:root {
    /* Иконочная рейка */
    --rail-bg:           #1f1e24;
    --rail-icon:         rgba(255,255,255,0.55);
    --rail-icon-active:  #ffffff;
    --rail-width:        48px;

    /* Навигационная панель */
    --nav-bg:            #ffffff;
    --nav-border:        #dcdcde;
    --nav-width:         240px;
    --nav-item-hover:    #e4e6e9;
    --nav-item-active-text: #6b4fbb;
    --nav-item-active-bg:   #f0ebff;

    /* Топбар */
    --topbar-bg:         #f0f2f5;
    --topbar-border:     #dcdcde;
    --topbar-height:     56px;

    /* Контент */
    --bg:                #f4f5f7;
    --card:              #ffffff;
    --text:              #1f1e24;
    --text-primary:      #1f1e24;
    --text-secondary:    #525252;
    --text-muted:        #6b6b6b;
    --muted:             #6b6b6b;
    --border:            #dcdcde;
    --bg-hover:          #ececef;
    --bg-input:          #ffffff;

    /* Акцент */
    --accent:            #6b4fbb;
    --primary:           #6b4fbb;
    --primary-hover:     #5943a8;
    --primary-light:     #f0ebff;

    /* Статусы */
    --success:           #217645;
    --danger:            #c91c00;
    --danger-hover:      #a91500;
    --danger-light:      #fff0ed;
    --secondary:         #ececef;
    --secondary-hover:   #dcdcde;

    /* Слоты расписания */
    --slot-height:       160px;
    --free-bg:           #f0fdf4;
    --busy-bg:           #f5f5f5;
    --past-bg:           #f8f8f8;
    --th-bg:             #f8fafc;

    /* Общее */
    --radius:            6px;
    --radius-lg:         10px;
    --shadow-sm:         0 1px 3px rgba(0,0,0,0.08);
    --shadow:            0 2px 8px rgba(0,0,0,0.10);
    --shadow-lg:         0 8px 30px rgba(0,0,0,0.10);
}

:root.dark {
    --rail-bg:              #1a1a22;
    --nav-bg:               #24242c;
    --nav-border:           #2e2e36;
    --nav-item-hover:       #2e2e38;
    --nav-item-active-bg:   #2d2540;
    --nav-item-active-text: #c9b8ff;
    --topbar-bg:            #24242c;
    --topbar-border:        #2e2e36;
    --bg:                   #141418;
    --card:                 #1a1a22;
    --text:                 #dde1e7;
    --text-primary:         #dde1e7;
    --text-secondary:       #9ea7b8;
    --text-muted:           #6b7280;
    --border:               #2e2e36;
    --bg-hover:             #2e2e38;
    --bg-input:             #1e1e26;
    --secondary:            #26262e;
    --secondary-hover:      #2e2e38;
    --primary-light:        #2d2540;
    --free-bg:              #162218;
    --busy-bg:              #24242c;
    --past-bg:              #1e1e26;
    --th-bg:                #1e1e26;
}

/* SVG иконки в nav item */
.gl-nav-item-icon svg {
    width: 18px;
    height: 18px;
    display: block;
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* User avatar & dropdown */
.gl-user-wrap { position: relative; }

.gl-user-btn {
    width: 32px; height: 32px;
    border-radius: 50%;
    border: none; padding: 0; cursor: pointer;
    background: var(--accent); color: #fff;
    font-size: 12px; font-weight: 600;
    display: flex; align-items: center; justify-content: center;
}

.gl-user-avatar {
    width: 32px; height: 32px;
    background: var(--accent); color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 600;
    flex-shrink: 0;
}

.gl-user-dropdown {
    position: absolute; top: calc(100% + 8px); right: 0;
    min-width: 200px;
    background: var(--card); border: 1px solid var(--border);
    border-radius: var(--radius); box-shadow: var(--shadow-lg);
    z-index: 1000; display: none;
}
.gl-user-dropdown.open { display: block; }

.gl-user-dropdown-info {
    padding: 12px 16px;
    display: flex; flex-direction: column; gap: 2px;
}
.gl-user-dropdown-name { font-weight: 600; font-size: 14px; color: var(--text); }
.gl-user-dropdown-role { font-size: 12px; color: var(--text-muted); }
.gl-user-dropdown-divider { height: 1px; background: var(--border); }

.gl-user-dropdown-item {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 16px; color: var(--text);
    text-decoration: none; font-size: 14px;
    transition: background 0.12s;
    width: 100%; border: none; background: none;
    cursor: pointer; font-family: inherit; text-align: left;
}
.gl-user-dropdown-item:hover { background: var(--bg-hover); }
.gl-user-dropdown-item--danger { color: var(--danger); }
.gl-user-dropdown-item svg { width: 15px; height: 15px; flex-shrink: 0; }

.gl-user-dropdown-section {
    padding: 8px 16px 4px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* Theme grid (settings page) */
/* Slot size grid (settings page) */
.gl-slot-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    max-width: 540px;
}

.gl-slot-card {
    border: 2px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    background: none;
    padding: 0;
    text-align: left;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.gl-slot-card:hover   { border-color: var(--text-muted); }
.gl-slot-card.active  { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }

