/* ============================
   Shoes Virtual Try-On - Frontend CSS
   v2.0 — Comparison slider, social sharing, size recommendation, enhanced mobile
   ============================ */

/* Try-On Button */
.svto-button-wrapper {
    margin: 15px 0;
}

.svto-tryon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(108, 99, 255, 0.3);
    border-radius: 8px;
}

.svto-tryon-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(108, 99, 255, 0.4);
    filter: brightness(1.1);
}

.svto-tryon-button:active {
    transform: translateY(0);
}

/* Modal Overlay */
.svto-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: svtoFadeIn 0.3s ease;
}

@keyframes svtoFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes svtoSlideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.svto-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
}

.svto-modal-container {
    position: relative;
    background: #fff;
    border-radius: 16px;
    width: 90%;
    max-width: 750px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 32px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.3);
    animation: svtoSlideUp 0.4s ease;
}

.svto-modal-close {
    position: absolute;
    top: 16px;
    right: 20px;
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: #666;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    z-index: 10;
}

.svto-modal-close:hover {
    background: #f0f0f0;
    color: #333;
}

.svto-modal-header {
    text-align: center;
    margin-bottom: 24px;
}

.svto-modal-header h2 {
    margin: 0 0 8px;
    font-size: 24px;
    color: #1a1a2e;
}

.svto-modal-subtitle {
    color: #666;
    margin: 0;
    font-size: 14px;
}

/* Upload Area */
.svto-upload-area {
    border: 2px dashed #d0d0e0;
    border-radius: 12px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: #fafafe;
}

.svto-upload-area:hover,
.svto-upload-area.svto-dragover {
    border-color: #6c63ff;
    background: #f0eeff;
}

.svto-upload-icon {
    margin-bottom: 16px;
}

.svto-upload-text {
    font-size: 16px;
    font-weight: 500;
    color: #333;
    margin: 0 0 8px;
}

.svto-upload-or {
    color: #999;
    font-size: 13px;
    margin: 8px 0;
}

.svto-upload-btn {
    display: inline-block;
    padding: 10px 24px;
    background: #6c63ff;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.svto-upload-btn:hover {
    background: #5a52d5;
}

.svto-upload-hint {
    color: #999;
    font-size: 12px;
    margin: 12px 0 0;
}

/* Camera Button (alongside Choose Photo) */
.svto-camera-btn {
    display: inline-block;
    padding: 10px 24px;
    background: #00b894;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    margin-left: 8px;
}

.svto-camera-btn:hover {
    background: #00a383;
}

/* Camera Viewfinder */
.svto-camera-viewfinder {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: #000;
    margin-bottom: 16px;
}

.svto-camera-viewfinder video {
    display: block;
    width: 100%;
    max-height: 450px;
    object-fit: cover;
    border-radius: 12px;
}

.svto-camera-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 16px;
    background: rgba(0, 0, 0, 0.5);
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
}

.svto-cam-ctrl {
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Shutter button (big circle) */
.svto-cam-shutter {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #fff;
    border: 4px solid rgba(255, 255, 255, 0.5) !important;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.svto-cam-shutter:hover {
    transform: scale(1.1);
    box-shadow: 0 0 0 5px rgba(255, 255, 255, 0.4);
}

.svto-cam-shutter:active {
    transform: scale(0.95);
    background: #ddd;
}

/* Cancel & switch buttons */
.svto-cam-cancel,
.svto-cam-switch {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    font-size: 18px;
}

.svto-cam-cancel:hover,
.svto-cam-switch:hover {
    background: rgba(255, 255, 255, 0.35);
}

/* Tips */
.svto-tips {
    margin-top: 20px;
    padding: 16px;
    background: #f8f9ff;
    border-radius: 10px;
    border-left: 4px solid #6c63ff;
}

.svto-tips h4 {
    margin: 0 0 10px;
    font-size: 14px;
    color: #333;
}

.svto-tips ul {
    margin: 0;
    padding-left: 20px;
}

.svto-tips li {
    font-size: 13px;
    color: #555;
    margin-bottom: 6px;
    line-height: 1.4;
}

/* Preview Grid */
.svto-preview-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 24px;
}

.svto-preview-card {
    text-align: center;
    flex: 1;
}

.svto-preview-card h4 {
    margin: 0 0 10px;
    font-size: 14px;
    color: #555;
}

