/* ── diode-import-modal.css ──────────────────────────
   Modal dialog for importing diode I-V curve data via
   CSV paste or library selection. Matches the existing
   dark obsidian theme with glassmorphism effects.
   Pairs with: design-tokens.css, style.css
   ──────────────────────────────────────────────────── */

/* ═══════════════════════════════════════════════════
   MODAL OVERLAY & CONTAINER
   Frosted glass backdrop consistent with other app modals
   ═══════════════════════════════════════════════════ */
.diode-import-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.diode-import-overlay.visible {
    opacity: 1;
}

.diode-import-modal {
    width: 420px;
    max-width: 92vw;
    max-height: 85vh;
    overflow-y: auto;
    background: var(--color-bg-secondary, #10131A);
    border: 1px solid var(--color-border, #45474B);
    border-radius: 12px;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5),
                0 0 0 1px rgba(255, 255, 255, 0.05) inset;
    transform: scale(0.95) translateY(8px);
    transition: transform 0.2s ease;
    padding: 0;
}

.diode-import-overlay.visible .diode-import-modal {
    transform: scale(1) translateY(0);
}

/* ═══════════════════════════════════════════════════
   MODAL HEADER
   Copper accent strip on the left edge for brand cohesion
   ═══════════════════════════════════════════════════ */
.diode-import-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--color-border, #45474B);
    border-left: 3px solid var(--color-primary, #FFB77B);
}

.diode-import-header h3 {
    margin: 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text-primary, #E1E2EB);
    letter-spacing: 0.02em;
}

.diode-import-close {
    background: none;
    border: none;
    color: var(--color-text-tertiary, #909095);
    cursor: pointer;
    font-size: 20px;
    line-height: 1;
    padding: 4px 8px;
    border-radius: 4px;
    transition: color 0.15s, background 0.15s;
}

.diode-import-close:hover {
    color: var(--color-text-primary, #E1E2EB);
    background: var(--color-bg-hover, rgba(255, 255, 255, 0.06));
}

/* ═══════════════════════════════════════════════════
   MODAL BODY
   Two-tab layout: Library dropdown + CSV paste area
   ═══════════════════════════════════════════════════ */
.diode-import-body {
    padding: 16px 20px;
}

/* ── Tab Switcher ── */
.diode-import-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 16px;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--color-border, #45474B);
}

.diode-import-tab {
    flex: 1;
    padding: 8px 12px;
    background: transparent;
    border: none;
    color: var(--color-text-tertiary, #909095);
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    text-align: center;
}

.diode-import-tab:not(:last-child) {
    border-right: 1px solid var(--color-border, #45474B);
}

.diode-import-tab.active {
    background: var(--color-primary-surface, rgba(255, 183, 123, 0.1));
    color: var(--color-primary, #FFB77B);
    font-weight: 600;
}

.diode-import-tab:hover:not(.active) {
    background: var(--color-bg-hover, rgba(255, 255, 255, 0.06));
    color: var(--color-text-secondary, #C6C6CB);
}

/* ── Tab Panels ── */
.diode-import-panel {
    display: none;
}

.diode-import-panel.active {
    display: block;
}

/* ── Library Tab ── */
.diode-library-select {
    width: 100%;
    padding: 10px 12px;
    background: var(--color-bg-tertiary, rgba(255, 255, 255, 0.04));
    border: 1px solid var(--color-border, #45474B);
    border-radius: 6px;
    color: var(--color-text-primary, #E1E2EB);
    font-size: 13px;
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    /* Custom dropdown arrow using CSS */
    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='%23909095' d='M3 4.5L6 7.5L9 4.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
    padding-right: 30px;
}

.diode-library-select:focus {
    outline: none;
    border-color: var(--color-primary, #FFB77B);
    box-shadow: 0 0 0 2px var(--color-primary-surface, rgba(255, 183, 123, 0.1));
}

.diode-library-info {
    margin-top: 10px;
    padding: 10px 12px;
    background: var(--color-bg-tertiary, rgba(255, 255, 255, 0.04));
    border-radius: 6px;
    font-size: 12px;
    color: var(--color-text-secondary, #C6C6CB);
    display: none;
}

.diode-library-info.visible {
    display: block;
}

.diode-library-info .param-row {
    display: flex;
    justify-content: space-between;
    padding: 3px 0;
}

.diode-library-info .param-label {
    color: var(--color-text-tertiary, #909095);
}

.diode-library-info .param-value {
    color: var(--color-text-primary, #E1E2EB);
    font-family: 'Roboto Mono', monospace;
    font-size: 11px;
}

/* ── CSV Tab ── */
.diode-csv-textarea {
    width: 100%;
    min-height: 120px;
    padding: 10px 12px;
    background: var(--color-bg-tertiary, rgba(255, 255, 255, 0.04));
    border: 1px solid var(--color-border, #45474B);
    border-radius: 6px;
    color: var(--color-text-primary, #E1E2EB);
    font-family: 'Roboto Mono', monospace;
    font-size: 12px;
    line-height: 1.5;
    resize: vertical;
    transition: border-color 0.15s;
}

.diode-csv-textarea::placeholder {
    color: var(--color-text-disabled, #45474B);
}

.diode-csv-textarea:focus {
    outline: none;
    border-color: var(--color-primary, #FFB77B);
    box-shadow: 0 0 0 2px var(--color-primary-surface, rgba(255, 183, 123, 0.1));
}

