/* Modern Ultra Responsive Calculator CSS v2.1.0 */
:root {
    --primary-color: #3b82f6;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --border-color: #e5e7eb;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

#uc-ultrasonic-calculator-container {
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: var(--spacing-md);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-dark);
    background: #fff;
}

.calculator-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    width: 100%;
}

/* Header */
.calculator-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: var(--spacing-lg);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.header-title h2 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 700;
    margin: 0;
}

.header-title h3 {
    font-size: clamp(0.875rem, 2vw, 1rem);
    font-weight: 400;
    opacity: 0.9;
    margin: var(--spacing-xs) 0 0 0;
}

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

.currency-badge {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: clamp(0.75rem, 1.5vw, 0.875rem);
    font-weight: 600;
    white-space: nowrap;
}

.currency-badge .rate {
    display: inline-block;
    margin-left: var(--spacing-xs);
    opacity: 0.9;
}

/* Body */
.calculator-body {
    padding: var(--spacing-md);
}

.modern-form {
    width: 100%;
}

/* Form Sections */
.form-section {
    margin-bottom: var(--spacing-lg);
    background: var(--bg-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.section-title {
    font-size: clamp(1rem, 2vw, 1.125rem);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Bag Type Image */
.bag-type-preview {
    width: 100%;
    max-width: 200px;
    margin: var(--spacing-md) auto;
    display: none;
    text-align: center;
}

.bag-type-preview.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

.bag-type-preview img {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 4px 6px rgba(0, 0, 0, 0.1));
}

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

/* Form Grid - Responsive */
.form-grid {
    display: grid;
    gap: var(--spacing-md);
    width: 100%;
}

/* Mobile First - 1 sütun */
.primary-grid,
.dimensions-grid,
.material-grid {
    grid-template-columns: 1fr;
}

/* Tablet - 2 sütun */
@media (min-width: 640px) {
    .primary-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .dimensions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .material-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop - 3 sütun */
@media (min-width: 1024px) {
    .primary-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .dimensions-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .material-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Form Group */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group label {
    font-size: clamp(0.875rem, 1.5vw, 0.9375rem);
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input[type="number"],
.form-group input[type="text"] {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    transition: all 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Select Wrapper */
.select-wrapper {
    position: relative;
    width: 100%;
}

.select-wrapper select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    padding-right: 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    background: white;
    cursor: pointer;
    appearance: none;
    transition: all 0.2s;
}

.select-wrapper::after {
    content: '▼';
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    font-size: 0.75rem;
    color: var(--text-light);
}

.select-wrapper select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* Options Grid */
.options-grid {
    display: grid;
    gap: var(--spacing-md);
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .options-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .options-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Option Card */
.option-card {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    transition: all 0.2s;
}

.option-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

/* Modern Checkbox */
.modern-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.modern-checkbox input[type="checkbox"] {
    display: none;
}

.modern-checkbox .checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s;
}

.modern-checkbox input:checked + .checkmark {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.modern-checkbox .checkmark svg {
    width: 14px;
    height: 14px;
    stroke: white;
    opacity: 0;
    transition: opacity 0.2s;
}

.modern-checkbox input:checked + .checkmark svg {
    opacity: 1;
}

.option-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.option-title {
    font-size: clamp(0.875rem, 1.5vw, 0.9375rem);
    font-weight: 600;
    color: var(--text-dark);
}

.option-desc {
    font-size: clamp(0.75rem, 1.25vw, 0.8125rem);
    color: var(--text-light);
}

/* Buttons */
.action-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

.action-buttons button {
    flex: 1;
    min-width: 120px;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: clamp(0.875rem, 1.5vw, 1rem);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

/* Loading */
.loading {
    text-align: center;
    padding: var(--spacing-xl);
}

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

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

/* Results */
.results-container {
    margin-top: var(--spacing-xl);
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.results-section {
    margin-bottom: var(--spacing-lg);
}

.results-section h4 {
    font-size: clamp(1rem, 2vw, 1.125rem);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-left: 4px solid var(--primary-color);
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: clamp(0.8125rem, 1.5vw, 0.875rem);
}

.results-table tr {
    border-bottom: 1px solid var(--border-color);
}

.results-table th,
.results-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
}

.results-table th {
    font-weight: 600;
    color: var(--text-dark);
    width: 50%;
}

.results-table td {
    color: var(--text-light);
    width: 50%;
    word-break: break-word;
}

.results-table tr.highlight-row {
    background: rgba(59, 130, 246, 0.05);
}

.results-table tr.highlight-row th,
.results-table tr.highlight-row td {
    color: var(--primary-color);
    font-weight: 700;
}

.results-table tr.total-row {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white !important;
}

.results-table tr.total-row th,
.results-table tr.total-row td {
    color: white !important;
    font-weight: 700;
    font-size: clamp(0.9375rem, 1.75vw, 1.0625rem);
}

.results-table tr.discount-row {
    background-color: #e8f5e9;
    font-weight: 500;
}

.results-table tr.discount-row td {
    color: #2e7d32;
}

/* Export Buttons */
.export-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

.export-buttons button {
    flex: 1;
    min-width: 100px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: clamp(0.75rem, 1.25vw, 0.8125rem);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.export-buttons button:hover {
    background: var(--bg-light);
    border-color: var(--text-dark);
}

/* Messages */
.message {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: clamp(0.875rem, 1.5vw, 0.9375rem);
    animation: slideIn 0.3s ease-out;
}

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

.message.success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid #10b981;
}

.message.error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid #ef4444;
}

.message.warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid #f59e0b;
}

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

/* Mobile Optimizations */
@media (max-width: 639px) {
    #uc-ultrasonic-calculator-container {
        padding: var(--spacing-sm);
    }
    
    .calculator-body {
        padding: var(--spacing-sm);
    }
    
    .form-section {
        padding: var(--spacing-sm);
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .action-buttons button {
        width: 100%;
    }
    
    .results-table th,
    .results-table td {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* Print Styles */
@media print {
    .calculator-header,
    .action-buttons,
    .export-buttons,
    .form-section {
        display: none;
    }
    
    .results-container {
        box-shadow: none;
    }
}