.svto-image-frame {
    border: 2px solid #e0e0e0;
    border-radius: 12px;
    overflow: hidden;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f5f5;
}

.svto-image-frame img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.svto-preview-plus {
    font-size: 32px;
    color: #ccc;
    font-weight: 300;
    flex-shrink: 0;
}

/* Buttons */
.svto-generate-btn {
    display: block;
    width: 100%;
    padding: 16px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #6c63ff, #e91e8c);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 4px 20px rgba(108, 99, 255, 0.35);
}

.svto-generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(108, 99, 255, 0.5);
}

.svto-change-photo {
    display: block;
    margin: 12px auto 0;
    background: none;
    border: none;
    color: #6c63ff;
    cursor: pointer;
    font-size: 14px;
    padding: 8px;
}

.svto-change-photo:hover {
    text-decoration: underline;
}

/* Loading */
.svto-loading-container {
    text-align: center;
    padding: 40px 20px;
}

.svto-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid #eee;
    border-top-color: #6c63ff;
    border-radius: 50%;
    animation: svtoSpin 0.8s linear infinite;
    margin: 0 auto 24px;
}

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

.svto-loading-container h3 {
    margin: 0 0 8px;
    color: #333;
}

.svto-loading-sub {
    color: #999;
    font-size: 14px;
    margin: 0 0 20px;
}

.svto-progress-bar {
    width: 100%;
    height: 6px;
    background: #eee;
    border-radius: 3px;
    overflow: hidden;
    max-width: 300px;
    margin: 0 auto;
}

.svto-progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #6c63ff, #e91e8c);
    border-radius: 3px;
    transition: width 0.5s ease;
}

/* ============================
   SIDE-BY-SIDE BEFORE / AFTER
   ============================ */
.svto-sidebyside {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.svto-sidebyside-card {
    position: relative;
    border-radius: 14px;
    overflow: hidden;
    border: 2px solid #e8e8ef;
    background: #f9f9fc;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.svto-sidebyside-card:hover {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.svto-card-badge {
    display: block;
    text-align: center;
    padding: 8px 0;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.svto-badge-before {
    background: #f1f1f5;
    color: #666;
}

.svto-badge-after {
    background: linear-gradient(135deg, #6c63ff, #e91e8c);
    color: #fff;
}

.svto-card-img-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f5f5f5;
    min-height: 300px;
    max-height: 450px;
}

.svto-card-img-wrap img {
    display: block;
    width: 100%;
    height: 100%;
    max-height: 450px;
    object-fit: contain;
}

.svto-card-after {
    border-color: #d5d0ff;
}

/* Result / Actions */
.svto-result-container {
    text-align: center;
}

.svto-result-container h3 {
    margin: 0 0 20px;
    font-size: 20px;
}

.svto-result-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.svto-btn {
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.2s;
}

.svto-btn-primary {
    background: #6c63ff;
    color: #fff;
}

.svto-btn-primary:hover {
    background: #5a52d5;
}

.svto-btn-secondary {
    background: #f0f0f0;
    color: #333;
}

.svto-btn-secondary:hover {
    background: #e0e0e0;
}

.svto-btn-outline {
    background: transparent;
    color: #6c63ff;
    border-color: #6c63ff;
}

.svto-btn-outline:hover {
    background: #6c63ff;
    color: #fff;
}

/* ============================
   SOCIAL SHARING
   ============================ */
.svto-share-panel {
    margin-top: 20px;
    padding: 16px;
    background: #f8f9ff;
    border-radius: 12px;
    animation: svtoFadeIn 0.3s ease;
}

.svto-share-panel h4 {
    margin: 0 0 12px;
    font-size: 14px;
    color: #333;
}

.svto-share-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.svto-share-btn {
    padding: 15px;
    border-radius: 50%;
    border: 2px solid #e0e0e0;
    background: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    font-size: 18px;
    color: black;
}

.svto-share-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    background: #d1d1d1;
    color: black;
}

.svto-share-facebook:hover { border-color: #1877f2; color: #1877f2; }
.svto-share-twitter:hover  { border-color: #1da1f2; color: #1da1f2; }
.svto-share-whatsapp:hover { border-color: #25d366; color: #25d366; }
.svto-share-copy:hover     { border-color: #6c63ff; }
.svto-share-native:hover   { border-color: #6c63ff; }

