/* =============================================================================
   DIARAB SCHOOL — DESIGN SYSTEM
   Architecture: Multi-tenant SaaS — Brutalisme Numérique
   Typographie: Bebas Neue (Display) / Space Grotesk (Corps) / JetBrains Mono (Data)
   ============================================================================= */

/* --- RESET & ROOT ---------------------------------------------------------- */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Palette */
    --bg-void:        #0A0A0F;
    --bg-surface:     #111118;
    --bg-elevated:    #1C1C28;
    --bg-hover:       #252535;
    --accent:         #E8FF47;
    --accent-dim:     rgba(232, 255, 71, 0.12);
    --accent-border:  rgba(232, 255, 71, 0.35);
    --text-primary:   #F0F0F0;
    --text-secondary: #8888AA;
    --text-muted:     #5A5A72;
    --text-accent:    #E8FF47;
    --border:         rgba(255, 255, 255, 0.07);
    --border-strong:  rgba(255, 255, 255, 0.14);
    --danger:         #FF4444;
    --danger-dim:     rgba(255, 68, 68, 0.12);
    --warn:           #FFA500;
    --warn-dim:       rgba(255, 165, 0, 0.12);
    --success:        #44FF88;
    --success-dim:    rgba(68, 255, 136, 0.12);

    /* Typography scale */
    --font-display:   'Bebas Neue', sans-serif;
    --font-body:      'Space Grotesk', sans-serif;
    --font-mono:      'JetBrains Mono', monospace;

    /* Sizing */
    --sidebar-w:      260px;
    --sidebar-w-collapsed: 72px;
    --topbar-h:       60px;
    --radius:         0px;

    /* Transitions */
    --t-fast:  150ms cubic-bezier(0.4, 0, 0.2, 1);
    --t-mid:   300ms cubic-bezier(0.4, 0, 0.2, 1);
    --t-slow:  600ms cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background: var(--bg-void);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    overflow-x: hidden;
}

/* --- SCANLINE OVERLAY ------------------------------------------------------ */

.scanline-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    pointer-events: none;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.04) 2px,
        rgba(0, 0, 0, 0.04) 4px
    );
    animation: scanlineShift 8s linear infinite;
}

@keyframes scanlineShift {
    0%   { background-position: 0 0; }
    100% { background-position: 0 100px; }
}

/* --- BOOT SEQUENCE --------------------------------------------------------- */

.boot-sequence {
    position: fixed;
    inset: 0;
    z-index: 9998;
    background: var(--bg-void);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.boot-sequence.hidden {
    opacity: 0;
    visibility: hidden;
}

.boot-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    width: 320px;
}

.boot-logo {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.boot-logo-text {
    font-family: var(--font-display);
    font-size: 4rem;
    letter-spacing: 0.08em;
    color: var(--text-primary);
    animation: bootLogoIn 0.6s ease forwards;
}

.boot-logo-accent {
    font-family: var(--font-display);
    font-size: 4rem;
    letter-spacing: 0.08em;
    color: var(--accent);
    animation: bootLogoIn 0.6s 0.15s ease both;
}

@keyframes bootLogoIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.boot-bar-wrap {
    width: 100%;
    height: 2px;
    background: var(--border);
    overflow: hidden;
}

.boot-bar {
    height: 100%;
    width: 0%;
    background: var(--accent);
    transition: width 0.1s linear;
    box-shadow: 0 0 12px var(--accent);
}

.boot-status {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
    text-transform: uppercase;
    min-height: 1em;
}

/* --- APP SHELL ------------------------------------------------------------- */

.app-shell {
    display: flex;
    min-height: 100vh;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.app-shell.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- SIDEBAR --------------------------------------------------------------- */

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-w);
    height: 100vh;
    background: var(--bg-surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: width var(--t-mid);
    overflow: hidden;
}

/* Sidebar Header */
.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    overflow: hidden;
}

.sidebar-logo-mark {
    position: relative;
    width: 36px;
    height: 36px;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--bg-void);
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

.logo-pulse {
    position: absolute;
    inset: 0;
    background: var(--accent);
    animation: logoPulse 2.5s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { opacity: 0; transform: scale(1); }
    50%       { opacity: 0.3; transform: scale(1.5); }
}

.sidebar-logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
    white-space: nowrap;
}

.logo-primary {
    font-family: var(--font-display);
    font-size: 1.1rem;
    letter-spacing: 0.12em;
    color: var(--text-primary);
}

.logo-secondary {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    color: var(--accent);
}

.sidebar-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 6px;
    background: none;
    border: none;
    cursor: pointer;
    flex-shrink: 0;
}

