/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    --sidebar-width: 340px;
    --primary: #7dd3fc;
    --primary-dark: #0ea5e9;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-input: #334155;
    --border: rgba(255, 255, 255, 0.08);
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
}

/* ============================================
   RESET & BASE
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    -webkit-tap-highlight-color: transparent;
}

/* ============================================
   3D CANVAS
   ============================================ */
#canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    right: var(--sidebar-width);
    height: 100%;
    z-index: 1;
}

#canvas-container canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}

/* ============================================
   CAMERA CONTROLS
   ============================================ */
#camera-controls {
    position: fixed;
    top: 16px;
    left: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    z-index: 50;
}

.cam-btn {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(10px);
    color: rgba(255, 255, 255, 0.75);
    font-size: 15px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.cam-btn:hover {
    background: rgba(15, 23, 42, 0.85);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.cam-btn:active {
    transform: scale(0.9);
}

/* ============================================
   LOADING SCREEN
   ============================================ */
#loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: var(--bg-dark);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loading.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

#loading p {
    font-size: 14px;
    color: var(--text-muted);
    letter-spacing: 1px;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(125, 211, 252, 0.15);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ============================================
   SIDEBAR — Desktop (sağa sabit)
   ============================================ */
#sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--sidebar-width);
    height: 100%;
    background: var(--bg-card);
    border-left: 1px solid var(--border);
    z-index: 100;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 18px 20px;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    cursor: default;
}

.sidebar-header h2 {
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.sidebar-collapse-btn {
    display: none;
    /* Masaüstünde gizli */
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    cursor: pointer;
    padding: 4px;
    transition: color 0.2s;
}

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

.sidebar-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    overscroll-behavior: contain;
}

/* Scrollbar */
.sidebar-body::-webkit-scrollbar {
    width: 5px;
}

.sidebar-body::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-body::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

/* ============================================
   CONTROL SECTIONS
   ============================================ */
.control-section {
    margin-bottom: 20px;
}

.section-title {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

/* ============================================
   SLIDER CONTROLS
   ============================================ */
.control-group {
    margin-bottom: 16px;
}

.control-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-size: 13px;
}

.control-label span:first-child {
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 6px;
}

.control-label i {
    font-size: 12px;
    color: var(--text-muted);
}

.control-value {
    font-weight: 700;
    color: var(--primary);
    font-size: 14px;
    background: rgba(125, 211, 252, 0.1);
    padding: 3px 10px;
    border-radius: 6px;
    min-width: 70px;
    text-align: center;
}

/* Range Input */
.range-wrap {
    position: relative;
    padding-bottom: 18px;
}

.range-wrap input[type="range"] {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    appearance: none;
    background: var(--bg-input);
    border-radius: 4px;
    outline: none;
    cursor: pointer;
    position: relative;
    z-index: 2;
}

.range-wrap input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    background: var(--primary);
    border-radius: 50%;
    cursor: grab;
    box-shadow: 0 2px 8px rgba(125, 211, 252, 0.4);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.range-wrap input[type="range"]::-webkit-slider-thumb:active {
    cursor: grabbing;
    transform: scale(1.2);
    box-shadow: 0 3px 12px rgba(125, 211, 252, 0.6);
}

.range-wrap input[type="range"]::-moz-range-thumb {
    width: 22px;
    height: 22px;
    background: var(--primary);
    border: none;
    border-radius: 50%;
    cursor: grab;
    box-shadow: 0 2px 8px rgba(125, 211, 252, 0.4);
}

/* Range Ticks */
.range-ticks {
    display: flex;
    justify-content: space-between;
    padding: 0 2px;
    margin-top: 6px;
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 1;
}

.range-ticks .tick {
    font-size: 10px;
    color: var(--text-muted);
    text-align: center;
    opacity: 0.6;
    transition: opacity 0.2s, color 0.2s;
    cursor: pointer;
    padding: 2px 0;
    user-select: none;
}

.range-ticks .tick.active {
    color: var(--primary);
    opacity: 1;
    font-weight: 600;
}

