:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --dark: #1f2937;
    --light: #f9fafb;
    --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --gradient-premium: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.15);
}

* { box-sizing: border-box; }
body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: #f4f6f9; color: var(--dark); margin: 0; padding: 0; min-height: 100vh; }

.hero-section { background: var(--gradient); color: white; padding: 40px 0 60px; position: relative; overflow: hidden; }
.btn-back { color: white !important; border-color: rgba(255,255,255,0.3) !important; backdrop-filter: blur(10px); background: rgba(255,255,255,0.1); transition: all 0.3s; }
.btn-back:hover { background: rgba(255,255,255,0.2); transform: translateX(-3px); }
.hero-content { position: relative; z-index: 2; }
.hero-icon { font-size: 4rem; margin-bottom: 15px; animation: float 3s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.hero-title { font-size: 2.5rem; font-weight: 800; margin-bottom: 10px; }
.hero-subtitle { font-size: 1.1rem; opacity: 0.95; margin-bottom: 20px; }
.hero-badges { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.badge-feature { background: rgba(255,255,255,0.15); backdrop-filter: blur(10px); padding: 8px 16px; border-radius: 20px; font-weight: 500; font-size: 0.9rem; border: 1px solid rgba(255,255,255,0.2); }

.instructions-card { background: white; border-radius: 15px; box-shadow: var(--shadow-md); overflow: hidden; }
.instructions-toggle { padding: 15px 20px; cursor: pointer; background: white; transition: background 0.3s; }
.instructions-toggle:hover { background: #f9fafb; }
.instructions-toggle h4 { margin: 0; color: var(--primary); display: flex; align-items: center; gap: 10px; font-size: 1.1rem; }
.instructions-toggle .bi-chevron-down { transition: transform 0.3s; margin-left: auto; }
.instructions-toggle .bi-chevron-down.rotated { transform: rotate(180deg); }
.instructions-content { padding: 0 20px; max-height: 0; overflow: hidden; transition: all 0.4s ease; }
.instructions-content.show { max-height: 2000px; padding: 15px 20px 20px; }
.instruction-step { display: flex; gap: 15px; padding: 15px; background: #f9fafb; border-radius: 10px; margin-bottom: 10px; }
.step-number { width: 35px; height: 35px; background: var(--gradient); color: white; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: bold; flex-shrink: 0; }
.step-content h5 { margin: 0 0 5px; font-size: 1rem; }
.step-content p { margin: 0; color: #6b7280; font-size: 0.9rem; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; padding: 15px; background: #f9fafb; border-radius: 10px; }
.feature-item { display: flex; align-items: center; gap: 8px; padding: 10px; background: white; border-radius: 8px; box-shadow: var(--shadow-sm); font-size: 0.9rem; }
.feature-item i { font-size: 1.2rem; color: var(--primary); }

.url-input-wrapper { max-width: 700px; margin: 0 auto; }
.url-input-card { background: white; border-radius: 15px; box-shadow: var(--shadow-md); overflow: hidden; }
.url-input-header { padding: 20px; background: var(--gradient); color: white; }
.url-input-header h3 { margin: 0 0 5px; font-size: 1.2rem; display: flex; align-items: center; gap: 8px; }
.url-input-body { padding: 20px; }
.input-group-lg .form-control { border-radius: 10px 0 0 10px; border: 2px solid #e5e7eb; padding: 10px 14px; font-size: 1rem; }
.input-group-lg .form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(102,126,234,0.15); }
.input-group-lg .input-group-text { border-radius: 10px 0 0 10px; background: #f3f4f6; border: 2px solid #e5e7eb; border-right: none; }
.btn-analyze { background: var(--gradient); color: white; border: none; padding: 10px 20px; border-radius: 0 10px 10px 0; font-size: 1rem; font-weight: 600; transition: all 0.3s; white-space: nowrap; }
.btn-analyze:hover:not(:disabled) { transform: translateX(3px); box-shadow: 0 5px 15px rgba(102,126,234,0.4); color: white; }
.btn-analyze:disabled { opacity: 0.7; cursor: not-allowed; }
.url-examples { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; font-size: 0.9rem; }
.url-example { color: var(--primary); text-decoration: none; font-weight: 500; }
.url-example:hover { text-decoration: underline; }

