:root {
    /* Colors */
    --navy-deep: #0a192f;
    --navy-light: #172a45;
    --navy-lighter: #233554;
    --electric-blue: #64ffda;
    --electric-blue-dim: rgba(100, 255, 218, 0.1);
    --slate: #8892b0;
    --light-slate: #a8b2d1;
    --white: #ffffff;
    --light-gray: #f4f6f8;
    --border-color: #e2e8f0;

    /* Functional Colors */
    --primary-color: var(--navy-deep);
    --secondary-color: var(--navy-light);
    --accent-color: var(--electric-blue);
    --text-main: #333333;
    --text-muted: #64748b;
    --danger: #ef4444;
    --success: #10b981;
    --warning: #f59e0b;

    /* Layout */
    --sidebar-width: 260px;
    --topbar-height: 64px;

    /* Typography */
    --font-main: 'Inter', 'Roboto', 'Open Sans', sans-serif;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background-color: var(--light-gray);
    color: var(--text-main);
    margin: 0;
    line-height: 1.5;
}

/* =============================
   Login Pages
   ============================= */
body.login-page {
    background-color: var(--navy-deep);
    background-image:
        radial-gradient(circle at 10% 20%, rgba(100, 255, 218, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(100, 255, 218, 0.05) 0%, transparent 20%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    width: 100%;
    max-width: 400px;
    text-align: center;
    border-top: 4px solid var(--electric-blue);
    animation: fadeIn 0.5s ease-out;
}

.login-container h1 {
    color: var(--navy-deep);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.login-container p {
    color: var(--text-muted);
}

.logo-placeholder {
    width: 64px;
    height: 64px;
    background: var(--navy-deep);
    color: var(--electric-blue);
    border-radius: 12px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    font-weight: bold;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

/* =============================
   Dashboard Layout
   ============================= */
.dashboard-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--navy-deep);
    color: var(--slate);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    left: 0;
    top: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    height: var(--topbar-height);
    display: flex;
    align-items: center;
    padding: 0 1.5rem;
    border-bottom: 1px solid var(--navy-light);
}

.sidebar-brand {
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.5px;
}

.sidebar-brand span {
    color: var(--electric-blue);
}

.sidebar-menu {
    padding: 1.5rem 0;
    flex: 1;
}

.sidebar-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    color: var(--slate);
    text-decoration: none;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.sidebar-link:hover, .sidebar-link.active {
    color: var(--electric-blue);
    background-color: var(--navy-light);
}

.sidebar-link.active {
    border-left-color: var(--electric-blue);
}

.sidebar-icon {
    width: 20px;
    margin-right: 12px;
    text-align: center;
}

/* Main Content Area */
.main-wrapper {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    width: calc(100% - var(--sidebar-width));
}

.topbar {
    height: var(--topbar-height);
    background-color: var(--white);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
    position: sticky;
    top: 0;
    z-index: 90;
}

.breadcrumbs {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.dashboard-content {
    padding: 2rem;
    flex: 1;
}

/* =============================
   Components
   ============================= */

/* Cards */
.card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid var(--border-color);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Stats Cards */
.stat-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-info h3 {
    margin: 0;
    font-size: 2rem;
    font-weight: 700;
    color: var(--navy-deep);
}

.stat-info p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.blue { background: #e0f2fe; color: #0284c7; }
.stat-icon.green { background: #dcfce7; color: #16a34a; }
.stat-icon.purple { background: #f3e8ff; color: #9333ea; }
.stat-icon.orange { background: #ffedd5; color: #ea580c; }


/* Tables */
.table-responsive {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
}

.data-table th {
    background: #f8fafc;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
    position: sticky;
    top: 0;
}

.data-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
}

.data-table tr:hover {
    background-color: #f8fafc;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr:nth-child(even) {
    background-color: #fafafa;
}

/* Status Badges */
.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    display: inline-block;
}

.badge-success, .badge.active { background: #dcfce7; color: #16a34a; }
.badge-warning, .badge.pending { background: #fef3c7; color: #d97706; }
.badge-danger, .badge.suspended, .badge.rejected { background: #fee2e2; color: #dc2626; }
.badge-info { background: #e0f2fe; color: #0284c7; }

/* Forms */
.form-group {
    margin-bottom: 1.25rem;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--navy-deep);
    font-size: 0.9rem;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="tel"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-main);
    transition: all 0.2s;
    background: #f9fafb;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--navy-light);
    background: var(--white);
    box-shadow: 0 0 0 3px rgba(23, 42, 69, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    border: none;
    font-size: 0.95rem;
}

.btn-primary {
    background-color: var(--navy-deep);
    color: var(--electric-blue);
    border: 1px solid var(--navy-deep);
}

.btn-primary:hover {
    background-color: var(--navy-light);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--navy-deep);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: #f8fafc;
    border-color: var(--navy-deep);
}

.btn-small {
    padding: 0.35rem 0.75rem;
    font-size: 0.85rem;
    border-radius: 6px;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--electric-blue);
    color: var(--electric-blue);
}

.btn-solid {
    background: var(--electric-blue);
    color: var(--navy-deep);
    border: 1px solid var(--electric-blue);
}

/* Messages */
.error-message {
    background: #fee2e2;
    color: #991b1b;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid #fecaca;
}

.success-message {
    background: #dcfce7;
    color: #166534;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid #bbf7d0;
}

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

/* Utilities */
.text-right { text-align: right; }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-4 { margin-top: 2rem; }
.mb-4 { margin-bottom: 2rem; }

/* Navbar/Sidebar Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-wrapper {
        margin-left: 0;
        width: 100%;
    }
}