:root {
    /* Core Palette */
    --bg-dark: #060811;
    --bg-card: rgba(14, 18, 28, 0.6);
    --bg-sidebar: rgba(8, 11, 20, 0.92);
    --primary: #00d4ff;
    --primary-rgb: 0, 212, 255;
    --primary-glow: rgba(0, 212, 255, 0.35);
    --primary-dark: #0099bb;
    --secondary: #7c3aed;
    --secondary-rgb: 124, 58, 237;
    --accent: #a855f7;
    --text-main: #e8edf5;
    --text-muted: #7a8394;
    --text-dim: #4a5568;
    --border: rgba(255, 255, 255, 0.05);
    --border-light: rgba(255, 255, 255, 0.09);
    --border-hover: rgba(255, 255, 255, 0.18);
    --success: #10b981;
    --success-rgb: 16, 185, 129;
    --danger: #ef4444;
    --danger-rgb: 239, 68, 68;
    --warning: #f59e0b;
    --warning-rgb: 245, 158, 11;
    --sidebar-width: 260px;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --transition: all 0.25s cubic-bezier(0.25, 1, 0.5, 1);
    --shadow-card: 0 4px 32px rgba(0,0,0,0.35), 0 1px 0 rgba(255,255,255,0.04) inset;
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.12);
    --shadow-hover: 0 16px 48px rgba(0,0,0,0.6), 0 0 24px rgba(0,212,255,0.08);
}

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

/* ═══════════════════════════════════
   BODY + ANIMATED BACKGROUND
═══════════════════════════════════ */
body {
    font-family:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
    background-color: var(--bg-dark);
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -10%, rgba(0,212,255,0.07) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 90% 80%, rgba(124,58,237,0.06) 0%, transparent 55%),
        radial-gradient(ellipse 40% 60% at 10% 90%, rgba(0,212,255,0.04) 0%, transparent 50%);
    color: var(--text-main);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Animated grid overlay */
body::before {
    content:'';
    position:fixed;
    inset:0;
    background-image:
        linear-gradient(rgba(0,212,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,212,255,0.025) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events:none;
    z-index:0;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 30%, transparent 80%);
}

/* ═══════════════════════════════════
   SCROLLBAR
═══════════════════════════════════ */
::-webkit-scrollbar{width:5px;height:5px;}
::-webkit-scrollbar-track{background:transparent;}
::-webkit-scrollbar-thumb{background:rgba(0,212,255,0.2);border-radius:10px;}
::-webkit-scrollbar-thumb:hover{background:rgba(0,212,255,0.4);}

/* ═══════════════════════════════════
   ANIMATIONS
═══════════════════════════════════ */
@keyframes fadeUp {
    from{opacity:0;transform:translateY(16px);}
    to{opacity:1;transform:translateY(0);}
}
@keyframes fadeIn {
    from{opacity:0;} to{opacity:1;}
}
@keyframes pulse-dot {
    0%,100%{transform:scale(1);opacity:1;}
    50%{transform:scale(1.4);opacity:0.7;}
}
@keyframes shimmer {
    0%{background-position:-200% 0;}
    100%{background-position:200% 0;}
}
@keyframes toastIn {
    from{opacity:0;transform:translateX(100%);}
    to{opacity:1;transform:translateX(0);}
}
@keyframes toastOut {
    from{opacity:1;transform:translateX(0);}
    to{opacity:0;transform:translateX(110%);}
}
@keyframes spin {
    to{transform:rotate(360deg);}
}
@keyframes countUp {
    from{opacity:0;transform:scale(0.8);}
    to{opacity:1;transform:scale(1);}
}

.fade-in{animation:fadeUp 0.5s cubic-bezier(0.16,1,0.3,1) both;}

/* ═══════════════════════════════════
   LAYOUT
═══════════════════════════════════ */
.app-shell{display:flex;min-height:100vh;position:relative;}

/* ═══════════════════════════════════
   SIDEBAR
═══════════════════════════════════ */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 1000;
    transition: transform 0.4s cubic-bezier(0.16,1,0.3,1);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    box-shadow: 4px 0 32px rgba(0,0,0,0.5);
}

/* Sidebar top glow accent */
.sidebar::before {
    content:'';
    position:absolute;
    top:0;left:0;right:0;
    height:2px;
    background:linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
    opacity:0.7;
}

