/* ===============================================================
   ToolDuck — Date and Time Calculator Suite Styles
   Scoped under .dc-app
   =============================================================== */

.dc-app {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Mode Navigation */
.dc-modes {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding: 0.75rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md, 8px);
}

.dc-mode-tab {
    padding: 7px 16px;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--ink-2);
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.15s ease;
}

.dc-mode-tab:hover {
    color: var(--ink);
    background: var(--bg-muted);
}

.dc-mode-tab.is-active {
    background: var(--primary, #1d4ed8);
    color: #ffffff;
    font-weight: 600;
}

/* Mode Panels */
.dc-panel {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.dc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

@media (max-width: 800px) {
    .dc-grid {
        grid-template-columns: 1fr;
    }
}

.dc-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md, 8px);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.dc-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--ink);
    margin: 0;
}

.dc-control {
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
}

.dc-control-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--ink);
}

.dc-input,
.dc-select,
.dc-textarea {
    padding: 0.65rem 0.85rem;
    font-size: 0.95rem;
    font-family: inherit;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg);
    color: var(--ink);
}

.dc-input:focus,
.dc-select:focus,
.dc-textarea:focus {
    outline: 2px solid var(--primary, #1d4ed8);
    outline-offset: 1px;
}

.dc-checkbox-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    color: var(--ink);
    cursor: pointer;
}

/* Result Card */
.dc-result-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md, 8px);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 1rem;
}

.dc-primary-result {
    font-size: 1.85rem;
    font-weight: 800;
    color: var(--primary, #1d4ed8);
    line-height: 1.2;
}

.dc-sub-result {
    font-size: 0.95rem;
    color: var(--ink-2);
    margin-top: 0.35rem;
}

.dc-metrics-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.dc-metric-item {
    background: var(--bg-muted);
    padding: 0.75rem;
    border-radius: 6px;
    border: 1px solid var(--border);
}

.dc-metric-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ink-2);
    display: block;
    margin-bottom: 0.25rem;
}

.dc-metric-val {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--ink);
}

/* Explanations */
.dc-info-box {
    background: var(--bg-muted);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.85rem 1rem;
    font-size: 0.85rem;
    color: var(--ink-2);
    line-height: 1.45;
}

/* Toast */
.dc-toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--ink);
    color: var(--surface);
    padding: 0.65rem 1.15rem;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
    z-index: 9999;
}

.dc-toast.is-visible {
    opacity: 1;
    transform: translateY(0);
}