/* QTI Pack Creator - WCAG 2.2 AA Accessible Dark Theme */

:root {
    --bg: #0F1923;
    --surface: #172A3A;
    --surface-alt: #1E3448;
    --input-bg: #1E3A4F;
    --text: #F0F4F8;
    --text-secondary: #94A3B8;
    --border: #3B5468;
    --focus: #FACC15;
    --btn-primary: #2563EB;
    --btn-primary-hover: #3B82F6;
    --btn-accent: #059669;
    --btn-accent-hover: #10B981;
    --btn-secondary: #334155;
    --btn-secondary-hover: #475569;
    --white: #FFFFFF;
    --error: #EF4444;
    --success: #22C55E;
    --radius: 6px;
    --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font);
    font-size: 14px;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Skip link - WCAG 2.4.1 */
.skip-link {
    position: absolute;
    top: -100px;
    left: 8px;
    background: var(--focus);
    color: #000;
    padding: 8px 16px;
    border-radius: var(--radius);
    font-weight: bold;
    z-index: 9999;
    text-decoration: none;
}
.skip-link:focus { top: 8px; }

/* Focus ring - WCAG 2.4.7 */
*:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 2px;
}

/* Title bar */
.title-bar {
    background: var(--surface);
    text-align: center;
    padding: 16px 20px 12px;
}
.title-bar h1 {
    font-size: 22px;
    font-weight: bold;
    color: var(--text);
    margin: 0;
}
.subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* Container */
.container {
    max-width: 780px;
    margin: 0 auto;
    padding: 16px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 12px;
    width: 100%;
}

/* Cards */
.card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 16px;
}
.flex-grow { flex: 1; display: flex; flex-direction: column; }

/* Labels */
.label-bold { font-weight: bold; color: var(--text); display: block; margin-bottom: 4px; }
.label-lg { font-size: 16px; }
.section-label { font-size: 12px; font-weight: bold; color: var(--text-secondary); margin-bottom: 4px; }
.help-text { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }
.checkbox-label { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text); margin-top: 8px; }
.settings-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin: 8px 0; }
.settings-grid .input { margin-top: 4px; }
.nested-details { margin-top: 12px; padding-top: 8px; border-top: 1px solid var(--border); }
.nested-details summary { cursor: pointer; }
.image-row { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.image-row .label-bold { display: block; margin-bottom: 4px; }
.image-row input[type="file"] { padding: 6px; }

/* Inputs */
.input, .textarea {
    width: 100%;
    background: var(--input-bg);
    color: var(--text);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 12px;
    font-family: var(--font);
    font-size: 14px;
    min-height: 44px;
}
.textarea { resize: vertical; flex: 1; font-family: 'Consolas', 'Monaco', monospace; line-height: 1.4; }
.textarea-sm { flex: none; }
.input::placeholder, .textarea::placeholder { color: var(--text-secondary); }

/* Editor shell: textarea with line-number gutter */
.editor-shell {
    display: flex;
    flex: 1;
    background: var(--input-bg);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    min-height: 44px;
}
.editor-shell:focus-within {
    border-color: var(--focus);
}
.line-numbers {
    flex: 0 0 auto;
    width: 3.2em;
    padding: 10px 6px 10px 4px;
    background: var(--surface-alt);
    color: var(--text-secondary);
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 14px;
    line-height: 1.4;
    text-align: right;
    white-space: pre;
    overflow: hidden;
    user-select: none;
    border-right: 1px solid var(--border);
}
.textarea-in-shell {
    border: none;
    border-radius: 0;
    flex: 1;
    min-height: 0;
    width: auto;
}
.textarea-in-shell:focus {
    outline: none;
}

select.input {
    appearance: auto;
    cursor: pointer;
}

/* Buttons - WCAG 2.5.8 (44px target) */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    min-width: 100px;
    padding: 10px 20px;
    border: 2px solid transparent;
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s;
}
.btn-primary { background: var(--btn-primary); color: var(--white); border-color: var(--btn-primary); }
.btn-primary:hover { background: var(--btn-primary-hover); }
.btn-accent { background: var(--btn-accent); color: var(--white); border-color: var(--btn-accent); }
.btn-accent:hover { background: var(--btn-accent-hover); }
.btn-secondary { background: var(--btn-secondary); color: var(--text); border-color: var(--btn-secondary); }
.btn-secondary:hover { background: var(--btn-secondary-hover); }
.btn-lg { min-width: 180px; font-size: 15px; padding: 12px 28px; }
.btn-sm { min-width: 60px; min-height: 38px; padding: 6px 12px; font-size: 13px; }

