:root {
    --bg: #0d1020;
    --bg-elev: #151a31;
    --bg-elev-2: #1c2240;
    --border: #262d4d;
    --text: #e9ecf7;
    --text-dim: #98a0c0;
    --primary: #5b7cff;
    --primary-hover: #6f8bff;
    --danger: #ff5b6e;
    --success: #38d39f;
    --radius: 12px;
    --shadow: 0 18px 50px rgba(0, 0, 0, .45);
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    height: 100%;
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

button { font-family: inherit; cursor: pointer; }

/* ---------- Кнопки ---------- */
.btn {
    border: 1px solid transparent;
    border-radius: 10px;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 600;
    transition: background .15s, border-color .15s, transform .05s;
    color: var(--text);
    background: transparent;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-ghost { background: var(--bg-elev-2); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--primary); }
.btn-text { background: none; color: var(--text-dim); padding: 6px 8px; }
.btn-text:hover { color: var(--text); }
.btn-block { width: 100%; display: block; }
.btn-danger { color: var(--danger); }

/* ---------- Экран входа ---------- */
.login-screen {
    display: grid;
    place-items: center;
    min-height: 100vh;
    background: radial-gradient(1200px 600px at 50% -10%, #1d2547, var(--bg));
    padding: 20px;
}
.login-card {
    width: 100%;
    max-width: 380px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 18px;
    padding: 36px 32px;
    box-shadow: var(--shadow);
    text-align: center;
}
.login-logo { font-size: 44px; }
.login-card h1 { font-size: 22px; margin: 8px 0 2px; }
.login-sub { color: var(--text-dim); margin: 0 0 24px; font-size: 14px; }
.login-card label { display: block; text-align: left; margin-bottom: 14px; }
.login-card label span { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 6px; }
.login-card input {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 15px;
}
.login-card input:focus { outline: none; border-color: var(--primary); }
.login-card .btn { margin-top: 6px; }
.form-error { color: var(--danger); font-size: 13px; min-height: 18px; margin: 10px 0 0; }

/* ---------- Каркас ---------- */
.workspace { display: grid; grid-template-columns: 280px 1fr; height: 100vh; }

.sidebar {
    background: var(--bg-elev);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    padding: 20px 16px;
    gap: 14px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; padding: 0 6px; }
.brand-icon { font-size: 22px; }

.folder-tree { flex: 1; overflow-y: auto; margin-top: 4px; }
.folder-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 8px;
    color: var(--text-dim);
    font-size: 14px;
    cursor: pointer;
    user-select: none;
}
.folder-item:hover { background: var(--bg-elev-2); color: var(--text); }
.folder-item.active { background: var(--primary); color: #fff; }
.folder-item .twisty { width: 14px; text-align: center; opacity: .7; }
.folder-item .folder-actions { margin-left: auto; display: none; gap: 6px; }
.folder-item:hover .folder-actions { display: flex; }
.folder-actions button { background: none; border: none; color: inherit; opacity: .7; font-size: 13px; padding: 0 2px; }
.folder-actions button:hover { opacity: 1; }

.admin-section { border-top: 1px solid var(--border); padding-top: 12px; display: flex; flex-direction: column; gap: 8px; }
.admin-section-title { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--text-dim); padding: 0 6px 2px; }

.sidebar-footer { border-top: 1px solid var(--border); padding-top: 12px; display: flex; align-items: center; justify-content: space-between; }
.user-chip { display: flex; align-items: center; gap: 10px; }
.user-avatar { width: 32px; height: 32px; border-radius: 50%; background: var(--primary); color: #fff; display: grid; place-items: center; font-weight: 700; font-size: 14px; }
.user-meta { display: flex; flex-direction: column; line-height: 1.2; }
.user-name { font-size: 14px; }
.user-role { font-size: 11px; color: var(--text-dim); }

