/* 3.3 速览 and 3.4 在桌面显示文件夹 (agent "peek"). Every class is prefixed pk-. */

/* Fluent fences draw a blurred crop of the wallpaper (not whatever is behind the window), so a
   fence floating over an app window during Peek looks exactly as it does on the desktop.
   .pk-glass swaps the backdrop blur for that crop; the rim highlights move onto the crop. */
.fence.pk-glass {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
}

.pk-crop {
    inset: 0;
    border-radius: inherit;
    overflow: hidden;
}

/* The .wall picture (38% 30% / 150% auto on 800x450 = 1200x675 at -152,-67.5), drawn 40 px
   larger on every side so the blur has no soft edge. */
.pk-crop > div {
    left: -40px;
    top: -40px;
    width: 880px;
    height: 530px;
    background: url(../assets/showcase-wallpaper.jpg) -112px -27.5px / 1200px 675px no-repeat;
    filter: blur(16px) saturate(1.5);
}

.pk-crop::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(180deg, rgba(255, 255, 255, .44), rgba(246, 243, 251, .34));
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .62), inset 0 1px 0 rgba(255, 255, 255, .9);
}

/* Peek dimmer: one black layered window over the work area at 30 % (taskbar stays clear). */
.pk-dim {
    left: 0;
    top: 0;
    width: 800px;
    height: 422px;
    background: #000;
    opacity: 0;
    z-index: 2;
}

/* ---------- app windows (Windows 11 style) ---------- */

.pk-win {
    left: 0;
    top: 0;
    display: flex;
    flex-direction: column;
    border-radius: 8px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, .13), 0 2px 6px rgba(20, 16, 40, .1), 0 18px 44px rgba(20, 16, 40, .26);
    transform-origin: 50% 50%;
    color: #1f2430;
    font-size: 12px;
    z-index: 2;
}

.pk-win * { position: relative }
.pk-win svg { display: block }

.pk-caps {
    margin-left: auto;
    align-self: stretch;
    display: flex;
    color: #2b2f3a;
}

.pk-caps i {
    width: 40px;
    display: grid;
    place-items: center;
}

.pk-caps svg { width: 10px; height: 10px }

/* browser */

.pk-tabs {
    flex: none;
    height: 36px;
    display: flex;
    align-items: flex-end;
    padding-left: 8px;
    background: #e9eaf0;
}

.pk-tab {
    width: 218px;
    height: 29px;
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 0 9px 0 11px;
    border-radius: 8px 8px 0 0;
    background: #fff;
    font-size: 11.5px;
    white-space: nowrap;
}

.pk-tab img { width: 14px; height: 14px; flex: none }
.pk-tab span { flex: 1; overflow: hidden; text-overflow: ellipsis }
.pk-tab svg { width: 8px; height: 8px; color: #5b6070 }

.pk-plus {
    width: 30px;
    height: 29px;
    display: grid;
    place-items: center;
    color: #4b5060;
}

.pk-plus svg { width: 10px; height: 10px }
.pk-tabs .pk-caps { margin-bottom: 0; height: 36px }

.pk-bar {
    flex: none;
    height: 38px;
    display: flex;
    align-items: center;
    gap: 2px;
    padding: 0 10px;
    background: #fff;
    border-bottom: 1px solid #eceef2;
}

.pk-nav {
    width: 26px;
    height: 26px;
    display: grid;
    place-items: center;
    color: #4b5060;
}

.pk-nav.off { color: #b4b8c3 }
.pk-nav svg { width: 13px; height: 13px }

.pk-addr {
    flex: 1;
    height: 26px;
    margin: 0 8px 0 8px;
    padding: 0 12px;
    display: flex;
    align-items: center;
    gap: 7px;
    border-radius: 13px;
    background: #f0f1f5;
    color: #3c4150;
    font-size: 11.5px;
}

.pk-addr svg { width: 11px; height: 11px; color: #5b6070 }
.pk-addr em { font-style: normal; color: #8a8f9c }

.pk-page {
    flex: 1;
    display: flex;
    min-height: 0;
}

.pk-side {
    flex: none;
    width: 150px;
    padding: 20px 16px;
    background: #f7f8fa;
    border-right: 1px solid #eef0f3;
}

.pk-side b {
    display: block;
    margin-bottom: 12px;
    font-size: 11.5px;
    font-weight: 650;
    color: #3c4150;
}

