/* ==========================================================================
   ACCA Pearson VUE Style Spreadsheet Component CSS v2.0
   Pixel-perfect simulation of Pearson VUE ACCA CBE Spreadsheet
   ========================================================================== */

:root {
    --pv-window-bg: #ffffff;
    --pv-titlebar-bg: #e6e6e6;
    --pv-titlebar-border: #b0b0b0;
    --pv-toolbar-bg: #ececec;
    --pv-toolbar-border: #d0d0d0;
    --pv-btn-hover: #d8d8d8;
    --pv-btn-active: #c4c4c4;
    --pv-header-bg: #d4d4d4;
    --pv-header-border: #ababab;
    --pv-header-text: #222222;
    --pv-header-active-col: #ffff00;
    --pv-header-active-row: #316ac5;
    --pv-grid-line: #c8c8c8;
    --pv-cell-selected: #000000;
    --pv-formula-bg: #ffffff;
    --pv-formula-border: #b5b5b5;
}

/* Modal Overlay & Window Container */
.pv-spreadsheet-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(3px);
    z-index: 999999 !important;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif !important;
    direction: ltr !important;
    text-align: left !important;
}

/* Hard CSS Reset for All Elements inside the Spreadsheet Window */
.pv-spreadsheet-overlay *,
.pv-spreadsheet-overlay *::before,
.pv-spreadsheet-overlay *::after {
    box-sizing: border-box !important;
    text-transform: none !important;
    letter-spacing: normal !important;
    word-spacing: normal !important;
    text-shadow: none !important;
}

.pv-spreadsheet-window {
    background: var(--pv-window-bg);
    border: 1px solid #707070;
    border-radius: 4px;
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
    width: 95vw;
    max-width: 1280px;
    height: 85vh;
    max-height: 820px;
    display: flex !important;
    flex-direction: column !important;
    overflow: hidden;
    position: relative;
    user-select: none;
    transition: width 0.2s, height 0.2s, max-width 0.2s, max-height 0.2s;
}

.pv-spreadsheet-window.is-maximized {
    width: 99vw !important;
    max-width: 99vw !important;
    height: 96vh !important;
    max-height: 96vh !important;
    border-radius: 0 !important;
}

/* Global button and select isolation against theme styles */
.pv-spreadsheet-window button {
    all: unset !important;
    box-sizing: border-box !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: transparent !important;
    border: 1px solid transparent !important;
    border-radius: 2px !important;
    color: #333333 !important;
    font-family: Arial, sans-serif !important;
    font-size: 11px !important;
    font-weight: normal !important;
    line-height: 1 !important;
    margin: 0 !important;
    padding: 0 4px !important;
    cursor: pointer !important;
    outline: none !important;
    box-shadow: none !important;
    min-width: 24px !important;
    height: 24px !important;
    max-height: 24px !important;
    vertical-align: middle !important;
    transition: background 0.1s, border-color 0.1s !important;
}

.pv-spreadsheet-window button:hover:not(:disabled) {
    background: #d8d8d8 !important;
    border-color: #b0b0b0 !important;
    color: #000000 !important;
}

.pv-spreadsheet-window button:active:not(:disabled),
.pv-spreadsheet-window button.is-active {
    background: #c4c4c4 !important;
    border-color: #999999 !important;
    color: #000000 !important;
}

.pv-spreadsheet-window button:disabled {
    opacity: 0.4 !important;
    cursor: not-allowed !important;
}

.pv-spreadsheet-window select {
    all: unset !important;
    box-sizing: border-box !important;
    display: inline-block !important;
    width: auto !important;
    min-width: 58px !important;
    max-width: 75px !important;
    height: 22px !important;
    max-height: 22px !important;
    background: #ffffff !important;
    border: 1px solid #b5b5b5 !important;
    border-radius: 2px !important;
    padding: 0 4px !important;
    margin: 0 !important;
    font-family: Arial, sans-serif !important;
    font-size: 11px !important;
    color: #333333 !important;
    line-height: 20px !important;
    cursor: pointer !important;
    outline: none !important;
    box-shadow: none !important;
    vertical-align: middle !important;
}

