/* ══════════════════════════════════════════════════════════
   Date Calculator + Time Calculator — Shared CSS
   Prefix: dtc- (date-time calculator)
   ══════════════════════════════════════════════════════════ */

/* ── Mode Tabs ── */
.dtc-mode-tabs {
    display: flex;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    border-bottom: none;
    overflow-x: auto;
    scrollbar-width: none;
    margin-bottom: 0;
}

.dtc-mode-tabs::-webkit-scrollbar { display: none; }

.dtc-mode-tab {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.dtc-mode-tab:hover { color: var(--color-text); background: rgba(99,102,241,.05); }

.dtc-mode-tab.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

.dtc-tab-panel {
    display: none;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    padding: var(--space-5);
    margin-bottom: var(--space-4);
}

.dtc-tab-panel.active { display: block; }

/* ── Section Title inside panel ── */
.dtc-section-title {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-bottom: var(--space-3);
}

/* ── Input Groups ── */
.dtc-input-group {
    margin-bottom: var(--space-4);
}

.dtc-label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: .08em;
    margin-bottom: var(--space-2);
}

.dtc-label span {
    font-weight: 400;
    text-transform: none;
    letter-spacing: 0;
    opacity: .7;
}

/* ── Date Dropdowns ── */
.dtc-date-row {
    display: flex;
    gap: var(--space-2);
}

.dtc-select {
    flex: 1;
    padding: var(--space-2) var(--space-3);
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236B7280' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    padding-right: var(--space-6);
    box-shadow: 0 1px 3px rgba(0,0,0,0.07);
}

.dtc-select:hover { border-color: var(--color-accent); }
.dtc-select:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }
.dtc-select.error { border-color: #EF4444; }
.dtc-select--month { flex: 2; }
.dtc-select--year  { flex: 1.5; }

/* ── Error Message ── */
.dtc-error {
    font-size: var(--text-xs);
    color: #EF4444;
    margin-top: var(--space-1);
    display: none;
}
.dtc-error.visible { display: block; }

/* ── Quick Fill Pills ── */
.dtc-quick-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-1);
    margin-top: var(--space-2);
}

.dtc-quick-btn {
    padding: 3px 10px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.dtc-quick-btn:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(99,102,241,.06);
}

/* ── Checkbox Row ── */
.dtc-checkbox-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}

.dtc-checkbox-row input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-accent);
    cursor: pointer;
}

.dtc-checkbox-label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    cursor: pointer;
    user-select: none;
}

/* ── Number / Text Input ── */
.dtc-number-input {
    padding: var(--space-2) var(--space-3);
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--text-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    width: 100%;
    box-shadow: 0 1px 3px rgba(0,0,0,0.07);
}

.dtc-number-input:hover { border-color: var(--color-accent); }
.dtc-number-input:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }

.dtc-number-input--sm {
    width: 80px;
    text-align: center;
}

/* ── Op Row (Add/Subtract rows) ── */
.dtc-op-rows { display: flex; flex-direction: column; gap: var(--space-2); margin-bottom: var(--space-3); }

.dtc-op-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.dtc-op-row .dtc-select--op   { flex: 0 0 110px; }
.dtc-op-row .dtc-number-input { flex: 0 0 80px; }
.dtc-op-row .dtc-select--unit { flex: 1; min-width: 110px; }

.dtc-op-remove-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
    font-size: var(--text-sm);
}
.dtc-op-remove-btn:hover { border-color: #EF4444; color: #EF4444; }

.dtc-op-add-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 5px 12px;
    background: transparent;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: var(--space-3);
}
.dtc-op-add-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* ── Preset Buttons Row ── */
.dtc-preset-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.dtc-preset-btn {
    padding: 5px 12px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    font-size: var(--text-xs);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.dtc-preset-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }

/* ── Main Calculate Button ── */
.dtc-calc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    width: fit-content;
    padding: 9px var(--space-6);
    background: linear-gradient(135deg, var(--color-accent), #7C3AED);
    color: #fff;
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--text-sm);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 14px rgba(99,102,241,.35);
    margin-top: var(--space-2);
}
.dtc-calc-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(99,102,241,.45); }
.dtc-calc-btn:active { transform: translateY(0); }