.sidebar-header {
    padding: 28px 24px 20px;
    border-bottom: 1px solid var(--border);
}

.sidebar-logo {
    font-size: 22px;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, #fff 0%, var(--primary) 60%, var(--accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-logo::before {
    content: '⚡';
    font-size: 20px;
    -webkit-text-fill-color: var(--primary);
    filter: drop-shadow(0 0 8px var(--primary));
}

.sidebar-nav {
    flex: 1;
    padding: 12px;
    overflow-y: auto;
    scrollbar-width: none;
}
.sidebar-nav::-webkit-scrollbar{display:none;}

.nav-item {
    display:flex;
    align-items:center;
    gap:10px;
    padding:11px 14px;
    color:var(--text-muted);
    text-decoration:none;
    border-radius:var(--radius-sm);
    margin-bottom:3px;
    transition:var(--transition);
    font-size:13.5px;
    font-weight:500;
    position:relative;
    overflow:hidden;
    border:1px solid transparent;
}

.nav-item:hover {
    color:#fff;
    background:rgba(255,255,255,0.04);
    border-color:var(--border);
    transform:translateX(2px);
}

.nav-item.active {
    background:linear-gradient(135deg, rgba(0,212,255,0.12), rgba(0,212,255,0.04));
    color:var(--primary);
    border-color:rgba(0,212,255,0.2);
    box-shadow:inset 0 0 20px rgba(0,212,255,0.04), 0 0 0 0 transparent;
    font-weight:600;
}

/* Left accent on active */
.nav-item.active::before {
    content:'';
    position:absolute;
    left:0;top:4px;bottom:4px;
    width:3px;
    background:linear-gradient(to bottom, var(--primary), var(--accent));
    border-radius:0 3px 3px 0;
}

.sidebar-footer {
    padding:12px;
    border-top:1px solid var(--border);
}

/* ═══════════════════════════════════
   MAIN CONTENT
═══════════════════════════════════ */
.main-content {
    flex:1;
    margin-left:var(--sidebar-width);
    padding:36px 40px;
    transition:var(--transition);
    width:calc(100% - var(--sidebar-width));
    position:relative;
    z-index:1;
}

/* ═══════════════════════════════════
   TOP TOOLBAR
═══════════════════════════════════ */
.top-toolbar {
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:36px;
    padding-bottom:28px;
    border-bottom:1px solid var(--border);
}

.page-title h1 {
    font-size:26px;
    font-weight:700;
    letter-spacing:-0.6px;
    margin-bottom:4px;
    background:linear-gradient(90deg, var(--text-main) 60%, var(--primary));
    -webkit-background-clip:text;
    background-clip:text;
    -webkit-text-fill-color:transparent;
}

.page-title p {
    color:var(--text-muted);
    font-size:14px;
}

/* ═══════════════════════════════════
   STAT CARDS (Glassmorphism)
═══════════════════════════════════ */
.card-grid {
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
    gap:18px;
    margin-bottom:28px;
}

.stat-card {
    background:var(--bg-card);
    border:1px solid var(--border-light);
    border-radius:var(--radius-lg);
    padding:24px;
    transition:var(--transition);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    position:relative;
    overflow:hidden;
    box-shadow:var(--shadow-card);
    animation:fadeUp 0.5s cubic-bezier(0.16,1,0.3,1) both;
}

/* Top shine line */
.stat-card::after {
    content:'';
    position:absolute;
    top:0;left:0;right:0;
    height:1px;
    background:linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.12) 50%, transparent 100%);
}

/* Subtle noise texture */
.stat-card::before {
    content:'';
    position:absolute;
    inset:0;
    background:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
    opacity:0.4;
    pointer-events:none;
    border-radius:inherit;
}

.stat-card:hover {
    border-color:rgba(255,255,255,0.14);
    transform:translateY(-5px);
    box-shadow:var(--shadow-hover);
}

.stat-label {
    color:var(--text-muted);
    font-size:11px;
    text-transform:uppercase;
    letter-spacing:0.08em;
    font-weight:600;
    margin-bottom:14px;
    display:flex;
    align-items:center;
    gap:8px;
}

