/* ═══════════════════════════════════════════════════════════
   Visorium Portal — Design System
   ═══════════════════════════════════════════════════════════ */

/* ── Reset & base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    /* Brand */
    --color-brand:       #2E75B6;
    --color-brand-dark:  #1F5C99;
    --color-brand-light: #D6E4F0;

    /* Surfaces */
    --color-bg:          #0f1923;
    --color-bg-2:        #162030;
    --color-bg-3:        #1c2a3a;
    --color-surface:     #1f3254;
    --color-surface-2:   #243d65;
    --color-border:      rgba(255,255,255,0.10);
    --color-border-2:    rgba(255,255,255,0.18);

    /* Text */
    --color-text:        #e8edf4;
    --color-text-muted:  #8da3be;
    --color-text-subtle: #546880;

    /* Status */
    --color-success:     #1D9E75;
    --color-success-bg:  rgba(29,158,117,0.15);
    --color-danger:      #e24b4a;
    --color-danger-bg:   rgba(226,75,74,0.15);
    --color-warning:     #EF9F27;
    --color-warning-bg:  rgba(239,159,39,0.15);
    --color-info:        #2E75B6;
    --color-info-bg:     rgba(46,117,182,0.15);

    /* Metric colors */
    --metric-blue:       #2E75B6;
    --metric-blue-bg:    rgba(46,117,182,0.15);
    --metric-green:      #1D9E75;
    --metric-green-bg:   rgba(29,158,117,0.15);
    --metric-purple:     #7F77DD;
    --metric-purple-bg:  rgba(127,119,221,0.15);
    --metric-amber:      #EF9F27;
    --metric-amber-bg:   rgba(239,159,39,0.15);

    /* Layout */
    --sidebar-w:         220px;
    --topbar-h:          52px;
    --radius-sm:         6px;
    --radius-md:         10px;
    --radius-lg:         14px;

    /* Font */
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.55;
    color: var(--color-text);
    background: var(--color-bg);
}

/* ═══════════════════════════════════════════════════════════
   LAYOUT
   ═══════════════════════════════════════════════════════════ */

.ds-layout { display: flex; min-height: 100vh; }

/* Sidebar */
.ds-sidebar {
    width: var(--sidebar-w);
    background: var(--color-bg-2);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
}

.ds-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 20px 18px 16px;
    border-bottom: 1px solid var(--color-border);
}
.ds-brand-icon { font-size: 20px; color: var(--color-brand); }
.ds-brand-name { font-size: 17px; font-weight: 700; letter-spacing: -0.3px; color: var(--color-text); }

/* Nav */
.ds-nav { flex: 1; padding: 12px 10px; display: flex; flex-direction: column; gap: 2px; }
.ds-nav-section { margin-top: 16px; }
.ds-nav-section:first-child { margin-top: 4px; }
.ds-nav-label {
    display: block;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--color-text-subtle);
    padding: 0 8px 6px;
}
.ds-nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 13.5px;
    transition: background 0.15s, color 0.15s;
}
.ds-nav-item:hover { background: var(--color-bg-3); color: var(--color-text); }
.ds-nav-item.active {
    background: var(--color-brand-light);
    color: var(--color-brand-dark);
    font-weight: 600;
}
.ds-nav-icon { font-size: 13px; width: 16px; text-align: center; }

/* Sidebar footer */
.ds-sidebar-footer {
    border-top: 1px solid var(--color-border);
    padding: 14px 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.ds-user-info { display: flex; align-items: center; gap: 10px; }
.ds-user-avatar {
    width: 32px; height: 32px;
    background: var(--color-brand);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 13px; font-weight: 700;
    color: #fff;
    flex-shrink: 0;
}
.ds-user-name { display: block; font-size: 13px; font-weight: 600; color: var(--color-text); }
.ds-user-tenant { display: block; font-size: 11px; color: var(--color-text-muted); }
.ds-logout-btn {
    width: 100%;
    padding: 7px;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-size: 13px;
    cursor: pointer;
    transition: background 0.15s;
}
.ds-logout-btn:hover { background: var(--color-danger-bg); color: var(--color-danger); }