.pv-spreadsheet-window select:focus {
    border-color: #0078d7 !important;
}

.pv-spreadsheet-window select option {
    background: #ffffff !important;
    color: #000000 !important;
    font-size: 11px !important;
}

/* Title Bar */
.pv-titlebar {
    height: 32px !important;
    min-height: 32px !important;
    background: linear-gradient(to bottom, #f0f0f0, #e0e0e0) !important;
    border-bottom: 1px solid var(--pv-titlebar-border) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    padding: 0 8px !important;
    box-sizing: border-box !important;
    cursor: default !important;
}

.pv-titlebar-left {
    display: flex !important;
    align-items: center !important;
    gap: 8px !important;
    font-size: 13px !important;
    font-weight: 700 !important;
    color: #333333 !important;
}

.pv-titlebar-icon {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    color: #2b579a !important;
    font-size: 14px !important;
}

.pv-titlebar-controls {
    display: flex !important;
    align-items: center !important;
    gap: 4px !important;
}

.pv-title-btn {
    width: 24px !important;
    height: 22px !important;
    border: 1px solid transparent !important;
    background: transparent !important;
    border-radius: 3px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer !important;
    font-size: 11px !important;
    color: #444 !important;
    padding: 0 !important;
}

.pv-title-btn:hover {
    background: #d8d8d8 !important;
    border-color: #b8b8b8 !important;
}

.pv-title-btn.pv-btn-close:hover {
    background: #e81123 !important;
    border-color: #e81123 !important;
    color: #ffffff !important;
}

/* Menu Bar */
.pv-menubar {
    height: 24px !important;
    min-height: 24px !important;
    background: var(--pv-toolbar-bg) !important;
    border-bottom: 1px solid var(--pv-toolbar-border) !important;
    display: flex !important;
    align-items: center !important;
    padding: 0 6px !important;
    gap: 2px !important;
    box-sizing: border-box !important;
    position: relative !important;
}

.pv-menu-item {
    padding: 2px 8px !important;
    font-size: 12px !important;
    color: #222 !important;
    cursor: pointer !important;
    border-radius: 2px !important;
    border: 1px solid transparent !important;
    user-select: none !important;
}

.pv-menu-item:hover,
.pv-menu-item.is-open {
    background: var(--pv-btn-hover) !important;
    border-color: #b0b0b0 !important;
}

/* Toolbar Rows */
.pv-toolbars-container {
    background: var(--pv-toolbar-bg) !important;
    border-bottom: 1px solid var(--pv-toolbar-border) !important;
    display: flex !important;
    flex-direction: column !important;
    padding: 4px 6px !important;
    gap: 4px !important;
    box-sizing: border-box !important;
}

.pv-toolbar-row {
    display: flex !important;
    align-items: center !important;
    gap: 3px !important;
    flex-wrap: nowrap !important;
    width: 100% !important;
    height: 26px !important;
    min-height: 26px !important;
}

.pv-tb,
.pv-tool-btn {
    min-width: 24px !important;
    max-width: 28px !important;
    height: 24px !important;
    padding: 0 4px !important;
    border: 1px solid transparent !important;
    background: transparent !important;
    border-radius: 2px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    cursor: pointer !important;
    font-size: 12px !important;
    color: #333333 !important;
    box-sizing: border-box !important;
}

.pv-tb:hover:not(:disabled),
.pv-tool-btn:hover:not(:disabled) {
    background: var(--pv-btn-hover) !important;
    border-color: #b0b0b0 !important;
    color: #000000 !important;
}

.pv-tb:active:not(:disabled),
.pv-tb.is-active,
.pv-tool-btn:active:not(:disabled),
.pv-tool-btn.is-active {
    background: var(--pv-btn-active) !important;
    border-color: #999999 !important;
    color: #000000 !important;
}

.pv-tool-sep {
    width: 1px !important;
    height: 18px !important;
    background: #c8c8c8 !important;
    margin: 0 3px !important;
    display: inline-block !important;
}

.pv-color-btn {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    position: relative !important;
}

.pv-ci,
.pv-color-indicator {
    width: 12px !important;
    height: 3px !important;
    background: #000000 !important;
    margin-top: 1px !important;
    display: block !important;
    border: 1px solid rgba(0, 0, 0, 0.2) !important;
}