.progress-section { max-width: 600px; margin: 0 auto; }
.progress-card { background: white; border-radius: 15px; padding: 30px; box-shadow: var(--shadow-md); }
.animate-spin { animation: spin 2s linear infinite; color: var(--primary); }
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
.progress { background: #e5e7eb; border-radius: 10px; overflow: hidden; height: 24px !important; }
.progress-bar { background: var(--gradient); font-weight: 600; display: flex; align-items: center; justify-content: center; font-size: 0.9rem; }

.stats-card { background: white; border-radius: 15px; padding: 25px; box-shadow: var(--shadow-md); }
.stat-item { padding: 15px; transition: all 0.3s; }
.stat-item:hover { transform: translateY(-3px); }
.stat-item.highlight { background: linear-gradient(135deg, rgba(16,185,129,0.1) 0%, rgba(5,150,105,0.1) 100%); border-radius: 10px; }
.stat-icon { font-size: 2rem; margin-bottom: 5px; }
.stat-value { font-size: 1.5rem; font-weight: 700; color: var(--dark); margin-bottom: 2px; }
.stat-label { color: #6b7280; font-size: 0.85rem; }

.filter-panel { background: white; border-radius: 15px; padding: 20px; box-shadow: var(--shadow-sm); }
.form-range::-webkit-slider-thumb { background: var(--primary); width: 20px; height: 20px; border-radius: 50%; cursor: pointer; }
.filter-stats .badge { font-size: 1.2rem; padding: 6px 15px; }
.cms-warning { background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%); border: 2px solid #f59e0b; border-radius: 10px; padding: 15px; font-size: 0.9rem; }

.images-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; }
.image-card { background: white; border-radius: 10px; overflow: hidden; box-shadow: var(--shadow-sm); transition: all 0.3s; animation: fadeIn 0.4s ease; border: 1px solid #e5e7eb; }
.image-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.image-card.hidden-by-filter { display: none; }

.image-preview { width: 100%; height: 140px; position: relative; cursor: pointer; background: #f3f4f6; overflow: hidden; }
.image-preview img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s; }
.image-preview:hover img { transform: scale(1.05); }
.image-preview-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity 0.3s; color: white; font-size: 0.85rem; font-weight: 500; }
.image-preview:hover .image-preview-overlay { opacity: 1; }

.image-info { padding: 10px; }
.image-filename { font-weight: 600; margin-bottom: 4px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; color: var(--dark); font-size: 0.85rem; }
.image-url-link { display: inline-flex; align-items: center; gap: 4px; font-size: 0.75rem; color: var(--primary); text-decoration: none; margin-bottom: 6px; font-weight: 500; transition: color 0.2s; }
.image-url-link:hover { color: var(--primary-dark); text-decoration: underline; }
.image-path { font-size: 0.7rem; color: #9ca3af; margin-bottom: 8px; word-break: break-all; font-family: 'Consolas', 'Monaco', monospace; background: #f9fafb; padding: 2px 6px; border-radius: 4px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.3; }
.image-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; font-size: 0.75rem; }
.image-meta .meta-badge { display: inline-flex; align-items: center; gap: 3px; padding: 3px 8px; border-radius: 12px; background: #f3f4f6; color: #6b7280; }
.image-meta .meta-badge.original { background: #fee2e2; color: #dc2626; }

.optimization-variants { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; margin-bottom: 8px; }
.variant-card { padding: 8px 6px; border-radius: 6px; border: 1px solid #e5e7eb; text-align: center; background: #fafafa; cursor: default; }
.variant-card.best { border-color: var(--success); background: rgba(16,185,129,0.08); }
.variant-card.unavailable { border-color: #e5e7eb; background: #f3f4f6; opacity: 0.7; }
.variant-label { font-size: 0.7rem; color: #6b7280; margin-bottom: 3px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.variant-size { font-size: 0.85rem; font-weight: 700; color: var(--dark); }
.variant-savings { font-size: 0.75rem; font-weight: 600; color: var(--success); margin-top: 3px; }
.variant-savings.negative { color: var(--danger); }