.pk-main {
    flex: 1;
    padding: 22px 30px;
}

.pk-main h1 {
    margin: 0;
    font: 650 20px/1.2 "Segoe UI Variable Display", "Segoe UI", "Microsoft YaHei UI", sans-serif;
    letter-spacing: -.2px;
}

.pk-meta {
    margin: 6px 0 16px;
    color: #7b8090;
    font-size: 11px;
}

.pk-cards {
    display: flex;
    gap: 12px;
    margin-bottom: 18px;
}

.pk-card {
    flex: 1;
    height: 74px;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 600;
}

.pk-card small { display: block; margin-top: 6px; font-size: 18px; font-weight: 650 }
.pk-card.c1 { background: #eef1fd; color: #3a4fb5 }
.pk-card.c2 { background: #fdf0e8; color: #a3532a }
.pk-card.c3 { background: #eaf6ef; color: #2b7a4b }

/* placeholder text lines */
.pk-ln {
    display: block;
    height: 7px;
    margin-bottom: 10px;
    border-radius: 4px;
    background: #e4e6ec;
}

.pk-side .pk-ln { height: 6px; margin-bottom: 12px; background: #e3e5eb }
.pk-ln.h { height: 9px; margin: 16px 0 12px; background: #cfd3dc }

/* document editor */

.pk-titlebar {
    flex: none;
    height: 32px;
    display: flex;
    align-items: center;
    gap: 8px;
    padding-left: 12px;
    background: #eef0f5;
    font-size: 11.5px;
}

.pk-titlebar img { width: 14px; height: 14px }

.pk-ribbon {
    flex: none;
    height: 34px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 12px;
    background: #f8f9fb;
    border-bottom: 1px solid #e8eaef;
}

.pk-ribbon i {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    background: #e3e6ed;
}

.pk-ribbon i.w { width: 64px; background: #fff; box-shadow: inset 0 0 0 1px #dfe2e9 }
.pk-ribbon i.s { width: 1px; height: 18px; margin: 0 4px; border-radius: 0; background: #dfe2e9 }

.pk-canvas {
    flex: 1;
    display: flex;
    justify-content: center;
    padding-top: 14px;
    background: #e8eaef;
    overflow: hidden;
}

.pk-paper {
    width: 300px;
    padding: 26px 30px;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .12);
}

.pk-paper h2 {
    margin: 0 0 14px;
    font-size: 15px;
    font-weight: 650;
}

.pk-paper .pk-ln { height: 6px; margin-bottom: 9px }

/* ---------- folder portal title decorations ---------- */

/* Up button (Segoe Fluent E74A in a 28x28 box at x 6): clear at rest, SubtleFill on hover,
   the lighter pressed fill and a tertiary glyph while held. */
.pk-up {
    left: 6px;
    top: 2px;
    width: 28px;
    height: 28px;
    border-radius: 4px;
    display: grid;
    place-items: center;
    color: rgba(27, 33, 51, .72);
}

.pk-up.pressed { color: rgba(27, 33, 51, .45) }
.pk-up svg { position: relative; width: 12px; height: 12px }

.pk-up i {
    inset: 0;
    border-radius: 4px;
    background: rgba(255, 255, 255, .5);
    opacity: 0;
}

.pk-up.pressed i { background: rgba(255, 255, 255, .3) }

/* Folder glyph (E8B7) before the title. */
.pk-fold {
    top: 9px;
    width: 14px;
    height: 14px;
    color: rgba(27, 33, 51, .72);
}

.pk-fold svg { position: static; display: block; width: 14px; height: 14px }

/* Selected item of a fence that is not the active window (Explorer's grey selection). */
.ico.pk-dull {
    background: rgba(255, 255, 255, .32);
    box-shadow: inset 0 0 0 1px rgba(98, 104, 122, .26);
}

/* Windows 11 tooltip */
.pk-tip {
    left: 0;
    top: 0;
    padding: 3px 8px 4px;
    border-radius: 4px;
    background: #fbfbfc;
    box-shadow: 0 0 0 1px rgba(0, 0, 0, .1), 0 4px 10px rgba(0, 0, 0, .13);
    font-size: 11.5px;
    line-height: 16px;
    white-space: nowrap;
    opacity: 0;
    z-index: 6;
}