:root {
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --accent: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    --radius: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
}

/* Auth Pages */
.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    background: radial-gradient(circle at center, #1e293b 0%, #0f172a 100%);
}

.auth-card {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    width: 100%;
    max-width: 400px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.5s ease-out;
}

.auth-card h1 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    text-align: center;
    color: var(--primary);
}

.auth-card p {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: #0f172a;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-main);
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.btn {
    display: inline-block;
    width: 100%;
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    text-decoration: none;
}

.btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-success { background: var(--accent); }
.btn-success:hover { background: #059669; }

/* Dashboard Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
}

.sidebar-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 2rem;
    padding-left: 1rem;
}

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

.nav-item a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--text-muted);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    margin-bottom: 0.5rem;
}

.nav-item a:hover, .nav-item a.active {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary);
}

.main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

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

/* Dashboard Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.stat-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}

.stat-title {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
}

.stat-change {
    display: flex;
    align-items: center;
    margin-top: 0.5rem;
    font-size: 0.85rem;
}

.change-up { color: var(--accent); }
.change-down { color: var(--danger); }

/* Data Tables */
.table-container {
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    overflow: hidden;
    margin-bottom: 2rem;
}

.table-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-title {
    font-size: 1.2rem;
    font-weight: 600;
}

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

th, td {
    padding: 1rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: rgba(15, 23, 42, 0.5);
}

tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-warning { background: rgba(245, 158, 11, 0.1); color: var(--warning); border: 1px solid var(--warning); }
.badge-danger { background: rgba(239, 68, 68, 0.1); color: var(--danger); border: 1px solid var(--danger); }
.badge-success { background: rgba(16, 185, 129, 0.1); color: var(--accent); border: 1px solid var(--accent); }
.badge-primary { background: rgba(59, 130, 246, 0.1); color: var(--primary); border: 1px solid var(--primary); }

.potential-row td {
    color: var(--warning);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.upload-area {
    border: 2px dashed var(--border);
    padding: 3rem;
    text-align: center;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    transition: all 0.3s ease;
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(59, 130, 246, 0.05);
}

/* Premium Login Additions */
.login-body {
    background-color: #050b14;
    overflow: hidden;
    position: relative;
    font-family: 'Outfit', sans-serif;
}

.blob {
    position: absolute;
    filter: blur(80px);
    z-index: 0;
    opacity: 0.6;
    animation: float 10s infinite ease-in-out alternate;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: #3b82f6;
    top: -100px;
    left: -100px;
    border-radius: 50%;
}

.blob-2 {
    width: 300px;
    height: 300px;
    background: #10b981;
    bottom: -50px;
    right: -50px;
    border-radius: 50%;
    animation-delay: 2s;
}

.blob-3 {
    width: 250px;
    height: 250px;
    background: #8b5cf6;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border-radius: 50%;
    animation-delay: 4s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 50px) scale(1.1); }
}

.premium-glass {
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.1);
    z-index: 10;
    padding: 3rem;
}

.brand-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: 20px;
    margin: 0 auto 1.5rem;
    box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
}

.brand-logo .logo-icon {
    color: white;
}

.premium-glass h1 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 2rem;
    color: white;
    letter-spacing: -0.5px;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
}

.input-wrapper .form-control {
    padding-left: 3rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    height: 50px;
    font-size: 1rem;
}

.input-wrapper .form-control:focus {
    background: rgba(0, 0, 0, 0.4);
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.input-wrapper .form-control:focus + .input-icon {
    color: var(--primary);
}

.btn-glow {
    background: linear-gradient(135deg, var(--primary), #6366f1);
    height: 50px;
    font-size: 1.1rem;
    margin-top: 1rem;
    box-shadow: 0 10px 20px -10px rgba(99, 102, 241, 0.6);
}

.btn-glow:hover {
    box-shadow: 0 15px 25px -10px rgba(99, 102, 241, 0.8);
    transform: translateY(-2px);
}

.error-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}