/* ---------- Модалки watermark / users ---------- */
.modal-wide { max-width: 720px; }
.modal-hint { color: var(--text-dim); font-size: 13px; margin: 0 0 16px; }
.field-hint { color: var(--text-dim); font-size: 12px; margin: 4px 0 0; }
.modal-body input[type=range] { width: 100%; accent-color: var(--primary); }

.wm-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; }
#wm-texts { display: flex; flex-direction: column; gap: 8px; }
#wm-texts input {
    width: 100%; padding: 10px 12px; background: var(--bg); border: 1px solid var(--border);
    border-radius: 10px; color: var(--text); font-size: 14px; font-family: inherit;
}
#wm-texts input:focus { outline: none; border-color: var(--primary); }
.wm-preview { display: flex; flex-direction: column; }
.wm-preview img { width: 100%; border: 1px solid var(--border); border-radius: 10px; background: var(--bg); aspect-ratio: 640 / 420; object-fit: cover; }

.new-user-form { margin-bottom: 20px; }
.nu-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.new-user-form input, .new-user-form select {
    padding: 10px 12px; background: var(--bg); border: 1px solid var(--border);
    border-radius: 10px; color: var(--text); font-size: 14px; font-family: inherit;
}
.new-user-form input:focus, .new-user-form select:focus { outline: none; border-color: var(--primary); }

.users-list-wrap { border-top: 1px solid var(--border); padding-top: 8px; }
.users-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.users-table th { text-align: left; color: var(--text-dim); font-weight: 600; font-size: 12px; padding: 8px 10px; }
.users-table td { padding: 8px 10px; border-top: 1px solid var(--border); vertical-align: middle; }
.users-table select { padding: 6px 8px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; color: var(--text); font-size: 13px; }
.users-table .row-actions { display: flex; gap: 6px; justify-content: flex-end; }
.role-pill { font-size: 11px; padding: 2px 8px; border-radius: 999px; background: var(--bg-elev-2); color: var(--text-dim); }
.role-pill.admin { background: rgba(91,124,255,.2); color: var(--primary-hover); }

/* ---------- Контент ---------- */
.content { display: flex; flex-direction: column; overflow: hidden; }
.content-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 26px;
    border-bottom: 1px solid var(--border);
}
.breadcrumbs { font-size: 15px; color: var(--text-dim); display: flex; gap: 6px; flex-wrap: wrap; }
.breadcrumbs .crumb { cursor: pointer; }
.breadcrumbs .crumb:hover { color: var(--text); }
.breadcrumbs .crumb.current { color: var(--text); font-weight: 600; }
.content-actions { display: flex; gap: 10px; }

.dropzone {
    margin: 20px 26px 0;
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    transition: border-color .15s, background .15s;
}
.dropzone.dragover { border-color: var(--primary); background: rgba(91, 124, 255, .08); }
.dropzone-inner { padding: 26px; text-align: center; cursor: pointer; }
.dropzone-icon { font-size: 28px; color: var(--primary); }
.dropzone-title { margin: 8px 0 2px; font-weight: 600; }
.dropzone-hint { margin: 0; color: var(--text-dim); font-size: 13px; }

.upload-queue { margin: 14px 26px 0; display: flex; flex-direction: column; gap: 8px; }
.upload-item { background: var(--bg-elev); border: 1px solid var(--border); border-radius: 10px; padding: 10px 14px; }
.upload-item .up-head { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 6px; }
.upload-item .up-name { color: var(--text); max-width: 70%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.upload-item .up-status { color: var(--text-dim); }
.upload-item.done .up-status { color: var(--success); }
.upload-item.error .up-status { color: var(--danger); }
.progress { height: 6px; background: var(--bg); border-radius: 3px; overflow: hidden; }
.progress-bar { height: 100%; width: 0; background: var(--primary); transition: width .2s; }