.stat-value {
    font-size:36px;
    font-weight:800;
    color:var(--text-main);
    letter-spacing:-1.5px;
    line-height:1;
    animation:countUp 0.6s cubic-bezier(0.16,1,0.3,1) both;
}

.stat-trend {
    font-size:12px;
    margin-top:10px;
    display:flex;
    align-items:center;
    gap:4px;
    color:var(--text-muted);
}

/* Online pulse dot */
.pulse-dot {
    display:inline-block;
    width:8px;
    height:8px;
    border-radius:50%;
    background:var(--success);
    box-shadow:0 0 0 0 rgba(16,185,129,0.4);
    animation:pulse-dot 2s infinite;
}

.pulse-dot.offline {
    background:var(--text-dim);
    animation:none;
    box-shadow:none;
}

/* ═══════════════════════════════════
   TABLES
═══════════════════════════════════ */
.table-container {
    background:var(--bg-card);
    border:1px solid var(--border-light);
    border-radius:var(--radius-lg);
    overflow:hidden;
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    box-shadow:var(--shadow-card);
    position:relative;
}

.table-container::after {
    content:'';
    position:absolute;
    top:0;left:0;right:0;
    height:1px;
    background:linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    pointer-events:none;
}

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

th {
    background:rgba(0,0,0,0.25);
    padding:14px 20px;
    text-align:left;
    font-size:11px;
    text-transform:uppercase;
    font-weight:700;
    letter-spacing:0.07em;
    color:var(--text-muted);
    border-bottom:1px solid var(--border);
    white-space:nowrap;
}

td {
    padding:14px 20px;
    border-bottom:1px solid var(--border);
    font-size:13.5px;
    color:#c0c8d8;
    vertical-align:middle;
    white-space:nowrap;
}

tr:last-child td{border-bottom:none;}
tr{transition:var(--transition);}
tr:hover td {
    background:rgba(0,212,255,0.03);
    color:var(--text-main);
}

/* Staggered table rows entry */
tbody tr {
    animation:fadeUp 0.4s both;
}
tbody tr:nth-child(1){animation-delay:0.05s;}
tbody tr:nth-child(2){animation-delay:0.10s;}
tbody tr:nth-child(3){animation-delay:0.15s;}
tbody tr:nth-child(4){animation-delay:0.20s;}
tbody tr:nth-child(5){animation-delay:0.25s;}
tbody tr:nth-child(6){animation-delay:0.30s;}
tbody tr:nth-child(7){animation-delay:0.35s;}
tbody tr:nth-child(8){animation-delay:0.40s;}

/* ═══════════════════════════════════
   BADGES
═══════════════════════════════════ */
.badge {
    padding:4px 11px;
    border-radius:20px;
    font-size:11px;
    font-weight:700;
    display:inline-flex;
    align-items:center;
    gap:5px;
    letter-spacing:0.03em;
    white-space:nowrap;
}

.badge-success {
    background:rgba(16,185,129,0.1);
    color:#10b981;
    border:1px solid rgba(16,185,129,0.25);
    box-shadow:0 0 12px rgba(16,185,129,0.08);
}

.badge-danger {
    background:rgba(239,68,68,0.1);
    color:#ef4444;
    border:1px solid rgba(239,68,68,0.25);
    box-shadow:0 0 12px rgba(239,68,68,0.08);
}

.badge-warning {
    background:rgba(245,158,11,0.1);
    color:#f59e0b;
    border:1px solid rgba(245,158,11,0.25);
    box-shadow:0 0 12px rgba(245,158,11,0.08);
}

.badge-primary {
    background:rgba(0,212,255,0.1);
    color:var(--primary);
    border:1px solid rgba(0,212,255,0.2);
    box-shadow:0 0 12px rgba(0,212,255,0.08);
}

