/* ==========================================================================
   UaBankPay 95 - Windows 95 design system
   ========================================================================== */

:root {
    /* Desktop and window surfaces */
    --desktop-teal: #008080;
    --surface: #c0c0c0;
    --surface-dark: #808080;
    --surface-light: #dfdfdf;
    --white: #ffffff;
    --black: #000000;

    /* Title bar */
    --title-active-from: #000080;
    --title-active-to: #1084d0;
    --title-inactive-bg: #808080;

    /* Content */
    --field-bg: #ffffff;
    --status-text: #222222;
    --error-red: #a01010;
    --success-green: #007000;

    /* Bevel edges */
    --bevel-outer-light: var(--white);
    --bevel-outer-dark: var(--black);
    --bevel-inner-light: var(--surface-light);
    --bevel-inner-dark: var(--surface-dark);
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--desktop-teal);
    color: var(--black);
    font-family: "Pixelated MS Sans Serif", "MS Sans Serif", Tahoma, Geneva, Verdana, sans-serif;
    font-size: 12px;
    line-height: 1.45;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
}

/* ==========================================================================
   Desktop backdrop
   ========================================================================== */

.desktop {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    padding: 32px 16px calc(48px + 32px); /* leaves room for the fixed taskbar */
}

.desktop-header {
    text-align: center;
    max-width: 640px;
}

.desktop-title {
    margin: 0;
    font-size: 28px;
    font-weight: bold;
    letter-spacing: 1px;
    color: var(--white);
    text-shadow: 2px 2px 0 var(--title-active-from);
}

.desktop-subtitle {
    margin: 8px 0 0;
    color: var(--white);
    text-shadow: 1px 1px 0 var(--title-active-from);
}

/* ==========================================================================
   Windows, title bars, chrome
   ========================================================================== */

.window {
    background: var(--surface);
    border: 2px solid;
    border-color: var(--bevel-outer-light) var(--bevel-outer-dark) var(--bevel-outer-dark) var(--bevel-outer-light);
    box-shadow:
        inset -1px -1px 0 var(--bevel-inner-dark),
        inset 1px 1px 0 var(--bevel-inner-light),
        3px 3px 0 rgba(0, 0, 0, 0.35);
    padding: 3px;
}

.program-window {
    width: min(720px, 100%);
}

.title-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 3px 4px;
    background: linear-gradient(90deg, var(--title-active-from), var(--title-active-to));
    color: var(--white);
    user-select: none;
}

.title-bar-icon {
    font-weight: bold;
    line-height: 1;
    padding: 0 2px;
}

.title-bar-text {
    margin: 0;
    flex: 1;
    font-size: 12px;
    font-weight: bold;
    letter-spacing: 0.5px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.title-bar-controls {
    display: inline-flex;
    gap: 2px;
}

.title-bar-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 16px;
    background: var(--surface);
    color: var(--black);
    font-size: 9px;
    font-family: inherit;
    font-weight: bold;
    line-height: 1;
    border: 1px solid;
    border-color: var(--bevel-outer-light) var(--bevel-outer-dark) var(--bevel-outer-dark) var(--bevel-outer-light);
    box-shadow: inset -1px -1px 0 var(--bevel-inner-dark), inset 1px 1px 0 var(--bevel-inner-light);
    cursor: default;
}

.title-bar-button--close {
    font-size: 8px;
}

.menu-bar {
    display: flex;
    gap: 2px;
    padding: 2px 1px;
    user-select: none;
}

.menu-item {
    padding: 2px 8px;
}

.menu-item:hover {
    background: var(--title-active-from);
    color: var(--white);
}

/* ==========================================================================
   Tabs
   ========================================================================== */

.tab-strip {
    display: flex;
    gap: 2px;
    padding: 6px 3px 0;
    position: relative;
    z-index: 1;
    margin-bottom: -2px;
}

.tab {
    appearance: none;
    background: var(--surface);
    color: var(--black);
    font: inherit;
    padding: 4px 14px 5px;
    cursor: pointer;
    border: 2px solid;
    border-color: var(--bevel-outer-light) var(--bevel-outer-dark) var(--surface) var(--bevel-outer-light);
    border-radius: 6px 6px 0 0;
    box-shadow: inset 1px 1px 0 var(--bevel-inner-light);
    position: relative;
    top: 2px;
}

