rem;
}

/* Toggle Button */
.toggle-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    background-color: transparent;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
}

.toggle-btn:hover {
    color: var(--color-text);
}

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

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

/* Generate Options */
.generate-options {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-md);
}

.generate-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    cursor: pointer;
}

.generate-option__input {
    width: 4em;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.875rem;
}

/* Results */
.results-summary {
    background-color: var(--color-background);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-family-mono);
    font-size: 0.875rem;
}

.summary-row {
    margin-bottom: var(--spacing-xs);
}

.summary-row:last-child {
    margin-bottom: 0;
}

.summary-row--elevation {
    padding-top: var(--spacing-xs);
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-sm);
}

.summary-label {
    font-weight: 600;
}

/* Elevation Difference Indicators */
.elevation-diff {
    font-size: 0.75rem;
    margin-left: var(--spacing-xs);
    white-space: nowrap;
}

.diff--positive {
    color: var(--color-error);
}

.diff--negative {
    color: var(--color-success);
}

.results-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

/* Table */
.table-container {
    overflow-x: auto;
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-family-mono);
    font-size: 0.875rem;
}

.results-table th,
.results-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: right;
    border-bottom: 1px solid var(--color-border);
}

.results-table th {
    background-color: var(--color-background);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    position: sticky;
    top: 0;
}

.results-table th:first-child,
.results-table td:first-child {
    text-align: left;
}

.results-table tbody tr:hover {
    background-color: var(--color-selection);
}

.results-table tbody tr.row--uphill {
    background-color: var(--color-row-uphill);
}

.results-table tbody tr.row--downhill {
    background-color: var(--color-row-downhill);
}

/* Responsive */
@media (max-width: 600px) {
    .section {
        padding: var(--spacing-md);
    }

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

    .profile-stats {
        justify-content: space-between;
    }

    .stat {
        min-width: auto;
        flex: 1 1 45%;
    }

    .profile-container {
        margin-left: calc(-1 * var(--spacing-md));
        margin-right: calc(-1 * var(--spacing-md));
        padding-left: 0;
        padding-right: 0;
        border-radius: 0;
        overflow-x: auto;
    }

    .profile-container__canvas {
        min-width: 600px;
    }

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

    .btn--large {
        width: 100%;
    }
}