:root {
    --primary: #4F46E5;
    --primary-hover: #4338CA;
    --secondary: #6B7280;
    --secondary-hover: #4B5563;
    --success: #10B981;
    --success-hover: #059669;
    --bg-color: #F3F4F6;
    --card-bg: #FFFFFF;
    --text-main: #1F2937;
    --text-muted: #6B7280;
    --border: #E5E7EB;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 8px;
}

section {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

h2 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    border-bottom: 2px solid var(--border);
    padding-bottom: 8px;
}

/* Inputs & Buttons */
.input-group {
    display: flex;
    gap: 12px;
    margin-top: 12px;
}

input[type="url"] {
    flex: 1;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

input[type="url"]:focus {
    border-color: var(--primary);
}

.btn {
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.btn:active {
    transform: scale(0.98);
}

.btn.primary { background-color: var(--primary); color: white; }
.btn.primary:hover { background-color: var(--primary-hover); }
.btn.secondary { background-color: var(--secondary); color: white; }
.btn.secondary:hover { background-color: var(--secondary-hover); }
.btn.success { background-color: var(--success); color: white; width: 100%; margin-top: 12px;}
.btn.success:hover { background-color: var(--success-hover); }
.btn:disabled { opacity: 0.7; cursor: not-allowed; }

.status-message {
    margin-top: 8px;
    font-size: 0.9rem;
    font-weight: 500;
}
.status-ok { color: var(--success); }
.status-error { color: #EF4444; }

/* Upload Area */
.upload-box {
    border: 2px dashed var(--border);
    border-radius: 8px;
    padding: 40px 20px;
    text-align: center;
    background-color: #F9FAFB;
    transition: border-color 0.2s, background-color 0.2s;
    cursor: pointer;
}

.upload-box:hover, .upload-box.dragover {
    border-color: var(--primary);
    background-color: #EEF2FF;
}

.upload-box p {
    margin-top: 12px;
    color: var(--text-muted);
}

#imagePreviewContainer {
    margin-top: 20px;
    text-align: center;
}

#imagePreview {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* Spinner */
.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border-left-color: var(--primary);
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

#loading {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
}

/* Cards */
.contact-card {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
    background: #F9FAFB;
}

.contact-card h3 {
    color: var(--primary);
    margin-bottom: 12px;
}

.field {
    margin-bottom: 8px;
    display: flex;
}

.field span.label {
    font-weight: 600;
    width: 80px;
    flex-shrink: 0;
    color: var(--text-muted);
}

.field span.value {
    flex: 1;
}

.debug-box {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px dashed var(--border);
}

.debug-box h3 {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.debug-box pre {
    background: #111827;
    color: #E5E7EB;
    padding: 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    overflow-x: auto;
}