/* ── Results Section ── */
.dtc-results {
    display: none;
    margin-top: var(--space-4);
}
.dtc-results.visible {
    display: block;
    animation: dtc-fade-in .3s ease;
}

@keyframes dtc-fade-in {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Result Header ── */
.dtc-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.dtc-result-header strong { color: var(--color-text); }

/* ── Result Hero ── */
.dtc-result-hero {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-5) var(--space-6);
    margin-bottom: var(--space-3);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.dtc-result-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(99,102,241,.07) 0%, transparent 70%);
    pointer-events: none;
}

.dtc-result-hero-value {
    font-size: clamp(1.6rem, 4vw, 2.8rem);
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-accent), #7C3AED);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    letter-spacing: -.02em;
}

.dtc-result-hero-sub {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

/* ── Units Grid ── */
.dtc-units-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.dtc-unit-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-3);
    text-align: center;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.dtc-unit-card:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(0,0,0,.1); }

.dtc-unit-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: var(--space-1);
}

.dtc-unit-value {
    font-size: clamp(.95rem, 2vw, 1.3rem);
    font-weight: 800;
    color: var(--color-text);
    line-height: 1.15;
}

.dtc-unit-sub {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* ── Extra Badges Row ── */
.dtc-extras {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.dtc-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-1) var(--space-3);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    color: var(--color-text-secondary);
    font-weight: 500;
}

.dtc-badge strong { color: var(--color-text); }

/* ── Result Actions ── */
.dtc-result-actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.dtc-action-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.dtc-action-btn:hover { border-color: var(--color-accent); color: var(--color-text); }
.dtc-action-btn--primary { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.dtc-action-btn--primary:hover { background: #5B21B6; border-color: #5B21B6; color: #fff; }

/* ── Divider ── */
.dtc-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-4) 0;
}

/* ── Holiday List ── */
.dtc-holiday-list {
    margin-top: var(--space-3);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.dtc-holiday-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-4);
    border-bottom: 1px solid var(--color-border);
    font-size: var(--text-sm);
}
.dtc-holiday-item:last-child { border-bottom: none; }
.dtc-holiday-item-name { color: var(--color-text-secondary); }
.dtc-holiday-item-date {
    font-size: var(--text-xs);
    color: var(--color-accent);
    font-weight: 600;
    background: rgba(99,102,241,.1);
    padding: 2px 8px;
    border-radius: var(--radius-full);
}

/* ── Week Number Card ── */
.dtc-week-toggle {
    display: inline-flex;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    padding: 3px;
    margin-bottom: var(--space-4);
}

.dtc-week-toggle-btn {
    padding: var(--space-1) var(--space-4);
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.dtc-week-toggle-btn.active {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 2px 8px rgba(99,102,241,.35);
}

.dtc-week-result {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
}

.dtc-week-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
}
.dtc-week-card-label {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: var(--space-1);
}
.dtc-week-card-value {
    font-size: var(--text-lg);
    font-weight: 800;
    color: var(--color-text);
}
.dtc-week-card-sub {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-top: 2px;
}

/* ── Time Inputs ── */
.dtc-time-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.dtc-time-input {
    width: 62px;
    padding: var(--space-2) var(--space-2);
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--text-sm);
    font-family: var(--font-mono);
    font-weight: 700;
    text-align: center;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 1px 3px rgba(0,0,0,0.07);
}
.dtc-time-input:hover { border-color: var(--color-accent); }
.dtc-time-input:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }
.dtc-time-input.error { border-color: #EF4444; }

.dtc-time-colon {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--color-text-muted);
    user-select: none;
    margin: 0 -2px;
}

.dtc-ampm-btn {
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    min-width: 52px;
    text-align: center;
}
.dtc-ampm-btn.am { color: #F59E0B; border-color: rgba(245,158,11,.4); background: rgba(245,158,11,.08); }
.dtc-ampm-btn.pm { color: #7C3AED; border-color: rgba(124,58,237,.4); background: rgba(124,58,237,.08); }

.dtc-format-toggle {
    display: inline-flex;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    padding: 2px;
    margin-bottom: var(--space-3);
}