/* Main area */
.ds-main {
    margin-left: var(--sidebar-w);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.ds-topbar {
    height: var(--topbar-h);
    background: var(--color-bg-2);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky; top: 0; z-index: 50;
}
.ds-breadcrumb { font-size: 13px; color: var(--color-text-muted); }
.ds-plan-badge {
    font-size: 11px;
    font-weight: 600;
    padding: 3px 10px;
    background: var(--color-brand-light);
    color: var(--color-brand-dark);
    border-radius: 20px;
}
.ds-content { padding: 28px; max-width: 1280px; }

/* ═══════════════════════════════════════════════════════════
   PAGE HEADER
   ═══════════════════════════════════════════════════════════ */
.ds-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 24px;
    gap: 16px;
    flex-wrap: wrap;
}
.ds-page-title { font-size: 22px; font-weight: 700; color: var(--color-text); line-height: 1.2; }
.ds-page-subtitle { display: block; font-size: 13px; color: var(--color-text-muted); margin-top: 3px; }
.ds-page-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.ds-section-title { font-size: 15px; font-weight: 600; color: var(--color-text); margin-bottom: 12px; }

/* ═══════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════ */
.ds-btn {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13.5px; font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background 0.15s, opacity 0.15s, transform 0.1s;
    text-decoration: none;
    line-height: 1;
}
.ds-btn:active { transform: scale(0.98); }
.ds-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.ds-btn-primary { background: var(--color-brand); color: #fff; border-color: var(--color-brand-dark); }
.ds-btn-primary:hover:not(:disabled) { background: var(--color-brand-dark); }

.ds-btn-ghost { background: transparent; color: var(--color-text-muted); border-color: var(--color-border); }
.ds-btn-ghost:hover:not(:disabled) { background: var(--color-bg-3); color: var(--color-text); }

.ds-btn-danger { background: var(--color-danger); color: #fff; border-color: var(--color-danger); }
.ds-btn-danger:hover:not(:disabled) { opacity: 0.85; }

.ds-btn-sm { padding: 5px 12px; font-size: 12.5px; }
.ds-btn-full { width: 100%; justify-content: center; }
.ds-btn-add-slot { width: 100%; margin-top: 8px; border-style: dashed; }

.ds-btn-icon {
    background: transparent; border: none; cursor: pointer;
    color: var(--color-text-muted); font-size: 14px;
    padding: 4px 6px; border-radius: var(--radius-sm);
    transition: background 0.15s, color 0.15s;
}
.ds-btn-icon:hover { background: var(--color-bg-3); color: var(--color-text); }
.ds-btn-icon--danger:hover { background: var(--color-danger-bg); color: var(--color-danger); }

/* ═══════════════════════════════════════════════════════════
   FORMS
   ═══════════════════════════════════════════════════════════ */
.ds-form-group { display: flex; flex-direction: column; gap: 5px; margin-bottom: 14px; }
.ds-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.ds-label { font-size: 12.5px; font-weight: 500; color: var(--color-text-muted); }

.ds-input {
    background: var(--color-bg-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 9px 12px;
    color: var(--color-text);
    font-size: 14px;
    width: 100%;
    transition: border-color 0.15s;
}
.ds-input:focus { outline: none; border-color: var(--color-brand); }
.ds-input::placeholder { color: var(--color-text-subtle); }
.ds-input-sm { padding: 6px 10px; font-size: 13px; }
.ds-input-search { min-width: 200px; }
.ds-input-narrow { width: 90px; }
.ds-input-suffix { font-size: 12px; color: var(--color-text-muted); margin-left: 4px; }
select.ds-input { cursor: pointer; }