.pv-ci-txt {
    background: #000000 !important;
}

.pv-ci-fill {
    background: #ffff00 !important;
}

/* Formula & Cell Ref Bar */
.pv-formula-bar-container {
    height: 28px !important;
    min-height: 28px !important;
    background: #f7f7f7 !important;
    border-bottom: 1px solid #d0d0d0 !important;
    display: flex !important;
    align-items: center !important;
    padding: 2px 6px !important;
    gap: 6px !important;
    box-sizing: border-box !important;
}

.pv-cell-address {
    width: 60px !important;
    min-width: 60px !important;
    max-width: 60px !important;
    height: 22px !important;
    background: #ffffff !important;
    border: 1px solid var(--pv-formula-border) !important;
    border-radius: 2px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 12px !important;
    font-weight: 700 !important;
    color: #333333 !important;
    font-family: monospace !important;
    user-select: text !important;
    box-sizing: border-box !important;
    margin: 0 !important;
    padding: 0 !important;
}

.pv-formula-divider {
    font-size: 12px !important;
    color: #888888 !important;
    font-style: italic !important;
    font-family: serif !important;
    padding: 0 2px !important;
    display: inline-block !important;
}

.pv-formula-input {
    flex: 1 !important;
    height: 22px !important;
    background: var(--pv-formula-bg) !important;
    border: 1px solid var(--pv-formula-border) !important;
    border-radius: 2px !important;
    padding: 0 6px !important;
    font-size: 12px !important;
    font-family: Arial, sans-serif !important;
    color: #111111 !important;
    outline: none !important;
    box-shadow: none !important;
    box-sizing: border-box !important;
    margin: 0 !important;
}

.pv-formula-input:focus {
    border-color: #0078d7 !important;
    background: #ffffff !important;
}

/* Spreadsheet Grid Viewport */
.pv-grid-viewport {
    flex: 1 !important;
    overflow: auto !important;
    background: #ffffff !important;
    position: relative !important;
    outline: none !important;
}

.pv-grid-table {
    border-collapse: collapse !important;
    border-spacing: 0 !important;
    table-layout: fixed !important;
    font-size: 11px !important;
    color: #000000 !important;
    background: #ffffff !important;
    user-select: none !important;
    width: auto !important;
    margin: 0 !important;
    border: none !important;
}

.pv-grid-table td,
.pv-grid-table th {
    padding: 0 !important;
    margin: 0 !important;
}

/* Header Cells */
.pv-corner-header {
    width: 38px !important;
    min-width: 38px !important;
    max-width: 38px !important;
    height: 22px !important;
    background: var(--pv-header-bg) !important;
    border-right: 1px solid var(--pv-header-border) !important;
    border-bottom: 1px solid var(--pv-header-border) !important;
    position: sticky !important;
    top: 0 !important;
    left: 0 !important;
    z-index: 20 !important;
    cursor: default !important;
    box-sizing: border-box !important;
}

.pv-col-header {
    height: 22px !important;
    background: var(--pv-header-bg) !important;
    border-right: 1px solid var(--pv-header-border) !important;
    border-bottom: 1px solid var(--pv-header-border) !important;
    text-align: center !important;
    font-weight: 600 !important;
    color: var(--pv-header-text) !important;
    position: sticky !important;
    top: 0 !important;
    z-index: 10 !important;
    cursor: default !important;
    box-sizing: border-box !important;
    line-height: 22px !important;
    font-size: 11px !important;
    font-family: Arial, sans-serif !important;
    position: relative !important;
}

.pv-col-header.is-active-col {
    background: var(--pv-header-active-col) !important;
    color: #000000 !important;
    font-weight: 700 !important;
}

.pv-col-resize {
    position: absolute !important;
    top: 0 !important;
    right: -2px !important;
    width: 5px !important;
    height: 100% !important;
    cursor: col-resize !important;
    z-index: 15 !important;
}

.pv-row-header {
    width: 38px !important;
    min-width: 38px !important;
    max-width: 38px !important;
    background: var(--pv-header-bg) !important;
    border-right: 1px solid var(--pv-header-border) !important;
    border-bottom: 1px solid var(--pv-header-border) !important;
    text-align: center !important;
    font-weight: 600 !important;
    color: var(--pv-header-text) !important;
    position: sticky !important;
    left: 0 !important;
    z-index: 10 !important;
    cursor: default !important;
    box-sizing: border-box !important;
    line-height: 21px !important;
    font-size: 11px !important;
    font-family: Arial, sans-serif !important;
    position: relative !important;
}

