static/style.css

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #06b6d4;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    overflow-x: hidden;
}

.background-blob {
    position: fixed;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(79, 70, 229, 0.15) 0%, rgba(0,0,0,0) 70%);
    top: -200px;
    left: -200px;
    z-index: -1;
    animation: pulse 10s infinite alternate;
}

.blob-2 {
    top: auto;
    left: auto;
    bottom: -200px;
    right: -200px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, rgba(0,0,0,0) 70%);
}

@keyframes pulse {
    from { transform: scale(1); opacity: 0.5; }
    to { transform: scale(1.2); opacity: 0.8; }
}

.container {
    width: 100%;
    max-width: 900px;
    padding: 2rem;
    position: relative;
    z-index: 1;
}

header {
    text-align: center;
    margin-bottom: 3rem;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.logo i {
    font-size: 2.5rem;
    color: var(--accent);
    filter: drop-shadow(0 0 10px rgba(6, 182, 212, 0.5));
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

.logo span {
    color: var(--primary);
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.card {
    background: var(--card-bg);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    margin-bottom: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass {
    backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.card:hover {
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.2);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.card-header i {
    color: var(--accent);
    font-size: 1.2rem;
}

.card-header h2 {
    font-size: 1.3rem;
    font-weight: 600;
}

.upload-zone {
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 2.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-zone:hover, .upload-zone.dragover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary);
}

.upload-icon {
    font-size: 2.5rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    transition: color 0.3s ease;
}

.upload-zone:hover .upload-icon {
    color: var(--primary);
}

.upload-zone span {
    display: block;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.status-badge {
    margin-top: 1rem;
    padding: 0.6rem 1rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    font-size: 0.95rem;
}

.status-badge.loaded {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

/* Redesigned Preview Area */
.preview-area {
    width: 100%;
    min-height: 300px;
    background: radial-gradient(circle, #1e293b 0%, #000 100%);
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    box-shadow: inset 0 0 40px rgba(0,0,0,0.9), 0 0 20px rgba(79, 70, 229, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

#canvas-wrapper {
    position: relative;
    max-width: 100%;
}

#roi-canvas {
    display: block;
    max-width: 100%;
    cursor: crosshair;
}

.hint-badge {
    margin-left: auto;
    font-size: 0.8rem;
    background: var(--warning);
    color: #000;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-weight: 600;
}

/* Settings Panel */
.settings-panel {
    background: rgba(0,0,0,0.2);
    padding: 1.2rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 600px) {
    .settings-panel { grid-template-columns: 1fr; }
}

.setting-item label {
    display: block;
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.setting-item.double-slider {
    grid-column: 1 / -1;
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem;
    border-radius: 12px;
}

.slider-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.slider-row {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.slider-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    min-width: 40px;
}

.roi-controls {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
}

.label-with-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
}

.btn-text {
    background: none;
    border: none;
    color: var(--accent);
    font-size: 0.85rem;
    cursor: pointer;
    padding: 0;
    transition: opacity 0.2s;
}

.btn-text:hover { opacity: 0.8; }

.roi-inputs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.roi-group {
    background: rgba(255, 255, 255, 0.03);
    padding: 0.8rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.group-label {
    display: block;
    font-size: 0.75rem;
    color: var(--accent);
    margin-bottom: 0.5rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05rem;
}

.coord-inputs {
    display: flex;
    gap: 0.8rem;
}

.coord-input {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.coord-input span {
    font-size: 0.65rem;
    color: var(--text-muted);
}

.coord-input input {
    width: 100%;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    padding: 0.5rem;
    border-radius: 8px;
    text-align: center;
    font-size: 0.95rem;
    transition: border-color 0.2s;
}

.coord-input input:focus {
    border-color: var(--primary);
    outline: none;
}

/* Enhancing inputs */
input[type="range"] {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 5px;
    appearance: none;
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary);
    border: 2px solid var(--accent);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 0 15px rgba(6, 182, 212, 0.4);
}

/* Actions */
.action-bar {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn-primary {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.8rem 2rem;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    transition: all 0.2s ease;
    text-decoration: none;
    font-size: 1rem;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.main-action {
    width: 100%;
    justify-content: center;
    font-size: 1.1rem;
    padding: 1rem;
}

/* Spinner & Progress */
.spinner-container {
    text-align: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top: 4px solid var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.8rem;
    font-size: 0.95rem;
}

.progress-bar-bg {
    background: rgba(255, 255, 255, 0.1);
    height: 10px;
    border-radius: 5px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    width: 0%;
    transition: width 0.3s ease;
}

/* Results */
.result-viewer {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.result-viewer img, .result-viewer video {
    width: 100%;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.badge {
    margin-left: auto;
    background: var(--success);
    color: white;
    padding: 0.25rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.hidden { display: none !important; }

/* Toast */
@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}