/* ==========================================================================
   Pre-Operative Instruction Builder — clinical workstation styles
   Fully self-contained: system fonts only, no CDN, no gradients.
   ========================================================================== */

:root {
    --bg: #F3F5F8;
    --workspace: #EEF1F5;
    --panel: #FFFFFF;
    --ink: #1B2531;
    --ink-2: #55606D;
    --ink-3: #8A94A1;
    --line: #E2E6EC;
    --line-strong: #CDD5DF;
    --accent: #2B5FC7;
    --accent-deep: #1E4AA0;
    --accent-soft: #EDF2FB;
    --accent-line: #BFD3F0;
    --row-selected: #F5F9FF;
    --success: #2FA865;
    --success-soft: #EAF6F0;
    --danger: #C1403A;
    --danger-soft: #FBEEED;
    --amber: #B7791F;
    --amber-soft: #FCF3E3;
    --radius: 10px;
    --radius-sm: 6px;
    --shadow-panel: 0 1px 2px rgba(20, 30, 45, 0.05);
    --shadow-paper: 0 1px 2px rgba(20, 30, 45, 0.08), 0 14px 34px -12px rgba(20, 30, 45, 0.22);
    --font-ui: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-doc: "Segoe UI", -apple-system, system-ui, Roboto, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--ink);
    font-family: var(--font-ui);
    font-size: 14px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body.lock { overflow: hidden; }

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
    padding: 0;
    color: inherit;
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
::selection { background: #D3E2F7; }

.hidden { display: none !important; }

/* ==========================================================================
   App shell
   ========================================================================== */

.app { min-height: 100vh; display: flex; flex-direction: column; }

.appbar {
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
}

.appbar-inner {
    max-width: 1320px;
    margin: 0 auto;
    padding: 14px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.appbar-title h1 {
    margin: 0;
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--ink);
}

.appbar-title p {
    margin: 2px 0 0;
    font-size: 12.5px;
    color: var(--ink-2);
}

.appbar-side { display: flex; align-items: center; gap: 12px; }

.demo-badge {
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.09em;
    color: var(--accent-deep);
    background: var(--accent-soft);
    border: 1px solid var(--accent-line);
    border-radius: 999px;
    padding: 4px 11px;
    text-transform: uppercase;
}

.privacy-pill {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 12.5px;
    font-weight: 600;
    color: #1E7A4B;
    background: var(--success-soft);
    border: 1px solid #C9EBD7;
    border-radius: 999px;
    padding: 5px 12px;
}

.privacy-dot, .live-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 0 3px rgba(47, 168, 107, 0.16);
    flex: none;
}

/* ==========================================================================
   Layout: 40 / 60
   ========================================================================== */

.layout {
    flex: 1;
    width: 100%;
    max-width: 1320px;
    margin: 0 auto;
    padding: 26px 28px 12px;
    display: grid;
    grid-template-columns: minmax(0, 40fr) minmax(0, 60fr);
    gap: 26px;
    align-items: start;
}

/* -------- Left: builder panel -------- */

.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-panel);
    padding: 22px 24px 18px;
}

.panel-topbar {
    display: flex;
    justify-content: flex-end;
    margin: -8px 0 10px;
}

.panel-topbar .util-manage { padding: 6px 10px; }

.panel-title {
    margin: 0 0 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.11em;
    text-transform: uppercase;
    color: var(--ink-2);
    padding-bottom: 14px;
    border-bottom: 1px solid var(--line);
}

.field { margin-bottom: 22px; }
.field:last-child { margin-bottom: 0; }

.field-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 8px;
}

.label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 7px;
}

.label-sm { font-size: 12px; font-weight: 500; color: var(--ink-2); margin-bottom: 5px; }

.field-note {
    font-size: 11px;
    color: var(--ink-3);
    font-weight: 500;
}

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

/* -------- Inputs -------- */

.input {
    width: 100%;
    height: 42px;
    padding: 0 13px;
    font-size: 13.5px;
    font-family: inherit;
    color: var(--ink);
    background: var(--panel);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
    appearance: none;
}

.input:hover { border-color: #B8C3D0; }

.input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(43, 95, 199, 0.14);
}

.input::placeholder { color: #A3ACB8; }

.textarea {
    height: auto;
    min-height: 74px;
    padding: 10px 13px;
    resize: vertical;
    line-height: 1.5;
}

/* -------- Select -------- */

.select-wrap { position: relative; }

.select {
    width: 100%;
    height: 42px;
    padding: 0 36px 0 13px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--ink);
    background: var(--panel);
    border: 1px solid var(--line-strong);
    border-radius: var(--radius-sm);
    appearance: none;
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2356606D' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.select:hover { border-color: #B8C1D0; }
.select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(43, 95, 199, 0.16);
}