/* ============================================
   DIMENSION SUMMARY BAR
   ============================================ */
.dimension-summary {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px;
    background: var(--bg-input);
    border-radius: 10px;
    margin-bottom: 14px;
}

.dim-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.dim-label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
}

.dim-value {
    font-size: 15px;
    font-weight: 700;
    color: var(--primary);
}

.dim-sep {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 300;
}

.dim-unit {
    font-size: 11px;
    color: var(--text-muted);
    margin-left: 4px;
}

/* ============================================
   INFO BANNER
   ============================================ */
.info-banner {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 12px;
    background: rgba(125, 211, 252, 0.06);
    border: 1px solid rgba(125, 211, 252, 0.12);
    border-radius: 8px;
    font-size: 11px;
    line-height: 1.5;
    color: var(--text-muted);
}

.info-banner i {
    color: var(--primary);
    margin-top: 2px;
    flex-shrink: 0;
}

/* ============================================
   SECTION DIVIDER
   ============================================ */
.section-divider {
    height: 1px;
    background: var(--border);
    margin: 16px 0;
}

/* ============================================
   COATING SELECTOR
   ============================================ */
.coating-selector {
    display: flex;
    gap: 8px;
}

.coating-btn {
    flex: 1;
    padding: 12px 8px;
    background: var(--bg-input);
    border: 2px solid transparent;
    border-radius: 10px;
    color: var(--text-muted);
    font-size: 11px;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.coating-btn i {
    font-size: 20px;
}

.coating-btn span {
    font-weight: 500;
}

.coating-btn:hover {
    border-color: var(--border);
    background: var(--bg-card);
    color: var(--text);
}

.coating-btn.active {
    border-color: var(--primary);
    background: rgba(125, 211, 252, 0.1);
    color: var(--primary);
}

/* ============================================
   COLOR PALETTE
   ============================================ */
.color-section {
    transition: opacity 0.3s ease;
}

.color-section.disabled {
    opacity: 0.35;
    pointer-events: none;
}

.color-name-tag {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 10px;
    padding: 6px 10px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: 6px;
    text-align: center;
    letter-spacing: 0.3px;
}

.color-palette {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.color-swatch {
    width: 25px;
    height: 25px;
    border-radius: 4px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
    position: relative;
}

.color-swatch:hover {
    transform: scale(1.15);
    z-index: 5;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.5);
}

.color-swatch.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(125, 211, 252, 0.4), 0 4px 12px rgba(0, 0, 0, 0.3);
}

.color-swatch.active::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 10px;
    font-weight: 700;
    color: white;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.6);
}

/* ============================================
   AKSESUARLAR
   ============================================ */
.accessory-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.accessory-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 8px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 60px;
}

.accessory-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
    border-color: var(--primary);
}

.accessory-btn.active {
    background: rgba(14, 165, 233, 0.15);
    border-color: var(--primary);
    color: var(--primary);
}

.accessory-btn.disabled,
.accessory-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    pointer-events: none;
}

.accessory-btn i {
    font-size: 14px;
}

.placing-info {
    margin-top: 8px;
    padding: 8px 12px;
    border-radius: 6px;
    background: rgba(0, 255, 136, 0.08);
    border: 1px solid rgba(0, 255, 136, 0.25);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    font-size: 12px;
    color: #00ff88;
}

.wall-select-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
}

.wall-select-label {
    font-size: 11px;
    color: var(--text-muted);
}

.wall-select-buttons {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.wall-select-btn {
    flex: 1;
    min-width: 60px;
    padding: 6px 10px;
    border: 1px solid rgba(0, 255, 136, 0.3);
    border-radius: 6px;
    background: rgba(0, 255, 136, 0.08);
    color: #00ff88;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
}

.wall-select-btn:hover {
    background: rgba(0, 255, 136, 0.2);
    border-color: #00ff88;
}

.wall-select-btn:active {
    transform: scale(0.95);
}

.cancel-placing-btn {
    padding: 4px 10px;
    border: 1px solid rgba(255, 100, 100, 0.4);
    border-radius: 4px;
    background: rgba(255, 100, 100, 0.1);
    color: #ff6464;
    font-size: 11px;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.cancel-placing-btn:hover {
    background: rgba(255, 100, 100, 0.25);
}

