:root {
    --bg-color: #0a0d1a;
    --bg-gradient: linear-gradient(135deg, #0a0d1a 0%, #0c0f1d 100%);
    --card-bg: rgba(255, 255, 255, 0.08);
    --card-bg-hover: rgba(255, 255, 255, 0.12);
    --glass-border: rgba(255, 255, 255, 0.15);
    --primary: #6366f1;
    --primary-hover: #7c3aed;
    --primary-glow: rgba(99, 102, 241, 0.5);
    --accent: #22d3ee;
    --accent-glow: rgba(34, 211, 238, 0.4);
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --sidebar-w: 260px;
    --radius-sm: 12px;
    --radius-md: 16px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
}

.glass-bg {
    position: fixed;
    top: -10%;
    left: -10%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
    z-index: -1;
    filter: blur(100px);
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-w);
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    padding: 2rem;
    display: flex;
    flex-direction: column;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 3rem;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

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

.sidebar nav li {
    margin-bottom: 0.5rem;
}

.sidebar nav a {
    display: block;
    padding: 0.875rem 1.125rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.9375rem;
    position: relative;
}

.sidebar nav a::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: linear-gradient(180deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: 0 2px 2px 0;
    transition: var(--transition);
}

.sidebar nav li.active a,
.sidebar nav a:hover {
    background: var(--card-bg);
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
}

.sidebar nav li.active a::before,
.sidebar nav a:hover::before {
    height: 60%;
}

.sidebar-footer {
    margin-top: auto;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    }

    70% {
        box-shadow: 0 0 0 10px rgba(16, 185, 129, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

/* Login Screen */
.login-container {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 10;
}

.login-box {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    padding: 3rem;
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 420px;
    text-align: center;
    box-shadow: var(--shadow-lg), 0 0 60px var(--primary-glow);
    position: relative;
}

.login-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.login-box h2 {
    font-size: 1.875rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--text-main) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-box p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

#login-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

#login-form input {
    background: rgba(255, 255, 255, 0.08);
    border: 1.5px solid var(--glass-border);
    padding: 1.125rem;
    border-radius: var(--radius-sm);
    color: white;
    text-align: center;
    font-size: 1.125rem;
    letter-spacing: 2px;
    outline: none;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

#login-form input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background: rgba(255, 255, 255, 0.12);
}

.error-msg {
    color: #ef4444;
    margin-top: 1rem;
    font-size: 0.875rem;
}

/* Sidebar Utilities */
.btn-logout {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 0.75rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    border-radius: 10px;
    transition: all 0.2s;
    margin-top: 1rem;
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* Table loading */

/* Main Content */
.content {
    flex: 1;
    padding: 2rem 3rem;
}

.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
}

.search-container input {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    padding: 0.75rem 1.5rem;
    padding-left: 2.5rem;
    border-radius: 100px;
    color: white;
    width: 400px;
    outline: none;
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.search-container input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
    background: var(--card-bg-hover);
}

.search-container input::placeholder {
    color: var(--text-dim);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.avatar {
    width: 40px;
    height: 40px;
    background: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Views */
.dashboard-view {
    display: none;
    animation: fadeIn 0.4s ease;
}

.dashboard-view.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Stats */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    position: relative;
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    padding: 1.75rem;
    border-radius: var(--radius-lg);
    transition: var(--transition);
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    opacity: 0;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-5px);
    background: var(--card-bg-hover);
    box-shadow: var(--shadow-lg), 0 0 40px var(--primary-glow);
    border-color: var(--primary);
}

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

.stat-label {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

.stat-card h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--text-main) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-trend {
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.positive {
    color: var(--success);
}

.positive::before {
    content: '↑';
}

.negative {
    color: var(--danger);
}

.negative::before {
    content: '↓';
}

/* Data Section */
.data-section {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: 2rem;
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    font-size: 1.5rem;
}

.btn {
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: white;
    box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--primary-glow);
}

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

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

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

.data-table th {
    text-align: left;
    padding: 1rem 1.25rem;
    color: var(--text-dim);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--glass-border);
    background: rgba(0, 0, 0, 0.2);
}

.data-table td {
    padding: 1rem 1.25rem;
    font-size: 0.9375rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

.status-badge {
    padding: 0.375rem 0.875rem;
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
}


.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

/* Filters */
.filters-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.filter-select {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    padding: 0.625rem 1.125rem;
    border-radius: var(--radius-sm);
    color: white;
    outline: none;
    cursor: pointer;
    transition: var(--transition);
    min-width: 160px;
    font-size: 0.875rem;
    backdrop-filter: blur(10px);
}

.filter-select:hover {
    background: var(--card-bg-hover);
    border-color: var(--primary);
}

.filter-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--glass-border);
    color: var(--text-main);
}

.btn-outline:hover {
    background: var(--card-bg);
    border-color: var(--primary);
    box-shadow: 0 0 20px var(--primary-glow);
    transform: translateY(-2px);
}


/* Responsive Layouts */
.mobile-header {
    display: none;
    padding: 1rem 1.5rem;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.mobile-header .logo {
    margin-bottom: 0;
}

.menu-toggle {
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 1000;
}

@media (max-width: 1024px) {
    :root {
        --sidebar-w: 80px;
    }

    .sidebar {
        padding: 1.5rem 1rem;
    }

    .sidebar h1,
    .sidebar nav a span,
    .sidebar .status-indicator span {
        display: none;
    }

    .sidebar .logo {
        justify-content: center;
    }

    .sidebar nav a {
        text-align: center;
        font-size: 1.25rem;
    }

    .search-container input {
        width: 300px;
    }
}

@media (max-width: 768px) {
    .mobile-header {
        display: flex;
    }

    .app-container {
        flex-direction: column;
    }

    .sidebar {
        position: fixed;
        left: -100%;
        top: 0;
        bottom: 0;
        z-index: 1001;
        width: 280px;
        transition: left 0.3s ease;
        background: var(--bg-color);
    }

    .sidebar.open {
        left: 0;
    }

    .sidebar h1,
    .sidebar nav a span,
    .sidebar .status-indicator span {
        display: inline;
    }

    .sidebar .logo {
        justify-content: flex-start;
    }

    .sidebar nav a {
        text-align: left;
        font-size: 1rem;
    }

    .sidebar-overlay.active {
        display: block;
    }

    .content {
        padding: 1.5rem;
    }

    .top-bar {
        flex-direction: column-reverse;
        align-items: flex-start;
        gap: 1.5rem;
        margin-bottom: 2rem;
    }

    .search-container {
        width: 100%;
    }

    .search-container input {
        width: 100%;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .data-section {
        padding: 1rem;
    }
}