/* ═══════════════════════════════════════════════════════════
   CARDS
   ═══════════════════════════════════════════════════════════ */
.ds-card {
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}
.ds-card--compact { padding: 20px; margin-top: 16px; }
.ds-card--wide { grid-column: span 2; }
.ds-card-header {
    padding: 16px 20px 12px;
    border-bottom: 1px solid var(--color-border);
}
.ds-card-title { font-size: 14px; font-weight: 600; }
.ds-card-body { padding: 16px 20px; }

/* ═══════════════════════════════════════════════════════════
   METRIC CARDS
   ═══════════════════════════════════════════════════════════ */
.ds-metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin-bottom: 24px;
}
.ds-metric-card {
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 18px 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}
.ds-metric-icon { font-size: 22px; flex-shrink: 0; }
.ds-metric-value { display: block; font-size: 26px; font-weight: 700; line-height: 1; }
.ds-metric-title { display: block; font-size: 12px; color: var(--color-text-muted); margin-top: 4px; }

.ds-metric-card--blue   { border-left: 3px solid var(--metric-blue); }
.ds-metric-card--blue   .ds-metric-icon { color: var(--metric-blue); }
.ds-metric-card--blue   .ds-metric-value { color: var(--metric-blue); }
.ds-metric-card--green  { border-left: 3px solid var(--metric-green); }
.ds-metric-card--green  .ds-metric-icon { color: var(--metric-green); }
.ds-metric-card--green  .ds-metric-value { color: var(--metric-green); }
.ds-metric-card--purple { border-left: 3px solid var(--metric-purple); }
.ds-metric-card--purple .ds-metric-icon { color: var(--metric-purple); }
.ds-metric-card--purple .ds-metric-value { color: var(--metric-purple); }
.ds-metric-card--amber  { border-left: 3px solid var(--metric-amber); }
.ds-metric-card--amber  .ds-metric-icon { color: var(--metric-amber); }
.ds-metric-card--amber  .ds-metric-value { color: var(--metric-amber); }

/* ═══════════════════════════════════════════════════════════
   TABLES
   ═══════════════════════════════════════════════════════════ */
.ds-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.ds-table th {
    text-align: left; padding: 10px 12px;
    font-size: 11px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.5px;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}
.ds-table td { padding: 11px 12px; border-bottom: 1px solid var(--color-border); }
.ds-table tr:last-child td { border-bottom: none; }
.ds-table tr:hover td { background: var(--color-bg-3); }
.ds-table--full { width: 100%; }
.ds-td-name { font-weight: 500; }
.ds-td-muted { color: var(--color-text-muted); }
.ds-row-inactive td { opacity: 0.5; }

/* ═══════════════════════════════════════════════════════════
   STATUS & BADGES
   ═══════════════════════════════════════════════════════════ */
.ds-status-dot {
    display: inline-block;
    width: 8px; height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}
.ds-status-dot.online   { background: var(--color-success); box-shadow: 0 0 0 2px var(--color-success-bg); }
.ds-status-dot.syncing  { background: #f59e0b; box-shadow: 0 0 0 2px #fef3c7; }
.ds-status-dot.offline  { background: #ef4444; box-shadow: 0 0 0 2px #fee2e2; }

.ds-status-pill {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px; font-weight: 600;
}
.ds-status-pill.active  { background: var(--color-success-bg); color: var(--color-success); }
.ds-status-pill.inactive { background: var(--color-bg-3); color: var(--color-text-subtle); }

.ds-mode-badge {
    font-size: 10px; font-weight: 600;
    padding: 2px 8px; border-radius: 20px;
    text-transform: uppercase; letter-spacing: 0.4px;
}
.ds-mode-badge.offline { background: var(--color-warning-bg); color: var(--color-warning); }
.ds-mode-badge.online  { background: var(--color-info-bg); color: var(--color-info); }

/* ═══════════════════════════════════════════════════════════
   ALERTS
   ═══════════════════════════════════════════════════════════ */
.ds-alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 13.5px;
    margin: 12px 0;
}
.ds-alert-error   { background: var(--color-danger-bg);  color: var(--color-danger);  border: 1px solid var(--color-danger); }
.ds-alert-success { background: var(--color-success-bg); color: var(--color-success); border: 1px solid var(--color-success); }