.pv-row-header.is-active-row {
    background: var(--pv-header-active-row) !important;
    color: #ffffff !important;
    font-weight: 700 !important;
}

.pv-row-resize {
    position: absolute !important;
    bottom: -2px !important;
    left: 0 !important;
    height: 5px !important;
    width: 100% !important;
    cursor: row-resize !important;
    z-index: 15 !important;
}

/* Data Cells */
.pv-cell {
    height: 21px !important;
    min-height: 21px !important;
    border-right: 1px solid var(--pv-grid-line) !important;
    border-bottom: 1px solid var(--pv-grid-line) !important;
    padding: 0 4px !important;
    font-size: 11px !important;
    font-family: Arial, sans-serif !important;
    line-height: 21px !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: clip !important;
    box-sizing: border-box !important;
    cursor: cell !important;
    position: relative !important;
    background: #ffffff !important;
    color: #000000 !important;
    vertical-align: middle !important;
    text-align: left;
}

.pv-cell.is-selected {
    outline: 2px solid var(--pv-cell-selected) !important;
    outline-offset: -2px !important;
    z-index: 5 !important;
}

.pv-cell.is-in-range {
    background-color: rgba(33, 150, 243, 0.18) !important;
}

.pv-cell.is-bold { font-weight: 700 !important; }
.pv-cell.is-italic { font-style: italic !important; }
.pv-cell.is-underline { text-decoration: underline !important; }
.pv-cell.align-left { text-align: left !important; }
.pv-cell.align-center { text-align: center !important; }
.pv-cell.align-right { text-align: right !important; }

/* Custom Cell Borders */
.pv-cell.has-bt { border-top: 1px solid #000000 !important; }
.pv-cell.has-bb { border-bottom: 1px solid #000000 !important; }
.pv-cell.has-bl { border-left: 1px solid #000000 !important; }
.pv-cell.has-br { border-right: 1px solid #000000 !important; }

/* Inline Cell Editor */
.pv-cell-editor {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    border: 2px solid #0078d7 !important;
    background: #ffffff !important;
    padding: 0 3px !important;
    font-size: 11px !important;
    font-family: Arial, sans-serif !important;
    color: #000000 !important;
    outline: none !important;
    box-shadow: none !important;
    box-sizing: border-box !important;
    z-index: 15 !important;
    margin: 0 !important;
    border-radius: 0 !important;
    line-height: 17px !important;
}

/* Popups / Menus / Color Pickers */
.pv-popup {
    position: absolute !important;
    background: #ffffff !important;
    border: 1px solid #999999 !important;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
    border-radius: 2px !important;
    z-index: 99999 !important;
    font-family: Arial, sans-serif !important;
    font-size: 12px !important;
    color: #222222 !important;
}

.pv-dropdown-menu,
.pv-ctx-menu {
    min-width: 170px !important;
    padding: 4px 0 !important;
}

.pv-dd-item {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    padding: 5px 14px !important;
    cursor: pointer !important;
    user-select: none !important;
    font-size: 11px !important;
    color: #222222 !important;
}

.pv-dd-item:hover:not(.is-disabled) {
    background: #2563eb !important;
    color: #ffffff !important;
}

.pv-dd-item:hover:not(.is-disabled) .pv-dd-sc {
    color: #ffffff !important;
}

.pv-dd-item.is-disabled {
    color: #999999 !important;
    cursor: not-allowed !important;
}

.pv-dd-label {
    display: inline-flex !important;
    align-items: center !important;
    gap: 6px !important;
}

.pv-dd-sc {
    font-size: 10px !important;
    color: #777777 !important;
    margin-left: 14px !important;
}

.pv-dd-sep {
    height: 1px !important;
    background: #e2e2e2 !important;
    margin: 4px 0 !important;
}

/* Color Picker Popup */
.pv-color-picker {
    padding: 8px !important;
    width: 176px !important;
}