.gl-sp-preview {
    height: 72px;
    background: var(--bg);
    padding: 8px 10px;
    display: flex;
    flex-direction: column;
    justify-content: space-around;
}

.gl-sp-row {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.gl-sp-line {
    display: block;
    height: 3px;
    border-radius: 2px;
    background: var(--border);
}

.gl-sp-line--sm { opacity: 0.5; }

/* Theme grid (settings page) */
.gl-theme-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(148px, 1fr));
    gap: 12px;
}

.gl-theme-card {
    border: 2px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    background: none;
    padding: 0;
    text-align: left;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.gl-theme-card:hover {
    border-color: var(--text-muted);
}

.gl-theme-card.active {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent);
}

/* Mini UI preview */
.gl-tp {
    height: 80px;
    display: flex;
    flex-direction: column;
}

.gl-tp-bar {
    height: 14px;
    background: rgba(0,0,0,0.08);
    flex-shrink: 0;
}

.gl-tp-body {
    flex: 1;
    display: flex;
}

.gl-tp-sidebar {
    width: 38%;
    padding: 6px 6px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.gl-tp-dot {
    display: block;
    height: 4px;
    border-radius: 3px;
    width: 80%;
}

.gl-tp-content {
    flex: 1;
    border-top-left-radius: 7px;
    padding: 7px 8px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.gl-tp-line {
    display: block;
    height: 3px;
    border-radius: 2px;
    width: 100%;
}

.gl-tp-card {
    margin-top: 2px;
    border-radius: 3px;
    padding: 4px 5px;
}

.gl-theme-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    border-top: 1px solid var(--border);
}

.gl-theme-card-name {
    font-size: 12px;
    font-weight: 500;
    color: var(--text);
}

.gl-theme-card-check {
    display: none;
    color: var(--accent);
    flex-shrink: 0;
}

.gl-theme-card-check svg {
    width: 14px;
    height: 14px;
    display: block;
}

.gl-theme-card.active .gl-theme-card-check {
    display: flex;
}

/* Settings page */
.settings-page { max-width: 720px; margin: 0 auto; }
.settings-tabs { display: flex; border-bottom: 2px solid var(--border); margin-bottom: 32px; }
.settings-tab {
    padding: 10px 20px; border: none; background: none;
    color: var(--text-secondary); font: inherit; font-size: 14px; font-weight: 500;
    cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -2px;
    transition: color 0.15s, border-color 0.15s;
}
.settings-tab:hover { color: var(--text); }
.settings-tab.active { color: var(--primary); border-bottom-color: var(--primary); }
.settings-section { margin-bottom: 28px; }
.settings-section-title {
    font-size: 12px; font-weight: 600; color: var(--text-muted);
    text-transform: uppercase; letter-spacing: 0.06em; margin: 0 0 12px;
}
.settings-presets { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.settings-color-preset {
    width: 28px; height: 28px; border-radius: 50%;
    border: 2px solid transparent; cursor: pointer; padding: 0;
    transition: transform 0.15s, border-color 0.15s;
}
.settings-color-preset:hover { transform: scale(1.15); }
.settings-color-preset.active { border-color: var(--text); transform: scale(1.1); }
.settings-color-custom { cursor: pointer; display: flex; align-items: center; }
.settings-color-custom input[type="color"] {
    width: 28px; height: 28px; padding: 0; border: 2px solid var(--border);
    border-radius: 50%; cursor: pointer; background: none;
}
.settings-theme-toggle { display: flex; gap: 8px; }
.settings-theme-btn {
    padding: 8px 20px; border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--card); color: var(--text); font: inherit; font-size: 14px;
    cursor: pointer; transition: background 0.15s;
}
.settings-theme-btn:hover { background: var(--bg-hover); }
.settings-theme-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.settings-slot-size { display: flex; align-items: center; gap: 12px; }
/* Custom theme color picker panel */
#customThemePanel {
    margin-top: 4px;
    padding: 16px 0 4px;
    border-top: 1px solid var(--border);
}
.custom-color-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px 16px;
}
.custom-color-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}
.custom-color-field input[type="color"] {
    width: 100%;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: 6px;
    cursor: pointer;
    padding: 3px;
    background: var(--card);
    transition: border-color 0.15s;
}
.custom-color-field input[type="color"]:hover {
    border-color: var(--text-muted);
}
@media (max-width: 600px) {
    .custom-color-grid { grid-template-columns: repeat(2, 1fr); }
}
.settings-slot-size input[type="range"] { flex: 1; max-width: 320px; accent-color: var(--primary); }
.settings-slot-size span { font-size: 14px; color: var(--text-secondary); min-width: 40px; }

/* Password form (Task 7) */
.settings-password-form { max-width: 400px; display: flex; flex-direction: column; gap: 16px; }
.settings-field { display: flex; flex-direction: column; gap: 4px; }
.settings-label { font-size: 13px; font-weight: 500; color: var(--text-secondary); }
.settings-input {
    padding: 8px 12px; border: 1px solid var(--border); border-radius: var(--radius);
    background: var(--bg-input); color: var(--text); font: inherit; font-size: 14px;
    transition: border-color 0.15s;
}
.settings-input:focus { outline: none; border-color: var(--primary); }
.settings-field-error { font-size: 12px; color: var(--danger); margin: 0; min-height: 16px; }