.dtc-format-btn {
    padding: 4px 12px;
    background: transparent;
    border: none;
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    font-size: var(--text-xs);
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.dtc-format-btn.active { background: var(--color-accent); color: #fff; }

/* ── Time Card Table ── */
.dtc-timecard-wrap {
    overflow-x: auto;
    margin-bottom: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.dtc-timecard-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 560px;
}

.dtc-timecard-table th {
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-tertiary);
    font-size: 10px;
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: .06em;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.dtc-timecard-table td {
    padding: var(--space-2) var(--space-3);
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.dtc-timecard-table tr:last-child td { border-bottom: none; }
.dtc-timecard-table tr:nth-child(even) td { background: rgba(99,102,241,.02); }

.dtc-timecard-day {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    width: 90px;
}

.dtc-timecard-time-input {
    padding: 6px 8px;
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--text-sm);
    font-family: var(--font-mono);
    width: 110px;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 1px 3px rgba(0,0,0,0.07);
}
.dtc-timecard-time-input:hover { border-color: var(--color-accent); }
.dtc-timecard-time-input:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }

.dtc-timecard-break-input {
    padding: 6px 8px;
    background: var(--color-surface);
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--text-sm);
    width: 70px;
    text-align: center;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: 0 1px 3px rgba(0,0,0,0.07);
}
.dtc-timecard-break-input:hover { border-color: var(--color-accent); }
.dtc-timecard-break-input:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(99,102,241,0.15); }

.dtc-timecard-total {
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text);
    font-family: var(--font-mono);
    white-space: nowrap;
}

.dtc-timecard-total--invalid { color: var(--color-text-muted); font-weight: 400; }

.dtc-timecard-remove {
    padding: 4px 8px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 12px;
    transition: all var(--transition-fast);
}
.dtc-timecard-remove:hover { border-color: #EF4444; color: #EF4444; }

.dtc-timecard-foot td {
    background: var(--color-bg-tertiary) !important;
    border-top: 2px solid var(--color-border);
    font-weight: 700;
}

.dtc-timecard-total-label {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: .05em;
}

.dtc-timecard-grand-total {
    font-size: var(--text-base);
    font-weight: 800;
    color: var(--color-accent);
    font-family: var(--font-mono);
}

.dtc-timecard-actions {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.dtc-timecard-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.dtc-timecard-btn:hover { border-color: var(--color-accent); color: var(--color-text); }
.dtc-timecard-btn--template { border-style: dashed; }

/* ── Pay Section ── */
.dtc-pay-section {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-3);
}

.dtc-pay-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    cursor: pointer;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    user-select: none;
}
.dtc-pay-toggle:hover { background: rgba(99,102,241,.04); }

.dtc-pay-toggle-icon {
    transition: transform .2s ease;
    color: var(--color-text-muted);
}
.dtc-pay-toggle-icon.open { transform: rotate(180deg); }

.dtc-pay-body {
    display: none;
    padding: var(--space-4);
    border-top: 1px solid var(--color-border);
}
.dtc-pay-body.open { display: block; }

.dtc-pay-inputs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.dtc-pay-result-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
}

.dtc-pay-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-3);
    text-align: center;
}

.dtc-pay-card-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: var(--space-1);
}

.dtc-pay-card-value {
    font-size: var(--text-base);
    font-weight: 800;
    color: var(--color-text);
}

.dtc-pay-card--total .dtc-pay-card-value { color: var(--color-accent); }

/* ── Summary Stat ── */
.dtc-summary-stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-3);
}

.dtc-stat {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.dtc-stat-label { font-size: var(--text-xs); color: var(--color-text-muted); font-weight: 500; }
.dtc-stat-value { font-size: var(--text-base); font-weight: 700; color: var(--color-text); }
.dtc-stat-value--accent { color: var(--color-accent); }

/* ── Expression Mode ── */
.dtc-expr-wrap {
    position: relative;
    margin-bottom: var(--space-3);
}