.gallery {
    flex: 1;
    overflow-y: auto;
    padding: 20px 26px 40px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
    align-content: start;
}
.card {
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform .12s, border-color .12s;
    position: relative;
}
.card:hover { transform: translateY(-3px); border-color: var(--primary); }
.card .thumb { width: 100%; aspect-ratio: 1; object-fit: cover; display: block; background: var(--bg); cursor: zoom-in; }
.card .card-body { padding: 10px 12px; }
.card .card-name { font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card .card-meta { font-size: 11px; color: var(--text-dim); margin-top: 2px; }
.card .card-tools { position: absolute; top: 8px; right: 8px; display: flex; gap: 6px; opacity: 0; transition: opacity .12s; }
.card:hover .card-tools { opacity: 1; }
.card-tools button {
    width: 30px; height: 30px; border-radius: 8px; border: none;
    background: rgba(13, 16, 32, .8); color: #fff; backdrop-filter: blur(4px); font-size: 14px;
}
.card-tools button:hover { background: var(--primary); }
.card-tools .del:hover { background: var(--danger); }

.empty-state { text-align: center; color: var(--text-dim); padding: 60px; }

/* ---------- Лайтбокс ---------- */
.lightbox {
    position: fixed; inset: 0; background: rgba(8, 10, 22, .92);
    display: grid; place-items: center; z-index: 50; padding: 40px;
}
.lightbox img { max-width: 92vw; max-height: 88vh; border-radius: 10px; box-shadow: var(--shadow); }
.lightbox-close { position: absolute; top: 22px; right: 26px; background: none; border: none; color: #fff; font-size: 26px; }

/* ---------- Модалка ---------- */
.modal { position: fixed; inset: 0; background: rgba(8, 10, 22, .7); display: grid; place-items: center; z-index: 60; padding: 20px; }
.modal-card { background: var(--bg-elev); border: 1px solid var(--border); border-radius: 16px; width: 100%; max-width: 460px; box-shadow: var(--shadow); }
.modal-header { display: flex; justify-content: space-between; align-items: center; padding: 18px 22px; border-bottom: 1px solid var(--border); }
.modal-header h2 { font-size: 17px; margin: 0; }
.modal-close { background: none; border: none; color: var(--text-dim); font-size: 18px; }
.modal-body { padding: 20px 22px; }
.field-row { margin-bottom: 16px; }
.field-label { display: block; font-size: 13px; color: var(--text-dim); margin-bottom: 6px; }
.switch { display: flex; align-items: center; gap: 10px; font-size: 14px; cursor: pointer; }
.switch input { width: 18px; height: 18px; accent-color: var(--primary); }
.modal-body select, .modal-body input[type=text] {
    width: 100%; padding: 10px 12px; background: var(--bg); border: 1px solid var(--border);
    border-radius: 10px; color: var(--text); font-size: 14px;
}
.share-result { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }
.copy-row { display: flex; gap: 8px; }
.copy-row input { flex: 1; }
.existing-shares { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border); }
.existing-shares h3 { font-size: 13px; color: var(--text-dim); margin: 0 0 10px; text-transform: uppercase; letter-spacing: .04em; }
.existing-shares ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.share-row { display: flex; align-items: center; gap: 8px; font-size: 13px; background: var(--bg); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; }
.share-row .share-link { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-dim); }
.share-row .badge { font-size: 11px; padding: 2px 7px; border-radius: 999px; background: var(--bg-elev-2); color: var(--text-dim); }

/* ---------- Toast ---------- */
.toast {
    position: fixed; bottom: 26px; left: 50%; transform: translateX(-50%);
    background: var(--bg-elev-2); border: 1px solid var(--border); color: var(--text);
    padding: 12px 20px; border-radius: 10px; box-shadow: var(--shadow); z-index: 80; font-size: 14px;
}
.toast.error { border-color: var(--danger); }
.toast.success { border-color: var(--success); }

@media (max-width: 760px) {
    .workspace { grid-template-columns: 1fr; }
    .sidebar { display: none; }
}