.image-actions { display: flex; gap: 4px; }
.image-actions .btn { flex: 1; padding: 7px 4px; border-radius: 6px; font-weight: 600; font-size: 0.75rem; transition: all 0.2s; display: flex; align-items: center; justify-content: center; gap: 3px; text-decoration: none; }
.btn-download-same { background: #f3f4f6; color: var(--dark); border: none; }
.btn-download-same:hover { background: var(--primary); color: white; }
.btn-download-webp { background: var(--gradient-success); color: white; border: none; }
.btn-download-webp:hover { transform: translateY(-1px); box-shadow: 0 3px 10px rgba(16,185,129,0.4); color: white; }
.btn-compare { background: transparent; color: var(--primary); border: 1px solid var(--primary) !important; flex: 0 0 34px; padding: 7px !important; }
.btn-compare:hover { background: var(--primary); color: white; }

.action-buttons { padding: 20px; background: white; border-radius: 15px; box-shadow: var(--shadow-sm); }
.action-buttons .btn { border-radius: 50px; padding: 12px 25px; font-weight: 600; font-size: 0.95rem; }
.btn-premium-download { background: var(--gradient-premium); color: white; border: none; box-shadow: 0 5px 20px rgba(245,158,11,0.3); }
.btn-premium-download:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(245,158,11,0.5); color: white; }
.premium-teaser-card { background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%); border: 2px dashed #f59e0b; border-radius: 10px; padding: 15px; font-size: 0.9rem; }
.premium-diamond { font-size: 1.5rem; animation: float 2s ease-in-out infinite; }

/* === Compare Modal (Рабочая логика из image-optimizer) === */
.compare-container {
    position: relative;
    max-width: 100%;
    overflow: hidden;
    border-radius: 15px;
    background: #000;
}

.compare-slider {
    position: relative;
    width: 100%;
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
}

.compare-image {
    display: block;
    width: 100%;
    height: auto;
    pointer-events: none;
    -webkit-user-drag: none;
}

.compare-after-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    overflow: hidden;
}

.compare-after-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.compare-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    background: white;
    z-index: 9;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
    pointer-events: none;
}

.compare-handle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: ew-resize;
    box-shadow: 0 4px 15px rgba(0,0,0,0.4);
    z-index: 10;
    color: var(--primary);
    font-size: 1.4rem;
    transition: transform 0.1s;
}

.compare-handle:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

.compare-handle:active {
    transform: translate(-50%, -50%) scale(0.95);
}

.compare-handle::before {
    display: none;
}

/* === Cookie Banner (Скопировано из image-optimizer) === */
.cookie-banner {
    position: fixed;
    bottom: 20px;
    left: 20px;
    right: 20px;
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 20px;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    display: none;
}

.cookie-content {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.cookie-icon {
    font-size: 2rem;
}

.cookie-text {
    flex: 1;
    min-width: 200px;
}

.cookie-btn {
    background: var(--gradient);
    color: white;
    border: none;
    padding: 10px 25px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
}

.site-footer { background: var(--dark); color: white; padding: 20px 0; margin-top: 40px; font-size: 0.9rem; }

@media (max-width: 768px) {
    .hero-title { font-size: 1.8rem; }
    .hero-subtitle { font-size: 0.95rem; }
    .hero-icon { font-size: 3rem; }
    .stat-value { font-size: 1.3rem; }
    .images-list { grid-template-columns: 1fr; }
    .action-buttons .btn { width: 100%; margin-bottom: 8px; }
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: #f1f1f1; }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }


/* Сообщение о недоступности оптимизации */
.unavailable-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    background: #f8f9fa;
    border-radius: 15px;
    text-align: center;
    padding: 30px;
    border: 2px dashed #dee2e6;
}