.tab[aria-selected="true"] {
    top: 0;
    font-weight: bold;
    padding-top: 6px;
    padding-bottom: 7px;
    z-index: 2;
    /* cover the panel's top border under the active tab */
    border-bottom-color: var(--surface);
    margin-bottom: -3px;
}

.tab-panel {
    border: 2px solid;
    border-color: var(--bevel-inner-light) var(--bevel-inner-dark) var(--bevel-inner-dark) var(--bevel-inner-light);
    outline: 2px solid;
    outline-color: var(--bevel-outer-dark) var(--bevel-outer-dark) var(--bevel-outer-dark) var(--bevel-outer-dark);
    outline-offset: -4px;
    padding: 14px;
    background: var(--surface);
}

.tab-panel:focus-visible {
    outline-style: double;
}

/* ==========================================================================
   Group boxes and fields
   ========================================================================== */

.group-box {
    border: 2px solid;
    border-color: var(--bevel-inner-dark) var(--bevel-inner-light) var(--bevel-inner-light) var(--bevel-inner-dark);
    box-shadow: 1px 1px 0 var(--bevel-outer-dark), -1px -1px 0 var(--bevel-outer-light);
    margin: 0 0 14px;
    padding: 10px 12px;
    min-width: 0;
}

legend,
.output-heading {
    font-weight: bold;
    padding: 0 4px;
}

.field-row {
    margin-bottom: 10px;
}

.field-row:last-child {
    margin-bottom: 0;
}

.field-row--split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.field-cell {
    min-width: 0;
}

label {
    display: block;
    margin-bottom: 3px;
    font-weight: normal;
}

input[type="text"],
textarea,
output {
    display: block;
    width: 100%;
    padding: 3px 5px;
    font: inherit;
    color: var(--black);
    background: var(--field-bg);
    border: 2px solid;
    border-color: var(--bevel-inner-dark) var(--bevel-inner-light) var(--bevel-inner-light) var(--bevel-inner-dark);
    box-shadow: 1px 1px 0 var(--bevel-outer-dark);
    border-radius: 0;
}

textarea {
    resize: vertical;
    min-height: 56px;
}

input[type="text"]:focus-visible,
textarea:focus-visible {
    outline: 2px dotted var(--black);
    outline-offset: -5px;
}

input:user-invalid {
    border-color: var(--error-red);
}

.field-hint {
    margin: 3px 0 0;
    font-size: 11px;
    color: var(--status-text);
}

.field-hint code,
.about-facts code {
    font-family: "Courier New", monospace;
    font-size: 11px;
}

.checkbox-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
}

.checkbox-row label {
    margin: 0;
}

input[type="checkbox"] {
    appearance: none;
    width: 15px;
    height: 15px;
    margin: 0;
    flex-shrink: 0;
    background: var(--field-bg);
    border: 2px solid;
    border-color: var(--bevel-inner-dark) var(--bevel-inner-light) var(--bevel-inner-light) var(--bevel-inner-dark);
    box-shadow: 1px 1px 0 var(--bevel-outer-dark);
    display: inline-grid;
    place-content: center;
    cursor: pointer;
}

input[type="checkbox"]::before {
    content: "";
    width: 7px;
    height: 7px;
    transform: scale(0);
    background:
        linear-gradient(135deg, transparent 42%, var(--black) 42%, var(--black) 58%, transparent 58%),
        linear-gradient(45deg, transparent 42%, var(--black) 42%, var(--black) 58%, transparent 58%);
    background-size: 100% 100%;
    clip-path: polygon(14% 44%, 0 62%, 40% 100%, 100% 18%, 84% 4%, 38% 70%);
}

input[type="checkbox"]:checked::before {
    transform: scale(1);
}

input[type="checkbox"]:focus-visible {
    outline: 2px dotted var(--black);
    outline-offset: 2px;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.win95-button {
    appearance: none;
    font: inherit;
    color: var(--black);
    background: var(--surface);
    padding: 5px 14px;
    min-height: 26px;
    cursor: pointer;
    border: 2px solid;
    border-color: var(--bevel-outer-light) var(--bevel-outer-dark) var(--bevel-outer-dark) var(--bevel-outer-light);
    box-shadow: inset -1px -1px 0 var(--bevel-inner-dark), inset 1px 1px 0 var(--bevel-inner-light);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.win95-button:hover {
    box-shadow:
        inset -1px -1px 0 var(--bevel-inner-dark),
        inset 1px 1px 0 var(--bevel-inner-light),
        inset 0 0 0 60px rgba(255, 255, 255, 0.35);
}