.sidebar-toggle span {
    display: block;
    width: 16px;
    height: 1px;
    background: var(--text-muted);
    transition: var(--t-fast);
}

.sidebar-toggle:hover span { background: var(--accent); }

/* School Selector */
.school-selector {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.school-selector-label {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.school-selector-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 8px 12px;
    cursor: pointer;
    transition: var(--t-fast);
    white-space: nowrap;
    overflow: hidden;
}

.school-selector-btn:hover {
    border-color: var(--accent-border);
    background: var(--bg-hover);
}

.school-indicator {
    width: 8px;
    height: 8px;
    background: var(--success);
    flex-shrink: 0;
    animation: statusBlink 2s ease-in-out infinite;
}

@keyframes statusBlink {
    0%, 90%, 100% { opacity: 1; }
    45%            { opacity: 0.3; }
}

.school-name {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.school-selector-btn .chevron {
    width: 14px;
    height: 14px;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* Sidebar Navigation */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 16px 0;
    scrollbar-width: thin;
    scrollbar-color: var(--border) transparent;
}

.sidebar-nav::-webkit-scrollbar { width: 3px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--border); }

.nav-section {
    margin-bottom: 24px;
}

.nav-section-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.55rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    padding: 0 20px;
    margin-bottom: 6px;
    white-space: nowrap;
}

.nav-list {
    list-style: none;
}

.nav-item {}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--t-fast);
    position: relative;
    white-space: nowrap;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent);
    transform: scaleY(0);
    transition: transform var(--t-fast);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-elevated);
}

.nav-link:hover::before {
    transform: scaleY(0.4);
}

.nav-item.active .nav-link {
    color: var(--accent);
    background: var(--accent-dim);
}

.nav-item.active .nav-link::before {
    transform: scaleY(1);
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.nav-icon svg {
    width: 18px;
    height: 18px;
}

.nav-label {
    font-size: 0.85rem;
    font-weight: 500;
}

.nav-badge {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 700;
    background: var(--accent);
    color: var(--bg-void);
    padding: 2px 6px;
    flex-shrink: 0;
}

.nav-badge--warn {
    background: var(--warn);
}

.nav-status {
    margin-left: auto;
    width: 7px;
    height: 7px;
    flex-shrink: 0;
}

.nav-status--live {
    background: var(--success);
    animation: statusBlink 2s ease-in-out infinite;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border);
    flex-shrink: 0;
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    overflow: hidden;
}

.sidebar-user-avatar {
    width: 34px;
    height: 34px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--accent);
    flex-shrink: 0;
}

.sidebar-user-info {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    flex: 1;
}

.user-name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    white-space: nowrap;
}

.sidebar-logout {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: color var(--t-fast);
    flex-shrink: 0;
}

.sidebar-logout svg { width: 16px; height: 16px; }

.sidebar-logout:hover { color: var(--danger); }

.system-status {
    display: flex;
    align-items: center;
    gap: 8px;
}

.system-status-dot {
    width: 6px;
    height: 6px;
    flex-shrink: 0;
    background: var(--success);
    animation: statusBlink 3s ease-in-out infinite;
}

.system-status-text {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    white-space: nowrap;
}

/* --- TOPBAR ---------------------------------------------------------------- */

.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--topbar-h);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--text-muted);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb-root {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}

.breadcrumb-sep {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.breadcrumb-current {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-primary);
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.topbar-clock {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 1px;
}

.clock-time {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: 0.08em;
}

.clock-date {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    text-transform: uppercase;
}

.topbar-btn {
    position: relative;
    width: 36px;
    height: 36px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--t-fast);
}

.topbar-btn svg { width: 18px; height: 18px; }

.topbar-btn:hover {
    border-color: var(--accent-border);
    color: var(--accent);
}

.topbar-btn-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    width: 16px;
    height: 16px;
    background: var(--danger);
    font-family: var(--font-mono);
    font-size: 0.55rem;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: badgePop 0.4s cubic-bezier(0.68, -0.55, 0.27, 1.55) forwards;
}

@keyframes badgePop {
    from { transform: scale(0); }
    to   { transform: scale(1); }
}

/* Notifications Dropdown */
.notif-dropdown {
    position: absolute;
    top: calc(var(--topbar-h) + 4px);
    right: 100px;
    width: 320px;
    background: var(--bg-surface);
    border: 1px solid var(--border-strong);
    z-index: 200;
    display: none;
    animation: dropdownReveal 0.2s ease forwards;
}

.notif-dropdown.open {
    display: block;
}

@keyframes dropdownReveal {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.notif-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}

.notif-title {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.18em;
    color: var(--text-muted);
}