/* -------- Instruction rows -------- */

.op-list { display: flex; flex-direction: column; gap: 8px; }

.op-row {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 11px 13px;
    border: 1px solid var(--line);
    border-radius: 8px;
    cursor: pointer;
    user-select: none;
    transition: background 0.12s ease, border-color 0.12s ease;
    background: var(--panel);
}

.op-row:hover { background: #F7F9FB; }

.op-row.selected {
    background: var(--row-selected);
    border-color: var(--accent-line);
}

.op-row input {
    position: absolute;
    opacity: 0;
    width: 1px; height: 1px;
    pointer-events: none;
}

.op-box {
    width: 20px; height: 20px;
    flex: none;
    margin-top: 1px;
    border: 1.5px solid #B7C2CF;
    border-radius: 5px;
    background: var(--panel);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background 0.12s ease, border-color 0.12s ease;
}

.op-box svg {
    width: 12px; height: 12px;
    stroke: #fff;
    stroke-width: 2.6;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    opacity: 0;
    transform: scale(0.6);
    transition: opacity 0.12s ease, transform 0.12s ease;
}

.op-row.selected .op-box {
    background: var(--accent);
    border-color: var(--accent);
}

.op-row.selected .op-box svg { opacity: 1; transform: scale(1); }

.op-row .op-text {
    font-size: 13.5px;
    line-height: 1.5;
    color: var(--ink);
    padding-top: 1px;
}

.op-row.selected .op-text { font-weight: 600; }

/* -------- Buttons -------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 40px;
    padding: 0 18px;
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    transition: background 0.14s ease, border-color 0.14s ease, color 0.14s ease, box-shadow 0.14s ease;
    white-space: nowrap;
}

.btn svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-deep); }
.btn-primary:active { background: #1A3F85; }

.btn-secondary {
    background: var(--panel);
    color: var(--ink);
    border-color: var(--line-strong);
}
.btn-secondary:hover { background: #F6F8FA; border-color: #AAB6C4; }

.btn-secondary.active {
    background: var(--accent-soft);
    border-color: var(--accent-line);
    color: var(--accent-deep);
}

.btn-ghost {
    background: var(--panel);
    color: var(--ink);
    border-color: var(--line-strong);
}
.btn-ghost:hover { background: #F6F8FA; }

.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: #A8322C; }

.btn-block { width: 100%; height: 44px; }

.btn-small { height: 36px; padding: 0 14px; font-size: 12.5px; }

.op-empty, .empty-hint {
    font-size: 12.5px;
    color: var(--ink-3);
    margin: 6px 0;
}

.link-btn {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--accent);
    background: none;
    padding: 2px 0;
}
.link-btn:hover { color: var(--accent-deep); text-decoration: underline; }

.link-btn-center {
    display: block;
    width: 100%;
    text-align: center;
    color: var(--ink-3);
    font-weight: 500;
    padding: 6px 0;
}
.link-btn-center:hover { color: var(--ink); text-decoration: none; }

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px; height: 34px;
    border-radius: var(--radius-sm);
    color: var(--ink-2);
    transition: background 0.12s ease, color 0.12s ease;
}
.icon-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.icon-btn:hover { background: #EEF1F5; color: var(--ink); }
.icon-btn.danger:hover { background: var(--danger-soft); color: var(--danger); }

.builder-actions { margin-top: 24px; border-top: 1px solid var(--line); padding-top: 16px; }

/* ==========================================================================
   Preview workspace
   ========================================================================== */

.preview { min-width: 0; }

.workspace {
    background: var(--workspace);
    border: 1px solid #E0E5EB;
    border-radius: var(--radius);
    box-shadow: var(--shadow-panel);
    overflow: hidden;
}

/* -------- Workspace toolbar -------- */

.ws-toolbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 13px 18px;
    border-bottom: 1px solid #DFE4EA;
}

.ws-toolbar-title {
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--ink-2);
}

.live-chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 11.5px;
    font-weight: 600;
    color: #1F7A49;
    background: rgba(255, 255, 255, 0.75);
    border: 1px solid #D4E9DD;
    border-radius: 999px;
    padding: 3px 10px;
}

.live-dot { width: 7px; height: 7px; box-shadow: 0 0 0 2.5px rgba(47, 168, 107, 0.14); }