.win95-button:active {
    border-color: var(--bevel-outer-dark) var(--bevel-outer-light) var(--bevel-outer-light) var(--bevel-outer-dark);
    box-shadow: inset 1px 1px 0 var(--bevel-inner-dark);
    padding: 6px 13px 4px 15px;
}

.win95-button:focus-visible {
    outline: 2px dotted var(--black);
    outline-offset: -6px;
}

.win95-button--primary {
    font-weight: bold;
    box-shadow:
        inset -1px -1px 0 var(--bevel-inner-dark),
        inset 1px 1px 0 var(--bevel-inner-light),
        inset 2px 2px 0 var(--bevel-outer-light);
}

.win95-button--link {
    color: var(--black);
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

/* ==========================================================================
   Output area
   ========================================================================== */

.output-group {
    margin-top: 4px;
}

.output-link-row {
    background: var(--field-bg);
    border: 2px solid;
    border-color: var(--bevel-inner-dark) var(--bevel-inner-light) var(--bevel-inner-light) var(--bevel-inner-dark);
    box-shadow: 1px 1px 0 var(--bevel-outer-dark);
    padding: 6px 8px;
    word-break: break-all;
}

.output-link {
    font-family: "Courier New", monospace;
    font-size: 11px;
    white-space: pre-wrap;
}

.output-meta {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 6px;
    font-size: 11px;
    color: var(--status-text);
}

.qr-preview {
    margin-top: 10px;
    text-align: center;
}

.qr-preview-heading {
    margin: 0 0 8px;
    font-size: 11px;
}

.qr-image {
    width: 160px;
    height: 160px;
    padding: 4px;
    background: var(--field-bg);
    border: 2px solid;
    border-color: var(--bevel-inner-light) var(--bevel-inner-dark) var(--bevel-inner-dark) var(--bevel-inner-light);
    box-shadow: inset 1px 1px 0 var(--bevel-outer-dark);
    image-rendering: pixelated;
    image-rendering: crispEdges;
}

/* ==========================================================================
   Tables
   ========================================================================== */

.properties-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--field-bg);
    border: 2px solid;
    border-color: var(--bevel-inner-dark) var(--bevel-inner-light) var(--bevel-inner-light) var(--bevel-inner-dark);
    font-size: 11px;
}

.properties-table th,
.properties-table td {
    text-align: left;
    padding: 4px 8px;
    vertical-align: top;
    word-break: break-word;
}

.properties-table tbody tr:nth-child(odd) {
    background: #efefef;
}

.properties-table th {
    background: var(--surface);
    font-weight: bold;
    border-bottom: 1px solid var(--surface-dark);
}

.properties-table td:first-child {
    font-weight: bold;
    white-space: nowrap;
}

#roundtrip-note:not(:empty) {
    margin-top: 8px;
}

/* ==========================================================================
   About panel
   ========================================================================== */

.about-layout {
    display: flex;
    gap: 20px;
    align-items: center;
    margin-bottom: 14px;
}

.about-logo {
    flex-shrink: 0;
    width: 72px;
    height: 72px;
    display: grid;
    place-content: center;
    font-size: 40px;
    font-weight: bold;
    color: var(--white);
    background: linear-gradient(135deg, var(--title-active-to), var(--title-active-from));
    border: 2px solid;
    border-color: var(--bevel-outer-light) var(--bevel-outer-dark) var(--bevel-outer-dark) var(--bevel-outer-light);
    box-shadow: inset -2px -2px 0 rgba(0, 0, 0, 0.25), inset 2px 2px 0 rgba(255, 255, 255, 0.35);
    text-shadow: 2px 2px 0 var(--title-active-from);
}

.about-text h2 {
    margin: 0 0 6px;
    font-size: 16px;
}

.about-text p {
    margin: 0 0 10px;
}

.about-facts {
    margin: 0;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2px 12px;
}

