/* Configuration Panel */
.config-panel {
    width: 450px;
    background: var(--panel-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.config-header {
    padding: var(--spacing-lg);
    border-bottom: 2px solid var(--accent-color);
    background: var(--accent-color);
    color: white;
}

.config-header h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.config-subtitle {
    font-size: 13px;
    opacity: 0.9;
    font-weight: 400;
}

.config-content {
    flex: 1;
    padding: var(--spacing-md);
}

/* Configuration Sections */
.config-section {
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: 16px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
    color: var(--accent-color);
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: var(--spacing-xs);
}

.section-content {
    padding: var(--spacing-sm) 0;
}

/* File List */
.file-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.file-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm);
    background: var(--bg-color);
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    transition: all 0.2s ease;
}

.file-item:hover {
    border-color: var(--primary-color);
}

.file-item.selected {
    border-color: var(--primary-color);
    background: #e8f4f8;
}

.file-checkbox {
    margin-right: var(--spacing-sm);
    cursor: pointer;
    width: 18px;
    height: 18px;
}

.file-info {
    flex: 1;
}

.file-name {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 2px;
}

.file-count {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Marker Configuration */
.marker-config {
    background: var(--bg-color);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    border-left: 4px solid var(--primary-color);
}

.marker-config-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.marker-config-title {
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
}

.marker-config-body {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

/* Form Groups */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.form-group input[type="text"]:focus,
.form-group input[type="number"]:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-group input[type="color"] {
    width: 60px;
    height: 36px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.help-text {
    font-size: 11px;
    color: var(--text-secondary);
    font-style: italic;
}

/* Export Actions */
.export-actions {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
}

.export-actions .btn {
    flex: 1;
}

/* Preview Panel */
.preview-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-color);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: white;
    border-bottom: 1px solid var(--border-color);
}

.preview-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.map-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1%;
    background: var(--bg-color);
}

.map-container {
    width: 100%;
    height: 100%;
    position: relative;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

#map {
    width: 100%;
    height: 100%;
}

.preview-info {
    padding: var(--spacing-md) var(--spacing-lg);
    background: white;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
}

/* Loading State */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    color: var(--text-secondary);
}

/* Empty State */
.empty-state {
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-sm);
    opacity: 0.3;
}

.empty-state-text {
    font-size: 14px;
}

/* ========================================
   RESPONSIVE DESIGN - MOBILE FIRST
   ======================================== */

/* Tablet and below (max-width: 1024px) */
@media (max-width: 1024px) {
    .app-container {
        flex-direction: column;
    }

    .config-panel {
        width: 100%;
        border-right: none;
        border-bottom: 2px solid var(--border-color);
        max-height: none;
        overflow-y: visible;
    }

    .config-header h1 {
        font-size: 20px;
    }

    .preview-panel {
        width: 100%;
        min-height: 500px;
    }

    .map-wrapper {
        min-height: 450px;
    }

    .map-container {
        min-height: 400px;
    }
}

/* Mobile devices (max-width: 768px) */
@media (max-width: 768px) {
    .config-header {
        padding: var(--spacing-md);
    }

    .config-header h1 {
        font-size: 18px;
    }

    .config-subtitle {
        font-size: 12px;
    }

    .config-content {
        padding: var(--spacing-sm);
    }

    .section-title {
        font-size: 14px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .marker-config {
        padding: var(--spacing-sm);
    }

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

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

    .preview-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .preview-header h2 {
        font-size: 16px;
    }

    .map-wrapper {
        padding: 2%;
        min-height: 350px;
    }

    .map-container {
        min-height: 300px;
    }

    .preview-info {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 11px;
    }
}

/* Small mobile devices (max-width: 480px) */
@media (max-width: 480px) {
    :root {
        --spacing-xs: 6px;
        --spacing-sm: 10px;
        --spacing-md: 16px;
        --spacing-lg: 24px;
    }

    .config-header h1 {
        font-size: 16px;
    }

    .section-title {
        font-size: 13px;
    }

    .file-name {
        font-size: 13px;
    }

    .file-count {
        font-size: 11px;
    }

    .form-group label {
        font-size: 12px;
    }

    .form-group input[type="text"],
    .form-group input[type="number"],
    .form-group select {
        font-size: 13px;
        padding: 6px 10px;
    }

    .btn {
        padding: 10px 20px;
        font-size: 13px;
    }

    .map-wrapper {
        padding: 2%;
        min-height: 280px;
    }

    .map-container {
        min-height: 250px;
    }
}

/* Landscape orientation on mobile */
@media (max-height: 600px) and (orientation: landscape) {
    .app-container {
        flex-direction: row;
    }

    .config-panel {
        width: 40%;
        max-width: 400px;
        border-right: 1px solid var(--border-color);
        border-bottom: none;
        overflow-y: auto;
        max-height: 100vh;
    }

    .preview-panel {
        width: 60%;
    }

    .map-wrapper {
        min-height: 280px;
    }

    .map-container {
        min-height: 250px;
    }
}

/* Print styles */
@media print {
    .config-panel {
        display: none;
    }

    .preview-panel {
        width: 100%;
    }

    .preview-header,
    .preview-info {
        display: none;
    }

    .map-wrapper {
        padding: 0;
    }

    .map-container {
        box-shadow: none;
        border-radius: 0;
    }
}