/* ═══════════════════════════════════════════════════════════
   MODAL
   ═══════════════════════════════════════════════════════════ */
.ds-modal-backdrop {
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.7);
    display: flex; align-items: center; justify-content: center;
    z-index: 1000;
    padding: 20px;
}
.ds-modal {
    background: var(--color-bg-2);
    border: 1px solid var(--color-border-2);
    border-radius: var(--radius-lg);
    width: 100%; max-width: 540px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 24px 80px rgba(0,0,0,0.5);
}
.ds-modal--sm { max-width: 400px; }
.ds-modal-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 24px 16px;
    border-bottom: 1px solid var(--color-border);
}
.ds-modal-title { font-size: 16px; font-weight: 600; }
.ds-modal-close {
    background: none; border: none; cursor: pointer;
    color: var(--color-text-muted); font-size: 16px;
    padding: 4px 6px; border-radius: var(--radius-sm);
}
.ds-modal-close:hover { background: var(--color-bg-3); }
.ds-modal-body { padding: 20px 24px; }
.ds-modal-footer {
    display: flex; justify-content: flex-end; gap: 10px;
    padding: 16px 24px 20px;
    border-top: 1px solid var(--color-border);
}
.ds-modal-section-title {
    font-size: 12px; font-weight: 600;
    text-transform: uppercase; letter-spacing: 0.5px;
    color: var(--color-text-muted);
    margin: 18px 0 10px;
}
.ds-modal-section-title:first-child { margin-top: 0; }
.ds-confirm-message { color: var(--color-text-muted); font-size: 14px; line-height: 1.6; }

/* ═══════════════════════════════════════════════════════════
   CONTENT GRID
   ═══════════════════════════════════════════════════════════ */
.ds-content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 16px;
}
.ds-content-card {
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color 0.15s;
}
.ds-content-card:hover { border-color: var(--color-border-2); }
.ds-content-card--processing { opacity: 0.7; }
.ds-content-thumb {
    position: relative;
    aspect-ratio: 16/9;
    background: var(--color-bg-3);
    overflow: hidden;
}
.ds-content-thumb img { width: 100%; height: 100%; object-fit: cover; }
.ds-content-thumb-placeholder {
    width: 100%; height: 100%;
    display: flex; align-items: center; justify-content: center;
    font-size: 28px; color: var(--color-text-subtle);
}
.ds-content-processing-badge {
    position: absolute; inset: 0;
    background: rgba(0,0,0,0.6);
    display: flex; align-items: center; justify-content: center;
    font-size: 12px; font-weight: 600; color: var(--color-warning);
}
.ds-content-type-badge {
    position: absolute; top: 6px; right: 6px;
    background: rgba(0,0,0,0.7); color: #fff;
    font-size: 10px; font-weight: 600;
    padding: 2px 7px; border-radius: 20px;
}
.ds-content-info { padding: 12px; }
.ds-content-name {
    display: block;
    font-size: 13px; font-weight: 500;
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.ds-content-meta { display: block; font-size: 11px; color: var(--color-text-muted); margin-top: 3px; }
.ds-content-date { display: block; font-size: 11px; color: var(--color-text-subtle); margin-top: 2px; }
.ds-content-actions {
    display: flex; justify-content: flex-end; gap: 4px;
    padding: 4px 8px 8px;
}