.diode-csv-hint {
    margin-top: 6px;
    font-size: 11px;
    color: var(--color-text-tertiary, #909095);
    line-height: 1.4;
}

/* ═══════════════════════════════════════════════════
   FIT RESULTS
   R² badge + fitted parameter readout
   ═══════════════════════════════════════════════════ */
.diode-fit-results {
    margin-top: 14px;
    padding: 12px;
    background: var(--color-bg-tertiary, rgba(255, 255, 255, 0.04));
    border: 1px solid var(--color-border, #45474B);
    border-radius: 8px;
    display: none;
}

.diode-fit-results.visible {
    display: block;
}

.diode-fit-quality {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

/* R² quality badges — color-coded for instant readability */
.diode-fit-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}

.diode-fit-badge.excellent {
    background: rgba(0, 230, 118, 0.12);
    color: var(--color-success, #00E676);
}

.diode-fit-badge.good {
    background: rgba(255, 171, 0, 0.12);
    color: var(--color-warning, #FFAB00);
}

.diode-fit-badge.poor {
    background: rgba(255, 180, 171, 0.12);
    color: var(--color-error, #FFB4AB);
}

.diode-fit-r2 {
    font-size: 12px;
    color: var(--color-text-secondary, #C6C6CB);
    font-family: 'Roboto Mono', monospace;
}

.diode-fit-params {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
}

.diode-fit-param {
    text-align: center;
}

.diode-fit-param-label {
    font-size: 10px;
    color: var(--color-text-tertiary, #909095);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.diode-fit-param-value {
    font-size: 13px;
    color: var(--color-text-primary, #E1E2EB);
    font-family: 'Roboto Mono', monospace;
    margin-top: 2px;
}

/* ═══════════════════════════════════════════════════
   MODAL FOOTER
   Action buttons — Fit, Apply, Clear, Cancel
   ═══════════════════════════════════════════════════ */
.diode-import-footer {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px 16px;
    border-top: 1px solid var(--color-border, #45474B);
}

.diode-import-footer .btn-fit {
    padding: 8px 16px;
    background: var(--color-primary, #FFB77B);
    color: var(--color-bg-primary, #0B0E14);
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}

.diode-import-footer .btn-fit:hover {
    background: var(--color-primary-light, #FFDCC2);
    box-shadow: 0 2px 8px rgba(255, 183, 123, 0.3);
}

.diode-import-footer .btn-fit:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.diode-import-footer .btn-apply {
    padding: 8px 16px;
    background: var(--color-success, #00E676);
    color: var(--color-bg-primary, #0B0E14);
    border: none;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
    display: none;
}

.diode-import-footer .btn-apply.visible {
    display: inline-flex;
}

.diode-import-footer .btn-apply:hover {
    filter: brightness(1.1);
    box-shadow: 0 2px 8px rgba(0, 230, 118, 0.3);
}

.diode-import-footer .btn-secondary {
    padding: 8px 16px;
    background: transparent;
    color: var(--color-text-secondary, #C6C6CB);
    border: 1px solid var(--color-border, #45474B);
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.15s;
}

.diode-import-footer .btn-secondary:hover {
    background: var(--color-bg-hover, rgba(255, 255, 255, 0.06));
    border-color: var(--color-text-tertiary, #909095);
}

.diode-import-footer .spacer {
    flex: 1;
}

/* ═══════════════════════════════════════════════════
   IV CHART SCALE TOGGLE
   Auto/Fixed button overlaid on the chart canvas
   ═══════════════════════════════════════════════════ */
.iv-scale-toggle {
    position: absolute;
    top: 4px;
    right: 4px;
    padding: 2px 8px;
    background: var(--color-bg-elevated, #1D2026);
    border: 1px solid var(--color-border, #45474B);
    border-radius: 4px;
    color: var(--color-text-tertiary, #909095);
    font-size: 10px;
    cursor: pointer;
    z-index: 2;
    transition: all 0.15s;
    line-height: 1.4;
}

.iv-scale-toggle:hover {
    color: var(--color-primary, #FFB77B);
    border-color: var(--color-primary, #FFB77B);
}

.iv-scale-toggle.auto-active {
    color: var(--color-primary, #FFB77B);
    background: var(--color-primary-surface, rgba(255, 183, 123, 0.1));
    border-color: var(--color-primary, #FFB77B);
}

/* ═══════════════════════════════════════════════════
   IMPORT BUTTON IN PROPERTIES PANEL
   Compact inline button matching existing panel style
   ═══════════════════════════════════════════════════ */
.btn-diode-import {
    padding: 6px 12px;
    background: var(--color-primary-surface, rgba(255, 183, 123, 0.1));
    color: var(--color-primary, #FFB77B);
    border: 1px solid rgba(255, 183, 123, 0.2);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 6px;
    width: 100%;
    justify-content: center;
}

.btn-diode-import:hover {
    background: rgba(255, 183, 123, 0.18);
    border-color: var(--color-primary, #FFB77B);
    box-shadow: 0 2px 8px rgba(255, 183, 123, 0.15);
}

/* Icon inside button */
.btn-diode-import .material-symbols-outlined {
    font-size: 16px;
}

/* ── Clear data link ── */
.btn-diode-clear {
    background: none;
    border: none;
    color: var(--color-text-tertiary, #909095);
    font-size: 11px;
    cursor: pointer;
    padding: 2px 4px;
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.15s;
}

.btn-diode-clear:hover {
    color: var(--color-error, #FFB4AB);
}