/* Minimal design CSS */
:root {
    --bg: #f9fafb;
    --text: #111827;
    --muted: #6b7280;
    --border: #d1d5db;
    --card: #ffffff;
    --input: #ffffff;
    --brand: #4f46e5;
    --success: #059669;
    --error: #dc2626;
}

[data-theme="dark"] {
    --bg: #0f172a;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --border: #374151;
    --card: #1f2937;
    --input: #1f2937;
    --brand: #6366f1;
    --success: #10b981;
    --error: #ef4444;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', system-ui, -apple-system, sans-serif; line-height: 1.5; color: var(--text); background: var(--bg); }

/* Layout */
.container { max-width: 900px; margin: 0 auto; padding: 12px; }

/* Topbar */
.topbar { background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.topbar-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 16px 20px; }
.brand { grid-column: 2; justify-self: center; }
.brand-content { display: flex; align-items: center; gap: 12px; }
.brand-icon { font-size: 1.5rem; }
.brand-text { text-align: center; }
.brand-title { font-size: 1.5rem; margin: 0; color: var(--text); font-weight: 600; }
.brand-subtitle { font-size: 0.9rem; margin: 2px 0 0 0; color: var(--muted); }
.topbar-actions { display: flex; align-items: center; gap: 12px; grid-column: 3; justify-self: end; }

/* Controls */
.help-button, .theme-switcher, .lang-switcher { display: flex; flex-direction: column; align-items: center; gap: 2px; min-width: 50px; }
.control-label { font-size: 0.75rem; color: var(--muted); font-weight: 500; text-align: center; }
.lang-buttons { display: flex; gap: 2px; }
.theme-btn, .help-btn { border: 1px solid var(--border); background: var(--card); color: var(--text); padding: 8px; border-radius: 6px; cursor: pointer; font-size: 14px; min-width: 36px; min-height: 36px; display: flex; align-items: center; justify-content: center; }
.lang-btn { border: 1px solid var(--border); background: var(--card); color: var(--text); padding: 6px 8px; border-radius: 6px; cursor: pointer; font-size: 12px; font-weight: 500; min-width: 28px; min-height: 28px; display: flex; align-items: center; justify-content: center; }
.lang-btn[aria-pressed="true"] { background: var(--brand); color: white; border-color: var(--brand); }

/* Header - removed since it's now in topbar */

/* Form */
.email-form { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 16px; margin-bottom: 12px; }
.form-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 768px) { .form-grid { grid-template-columns: 1fr 1fr; } }

.form-section { border: 1px solid var(--border); border-radius: 8px; padding: 12px; }
.form-section h3 { color: var(--text); font-size: 1rem; margin-bottom: 8px; padding-bottom: 6px; border-bottom: 1px solid var(--border); }

.form-group { margin-bottom: 12px; }
.form-group label { display: block; margin-bottom: 4px; font-weight: 500; color: var(--text); font-size: 0.9rem; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 0.9rem; background: var(--input); color: var(--text); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 2px rgba(79,70,229,0.1); }
.form-group small { display: block; margin-top: 3px; color: var(--muted); font-size: 0.8rem; }
.form-group textarea { resize: vertical; min-height: 80px; }

/* URL group */
.url-group { display: flex; gap: 8px; align-items: flex-end; }
.url-group input { flex: 1; }
.url-group button { flex-shrink: 0; }

/* Variables hint */
.variables-hint { background: var(--input); border: 1px solid var(--border); border-radius: 6px; padding: 10px; margin-top: 8px; }
.variables-hint h4 { margin-bottom: 4px; font-size: 0.9rem; color: var(--text); }
.variables-hint ul { margin-left: 16px; }

/* Provider notes */
.provider-notes { margin-top: 8px; text-align: center; }
.provider-notes small { color: var(--muted); font-size: 0.8rem; }

/* SMTP grid */
.smtp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
@media (max-width: 768px) { .smtp-grid { grid-template-columns: 1fr; } }

/* Guide section */
.guide-section { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 12px; margin: 12px 0; }
.guide-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 768px) { .guide-grid { grid-template-columns: 1fr 1fr 1fr; } }
.guide-steps ol { margin-left: 18px; }
.guide-notes { background: var(--input); border: 1px solid var(--border); border-radius: 6px; padding: 8px; }

/* Table */
.table-container { overflow-x: auto; border: 1px solid var(--border); border-radius: 6px; }
.example-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
.example-table th, .example-table td { padding: 6px 8px; text-align: left; border-right: 1px solid var(--border); }
.example-table th { background: var(--input); color: var(--text); font-weight: 500; border-bottom: 1px solid var(--border); }
.example-table td { color: var(--text); }

/* Buttons */
.btn { padding: 8px 16px; font-size: 0.9rem; font-weight: 500; border: 1px solid var(--border); border-radius: 6px; cursor: pointer; background: var(--card); color: var(--text); }
.btn-primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.btn-secondary { background: var(--text); color: var(--card); border-color: var(--text); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn:hover:not(:disabled) { filter: brightness(0.95); }

/* Form actions */
.form-actions { text-align: center; margin-top: 16px; display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }

/* Results */
.result { background: var(--card); border-radius: 6px; padding: 12px; margin: 12px 0; border: 1px solid var(--border); }
.result.success { border-left: 3px solid var(--success); }
.result.error { border-left: 3px solid var(--error); }
.result h3 { margin-bottom: 6px; color: var(--text); font-size: 1rem; }
.result p { margin-bottom: 8px; color: var(--muted); }
.result pre { background: var(--input); padding: 8px; border-radius: 4px; border: 1px solid var(--border); overflow-x: auto; font-size: 0.8rem; color: var(--text); }

/* Footer */
footer { text-align: center; color: var(--muted); font-size: 0.85rem; margin-top: 16px; }

/* Report section */
.report-section { text-align: center; margin: 12px 0; }
.report-section .muted { color: var(--muted); font-size: 0.85rem; }

/* Responsive */
@media (max-width: 768px) {
    .container { padding: 8px; }
    .email-form { padding: 12px; }
    .form-section { padding: 8px; }
    header h1 { font-size: 1.5rem; }
    .form-grid { grid-template-columns: 1fr; }
    .guide-grid { grid-template-columns: 1fr; }
    .smtp-grid { grid-template-columns: 1fr; }
    .url-group { flex-direction: column; align-items: stretch; }
    .url-group button { margin-top: 6px; }
    .topbar-inner { padding: 8px 12px; }
    .topbar-actions { gap: 8px; }
}

/* Accessibility */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }

/* Animations (minimal) */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.result { animation: fadeIn 0.3s ease-out; }

/* Help page images */
.content figure { margin: 12px 0; }
.help-figure { background: var(--card); border: 1px dashed var(--border); border-radius: 8px; padding: 8px; display: flex; flex-direction: column; gap: 6px; }
/* Ensure images (including SVGs) are never cropped */
.help-img, .content img { width: 100%; height: auto; border-radius: 6px; border: 1px solid var(--border); display: block; object-fit: contain; }
.help-caption { color: var(--muted); font-size: 0.85rem; text-align: center; }
.img-placeholder { width: 100%; aspect-ratio: 16/9; display: grid; place-items: center; color: var(--muted); background: var(--input); border: 1px dashed var(--border); border-radius: 6px; font-size: 0.9rem; }
.content .two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
@media (max-width: 768px) { .content .two-col { grid-template-columns: 1fr; } }