.placed-items-list {
    margin-top: 8px;
}

.placed-item-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 10px;
    margin-bottom: 4px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 12px;
    color: var(--text-secondary);
}

.placed-item-row .item-label {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-wrap: wrap;
}

.placed-item-row .item-label i {
    color: var(--primary);
    font-size: 12px;
}

.item-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}

.variant-toggle-btn {
    background: rgba(0, 180, 255, 0.1);
    border: 1px solid rgba(0, 180, 255, 0.3);
    color: #00b4ff;
    cursor: pointer;
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all 0.15s ease;
}

.variant-toggle-btn:hover {
    background: rgba(0, 180, 255, 0.25);
    border-color: #00b4ff;
}

.variant-badge {
    font-size: 10px;
    padding: 1px 5px;
    border-radius: 3px;
    background: rgba(0, 180, 255, 0.12);
    color: #00b4ff;
    border: 1px solid rgba(0, 180, 255, 0.25);
}

.placed-item-row .remove-item-btn {
    background: none;
    border: none;
    color: #ff6464;
    cursor: pointer;
    font-size: 12px;
    padding: 2px 6px;
    border-radius: 4px;
    transition: all 0.15s ease;
}

.placed-item-row .remove-item-btn:hover {
    background: rgba(255, 100, 100, 0.2);
}

/* ============================================
   QUOTE / TEKLİF BUTONU
   ============================================ */
.quote-section {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.quote-btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.2s ease;
    box-shadow: 0 4px 14px rgba(34, 197, 94, 0.3);
}

.quote-btn:hover {
    background: linear-gradient(135deg, #16a34a, #15803d);
    box-shadow: 0 6px 20px rgba(34, 197, 94, 0.4);
    transform: translateY(-1px);
}

.quote-btn:active {
    transform: translateY(0);
}

/* ============================================
   QUOTE MODAL
   ============================================ */
.quote-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    z-index: 9000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.quote-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.quote-modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    width: 90%;
    max-width: 560px;
    max-height: 85vh;
    overflow: hidden;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.5);
}

.quote-page {
    display: none;
}

.quote-page.active {
    display: block;
}

.quote-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border);
}

.quote-modal-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.quote-close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}

.quote-close-btn:hover {
    color: #ff6464;
}

.quote-modal-body {
    padding: 20px 24px;
    overflow-y: auto;
    max-height: calc(85vh - 70px);
}

/* Config Summary */
.config-summary {
    margin-bottom: 20px;
    padding: 14px;
    background: rgba(125, 211, 252, 0.06);
    border: 1px solid rgba(125, 211, 252, 0.12);
    border-radius: 10px;
}

.config-summary h4 {
    font-size: 13px;
    color: var(--primary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.config-row {
    display: flex;
    justify-content: space-between;
    padding: 5px 0;
    font-size: 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.config-row:last-child {
    border-bottom: none;
}

.config-row .config-label {
    color: var(--text-muted);
}

.config-row .config-value {
    color: var(--text);
    font-weight: 500;
    background: none;
    padding: 0;
    min-width: auto;
    font-size: 12px;
}

/* Form */
.quote-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form-group label {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.25);
}

/* KVKK */
.kvkk-group {
    margin-top: 4px;
}

.kvkk-label {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 12px !important;
    color: var(--text-secondary) !important;
    cursor: default;
}

.kvkk-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: #22c55e;
    cursor: default;
}

.kvkk-label input[type="checkbox"]:not(:disabled) {
    cursor: pointer;
}

.kvkk-link {
    background: none;
    border: none;
    color: var(--primary);
    font-size: 12px;
    cursor: pointer;
    text-decoration: underline;
    padding: 0;
    margin-left: 4px;
}

.kvkk-link:hover {
    color: #fff;
}

/* Submit */
.quote-submit-btn {
    padding: 14px;
    border: none;
    border-radius: 10px;
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
    margin-top: 6px;
}