.about-facts dt {
    font-weight: bold;
}

.about-facts dd {
    margin: 0;
    word-break: break-all;
}

.about-links {
    margin: 14px 0 0;
}

/* ==========================================================================
   Status bar
   ========================================================================== */

.status-bar {
    display: flex;
    gap: 3px;
    margin-top: 10px;
}

.status-cell {
    border: 2px solid;
    border-color: var(--bevel-inner-dark) var(--bevel-inner-light) var(--bevel-inner-light) var(--bevel-inner-dark);
    box-shadow: 1px 1px 0 var(--bevel-outer-dark);
    padding: 2px 8px;
    font-size: 11px;
    color: var(--status-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.status-cell--grow {
    flex: 1;
    min-width: 0;
}

.status-message--error {
    color: var(--error-red);
    font-weight: bold;
}

.status-message--success {
    color: var(--success-green);
    font-weight: bold;
}

/* ==========================================================================
   Modal dialog
   ========================================================================== */

.dialog-overlay {
    position: fixed;
    inset: 0;
    display: grid;
    place-content: center;
    background: rgba(0, 0, 0, 0.25);
    padding: 16px;
    z-index: 50;
}

.dialog-overlay[hidden] {
    display: none;
}

.dialog-window {
    width: min(420px, 100%);
}

.dialog-body {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 16px 12px 12px;
}

.dialog-body p {
    margin: 0;
    overflow-wrap: anywhere;
}

.dialog-icon {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: grid;
    place-content: center;
    font-size: 18px;
    font-weight: bold;
    color: var(--white);
    background: var(--error-red);
    border: 2px solid;
    border-color: var(--bevel-inner-light) var(--bevel-inner-dark) var(--bevel-inner-dark) var(--bevel-inner-light);
    clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

.dialog-actions {
    display: flex;
    justify-content: center;
    padding: 4px 12px 12px;
}

/* ==========================================================================
   Taskbar
   ========================================================================== */

.taskbar {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: stretch;
    gap: 4px;
    padding: 3px 4px;
    background: var(--surface);
    border-top: 2px solid;
    border-color: var(--bevel-outer-light) var(--bevel-outer-dark) var(--bevel-outer-dark) var(--bevel-outer-light);
    box-shadow: inset 0 1px 0 var(--bevel-inner-light);
    z-index: 40;
}

.taskbar-start,
.taskbar-task {
    appearance: none;
    font: inherit;
    font-weight: bold;
    color: var(--black);
    background: var(--surface);
    border: 2px solid;
    border-color: var(--bevel-outer-light) var(--bevel-outer-dark) var(--bevel-outer-dark) var(--bevel-outer-light);
    box-shadow: inset -1px -1px 0 var(--bevel-inner-dark), inset 1px 1px 0 var(--bevel-inner-light);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 10px;
    min-height: 30px;
    cursor: pointer;
    white-space: nowrap;
}

.taskbar-start:hover,
.taskbar-task:hover {
    filter: brightness(1.06);
}

.taskbar-task {
    font-weight: normal;
    flex: 1;
    min-width: 0;
    max-width: 320px;
    justify-content: flex-start;
    overflow: hidden;
    text-overflow: ellipsis;
}

.taskbar-task--active {
    background-image:
        repeating-linear-gradient(45deg, rgba(255, 255, 255, 0.5) 0 1px, transparent 1px 2px);
    font-weight: bold;
}

.taskbar-divider {
    border-left: 2px solid;
    border-color: var(--bevel-inner-dark) var(--bevel-inner-light);
    margin: 2px 2px;
}

.taskbar-tray {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 3px 10px;
    border: 2px solid;
    border-color: var(--bevel-inner-dark) var(--bevel-inner-light) var(--bevel-inner-light) var(--bevel-inner-dark);
    font-size: 11px;
    min-height: 30px;
}

/* ==========================================================================
   Responsive behavior
   ========================================================================== */

@media (max-width: 560px) {
    .desktop {
        padding: 16px 8px calc(44px + 16px);
    }

    .program-window {
        width: 100%;
    }

    .tab-panel {
        padding: 10px;
    }

    .field-row--split {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .about-layout {
        flex-direction: column;
        align-items: flex-start;
    }

    .taskbar-task {
        max-width: none;
    }

    .button-row .win95-button {
        flex: 1 1 auto;
    }
}