* {
    box-sizing: border-box;
}

:root {
    --bg: radial-gradient(circle at top left, #223a7a 0%, #1b1f3b 45%, #0f1224 100%);
    --text: #e5e7eb;
    --panel: rgba(15, 23, 42, 0.85);
    --panel-strong: rgba(15, 23, 42, 0.95);
    --border: rgba(148, 163, 184, 0.2);
    --accent: #38bdf8;
    --accent-strong: #0ea5e9;
    --button-text: #0b1f3a;
    --label: #cbd5f5;
    --input-bg: rgba(30, 41, 59, 0.7);
    --pill-bg: rgba(129, 140, 248, 0.2);
    --pill-text: #c7d2fe;
}

body {
    margin: 0;
    font-family: "Courier New", Courier, "Lucida Console", Monaco, monospace;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

body.light {
    --bg: radial-gradient(circle at top left, #eef2ff 0%, #f8fafc 50%, #e2e8f0 100%);
    --text: #0f172a;
    --panel: rgba(255, 255, 255, 0.9);
    --panel-strong: rgba(255, 255, 255, 0.95);
    --border: rgba(148, 163, 184, 0.35);
    --accent: #2563eb;
    --accent-strong: #1d4ed8;
    --button-text: #ffffff;
    --label: #475569;
    --input-bg: rgba(248, 250, 252, 0.9);
    --pill-bg: rgba(191, 219, 254, 0.6);
    --pill-text: #1e3a8a;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: var(--panel);
    color: var(--text);
    border-bottom: 1px solid var(--border);
}

.brand {
    font-weight: 700;
    letter-spacing: 0.5px;
}

.nav {
    display: flex;
    gap: 16px;
    align-items: center;
}

.nav a {
    color: var(--text);
    text-decoration: none;
    font-size: 14px;
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    color: var(--text);
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
}

.theme-toggle:hover {
    background: rgba(148, 163, 184, 0.2);
}

.nav-text {
    font-size: 14px;
    opacity: 0.9;
}

.container {
    max-width: 1200px;
    margin: 24px auto;
    padding: 0 20px 60px;
}

.card {
    background: var(--panel);
    border-radius: 12px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.35);
    padding: 24px;
    margin-bottom: 24px;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(4px);
    z-index: 2000;
}

.modal-overlay.is-open {
    display: flex;
}

.modal {
    width: min(560px, 100%);
    background: var(--panel-strong);
    border-radius: 14px;
    border: 1px solid var(--border);
    box-shadow: 0 20px 60px rgba(15, 23, 42, 0.45);
    padding: 20px;
}

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

.modal-header h2 {
    margin: 0;
    font-size: 18px;
}

.modal-close {
    width: 32px;
    height: 32px;
    padding: 0;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: none;
    color: var(--text);
    font-size: 18px;
    line-height: 1;
}

.modal-close:hover {
    background: rgba(148, 163, 184, 0.2);
}

.form-hint {
    margin-top: 12px;
    color: var(--label);
    font-size: 14px;
    opacity: 0.8;
}

body.modal-open {
    overflow: hidden;
}

.card h2 {
    margin-top: 0;
    margin-bottom: 16px;
    font-size: 20px;
}

.grid {
    display: grid;
    gap: 16px;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

label {
    display: block;
    font-size: 13px;
    margin-bottom: 6px;
    color: var(--label);
}

input,
select {
    width: 100%;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid var(--border);
    font-size: 14px;
    background: var(--input-bg);
    color: var(--text);
}

button {
    padding: 10px 14px;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: var(--button-text);
    font-size: 14px;
    cursor: pointer;
}

button:hover {
    background: var(--accent-strong);
}

.link-button {
    background: none;
    color: var(--text);
    border: none;
    padding: 0;
    cursor: pointer;
    font-size: 14px;
}

.inline-form {
    display: inline;
}

.notice {
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 16px;
}

.notice.success {
    background: rgba(16, 185, 129, 0.2);
    color: #6ee7b7;
}

.notice.error {
    background: rgba(239, 68, 68, 0.2);
    color: #fecaca;
}

.file-list {
    width: 100%;
    border-collapse: collapse;
}

.file-list th,
.file-list td {
    text-align: left;
    padding: 10px 8px;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}

.pill {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--pill-bg);
    color: var(--pill-text);
    font-size: 12px;
}

.desktop {
    position: relative;
    min-height: 70vh;
    border-radius: 18px;
    padding: 24px;
    background: linear-gradient(140deg, rgba(30, 64, 175, 0.2), rgba(15, 23, 42, 0.45));
    border: 1px solid var(--border);
    box-shadow: inset 0 0 40px rgba(15, 23, 42, 0.6);
}

.desktop-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 18px;
}

.dashboard-panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px;
    height: fit-content;
}