.quote-submit-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.quote-submit-btn:not(:disabled):hover {
    box-shadow: 0 6px 20px rgba(34, 197, 94, 0.4);
    transform: translateY(-1px);
}

/* KVKK Page */
.kvkk-body {
    display: flex;
    flex-direction: column;
}

.kvkk-text {
    padding: 6px 0;
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-secondary);
}

.kvkk-text h4 {
    font-size: 15px;
    color: var(--text);
    margin-bottom: 12px;
}

.kvkk-text h5 {
    font-size: 13px;
    color: var(--primary);
    margin: 14px 0 6px;
}

.kvkk-text p {
    margin-bottom: 8px;
}

.kvkk-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.kvkk-back-btn,
.kvkk-accept-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.kvkk-back-btn {
    background: var(--bg-input);
    color: var(--text-muted);
    border: 1px solid var(--border);
}

.kvkk-back-btn:hover {
    color: var(--text);
    border-color: var(--text-muted);
}

.kvkk-accept-btn {
    background: linear-gradient(135deg, #22c55e, #16a34a);
    color: #fff;
}

.kvkk-accept-btn:hover {
    box-shadow: 0 4px 14px rgba(34, 197, 94, 0.4);
}

/* ============================================
   ITEM TOOLTIP
   ============================================ */
.item-tooltip {
    position: fixed;
    padding: 6px 12px;
    background: rgba(15, 23, 42, 0.92);
    color: #fff;
    font-size: 12px;
    border-radius: 6px;
    pointer-events: none;
    z-index: 1000;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
}

/* ============================================
   MOBILE FAB BUTTON
   ============================================ */
#mobile-fab {
    display: none;
    /* Masaüstünde gizli */
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--bg-dark);
    font-size: 22px;
    cursor: pointer;
    z-index: 90;
    box-shadow: 0 4px 16px rgba(14, 165, 233, 0.4);
    transition: transform 0.2s, box-shadow 0.2s;
    touch-action: manipulation;
    pointer-events: auto;
    -webkit-user-select: none;
    user-select: none;
}

#mobile-fab:active {
    transform: scale(0.9);
}

/* ============================================
   MOBILE OVERLAY
   ============================================ */
#sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 95;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    display: none;
    /* Masaüstünde tamamen gizli */
}

#sidebar-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* ============================================
   MOBILE RESPONSIVE
   ============================================ */
@media (max-width: 768px) {

    /* Canvas tam ekran */
    #canvas-container {
        right: 0;
    }

    /* FAB butonu göster */
    #mobile-fab {
        display: flex !important;
        align-items: center;
        justify-content: center;
    }

    /* Sidebar alt drawer olarak */
    #sidebar {
        top: auto;
        bottom: 0;
        left: 0;
        right: 0;
        width: 100%;
        height: 70vh;
        border-left: none;
        border-top: 1px solid var(--border);
        border-radius: 20px 20px 0 0;
        transform: translateY(100%);
        z-index: 200;
    }

    #sidebar.open {
        transform: translateY(0);
    }

    /* Collapse butonu göster */
    .sidebar-collapse-btn {
        display: block;
    }

    /* Header dokunarak kapatma ipucu */
    .sidebar-header {
        cursor: pointer;
        position: relative;
    }

    .sidebar-header::before {
        content: '';
        position: absolute;
        top: 8px;
        left: 50%;
        transform: translateX(-50%);
        width: 36px;
        height: 4px;
        background: rgba(255, 255, 255, 0.2);
        border-radius: 2px;
    }

    /* Overlay göster */
    #sidebar-overlay {
        display: block !important;
    }

    /* FAB gizle sidebar açıkken */
    body.sidebar-open #mobile-fab {
        display: none;
    }
}

/* Küçük mobil ekranlar */
@media (max-width: 480px) {
    #sidebar {
        height: 80vh;
    }

    .control-value {
        font-size: 13px;
        min-width: 60px;
    }

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

    .quote-modal {
        width: 95%;
        max-height: 90vh;
    }

    .quote-modal-body {
        padding: 16px;
    }
}