.ws-toolbar-spacer { flex: 1; }

.edit-status { font-size: 12px; color: var(--amber); font-weight: 500; }

.ws-actions { display: flex; gap: 9px; }
.ws-actions .btn { height: 35px; padding: 0 14px; font-size: 12.5px; }

.ws-banner {
    margin: 12px 18px 0;
    padding: 8px 12px;
    font-size: 12.5px;
    color: var(--amber);
    background: var(--amber-soft);
    border: 1px solid #F0DFBC;
    border-radius: var(--radius-sm);
    text-align: center;
}

/* ==========================================================================
   A4 letter document
   ========================================================================== */

.paper-wrap {
    padding: 34px 30px 42px;
    display: flex;
    justify-content: center;
}

.letter {
    width: min(700px, 100%);
    aspect-ratio: 210 / 297;
    background: #fff;
    color: #24303C;
    font-family: var(--font-doc);
    border-radius: 3px;
    box-shadow: var(--shadow-paper);
    padding: clamp(44px, 6.5vw, 58px) clamp(46px, 6.5vw, 58px);
    display: flex;
    flex-direction: column;
}

/* letter head: logo + clinic identity */
.letter-head {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-bottom: 22px;
    border-bottom: 2px solid var(--ink);
}

.letter-logo {
    width: 46px; height: 46px;
    flex: none;
    border-radius: 50%;
    background: #E9EEF5;
    border: 1px solid #D5DDE7;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: #3D4E60;
}
.letter-logo img { width: 100%; height: 100%; object-fit: contain; display: block; }

.letter-clinic-name {
    font-size: 17px;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: #1B2732;
}

.letter-clinic-line {
    font-size: 12.5px;
    color: #5B6673;
    margin-top: 2px;
}

.letter-title {
    margin: 34px 0 8px;
    text-align: center;
    font-size: 15.5px;
    font-weight: 700;
    letter-spacing: 0.16em;
    color: #1B2732;
}

.letter-meta {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
    margin: 22px 0 0;
}

.meta-label {
    display: block;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #7C8794;
    margin-bottom: 3px;
}

.meta-value {
    font-size: 14.5px;
    font-weight: 600;
    color: #1B2732;
}

.letter-rule {
    border: none;
    border-top: 1px solid #DEE3E9;
    margin: 26px 0 24px;
}

.letter-lead {
    margin: 0 0 20px;
    font-size: 14px;
    line-height: 1.6;
    color: #2C3845;
}

.letter-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 11px;
}

.letter-list li {
    display: flex;
    gap: 12px;
    font-size: 14px;
    line-height: 1.55;
    color: #293545;
}

.letter-list li::before {
    content: "";
    width: 5px; height: 5px;
    border-radius: 50%;
    background: var(--accent);
    flex: none;
    margin-top: 8px;
}

.letter-list .letter-empty {
    color: #98A2AF;
    font-style: italic;
    font-size: 13.5px;
}
.letter-list .letter-empty::before { display: none; }

.letter-custom {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid #E2E7EC;
}

.letter-custom-title {
    margin: 0 0 8px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #7C8794;
}

.letter-custom-text {
    margin: 0;
    font-size: 13.5px;
    line-height: 1.6;
    color: #293545;
    white-space: pre-wrap;
}

.letter-foot {
    margin-top: auto;
    padding-top: 22px;
    border-top: 1px solid #E2E7EC;
    font-size: 12.5px;
    color: #4E5A66;
}

/* ---------- Edit-letter mode ---------- */

@media screen {
    .letter.editing { outline: 1px dashed #BCC8D6; outline-offset: 6px; }

    .letter .editable {
        border-radius: 3px;
        padding: 0 2px;
        margin: 0 -2px;
        transition: background 0.12s ease;
        cursor: text;
    }
    .letter .editable:hover { background: rgba(43, 95, 199, 0.06); }
    .letter .editable:focus {
        outline: 1.5px dashed var(--accent);
        outline-offset: 2px;
        background: rgba(43, 95, 199, 0.06);
    }
}

/* ==========================================================================
   Bottom utility bar
   ========================================================================== */

.utilbar {
    margin-top: 40px;
    background: var(--panel);
    border-top: 1px solid var(--line);
}

.utilbar-inner {
    max-width: 1320px;
    margin: 0 auto;
    padding: 11px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.util-manage {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--accent-deep);
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    transition: background 0.12s ease;
}
.util-manage svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.util-manage:hover { background: var(--accent-soft); }

.util-reset {
    font-size: 12.5px;
    font-weight: 500;
    color: var(--ink-3);
    padding: 7px 10px;
    border-radius: var(--radius-sm);
    transition: color 0.12s ease, background 0.12s ease;
}
.util-reset:hover { color: var(--danger); background: var(--danger-soft); }