.dashboard-panel h3 {
    margin: 0 0 12px;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.desktop-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    color: var(--text);
}

.menu-bar {
    display: flex;
    gap: 8px;
}

.menu-bar button {
    padding: 6px 10px;
    font-size: 12px;
    border-radius: 999px;
}

.breadcrumbs {
    display: flex;
    gap: 8px;
    align-items: center;
    font-size: 12px;
}

.breadcrumbs a {
    color: var(--text);
    text-decoration: none;
}

.breadcrumbs span {
    opacity: 0.7;
}

.desktop-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 18px;
}

.desktop-grid.list-view {
    grid-template-columns: 1fr;
}

.desktop-grid.list-view .desktop-item {
    display: grid;
    grid-template-columns: 40px 1fr 120px;
    gap: 12px;
    align-items: center;
    text-align: left;
    padding: 10px 12px;
}

.desktop-grid.list-view .desktop-item .label {
    margin-top: 0;
}

.desktop-grid.list-view .desktop-item .meta {
    font-size: 11px;
    opacity: 0.7;
    text-align: right;
}

.desktop-grid.tree-view {
    grid-template-columns: 1fr;
}

.desktop-grid.tree-view .desktop-item {
    display: grid;
    grid-template-columns: 32px 1fr;
    align-items: center;
    text-align: left;
    padding: 6px 10px;
}

.desktop-grid.tree-view .desktop-item .icon {
    font-size: 18px;
}

.desktop-grid.tree-view .desktop-item.file {
    padding-left: 28px;
}

.desktop-item {
    text-align: center;
    padding: 12px 8px;
    border-radius: 12px;
    border: 1px solid transparent;
    color: var(--text);
    user-select: none;
}

.desktop-item .meta {
    display: none;
}

.desktop-grid.list-view .desktop-item .meta {
    display: block;
}

.desktop-grid.tree-view .desktop-item .meta {
    display: none;
}
.desktop-item.selected {
    border-color: var(--accent);
    background: rgba(59, 130, 246, 0.18);
}

.desktop-item:hover {
    border-color: var(--border);
    background: rgba(59, 130, 246, 0.08);
}

.desktop-item .icon {
    font-size: 26px;
}

.desktop-item .label {
    margin-top: 8px;
    font-size: 12px;
    word-break: break-word;
}

.desktop-empty {
    padding: 24px;
    text-align: center;
    color: var(--label);
    border: 1px dashed var(--border);
    border-radius: 12px;
    background: var(--panel);
}

.desktop-icons {
    display: flex;
    gap: 18px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.desktop-icon {
    width: 120px;
    text-align: center;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px 10px;
    color: var(--text);
}

.desktop-icon .label {
    display: block;
    margin-top: 10px;
    font-size: 12px;
    letter-spacing: 0.6px;
}

.window {
    position: absolute;
    width: 520px;
    background: var(--panel-strong);
    border-radius: 14px;
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 20px;
}

.window-titlebar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 10px 16px;
    background: rgba(30, 64, 175, 0.45);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: move;
}

.window-body {
    padding: 18px;
}

.window-controls {
    display: flex;
    gap: 8px;
}

.window-control {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(248, 250, 252, 0.6);
}

.window-hidden {
    display: none;
}

.dropzone {
    border: 2px dashed var(--border);
    border-radius: 10px;
    padding: 18px;
    text-align: center;
    color: var(--label);
    margin-bottom: 16px;
    background: var(--panel);
}

.dropzone.active {
    border-color: var(--accent);
    color: #7dd3fc;
    background: rgba(14, 165, 233, 0.15);
}

.context-menu {
    position: absolute;
    z-index: 9999;
    background: var(--panel-strong);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 8px;
    min-width: 180px;
    display: none;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.6);
}

.context-menu button,
.context-menu a {
    display: block;
    width: 100%;
    text-align: left;
    padding: 8px 10px;
    background: none;
    border: none;
    color: var(--text);
    font-size: 13px;
    cursor: pointer;
    text-decoration: none;
}

.context-menu button:hover,
.context-menu a:hover {
    background: rgba(59, 130, 246, 0.2);
}

.taskbar {
    margin-top: 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-radius: 12px;
    background: var(--panel);
    border: 1px solid var(--border);
}

.taskbar .task {
    font-size: 12px;
    color: #93c5fd;
}

.panel-player {
    margin-top: 14px;
    padding-top: 10px;
    border-top: 1px solid var(--border);
}

.panel-player audio,
.panel-player video {
    width: 100%;
    border-radius: 8px;
    background: rgba(15, 23, 42, 0.5);
}

@media (max-width: 640px) {
    .top-bar {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }

    .window {
        position: static;
        width: auto;
    }

    .desktop-shell {
        grid-template-columns: 1fr;
    }
}