/* ═══════════════════════════════════
   FORMS
═══════════════════════════════════ */
input, select, textarea {
    background:rgba(255,255,255,0.04);
    border:1px solid var(--border-light);
    border-radius:var(--radius-sm);
    color:var(--text-main);
    padding:11px 14px;
    font-size:14px;
    width:100%;
    transition:var(--transition);
    font-family:'Inter',sans-serif;
}

input::placeholder,textarea::placeholder{color:var(--text-dim);}

input:hover, select:hover, textarea:hover {
    border-color:var(--border-hover);
    background:rgba(255,255,255,0.06);
}

input:focus, select:focus, textarea:focus {
    outline:none;
    border-color:var(--primary);
    background:rgba(0,212,255,0.04);
    box-shadow:0 0 0 3px rgba(0,212,255,0.12);
}

select option{background:#0e1220;color:#fff;}

label {
    font-size:11.5px;
    font-weight:600;
    color:var(--text-muted);
    text-transform:uppercase;
    letter-spacing:0.06em;
    display:block;
    margin-bottom:8px;
}

/* ═══════════════════════════════════
   BUTTONS
═══════════════════════════════════ */
.btn {
    padding:10px 20px;
    border-radius:var(--radius-sm);
    font-weight:600;
    font-size:13.5px;
    cursor:pointer;
    transition:var(--transition);
    border:1px solid transparent;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    text-decoration:none;
    position:relative;
    overflow:hidden;
    font-family:'Inter',sans-serif;
}

/* Shimmer hover on primary button */
.btn-primary {
    background:linear-gradient(135deg, var(--primary), #0099cd);
    color:#000;
    font-weight:700;
    box-shadow:0 0 20px rgba(0,212,255,0.3), 0 4px 12px rgba(0,0,0,0.3);
    border:none;
}

.btn-primary::after {
    content:'';
    position:absolute;
    top:0;left:-100%;
    width:100%;height:100%;
    background:linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition:left 0.4s ease;
}

.btn-primary:hover {
    transform:translateY(-2px);
    box-shadow:0 0 32px rgba(0,212,255,0.45), 0 6px 20px rgba(0,0,0,0.4);
}

.btn-primary:hover::after{left:100%;}

.btn-primary:active{transform:translateY(0);}

.btn-outline {
    background:transparent;
    color:var(--text-main);
    border:1px solid var(--border-light);
}

.btn-outline:hover {
    background:rgba(255,255,255,0.05);
    border-color:var(--border-hover);
}

.btn:disabled {
    opacity:0.5;
    cursor:not-allowed;
    transform:none !important;
}

/* ═══════════════════════════════════
   SPINNER (inside buttons)
═══════════════════════════════════ */
.spinner {
    display:inline-block;
    width:14px;height:14px;
    border:2px solid rgba(0,0,0,0.2);
    border-top-color:#000;
    border-radius:50%;
    animation:spin 0.6s linear infinite;
    vertical-align:middle;
}

/* ═══════════════════════════════════
   SKELETON LOADER
═══════════════════════════════════ */
.skeleton {
    background:linear-gradient(90deg,
        rgba(255,255,255,0.04) 25%,
        rgba(255,255,255,0.09) 50%,
        rgba(255,255,255,0.04) 75%);
    background-size:200% 100%;
    animation:shimmer 1.6s infinite;
    border-radius:6px;
    display:block;
}

/* ═══════════════════════════════════
   TOAST NOTIFICATIONS
═══════════════════════════════════ */
#toast-container {
    position:fixed;
    bottom:24px;
    right:24px;
    z-index:9999;
    display:flex;
    flex-direction:column;
    gap:10px;
    pointer-events:none;
}

.toast {
    background:rgba(14,18,28,0.95);
    border:1px solid var(--border-light);
    border-radius:var(--radius-md);
    padding:14px 18px;
    display:flex;
    align-items:center;
    gap:12px;
    min-width:300px;
    max-width:380px;
    color:var(--text-main);
    font-size:13.5px;
    font-weight:500;
    backdrop-filter:blur(20px);
    box-shadow:0 8px 32px rgba(0,0,0,0.5);
    animation:toastIn 0.35s cubic-bezier(0.16,1,0.3,1) both;
    pointer-events:all;
    position:relative;
    overflow:hidden;
}

.toast::before {
    content:'';
    position:absolute;
    left:0;top:0;bottom:0;
    width:3px;
    border-radius:3px 0 0 3px;
}

.toast.success::before{background:var(--success);}
.toast.error::before{background:var(--danger);}
.toast.warning::before{background:var(--warning);}
.toast.info::before{background:var(--primary);}