/* ═══════════════════════════════════════════════════════════
   UPLOAD
   ═══════════════════════════════════════════════════════════ */
.ds-upload-area {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    position: relative;
    margin-bottom: 20px;
    transition: border-color 0.15s;
}
.ds-upload-area:hover { border-color: var(--color-brand); }
.ds-upload-input { position: absolute; inset: 0; opacity: 0; width: 100%; height: 100%; cursor: pointer; }
.ds-upload-label {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    padding: 60px 20px;
    cursor: pointer; gap: 10px;
}
.ds-upload-icon { font-size: 36px; color: var(--color-brand); }
.ds-upload-text { font-size: 15px; font-weight: 500; }
.ds-upload-hint { font-size: 12px; color: var(--color-text-muted); }
.ds-upload-status { font-size: 13.5px; color: var(--color-text-muted); margin-bottom: 10px; }
.ds-progress-bar {
    height: 6px; background: var(--color-bg-3);
    border-radius: 3px; overflow: hidden;
}
.ds-progress-fill {
    height: 100%; background: var(--color-brand);
    border-radius: 3px; transition: width 0.3s;
}
.ds-progress-label { display: block; font-size: 12px; color: var(--color-text-muted); margin-top: 6px; text-align: right; }

/* ═══════════════════════════════════════════════════════════
   NETWORK TREE
   ═══════════════════════════════════════════════════════════ */
.ds-network-tree { display: flex; flex-direction: column; gap: 10px; }
.ds-store-node {
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: border-color 0.15s;
}
.ds-store-node:hover { border-color: var(--color-border-2); }
.ds-store-node--active { border-color: var(--color-brand); }
.ds-store-header {
    display: flex; align-items: center; gap: 14px;
    padding: 16px 20px;
}
.ds-store-icon { font-size: 18px; color: var(--color-brand); flex-shrink: 0; }
.ds-store-info { flex: 1; }
.ds-store-name { display: block; font-weight: 600; font-size: 14px; }
.ds-store-address { display: block; font-size: 12px; color: var(--color-text-muted); margin-top: 2px; }
.ds-store-badge {
    background: var(--color-brand-light);
    color: var(--color-brand-dark);
    font-size: 11px; font-weight: 600;
    padding: 3px 10px; border-radius: 20px;
    white-space: nowrap;
}
.ds-screens-panel {
    border-top: 1px solid var(--color-border);
    padding: 16px 20px;
    background: var(--color-bg-3);
}
.ds-screens-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.ds-screens-title { font-size: 13px; font-weight: 600; color: var(--color-text-muted); }
.ds-screens-grid { display: flex; flex-direction: column; gap: 8px; }
.ds-screen-card {
    display: flex; align-items: center; gap: 12px;
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
}
.ds-screen-details { flex: 1; }
.ds-screen-name { display: block; font-size: 13px; font-weight: 500; }
.ds-screen-meta { display: block; font-size: 11px; color: var(--color-text-muted); margin-top: 1px; }
.ds-screen-actions { display: flex; align-items: center; gap: 8px; }

/* ═══════════════════════════════════════════════════════════
   SCHEDULE
   ═══════════════════════════════════════════════════════════ */
.ds-schedule-layout { display: grid; grid-template-columns: 220px 1fr; gap: 20px; }
.ds-schedule-sidebar { display: flex; flex-direction: column; gap: 4px; }
.ds-screen-selector {
    display: flex; align-items: center; gap: 10px;
    padding: 10px 14px;
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    cursor: pointer; text-align: left; width: 100%;
    transition: border-color 0.15s;
    color: var(--color-text);
}
.ds-screen-selector:hover { border-color: var(--color-border-2); }
.ds-screen-selector.active { border-color: var(--color-brand); background: var(--color-bg-3); }
.ds-screen-selector-name { display: block; font-size: 13px; font-weight: 500; }
.ds-screen-selector-mode { display: block; font-size: 11px; color: var(--color-text-muted); }

.ds-schedule-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 18px; flex-wrap: wrap; gap: 12px; }
.ds-schedule-dates { display: flex; align-items: center; gap: 8px; }
.ds-slots { display: flex; flex-direction: column; gap: 8px; }
.ds-slot-row {
    display: grid;
    grid-template-columns: 28px 1fr 130px 260px auto auto;
    gap: 10px;
    align-items: center;
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
}
.ds-slot-num { font-size: 12px; color: var(--color-text-muted); font-weight: 600; text-align: center; }
.ds-slot-duration { display: flex; align-items: center; }
.ds-slot-time { display: flex; align-items: center; gap: 6px; }
.ds-slot-days { display: flex; gap: 4px; flex-wrap: wrap; }
.ds-day-btn {
    width: 28px; height: 28px;
    font-size: 10px; font-weight: 600;
    border-radius: 50%;
    background: var(--color-bg-3);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: background 0.15s;
}
.ds-day-btn.active { background: var(--color-brand); color: #fff; border-color: var(--color-brand); }
.ds-schedule-footer { display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px; }