.dtc-expr-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text);
    font-size: var(--text-base);
    font-family: var(--font-mono);
    transition: border-color var(--transition-fast);
    box-sizing: border-box;
}
.dtc-expr-input:focus { outline: none; border-color: var(--color-accent); }
.dtc-expr-input.error { border-color: #EF4444; }
.dtc-expr-input::placeholder { color: var(--color-text-muted); font-size: var(--text-sm); font-family: inherit; }

.dtc-expr-hint {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    margin-bottom: var(--space-3);
    line-height: 1.5;
}

.dtc-expr-hint code {
    background: var(--color-bg-tertiary);
    padding: 1px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--color-accent);
}

.dtc-expr-result {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    margin-bottom: var(--space-3);
    display: none;
}
.dtc-expr-result.visible { display: block; }

.dtc-expr-result-value {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 800;
    color: var(--color-accent);
    font-family: var(--font-mono);
    margin-bottom: var(--space-2);
}

.dtc-expr-result-alts {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.dtc-expr-steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    display: none;
}
.dtc-expr-steps.visible { display: flex; }

.dtc-expr-step {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
}

.dtc-expr-step-op {
    font-weight: 700;
    color: var(--color-accent);
    min-width: 20px;
}
.dtc-expr-step-term { color: var(--color-text-secondary); flex: 1; }
.dtc-expr-step-running { color: var(--color-text); font-weight: 700; margin-left: auto; }

/* ── Time Zones ── */
.dtc-tz-controls {
    display: grid;
    grid-template-columns: 1fr 1fr auto;
    gap: var(--space-3);
    align-items: end;
    margin-bottom: var(--space-4);
}

.dtc-tz-time-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.dtc-tz-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.dtc-tz-card {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-4);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    position: relative;
}

.dtc-tz-card:hover { border-color: var(--color-accent); box-shadow: 0 4px 12px rgba(99,102,241,.1); }

.dtc-tz-card--from { border-color: var(--color-accent); background: rgba(99,102,241,.04); }

.dtc-tz-name {
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: .06em;
    margin-bottom: var(--space-1);
}

.dtc-tz-time {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--color-text);
    margin-bottom: 2px;
    font-variant-numeric: tabular-nums;
}

.dtc-tz-date { font-size: var(--text-xs); color: var(--color-text-muted); margin-bottom: var(--space-1); }

.dtc-tz-meta {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.dtc-tz-offset {
    font-size: var(--text-xs);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: rgba(99,102,241,.1);
    color: var(--color-accent);
    font-weight: 600;
}

.dtc-tz-dst {
    font-size: var(--text-xs);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: rgba(16,185,129,.1);
    color: #10B981;
    font-weight: 600;
}

.dtc-tz-add-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3);
    background: transparent;
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-muted);
    font-size: var(--text-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}
.dtc-tz-add-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }

.dtc-tz-remove {
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text-muted);
    font-size: 11px;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.dtc-tz-remove:hover { border-color: #EF4444; color: #EF4444; }

/* ── Toast ── */
.dtc-toast {
    position: fixed;
    bottom: var(--space-6);
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: #10B981;
    color: #fff;
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-xl);
    font-size: var(--text-sm);
    font-weight: 600;
    box-shadow: 0 8px 24px rgba(0,0,0,.2);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s ease, transform .2s ease;
    z-index: 9999;
    white-space: nowrap;
}
.dtc-toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Responsive ── */
@media (max-width: 768px) {
    .dtc-units-grid { grid-template-columns: repeat(2, 1fr); }
    .dtc-tz-grid { grid-template-columns: 1fr; }
    .dtc-pay-inputs { grid-template-columns: 1fr 1fr; }
    .dtc-pay-result-grid { grid-template-columns: 1fr; }
    .dtc-week-result { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .dtc-units-grid { grid-template-columns: repeat(2, 1fr); }
    .dtc-date-row { flex-direction: column; }
    .dtc-select { flex: none; width: 100%; }
    .dtc-op-row .dtc-select--op { flex: 0 0 100%; }
    .dtc-pay-inputs { grid-template-columns: 1fr; }
    .dtc-week-result { grid-template-columns: 1fr; }
    .dtc-tz-controls { grid-template-columns: 1fr 1fr; }
    .dtc-tz-controls > *:last-child { grid-column: 1 / -1; }
}