/* WorldTime Toolkit styles */
.wtt-wrapper {
    --wtt-blue-900: #1E40AF;
    --wtt-blue-700: #2563EB;
    --wtt-blue-500: #3B82F6;
    --wtt-blue-400: #60A5FA;
    --wtt-blue-300: #93C5FD;

    font-family: "Inter","Roboto","Helvetica",sans-serif;
    background: #fff;
    color: #0f172a;
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 10px 25px rgba(2,6,23,0.06);
}

.wtt-header { margin-bottom: 12px; }
.wtt-title {
    font-size: 1.5rem;
    color: var(--wtt-blue-900);
    margin: 0 0 4px 0;
}
.wtt-subtitle { margin: 0; color: #475569; }

.wtt-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill,minmax(220px,1fr));
    gap: 16px;
    margin-top: 12px;
}

.wtt-card {
    border: 1px solid #e5e7eb;
    border-radius: 16px;
    padding: 16px;
    background: linear-gradient(180deg,#ffffff, #f8fafc);
    box-shadow: 0 6px 16px rgba(2,6,23,0.05);
}

.wtt-city {
    font-weight: 600;
    color: var(--wtt-blue-700);
    margin-top: 8px;
}
.wtt-diff { color: #64748b; font-size: 0.9rem; }
.wtt-digital { font-variant-numeric: tabular-nums; font-size: 1.1rem; color: #0f172a; }

.wtt-form {
    margin-top: 12px;
    display: grid;
    gap: 12px;
}
.wtt-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    align-items: center;
}
.wtt-row label { font-weight: 600; color: #0f172a; }
.wtt-radio { display: flex; align-items: center; gap: 6px; }

.wtt-form select,
.wtt-form input[type="datetime-local"] {
    padding: 10px 12px;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    outline: none;
    min-width: 240px;
    background: #fff;
}
.wtt-form select:focus,
.wtt-form input[type="datetime-local"]:focus {
    border-color: var(--wtt-blue-500);
    box-shadow: 0 0 0 4px rgba(59,130,246,0.15);
}

.wtt-actions { margin-top: 4px; }
.wtt-btn {
    padding: 10px 16px;
    background: var(--wtt-blue-600,#2563EB);
    color: white;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    box-shadow: 0 8px 18px rgba(37,99,235,0.25);
    transition: transform .05s ease, background .2s ease;
}
.wtt-btn:hover { background: var(--wtt-blue-900); }
.wtt-btn:active { transform: translateY(1px); }

.wtt-clock {
    display: block;
    width: 180px;
    height: 180px;
    margin: 0 auto;
}
.wtt-result { margin-top: 12px; }

.wtt-note { font-size: .85rem; color: #64748b; margin-top: 6px; }