/* ═══════════════════════════════════════════════════════════
   ANALYTICS CHART
   ═══════════════════════════════════════════════════════════ */
.ds-analytics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.ds-bar-chart {
    display: flex;
    align-items: flex-end;
    gap: 4px;
    height: 160px;
    padding-top: 12px;
}
.ds-bar-col { display: flex; flex-direction: column; align-items: center; gap: 6px; flex: 1; height: 100%; justify-content: flex-end; }
.ds-bar {
    width: 100%; min-height: 4px;
    background: var(--color-brand);
    border-radius: 3px 3px 0 0;
    transition: height 0.3s;
    opacity: 0.8;
}
.ds-bar-col:hover .ds-bar { opacity: 1; }
.ds-bar-label { font-size: 10px; color: var(--color-text-subtle); white-space: nowrap; }

/* ═══════════════════════════════════════════════════════════
   DASHBOARD
   ═══════════════════════════════════════════════════════════ */
.ds-dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.ds-device-row {
    display: flex; align-items: center; gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 13px;
}
.ds-device-row:last-child { border-bottom: none; }
.ds-device-id { flex: 1; font-family: monospace; color: var(--color-text-muted); }
.ds-device-version { font-size: 11px; color: var(--color-text-subtle); }
.ds-device-time { font-size: 11px; color: var(--color-text-subtle); }

/* ═══════════════════════════════════════════════════════════
   LOGIN
   ═══════════════════════════════════════════════════════════ */
.ds-login-wrapper {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    background: var(--color-bg);
    padding: 20px;
}
.ds-login-card {
    background: var(--color-bg-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    width: 100%; max-width: 400px;
}
.ds-login-brand { text-align: center; margin-bottom: 32px; }
.ds-brand-icon-lg { font-size: 36px; color: var(--color-brand); display: block; margin-bottom: 8px; }
.ds-login-title { font-size: 24px; font-weight: 700; }
.ds-login-subtitle { font-size: 13px; color: var(--color-text-muted); margin-top: 4px; }

/* ═══════════════════════════════════════════════════════════
   SPINNERS & LOADING
   ═══════════════════════════════════════════════════════════ */
.ds-loading { display: flex; justify-content: center; padding: 60px; }
.ds-loading-sm { display: flex; justify-content: center; padding: 20px; }
.ds-spinner {
    width: 36px; height: 36px;
    border: 3px solid var(--color-bg-3);
    border-top-color: var(--color-brand);
    border-radius: 50%;
    animation: ds-spin 0.7s linear infinite;
}
.ds-spinner-sm {
    display: inline-block;
    width: 14px; height: 14px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: ds-spin 0.7s linear infinite;
}
@keyframes ds-spin { to { transform: rotate(360deg); } }

/* ═══════════════════════════════════════════════════════════
   EMPTY STATES
   ═══════════════════════════════════════════════════════════ */
.ds-empty-state {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    padding: 80px 20px;
    text-align: center; gap: 14px;
    color: var(--color-text-muted);
}
.ds-empty-icon { font-size: 48px; color: var(--color-text-subtle); }
.ds-empty { color: var(--color-text-muted); font-size: 13px; padding: 20px 0; }
.ds-empty-sm { font-size: 12px; color: var(--color-text-muted); padding: 12px 0; }

/* ═══════════════════════════════════════════════════════════
   UTILITIES
   ═══════════════════════════════════════════════════════════ */
.ds-mt-sm { margin-top: 10px; }
.ds-not-found { text-align: center; padding: 80px; }