/* ==========================================================================
   Drawer
   ========================================================================== */

.drawer-layer {
    position: fixed;
    inset: 0;
    z-index: 60;
    visibility: hidden;
    pointer-events: none;
}

.drawer-layer.open { visibility: visible; pointer-events: auto; }

.drawer-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(22, 30, 42, 0.42);
    opacity: 0;
    transition: opacity 0.22s ease;
}

.drawer-layer.open .drawer-backdrop { opacity: 1; }

.drawer {
    position: absolute;
    top: 0; right: 0; bottom: 0;
    width: 480px;
    max-width: 100vw;
    background: var(--panel);
    display: flex;
    flex-direction: column;
    box-shadow: -18px 0 44px -16px rgba(15, 23, 35, 0.35);
    transform: translateX(102%);
    transition: transform 0.26s cubic-bezier(0.32, 0.72, 0.24, 1);
}

.drawer-layer.open .drawer { transform: translateX(0); }

.drawer-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    padding: 18px 22px 16px;
    border-bottom: 1px solid var(--line);
    background: var(--panel);
}

.drawer-title { margin: 0; font-size: 16.5px; font-weight: 700; letter-spacing: -0.01em; }

.drawer-subtitle { margin: 3px 0 0; font-size: 12.5px; color: var(--ink-2); }

.drawer-body {
    flex: 1;
    overflow-y: auto;
    padding: 18px 22px 26px;
    overscroll-behavior: contain;
}

/* drawer sections */

.d-section { margin-bottom: 26px; }
.d-section:last-child { margin-bottom: 0; }

.d-section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.d-section-title {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-2);
}

.d-section-title em { font-style: normal; color: var(--ink-3); }

.add-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--accent);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--accent-line);
    background: var(--accent-soft);
    transition: background 0.12s ease;
}
.add-btn svg { width: 13px; height: 13px; stroke: currentColor; stroke-width: 2.4; }
.add-btn:hover { background: #E2EAF9; }

/* procedure rows */

.proc-list { display: flex; flex-direction: column; gap: 8px; }

.proc-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 13px 15px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    transition: border-color 0.12s ease, box-shadow 0.12s ease;
}

.proc-row:hover { border-color: var(--line-strong); box-shadow: 0 1px 3px rgba(20, 30, 45, 0.05); }

.proc-info { min-width: 0; }

.proc-name {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.proc-meta { font-size: 11.5px; color: var(--ink-3); margin-top: 2px; }

.proc-actions { display: flex; gap: 6px; flex: none; }

.mini-btn {
    font-size: 12px;
    font-weight: 600;
    padding: 6px 11px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--line-strong);
    background: var(--panel);
    color: var(--ink);
    transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}
.mini-btn:hover { background: #F2F5F9; }

.mini-btn.danger { color: var(--danger); border-color: #E9C7C5; background: transparent; }
.mini-btn.danger:hover { background: var(--danger-soft); border-color: #E5B2B0; }

/* inline add-procedure form */

.inline-form {
    border: 1px solid var(--accent-line);
    border-radius: 8px;
    background: var(--accent-soft);
    padding: 12px;
    margin-bottom: 10px;
}

.inline-form .input { background: var(--panel); border-color: var(--line-strong); }
.inline-form .input:focus { border-color: var(--accent); }

.form-error {
    font-size: 12px;
    color: var(--danger);
    margin-top: 7px;
    font-weight: 500;
}

.form-row { display: flex; gap: 9px; }
.form-row .input { flex: 1; }
.form-row .btn { flex: none; }

/* clinic settings form */

.clinic-form .field { margin-bottom: 16px; }
.clinic-form .label { font-size: 12px; margin-bottom: 6px; }

.logo-row {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-preview {
    width: 52px; height: 52px;
    border-radius: 8px;
    background: #EEF2F7;
    border: 1px solid var(--line);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    font-size: 15px;
    font-weight: 700;
    color: #3D4E60;
}
.logo-preview img { width: 100%; height: 100%; object-fit: contain; }

.logo-hint { font-size: 11.5px; color: var(--ink-3); margin-top: 6px; }

/* editor view */

.back-row { margin-bottom: 14px; }

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--ink-2);
    padding: 5px 8px;
    border-radius: var(--radius-sm);
    transition: background 0.12s ease, color 0.12s ease;
}
.back-btn svg { width: 14px; height: 14px; stroke: currentColor; stroke-width: 2; }
.back-btn:hover { background: #EEF2F5; color: var(--ink); }

