@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-primary: #ffffff;
    --bg-secondary: #fafafa;
    --bg-dark: #000000;
    --text-primary: #000000;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #eeeeee;
    --accent: #000000;
    --sidebar-width: 260px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background-color: var(--bg-dark);
    color: #ffffff;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
}

.sidebar.collapsed {
    width: 70px;
}

.sidebar-logo {
    padding: 2rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    white-space: nowrap;
}

.sidebar.collapsed .sidebar-logo span {
    display: none;
}

.sidebar-nav {
    flex: 1;
    padding: 1.5rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0.75rem;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.sidebar.collapsed .nav-item {
    padding: 0.75rem;
    justify-content: center;
}

.sidebar.collapsed .nav-item span {
    display: none;
}

.nav-item:hover, .nav-item.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.nav-item.has-submenu svg:last-child {
    transition: transform 0.3s ease;
}

.nav-item.has-submenu.open svg:last-child,
.nav-item.has-submenu.active svg:last-child {
    transform: rotate(180deg);
}

.nav-submenu {
    padding-left: 2.5rem;
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    margin-top: 0.25rem;
    margin-bottom: 0.5rem;
}

.nav-item.has-submenu.active + .nav-submenu,
.nav-item.has-submenu.open + .nav-submenu {
    display: flex;
}

.nav-sub-item {
    padding: 0.5rem 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 0.8rem;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.nav-sub-item:hover, .nav-sub-item.active {
    color: #ffffff;
    background-color: rgba(255, 255, 255, 0.05);
}

.sidebar.collapsed .nav-submenu {
    display: none !important;
}

.nav-item svg {
    width: 18px;
    height: 18px;
    margin-right: 0.75rem;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 2rem 3rem;
    background-color: var(--bg-primary);
    transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar.collapsed + .main-content {
    margin-left: 70px;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
}

.page-title h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.page-title p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

.avatar {
    width: 36px;
    height: 36px;
    background-color: var(--bg-dark);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
}

/* Components */
.card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.card-header {
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
}

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

.stat-card {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.stat-trend {
    font-size: 0.75rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
}

.trend-up { color: #10b981; }
.trend-down { color: #ef4444; }

/* Table */
table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 1rem;
    font-size: 0.875rem;
    border-bottom: 1px solid var(--border-color);
}

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

.badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-dark {
    background-color: var(--bg-dark);
    color: #ffffff;
}

.badge-outline {
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

/* Forms */
.btn {
    padding: 0.625rem 1.25rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--bg-dark);
    color: #ffffff;
}

.btn-primary:hover {
    background-color: #333333;
}

.btn-secondary {
    background-color: #ffffff;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background-color: var(--bg-secondary);
}

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

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.875rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--bg-dark);
}

/* Login Page */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-secondary);
    padding: 2rem;
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.login-logo {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.login-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

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

.fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

/* Pagination */
.pagination-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.pagination-info {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.pagination-links {
    display: flex;
    gap: 0.5rem;
}

.pagination-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: #ffffff;
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}

.pagination-item:hover:not(.disabled):not(.active) {
    background-color: var(--bg-secondary);
    border-color: var(--text-primary);
}

.pagination-item.active {
    background-color: var(--bg-dark);
    color: #ffffff;
    border-color: var(--bg-dark);
}

.pagination-item.disabled {
    color: var(--text-muted);
    cursor: not-allowed;
    background-color: var(--bg-secondary);
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: #ffffff;
    border-radius: 16px;
    width: 100%;
    max-width: 500px;
    padding: 2rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    position: relative;
    animation: fadeIn 0.3s ease-out;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
}

.modal-close {
    cursor: pointer;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
}

.search-results {
    border: 1px solid var(--border-color);
    border-radius: 6px;
    margin-top: 0.5rem;
    max-height: 200px;
    overflow-y: auto;
    display: none;
}

.search-item {
    padding: 0.75rem;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.875rem;
}

.search-item:last-child {
    border-bottom: none;
}

.search-item:hover {
    background-color: var(--bg-secondary);
}

.current-upline-box {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.current-upline-box label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

/* Profile Dropdown */
.user-profile-wrapper {
    position: relative;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background 0.2s;
}

.user-profile:hover {
    background: var(--bg-secondary);
}

.profile-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    width: 200px;
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    display: none;
    flex-direction: column;
    padding: 0.5rem;
    z-index: 1000;
    animation: fadeIn 0.2s ease-out;
}

.profile-dropdown.show {
    display: flex;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    border-radius: 6px;
    transition: all 0.2s;
    cursor: pointer;
}

.dropdown-item:hover {
    background: var(--bg-secondary);
}

.dropdown-item svg {
    color: var(--text-secondary);
}