/* ==========================================================================
   Photography Tools — Camera LCD Dark UI Design System
   ========================================================================== */

/* --- Panel (dark card container) --- */
.calc-panel {
    background-color: var(--pt-chrome-bg);
    border: 1px solid var(--pt-border);
    border-radius: 1rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}
@media (min-width: 640px) {
    .calc-panel {
        padding: 2rem;
    }
}

.calc-panel__title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--pt-text);
    margin-bottom: 0.375rem;
    line-height: 1.25;
}
@media (min-width: 640px) {
    .calc-panel__title {
        font-size: 1.875rem;
    }
}

.calc-panel__desc {
    color: var(--pt-text-muted);
    font-size: 0.9375rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
}

/* --- Input fields --- */
.calc-input__label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--pt-text-muted);
    margin-bottom: 0.375rem;
}

.calc-input__field {
    width: 100%;
    padding: 0.625rem 0.75rem;
    background-color: var(--pt-surface);
    border: 1px solid var(--pt-border-strong);
    border-radius: 0.5rem;
    color: var(--pt-text);
    font-size: 0.875rem;
    line-height: 1.5;
    transition: border-color 150ms ease, box-shadow 150ms ease;
    -webkit-appearance: none;
    appearance: none;
}
.calc-input__field::placeholder {
    color: var(--pt-text-faint);
}
.calc-input__field:focus {
    outline: none;
    border-color: var(--pt-accent);
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.25);
}
/* Dark select arrow */
.calc-input__field option {
    background-color: var(--pt-surface);
    color: var(--pt-text);
}

/* Sub-label for smaller inputs within custom fields */
.calc-input__sublabel {
    display: block;
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--pt-text-faint);
    margin-bottom: 0.25rem;
}

/* Custom fields container (e.g., custom drone specs) */
.calc-custom-fields {
    background-color: var(--pt-surface);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1.5rem;
}
.calc-custom-fields__title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--pt-text-secondary);
    margin-bottom: 0.75rem;
}

/* --- Segmented toggle control (replaces radio buttons) --- */
.calc-toggle {
    display: inline-flex;
    background-color: var(--pt-surface);
    border-radius: 0.5rem;
    padding: 0.25rem;
    gap: 0.125rem;
}

.calc-toggle input[type="radio"] {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.calc-toggle__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 0.875rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--pt-text-muted);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: background-color 150ms ease, color 150ms ease;
    white-space: nowrap;
    user-select: none;
}
.calc-toggle__btn:hover {
    color: var(--pt-text-secondary);
}

/* Active state via adjacent sibling of checked radio */
.calc-toggle input[type="radio"]:checked + .calc-toggle__btn {
    background-color: #f59e0b;
    color: #111827;
}

/* --- Calculate button --- */
.calc-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 2rem;
    background-color: #f59e0b;
    color: #111827;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: 9999px;
    border: none;
    cursor: pointer;
    transition: background-color 150ms ease, box-shadow 150ms ease;
}
.calc-btn:hover {
    background-color: #fbbf24;
    box-shadow: 0 0 20px rgba(245, 158, 11, 0.25);
}
.calc-btn:active {
    background-color: #d97706;
}
.calc-btn--full-mobile {
    width: 100%;
}
@media (min-width: 640px) {
    .calc-btn--full-mobile {
        width: auto;
    }
}

/* --- Results readout --- */
.calc-readout {
    background-color: var(--pt-surface);
    border: 1px solid var(--pt-border);
    border-radius: 0.75rem;
    padding: 1rem;
    margin-top: 1.5rem;
}

.calc-readout__label {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--pt-text-muted);
    margin-bottom: 0.25rem;
}

.calc-readout__value {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--pt-text);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
}

.calc-readout__value--primary {
    color: var(--pt-accent-bright);
}

.calc-readout__value--lg {
    font-size: 1.875rem;
}

.calc-readout__note {
    font-size: 0.75rem;
    color: var(--pt-text-faint);
    margin-top: 0.25rem;
}

.calc-readout__unit {
    font-size: 0.75rem;
    color: var(--pt-text-faint);
}

/* Sub-section within readout (e.g., time ranges) */
.calc-readout__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.calc-readout__row + .calc-readout__row {
    margin-top: 0.5rem;
}
.calc-readout__row-label {
    font-size: 0.75rem;
    color: var(--pt-text-faint);
}
.calc-readout__row-value {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--pt-text);
}
.calc-readout__row-value--primary {
    color: var(--pt-accent-bright);
}

/* Readout section header */
.calc-readout__heading {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--pt-text-secondary);
    margin-bottom: 0.75rem;
}

/* --- Presets section (ND filter) --- */
.calc-presets {
    border-top: 1px solid var(--pt-border);
    margin-top: 1.5rem;
    padding-top: 1.5rem;
}
.calc-presets__title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--pt-text-secondary);
    margin-bottom: 0.75rem;
}

.calc-preset-btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    background-color: var(--pt-surface);
    border: 1px solid var(--pt-border-strong);
    color: var(--pt-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 150ms ease, border-color 150ms ease;
}
.calc-preset-btn:hover {
    background-color: var(--pt-surface-raised);
    border-color: var(--pt-border-strong);
}

/* Preset result area */
.calc-preset-result {
    background-color: var(--pt-surface);
    border: 1px solid var(--pt-border);
    border-radius: 0.75rem;
    padding: 1rem;
    margin-top: 1rem;
}
/* Override the inner combo rows */
.calc-preset-result .preset-combo-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.375rem 0.75rem;
    background-color: var(--pt-surface);
    border-radius: 0.5rem;
    border: 1px solid var(--pt-border-strong);
}
.calc-preset-result .preset-combo-row + .preset-combo-row {
    margin-top: 0.25rem;
}
.calc-preset-result .preset-combo-label {
    font-size: 0.875rem;
    color: var(--pt-text-secondary);
}
.calc-preset-result .preset-combo-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--pt-accent-bright);
}

