* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: #f6f7f9;
    color: #222;
}

.topbar {
    background: #111827;
    color: white;
    padding: 14px 0;
}

.logo {
    font-weight: 600;
    font-size: 18px;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 24px;
}

h1, h2 {
    margin-top: 0;
}

button {
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 6px;
    padding: 12px 20px;
    font-size: 15px;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}

.footer {
    text-align: center;
    padding: 24px;
    font-size: 13px;
    color: #666;
}
.card {
    background: white;
    border-radius: 10px;
    padding: 28px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.06);
}

.subtitle {
    color: #555;
    margin-bottom: 20px;
}
#dropzone {
    border: 2px dashed #c7c9d1;
    border-radius: 10px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    background: #fafafa;
    transition: 0.15s;
}

#dropzone.dragover {
    border-color: #2563eb;
    background: #eef2ff;
}

#fileList {
    margin-top: 16px;
    padding-left: 20px;
}
.image-item {
    transition: box-shadow 0.15s;
}

.image-item:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.image-item .rotate,
.image-item .remove {
    background: rgba(255,255,255,0.95);
}
.loading {
    margin-top: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: #444;
    font-size: 14px;
}

.loading.hidden {
    display: none;
}

.spinner {
    width: 22px;
    height: 22px;
    border: 3px solid #ddd;
    border-top-color: #3b82f6;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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