.instr-list { display: flex; flex-direction: column; gap: 9px; }

.instr-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
}

.instr-row .input { flex: 1; }

.instr-default {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 11px;
    flex: none;
    font-size: 11.5px;
    font-weight: 600;
    color: var(--ink-2);
    cursor: pointer;
    user-select: none;
}

.instr-default input {
    width: 15px; height: 15px;
    accent-color: var(--accent);
    cursor: pointer;
    margin: 0;
}

.instr-row .icon-btn { margin-top: 4px; }

.editor-save-row {
    display: flex;
    justify-content: flex-end;
    gap: 9px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
}

/* ==========================================================================
   Dialog
   ========================================================================== */

.dialog-layer {
    position: fixed;
    inset: 0;
    z-index: 80;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    visibility: hidden;
    pointer-events: none;
}

.dialog-layer.open { visibility: visible; pointer-events: auto; }

.dialog-layer > .dialog-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(22, 30, 42, 0.45);
    opacity: 0;
    transition: opacity 0.18s ease;
}

.dialog-layer.open > .dialog-backdrop { opacity: 1; }

.dialog {
    position: relative;
    width: min(400px, 100%);
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 12px;
    box-shadow: 0 24px 60px -18px rgba(15, 23, 35, 0.4);
    padding: 22px;
    opacity: 0;
    transform: translateY(6px) scale(0.98);
    transition: opacity 0.16s ease, transform 0.16s ease;
}

.dialog-layer.open .dialog { opacity: 1; transform: none; }

.dialog-title { margin: 0 0 7px; font-size: 15.5px; font-weight: 700; }

.dialog-desc { margin: 0; font-size: 13px; color: var(--ink-2); line-height: 1.55; }

.dialog-actions {
    display: flex;
    justify-content: flex-end;
    gap: 9px;
    margin-top: 20px;
}

/* ==========================================================================
   Toast
   ========================================================================== */

.toast {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 90;
    max-width: 340px;
    background: #202B38;
    color: #F4F6F8;
    font-size: 12.5px;
    font-weight: 500;
    padding: 11px 16px;
    border-radius: 8px;
    box-shadow: 0 10px 28px -8px rgba(15, 23, 35, 0.45);
    opacity: 0;
    transform: translateY(8px);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.toast.show { opacity: 1; transform: none; }

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

@media (max-width: 1100px) {
    .layout {
        grid-template-columns: minmax(0, 42fr) minmax(0, 58fr);
        gap: 18px;
        padding-left: 20px;
        padding-right: 20px;
    }
    .appbar-inner, .utilbar-inner { padding-left: 20px; padding-right: 20px; }
}

@media (max-width: 880px) {
    .layout { grid-template-columns: minmax(0, 1fr); }  /* stack: builder, then preview */
    .paper-wrap { padding: 24px 18px 30px; }
}

@media (max-width: 600px) {
    .appbar-inner { flex-direction: column; align-items: flex-start; gap: 10px; padding: 14px 18px; }
    .utilbar-inner { flex-direction: column; align-items: flex-start; gap: 8px; padding: 12px 18px; }
    .letter-meta { grid-template-columns: 1fr; gap: 12px; }
    .ws-toolbar { flex-wrap: wrap; gap: 10px; }
    .ws-toolbar-spacer { display: none; }
    .ws-toolbar-title { margin-right: auto; }
}

/* ==========================================================================
   Print — only the A4 document
   ========================================================================== */

@page {
    size: A4;
    margin: 0;
}

@media print {
    html, body {
        margin: 0 !important;
        padding: 0 !important;
        background: #fff !important;
    }

    .no-print { display: none !important; }

    .app { display: block; min-height: 0; }
    .layout, .preview, .workspace {
        display: block !important;
        width: 100% !important;
        max-width: none !important;
        margin: 0 !important;
        padding: 0 !important;
        gap: 0 !important;
        background: #fff !important;
        border: none !important;
        border-radius: 0 !important;
        box-shadow: none !important;
    }

    .paper-wrap {
        width: 100% !important;
        margin: 0 !important;
        padding: 0 !important;
        display: block !important;
    }

    .letter {
        width: 210mm;
        aspect-ratio: auto;
        min-height: 297mm;
        margin: 0 !important;
        padding: 21mm 22mm !important;
        box-shadow: none !important;
        border-radius: 0 !important;
        border: none !important;
        outline: none !important;
    }

    .letter .editable {
        outline: none !important;
        background: transparent !important;
        border: none !important;
    }

    /* keep letters' colors pure black-based */
    .letter, .letter * { color-adjust: exact; -webkit-print-color-adjust: exact; }
}