.notif-mark-all {
    font-family: var(--font-body);
    font-size: 0.7rem;
    color: var(--accent);
    background: none;
    border: none;
    cursor: pointer;
}

.notif-list {
    list-style: none;
}

.notif-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    transition: background var(--t-fast);
}

.notif-item:hover { background: var(--bg-elevated); }

.notif-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    flex-shrink: 0;
    margin-top: 6px;
}

.notif-dot--warn { background: var(--warn); }

.notif-item--unread .notif-dot {
    animation: statusBlink 2s ease-in-out infinite;
}

.notif-content {}

.notif-text {
    font-size: 0.8rem;
    color: var(--text-primary);
    line-height: 1.4;
    margin-bottom: 4px;
}

.notif-time {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text-muted);
}

/* Worker Status */
.topbar-worker {
    display: flex;
    align-items: center;
    gap: 6px;
}

.worker-dot {
    width: 6px;
    height: 6px;
    background: var(--success);
    animation: statusBlink 2s ease-in-out infinite;
}

.worker-dot--idle   { background: var(--warn); }
.worker-dot--error  { background: var(--danger); animation: none; }

.worker-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.15em;
    color: var(--text-muted);
}

/* --- MAIN CONTENT ---------------------------------------------------------- */

.main-content {
    margin-left: var(--sidebar-w);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--t-mid);
}

.page-content {
    flex: 1;
    padding: 32px 28px;
}

/* --- FLASH MESSAGES -------------------------------------------------------- */

.flash-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}

.flash {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-left: 3px solid;
    animation: flashIn 0.3s ease forwards;
}

@keyframes flashIn {
    from { opacity: 0; transform: translateX(-8px); }
    to   { opacity: 1; transform: translateX(0); }
}

.flash--success { background: var(--success-dim); border-color: var(--success); }
.flash--error   { background: var(--danger-dim);  border-color: var(--danger); }
.flash--warning { background: var(--warn-dim);    border-color: var(--warn); }
.flash--info    { background: var(--accent-dim);  border-color: var(--accent); }

.flash-text {
    font-size: 0.85rem;
    color: var(--text-primary);
}

.flash-close {
    width: 24px;
    height: 24px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.flash-close svg { width: 14px; height: 14px; }
.flash-close:hover { color: var(--text-primary); }

/* --- SHARED COMPONENT: PAGE HEADER ---------------------------------------- */

.page-header {
    margin-bottom: 32px;
}

.page-header-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 4px;
}

.page-title {
    font-family: var(--font-display);
    font-size: 2.8rem;
    letter-spacing: 0.04em;
    color: var(--text-primary);
    line-height: 1;
}

.page-subtitle {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.18em;
    color: var(--text-muted);
    margin-top: 8px;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

/* --- SHARED COMPONENT: BUTTONS -------------------------------------------- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
    transition: var(--t-fast);
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.06);
    opacity: 0;
    transition: opacity var(--t-fast);
}

.btn:hover::after { opacity: 1; }

.btn svg { width: 16px; height: 16px; flex-shrink: 0; }

.btn--primary {
    background: var(--accent);
    color: var(--bg-void);
    border-color: var(--accent);
}

.btn--primary:hover {
    box-shadow: 0 0 20px var(--accent-border), 0 0 40px rgba(232, 255, 71, 0.1);
    transform: translateY(-1px);
}

.btn--secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.btn--secondary:hover {
    border-color: var(--accent-border);
    color: var(--accent);
}

.btn--ghost {
    background: transparent;
    color: var(--text-secondary);
    border-color: var(--border);
}

.btn--ghost:hover {
    color: var(--text-primary);
    border-color: var(--border-strong);
}

.btn--danger {
    background: var(--danger-dim);
    color: var(--danger);
    border-color: var(--danger);
}

.btn--sm {
    padding: 6px 14px;
    font-size: 0.75rem;
}

/* --- SHARED COMPONENT: CARDS ---------------------------------------------- */

.card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--accent-border), transparent);
    opacity: 0;
    transition: opacity var(--t-mid);
}

.card:hover::before { opacity: 1; }

.card:hover {
    border-color: var(--border-strong);
}

.card--glow:hover {
    box-shadow: 0 0 30px rgba(232, 255, 71, 0.06);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 20px;
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.18em;
    color: var(--text-muted);
    text-transform: uppercase;
}

.card-body {
    padding: 20px;
}

/* --- SHARED COMPONENT: STAT CARD ------------------------------------------ */

.stat-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 20px;
    position: relative;
    overflow: hidden;
    transition: var(--t-fast);
}