/* Button rows */
.btn-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.btn-row.center { justify-content: center; }

/* Row layout */
.row { display: flex; align-items: center; gap: 8px; }

/* Status area */
.status-area {
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    line-height: 1.5;
}
.status-area.error { background: #3B1219; border: 1px solid var(--error); color: #FCA5A5; }
.error-text { color: #FCA5A5; }
.status-area.success { background: #14291D; border: 1px solid var(--success); color: #86EFAC; }
.status-area.info { background: var(--surface-alt); border: 1px solid var(--border); color: var(--text); }

/* Shortcuts bar */
.shortcuts-bar {
    background: var(--surface);
    text-align: center;
    padding: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.brand-line {
    display: block;
    margin-top: 4px;
}

/* Dialogs */
.dialog {
    background: var(--bg);
    color: var(--text);
    border: 2px solid var(--border);
    border-radius: 12px;
    padding: 0;
    max-width: 90vw;
    width: 600px;
    min-width: 320px;
    max-height: 90vh;
    min-height: 200px;
    overflow: auto;
    resize: both;
}
.dialog-wide { width: 720px; }
.dialog::backdrop { background: rgba(0, 0, 0, 0.7); }
.dialog h2 {
    font-size: 18px;
    margin: 0;
    padding: 14px 20px;
    background: var(--surface);
    border-radius: 10px 10px 0 0;
    cursor: move;
    user-select: none;
}
.dialog > *:not(h2) { padding-left: 24px; padding-right: 24px; }
.dialog > .btn-row:last-child { padding-bottom: 20px; }
.dialog .dialog-body { margin: 16px 0; display: flex; flex-direction: column; gap: 8px; }
.dialog .btn-row { justify-content: flex-end; }
.dialog.dragging { transition: none; }

/* Guide text in dialogs */
.guide-text {
    font-family: 'Consolas', 'Monaco', monospace;
    font-size: 13px;
    color: var(--text);
    line-height: 1.5;
    white-space: pre-wrap;
    background: var(--surface);
    padding: 12px;
    border-radius: var(--radius);
}
.types-list {
    padding-left: 24px;
    line-height: 1.8;
    font-size: 13px;
}

/* Checkbox grid for prompt builder */
.fieldset {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
}
.fieldset legend { padding: 0 8px; }
.checkbox-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px 16px;
}
.checkbox-row {
    display: flex;
    align-items: center;
    gap: 6px;
}
.checkbox-row input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--btn-primary);
    cursor: pointer;
}
.checkbox-row label {
    font-size: 13px;
    cursor: pointer;
    flex: 1;
}
.checkbox-row input[type="number"] {
    width: 48px;
    min-height: 32px;
    background: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 4px;
    text-align: center;
    font-size: 13px;
    font-family: var(--font);
}
.btn-step {
    min-width: 36px;
    min-height: 32px;
    padding: 2px 0;
    font-size: 16px;
    line-height: 1;
}

/* Responsive */
@media (max-width: 600px) {
    .container { padding: 8px 12px; }
    .checkbox-grid { grid-template-columns: 1fr; }
    .btn-row { flex-direction: column; }
    .btn { width: 100%; }
    .checkbox-row .btn-step { width: 44px; }
    /* Phones: dialogs take the full width, and rows inside them wrap so the
       token field gets a whole line to paste into. 16px inputs stop the iOS
       zoom-on-focus jump. */
    .dialog { width: 96vw; max-width: 96vw; resize: none; }
    .dialog .row { flex-wrap: wrap; }
    .dialog .row .input { flex: 1 1 100%; min-width: 0; }
    .input, .textarea, select.input { font-size: 16px; }
}

/* Reduced motion - WCAG */
@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; }
}