.scp-smtp-test-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.88);
    backdrop-filter: blur(2px);
    z-index: 100000;
    align-items: center;
    justify-content: center;
}
.scp-smtp-test-overlay[style*="flex"] { display: flex !important; }
.scp-smtp-test-overlay-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    padding: 28px 36px;
    background: #fff;
    border: 1px solid #e0e0e0;
    box-shadow: 0 8px 32px rgba(0,0,0,0.1);
    border-radius: 14px;
}
.scp-smtp-test-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid #e0e0e0;
    border-top-color: var(--scp-primary);
    border-radius: 50%;
    animation: scp-smtp-spin 0.8s linear infinite;
}
.scp-smtp-test-overlay-text {
    font-size: 14px;
    font-weight: 500;
    color: #1d2327;
}
@keyframes scp-smtp-spin {
    to { transform: rotate(360deg); }
}
#scp-smtp-save-btn:disabled {
    opacity: 0.5 !important;
    cursor: default !important;
    pointer-events: none;
}

/* ═══════════════════════════════════════════════════════════
   SMTP Provider Quick-Reference Cards
   ═══════════════════════════════════════════════════════════ */

/* ── Outer wrapper ── */
.scp-smtp-providers {
    margin-top: 36px;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
    overflow: hidden;
}

/* ── Section header (matches .scp-section-header) ── */
.scp-smtp-providers-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 18px 24px;
    background: #f8f9fa;
    border-bottom: 1px solid #e0e0e0;
}
.scp-smtp-providers-header svg {
    color: var(--scp-primary);
    flex-shrink: 0;
}
.scp-smtp-providers-header h2 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #1d2327;
    letter-spacing: -0.02em;
}

/* ── Body ── */
.scp-smtp-providers-body {
    padding: 24px;
}
.scp-smtp-providers-intro {
    margin: 0 0 20px;
    font-size: 13.5px;
    color: #50575e;
    line-height: 1.6;
}

/* ── Grid ── */
.scp-smtp-providers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* ── Individual card ── */
.scp-smtp-provider-card {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    transition: border-color 0.2s, box-shadow 0.2s;
    overflow: hidden;
}
.scp-smtp-provider-card:hover {
    border-color: #b8d4e9;
    box-shadow: 0 4px 16px rgba(var(--scp-primary-rgb),0.10);
}

/* ── Card top row: icon + title + button ── */
.scp-smtp-provider-top {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 18px 14px;
    border-bottom: 1px solid #f0f0f0;
}
.scp-smtp-provider-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    flex-shrink: 0;
}
.scp-smtp-provider-icon--gmail   { background: #fce8e6; }
.scp-smtp-provider-icon--outlook { background: #e1f0ff; }
.scp-smtp-provider-icon--yahoo   { background: #f3e8ff; }

.scp-smtp-provider-title {
    flex: 1;
    min-width: 0;
}
.scp-smtp-provider-title h3 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: #1d2327;
    line-height: 1.2;
}
.scp-smtp-provider-subtitle {
    display: block;
    font-size: 12px;
    color: #9ca0a5;
    margin-top: 2px;
}

/* ── Use button (inside top row) ── */
.scp-smtp-provider-fill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 7px 14px;
    background: var(--scp-primary-light);
    color: var(--scp-primary);
    border: 1px solid var(--scp-primary-border);
    border-radius: 8px;
    font-size: 12.5px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
    transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.1s;
}
.scp-smtp-provider-fill:hover {
    background: var(--scp-primary);
    color: #fff;
    border-color: var(--scp-primary);
}
.scp-smtp-provider-fill:active {
    transform: scale(0.96);
}

/* ── Settings rows ── */
.scp-smtp-provider-settings {
    padding: 14px 18px 12px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.scp-smtp-setting {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-size: 13px;
    color: #50575e;
    line-height: 1.5;
}
.scp-smtp-setting-label {
    font-weight: 600;
    color: #1d2327;
    white-space: nowrap;
    min-width: 72px;
    font-size: 12.5px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.scp-smtp-setting code {
    display: inline-block;
    background: #eef4fb;
    color: #1a56db;
    padding: 2px 8px;
    border-radius: 5px;
    font-size: 12.5px;
    font-weight: 500;
    font-family: SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

/* ── Note / warning ── */
.scp-smtp-provider-note {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin: 0 18px 16px;
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 12px;
    line-height: 1.55;
    color: #92400e;
}
.scp-smtp-provider-note svg {
    flex-shrink: 0;
    margin-top: 1px;
    color: #d97706;
}
.scp-smtp-provider-note a {
    color: #b45309;
    font-weight: 600;
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 2px;
}
.scp-smtp-provider-note a:hover {
    color: #92400e;
}

/* ── Responsive ── */
@media (max-width: 1200px) {
    .scp-smtp-providers-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 780px) {
    .scp-smtp-providers-grid {
        grid-template-columns: 1fr;
    }
    .scp-smtp-providers-body {
        padding: 18px;
    }
}