.stat-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--t-mid);
}

.stat-card:hover::after { transform: scaleX(1); }

.stat-card:hover {
    border-color: var(--accent-border);
    box-shadow: 0 4px 24px rgba(232, 255, 71, 0.06);
    transform: translateY(-2px);
}

/* The scan line animation inside cards */
.stat-card .scan-line {
    position: absolute;
    top: 0;
    left: -100%;
    width: 60%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(232, 255, 71, 0.04), transparent);
    animation: cardScan 2.5s ease-in-out forwards;
}

@keyframes cardScan {
    0%   { left: -60%; }
    100% { left: 110%; }
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 3rem;
    line-height: 1;
    color: var(--text-primary);
    letter-spacing: 0.02em;
    margin-bottom: 8px;
}

.stat-value.counting { color: var(--accent); }

.stat-delta {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    padding: 2px 8px;
}

.stat-delta--up {
    color: var(--success);
    background: var(--success-dim);
}

.stat-delta--down {
    color: var(--danger);
    background: var(--danger-dim);
}

.stat-delta--neutral {
    color: var(--text-muted);
    background: var(--bg-hover);
}

/* --- SHARED COMPONENT: TABLE ----------------------------------------------- */

.table-wrap {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead tr {
    border-bottom: 2px solid var(--border-strong);
}

.data-table th {
    padding: 10px 16px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.16em;
    color: var(--text-muted);
    text-align: left;
    white-space: nowrap;
}

.data-table td {
    padding: 13px 16px;
    font-size: 0.82rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: background var(--t-fast);
}

.data-table tbody tr:hover {
    background: var(--bg-hover);
}

.data-table tbody tr:hover td:first-child {
    border-left: 2px solid var(--accent);
    padding-left: 14px;
}

/* --- SHARED COMPONENT: BADGES --------------------------------------------- */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 8px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    font-weight: 500;
}

.badge--success { background: var(--success-dim); color: var(--success); }
.badge--danger  { background: var(--danger-dim);  color: var(--danger); }
.badge--warn    { background: var(--warn-dim);    color: var(--warn); }
.badge--neutral { background: var(--bg-hover);    color: var(--text-muted); }
.badge--accent  { background: var(--accent-dim);  color: var(--accent); }

/* --- SHARED COMPONENT: FORM INPUTS ---------------------------------------- */

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.16em;
    color: var(--text-muted);
    text-transform: uppercase;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 10px 14px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--t-fast), box-shadow var(--t-fast);
    appearance: none;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--accent-border);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-input::placeholder { color: var(--text-muted); }

.form-textarea { resize: vertical; min-height: 100px; }

/* --- GRID UTILITIES -------------------------------------------------------- */

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* --- DIVIDER --------------------------------------------------------------- */

.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 24px 0;
}

.section-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    color: var(--text-muted);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* --- ANIMATIONS (reduced-motion safe) -------------------------------------- */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* --- RESPONSIVE ------------------------------------------------------------- */

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform var(--t-mid);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .topbar-clock { display: none; }
    .worker-label { display: none; }

    .page-content {
        padding: 20px 16px;
    }

    .grid-2,
    .grid-3,
    .grid-4 { grid-template-columns: 1fr; }

    .notif-dropdown {
        right: 8px;
        width: calc(100vw - 16px);
    }
}

/* --- COLLAPSED SIDEBAR ----------------------------------------------------- */

.sidebar.collapsed {
    width: var(--sidebar-w-collapsed);
}

.sidebar.collapsed .sidebar-logo-text,
.sidebar.collapsed .school-selector-label,
.sidebar.collapsed .school-name,
.sidebar.collapsed .chevron,
.sidebar.collapsed .nav-label,
.sidebar.collapsed .nav-section-label,
.sidebar.collapsed .sidebar-user-info,
.sidebar.collapsed .sidebar-logout,
.sidebar.collapsed .system-status-text {
    opacity: 0;
    width: 0;
    overflow: hidden;
}

.sidebar.collapsed ~ .main-content {
    margin-left: var(--sidebar-w-collapsed);
}

.sidebar.collapsed .nav-link {
    justify-content: center;
    padding: 12px;
}

.sidebar.collapsed .nav-icon {
    width: 20px;
    height: 20px;
}

.sidebar.collapsed .school-selector-btn {
    justify-content: center;
    padding: 8px;
}

.sidebar.collapsed .sidebar-user {
    justify-content: center;
}

/* --- SCROLLBAR (global) ---------------------------------------------------- */

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-void); }
::-webkit-scrollbar-thumb { background: var(--border-strong); }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* --- SELECTION ------------------------------------------------------------- */

::selection {
    background: var(--accent-dim);
    color: var(--accent);
}