.svto-share-status {
    margin-top: 10px;
    font-size: 13px;
    color: #00c9a7;
    text-align: center;
}

/* ============================
   SIZE RECOMMENDATION
   ============================ */
.svto-size-section {
    margin-top: 20px;
    border: 1px solid #e8e8ef;
    border-radius: 12px;
    overflow: hidden;
}

.svto-size-toggle {
    padding: 14px 20px;
    font-size: 15px;
    font-weight: 600;
    color: #333;
    cursor: pointer;
    background: #f8f9ff;
    list-style: none;
}

.svto-size-toggle::-webkit-details-marker {
    display: none;
}

.svto-size-toggle::before {
    content: '▸ ';
    transition: transform 0.2s;
}

details[open] .svto-size-toggle::before {
    content: '▾ ';
}

.svto-size-form {
    padding: 16px 20px 20px;
}

.svto-size-row {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 12px;
}

.svto-size-row label {
    flex: 1;
    min-width: 120px;
    font-size: 13px;
    color: #555;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.svto-size-input {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    width: 100%;
}

.svto-size-recommend-btn {
    width: 100%;
}

.svto-size-result {
    margin-top: 16px;
    padding: 16px;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 10px;
    text-align: left;
}

.svto-size-result h4 {
    margin: 0 0 8px;
    color: #166534;
}

.svto-size-result .size-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin: 12px 0;
}

.svto-size-result .size-box {
    text-align: center;
    padding: 10px 8px;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
}

.svto-size-result .size-box.recommended {
    border-color: #6c63ff;
    background: #f8f7ff;
}

.svto-size-result .size-box .size-label {
    font-size: 11px;
    color: #888;
    text-transform: uppercase;
}

.svto-size-result .size-box .size-value {
    font-size: 20px;
    font-weight: 700;
    color: #333;
}

.svto-size-result .size-tips {
    margin-top: 12px;
    font-size: 13px;
    color: #555;
}

.svto-size-result .size-confidence {
    display: inline-block;
    margin-top: 8px;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.confidence-high   { background: #dcfce7; color: #166534; }
.confidence-medium { background: #fef9c3; color: #854d0e; }
.confidence-low    { background: #fecaca; color: #991b1b; }

/* Error */
.svto-error-container {
    text-align: center;
    padding: 40px 20px;
}

.svto-error-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.svto-error-container h3 {
    margin: 0 0 8px;
    color: #e74c3c;
}

.svto-error-container p {
    color: #666;
    margin: 0 0 20px;
}

/* ============================
   RESPONSIVE — Mobile First
   ============================ */
@media (max-width: 768px) {
    .svto-modal-container {
        width: 95%;
        padding: 20px;
        max-height: 95vh;
        border-radius: 12px;
    }

    .svto-modal-header h2 {
        font-size: 20px;
    }

    .svto-preview-grid {
        flex-direction: column;
    }

    .svto-preview-plus {
        transform: rotate(90deg);
    }

    .svto-image-frame {
        height: 250px;
    }

    .svto-sidebyside {
        gap: 10px;
    }

    .svto-card-img-wrap {
        min-height: 220px;
        max-height: 350px;
    }

    .svto-card-img-wrap img {
        max-height: 350px;
    }

    .svto-result-actions {
        flex-direction: column;
    }

    .svto-btn {
        width: 100%;
    }

    .svto-size-row {
        flex-direction: column;
    }

    .svto-size-result .size-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .svto-share-btn {
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .svto-modal-container {
        width: 100%;
        max-height: 100vh;
        border-radius: 0;
        padding: 16px;
    }

    .svto-upload-area {
        padding: 24px 12px;
    }

    .svto-generate-btn {
        font-size: 16px;
        padding: 14px;
    }

    .svto-sidebyside {
        grid-template-columns: 1fr;
    }

    .svto-card-img-wrap {
        min-height: 200px;
        max-height: 300px;
    }

    .svto-card-img-wrap img {
        max-height: 300px;
    }
}

/* Safe area for notched phones */
@supports (padding: env(safe-area-inset-top)) {
    .svto-modal-container {
        padding-top: calc(20px + env(safe-area-inset-top));
        padding-bottom: calc(20px + env(safe-area-inset-bottom));
    }
}