.toast-icon{font-size:18px;flex-shrink:0;}
.toast-msg{flex:1;line-height:1.4;}
.toast-close{
    background:none;border:none;color:var(--text-muted);
    cursor:pointer;font-size:18px;padding:0 2px;
    transition:color 0.2s;pointer-events:all;
    flex-shrink:0;
}
.toast-close:hover{color:#fff;}

/* Progress bar */
.toast-progress {
    position:absolute;
    bottom:0;left:0;right:0;
    height:2px;
    border-radius:0 0 var(--radius-md) var(--radius-md);
    transform-origin:left;
}

.toast.success .toast-progress{background:var(--success);}
.toast.error .toast-progress{background:var(--danger);}
.toast.warning .toast-progress{background:var(--warning);}
.toast.info .toast-progress{background:var(--primary);}

.toast.removing{animation:toastOut 0.3s ease forwards;}

/* ═══════════════════════════════════
   MOBILE NAV TOGGLE
═══════════════════════════════════ */
.mobile-nav-toggle {
    display:none;
    background:rgba(14,18,28,0.9);
    border:1px solid var(--border-light);
    color:var(--text-main);
    font-size:20px;
    padding:8px 12px;
    border-radius:var(--radius-sm);
    cursor:pointer;
    z-index:1001;
    position:fixed;
    top:16px;right:16px;
    backdrop-filter:blur(12px);
    transition:var(--transition);
}

.sidebar-overlay {
    display:none;
    position:fixed;inset:0;
    background:rgba(0,0,0,0.65);
    backdrop-filter:blur(6px);
    z-index:999;
}

/* ═══════════════════════════════════
   SECTION HEADER inside cards
═══════════════════════════════════ */
.section-header {
    display:flex;
    justify-content:space-between;
    align-items:center;
    padding:18px 22px;
    border-bottom:1px solid var(--border);
}

.section-header h2 {
    font-size:15px;
    font-weight:700;
    letter-spacing:-0.2px;
}

/* ═══════════════════════════════════
   CHART SECTION
═══════════════════════════════════ */
.chart-wrapper {
    padding:24px;
    height:220px;
    position:relative;
}

/* ═══════════════════════════════════
   RESPONSIVE
═══════════════════════════════════ */
@media(max-width:1024px){
    .card-grid{grid-template-columns:repeat(auto-fit,minmax(190px,1fr));}
}

@media(max-width:768px){
    .mobile-nav-toggle{display:block;}
    .sidebar{transform:translateX(-100%);box-shadow:20px 0 60px rgba(0,0,0,0.6);}
    .sidebar.open{transform:translateX(0);}
    .sidebar-overlay.active{display:block;}
    .main-content{margin-left:0;width:100%;padding:72px 16px 24px;}
    .top-toolbar{flex-direction:column;align-items:flex-start;gap:14px;margin-bottom:24px;}
    .card-grid{grid-template-columns:repeat(2,1fr);gap:12px;}
    .stat-card{padding:18px;}
    td,th{padding:12px 14px;}
    .table-container{overflow-x:auto;}
}

@media(max-width:480px){
    .card-grid{grid-template-columns:1fr;}
}

/* ═══════════════════════════════════════
   MODAL OVERLAY
═══════════════════════════════════════ */
.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
    animation: modalFadeIn 0.2s ease;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.modal-content {
    background: linear-gradient(145deg, rgba(18, 22, 38, 0.98), rgba(10, 14, 26, 0.98));
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 32px;
    width: 100%;
    max-width: 520px;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6), 0 1px 0 rgba(255,255,255,0.04) inset;
    animation: modalSlideUp 0.25s cubic-bezier(0.25, 1, 0.5, 1);
}

@keyframes modalSlideUp {
    from { transform: translateY(24px); opacity: 0; }
    to   { transform: translateY(0);    opacity: 1; }
}

.modal-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 6px;
}

.modal-subtitle {
    font-size: 13px;
    color: var(--text-muted);
}

.modal-content textarea {
    width: 100%;
    min-height: 120px;
    background: rgba(255,255,255,0.04);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-main);
    padding: 14px 16px;
    font-family: inherit;
    font-size: 14px;
    resize: vertical;
    transition: border-color 0.2s;
    outline: none;
}

.modal-content textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(var(--primary-rgb), 0.08);
}