/* --- Location picker --- */
.calc-location {
    background-color: var(--pt-surface);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 1rem;
}
.calc-location .calc-input__label {
    color: var(--pt-text-muted);
}
.calc-location .calc-input__field {
    background-color: var(--pt-surface);
    border-color: var(--pt-border-strong);
    color: var(--pt-text);
}
.calc-location__btn {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--pt-accent-bright);
    background-color: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.25);
    border-radius: 0.5rem;
    cursor: pointer;
    transition: background-color 150ms ease;
    white-space: nowrap;
}
.calc-location__btn:hover {
    background-color: rgba(245, 158, 11, 0.2);
}
.calc-location__status {
    font-size: 0.75rem;
    color: var(--pt-text-faint);
    margin-top: 0.5rem;
}

/* --- Stats grid cards (sun/moon, milky way) --- */
.calc-stat-card {
    background-color: var(--pt-surface);
    border: 1px solid var(--pt-border);
    border-radius: 0.5rem;
    padding: 1rem;
}
.calc-stat-card__icon {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.25rem;
}
.calc-stat-card__label {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--pt-text-muted);
}
.calc-stat-card__value {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--pt-text);
}
.calc-stat-card__value--sm {
    font-size: 0.875rem;
}
.calc-stat-card__sub {
    font-size: 0.75rem;
    color: var(--pt-text-faint);
}

/* Moon tip / special tip card */
.calc-tip-card {
    background-color: var(--pt-surface);
    border: 1px solid var(--pt-border);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-top: 1rem;
}
.calc-tip-card__label {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--pt-text-muted);
    margin-bottom: 0.25rem;
}
.calc-tip-card__text {
    font-size: 0.875rem;
    color: var(--pt-text-secondary);
}

/* Tips list */
.calc-tips-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.calc-tips-list li {
    font-size: 0.75rem;
    color: var(--pt-text-muted);
    padding: 0.125rem 0;
}
.calc-tips-list li::before {
    content: "\2022";
    color: var(--pt-text-faint);
    margin-right: 0.5rem;
}

/* --- Verdict panel (milky way) — semantic colors stay --- */
.calc-verdict {
    border-radius: 0.75rem;
    padding: 1rem;
    margin-bottom: 1rem;
}
.calc-verdict--excellent {
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
}
.calc-verdict--good {
    background-color: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.3);
}
.calc-verdict--fair {
    background-color: rgba(234, 179, 8, 0.1);
    border: 1px solid rgba(234, 179, 8, 0.3);
}
.calc-verdict--poor {
    background-color: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* --- Trail length estimator / subsection --- */
.calc-subsection {
    border-top: 1px solid var(--pt-border);
    margin-top: 1.5rem;
    padding-top: 1.5rem;
}
.calc-subsection__title {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--pt-text-secondary);
    margin-bottom: 0.5rem;
}

/* --- SVG diagram container (dark bg) --- */
.calc-diagram {
    margin-top: 1.5rem;
    display: flex;
    justify-content: center;
}

/* --- Sky chart container (stays dark — visualization) --- */
.calc-sky-chart {
    background-color: #111827;
    border-radius: 0.5rem;
    padding: 1rem;
    margin-top: 1.5rem;
    display: flex;
    justify-content: center;
    min-height: 220px;
}

/* --- Compass container --- */
.calc-compass {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
}

/* --- Timezone label --- */
.calc-timezone {
    font-size: 0.75rem;
    color: var(--pt-text-faint);
    margin-bottom: 0.75rem;
}

/* --- Long Exposure Table --- */
.calc-panel .le-table {
    width: 100%;
    font-size: 0.875rem;
    border-collapse: collapse;
}
.calc-panel .le-table thead tr {
    background-color: var(--pt-surface);
}
.calc-panel .le-table th {
    padding: 0.5rem 0.75rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--pt-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.025em;
    border-bottom: 1px solid var(--pt-border-strong);
}
.calc-panel .le-table tbody tr {
    border-bottom: 1px solid var(--pt-border);
}
.calc-panel .le-table tbody tr:hover {
    background-color: var(--pt-surface);
}
.calc-panel .le-table td {
    padding: 0.5rem 0.75rem;
    color: var(--pt-text-secondary);
}
.calc-panel .le-table td:first-child {
    font-weight: 500;
    color: var(--pt-text);
}
/* Effect badges — semantic colors stay */
.calc-panel .le-effect-waterfall {
    background-color: rgba(16, 185, 129, 0.15);
    color: #6ee7b7;
}
.calc-panel .le-effect-silky {
    background-color: rgba(59, 130, 246, 0.15);
    color: #93c5fd;
}
.calc-panel .le-effect-clouds {
    background-color: rgba(139, 92, 246, 0.15);
    color: #c4b5fd;
}
/* Legend dots */
.calc-panel .le-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.75rem;
}
.calc-panel .le-legend__item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.75rem;
    color: var(--pt-text-muted);
}
.calc-panel .le-legend__dot {
    display: inline-block;
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 0.25rem;
}
.calc-panel .le-legend__dot--waterfall { background-color: rgba(16, 185, 129, 0.4); }
.calc-panel .le-legend__dot--silky { background-color: rgba(59, 130, 246, 0.4); }
.calc-panel .le-legend__dot--clouds { background-color: rgba(139, 92, 246, 0.4); }