.pv-cp-nofill {
    padding: 4px 8px !important;
    margin-bottom: 6px !important;
    border: 1px solid #d0d0d0 !important;
    border-radius: 2px !important;
    text-align: center !important;
    cursor: pointer !important;
    font-size: 11px !important;
    background: #f9f9f9 !important;
}

.pv-cp-nofill:hover {
    background: #e6e6e6 !important;
    border-color: #999999 !important;
}

.pv-cp-grid {
    display: grid !important;
    grid-template-columns: repeat(10, 14px) !important;
    gap: 2px !important;
}

.pv-cp-swatch {
    width: 14px !important;
    height: 14px !important;
    border: 1px solid rgba(0, 0, 0, 0.15) !important;
    cursor: pointer !important;
    border-radius: 1px !important;
    transition: transform 0.1s !important;
}

.pv-cp-swatch:hover {
    transform: scale(1.3) !important;
    border-color: #000000 !important;
    z-index: 2 !important;
}

/* Bottom Status Bar */
.pv-statusbar {
    height: 26px !important;
    min-height: 26px !important;
    background: #f0f0f0 !important;
    border-top: 1px solid #d4d4d4 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    padding: 0 10px !important;
    font-size: 11px !important;
    color: #555555 !important;
    box-sizing: border-box !important;
}

.pv-statusbar-left {
    display: flex !important;
    align-items: center !important;
    gap: 15px !important;
}

.pv-statusbar-right {
    display: flex !important;
    align-items: center !important;
    gap: 10px !important;
}

.pv-st-mode {
    font-weight: 600 !important;
    color: #333333 !important;
}

.pv-st-agg {
    font-family: monospace !important;
    font-size: 11px !important;
    color: #222222 !important;
    font-weight: 600 !important;
}

/* Action button inside exam portal */
.pv-open-spreadsheet-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
    color: #ffffff !important;
    border: 2px solid #1d4ed8;
    border-radius: 12px;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 6px 18px rgba(37, 99, 235, 0.35);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    margin: 15px 0;
    text-decoration: none !important;
    font-family: 'Cairo', 'Outfit', sans-serif;
}

.pv-open-spreadsheet-btn:hover {
    background: linear-gradient(135deg, #172554 0%, #1d4ed8 100%);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(37, 99, 235, 0.45);
}

.pv-open-spreadsheet-btn i {
    font-size: 1.25rem;
}

.pv-spreadsheet-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 8px;
}

/* AI Feedback / Results Card for Spreadsheet */
.pv-ai-feedback-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 14px;
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.04);
    text-align: left;
    direction: ltr;
}

.pv-ai-feedback-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #f1f5f9;
    padding-bottom: 14px;
    margin-bottom: 16px;
}

.pv-ai-score-pill {
    background: #eff6ff;
    color: #1d4ed8;
    border: 1px solid #bfdbfe;
    font-weight: 800;
    font-size: 1.1rem;
    padding: 6px 14px;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.pv-ai-score-pill.is-pass {
    background: #ecfdf5;
    color: #047857;
    border-color: #a7f3d0;
}

.pv-ai-score-pill.is-fail {
    background: #fef2f2;
    color: #b91c1c;
    border-color: #fecaca;
}

.pv-feedback-section-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: #1e293b;
    margin: 14px 0 8px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pv-feedback-list {
    margin: 0;
    padding-left: 20px;
    color: #334155;
    font-size: 0.9rem;
    line-height: 1.6;
}

.pv-feedback-list.correct-list li {
    color: #047857;
    margin-bottom: 4px;
}

.pv-feedback-list.incorrect-list li {
    color: #b91c1c;
    margin-bottom: 4px;
}

.pv-feedback-list.tips-list li {
    color: #4338ca;
    margin-bottom: 4px;
}

.pv-spreadsheet-preview-toggle {
    background: #f8fafc;
    border: 1px solid #cbd5e1;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: #475569;
    cursor: pointer;
    margin-top: 12px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.pv-spreadsheet-preview-toggle:hover {
    background: #f1f5f9;
}

@media (max-width: 768px) {
    .pv-spreadsheet-overlay {
        padding: 0;
    }
    .pv-spreadsheet-window {
        width: 100vw;
        height: 100vh;
        max-width: 100vw;
        max-height: 100vh;
        border-radius: 0;
    }
}