/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #25D366;
    --primary-dark: #1faa52;
    --secondary: #128C7E;
    --success: #10B981;
    --danger: #EF4444;
    --warning: #F59E0B;
    --info: #3B82F6;
    --dark: #1F2937;
    --gray: #6B7280;
    --light-gray: #F3F4F6;
    --white: #FFFFFF;
    --border: #E5E7EB;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--dark);
    background: var(--light-gray);
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.login-header {
    text-align: center;
    padding: 40px 30px 30px;
    background: linear-gradient(to bottom, #f9fafb, var(--white));
}

.logo {
    margin-bottom: 20px;
}

.login-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.login-header p {
    color: var(--gray);
    font-size: 14px;
}

.login-form {
    padding: 0 30px 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--dark);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 14px;
    transition: all 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.1);
}

.form-alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.form-alert.error {
    background: #FEE2E2;
    color: var(--danger);
    border: 1px solid #FECACA;
}

.form-alert.success {
    background: #D1FAE5;
    color: var(--success);
    border: 1px solid #A7F3D0;
}

.login-footer {
    padding: 20px;
    text-align: center;
    background: var(--light-gray);
    color: var(--gray);
    font-size: 13px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-dark);
}

.btn-success {
    background: var(--success);
    color: var(--white);
}

.btn-success:hover:not(:disabled) {
    background: #059669;
}

.btn-danger {
    background: var(--danger);
    color: var(--white);
}

.btn-danger:hover:not(:disabled) {
    background: #DC2626;
}

.btn-warning {
    background: var(--warning);
    color: var(--white);
}

.btn-info {
    background: var(--info);
    color: var(--white);
}

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

.btn-outline:hover {
    background: var(--light-gray);
}

.btn-block {
    width: 100%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Spinner */
.spinner {
    animation: rotate 1s linear infinite;
    width: 20px;
    height: 20px;
}

.spinner circle {
    stroke: currentColor;
    stroke-dasharray: 90, 150;
    stroke-dashoffset: 0;
    stroke-linecap: round;
    animation: dash 1.5s ease-in-out infinite;
}

@keyframes rotate {
    100% { transform: rotate(360deg); }
}

@keyframes dash {
    0% { stroke-dasharray: 1, 150; stroke-dashoffset: 0; }
    50% { stroke-dasharray: 90, 150; stroke-dashoffset: -35; }
    100% { stroke-dasharray: 90, 150; stroke-dashoffset: -124; }
}

/* Dashboard Layout */
body:not(.login-page) {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    width: 260px;
    background: var(--white);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

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

.logo-small {
    margin-bottom: 12px;
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 700;
}

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--gray);
    text-decoration: none;
    transition: all 0.2s;
}

.nav-item:hover {
    background: var(--light-gray);
    color: var(--dark);
}

.nav-item.active {
    background: rgba(37, 211, 102, 0.1);
    color: var(--primary);
    border-right: 3px solid var(--primary);
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.top-bar {
    background: var(--white);
    padding: 20px 30px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.top-bar h1 {
    font-size: 24px;
    font-weight: 700;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.page-content {
    flex: 1;
    overflow-y: auto;
    padding: 30px;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.card-body {
    padding: 24px;
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    padding: 24px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 20px;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.stat-icon.bg-primary { background: var(--primary); }
.stat-icon.bg-success { background: var(--success); }
.stat-icon.bg-info { background: var(--info); }
.stat-icon.bg-warning { background: var(--warning); }

.stat-info h3 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 4px;
}

.stat-info p {
    color: var(--gray);
    font-size: 14px;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
}

/* Activity List */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.activity-item {
    display: flex;
    align-items: start;
    gap: 12px;
    padding: 12px;
    background: var(--light-gray);
    border-radius: 8px;
}

.activity-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.activity-info {
    flex: 1;
}

.activity-info strong {
    display: block;
    margin-bottom: 4px;
}

.activity-time {
    font-size: 12px;
    color: var(--gray);
}

/* Table */
.table-responsive {
    overflow-x: auto;
}

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

.table th,
.table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    font-weight: 600;
    color: var(--gray);
    font-size: 12px;
    text-transform: uppercase;
}

.table tbody tr:hover {
    background: var(--light-gray);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success {
    background: #D1FAE5;
    color: var(--success);
}

.badge-danger {
    background: #FEE2E2;
    color: var(--danger);
}

.badge-warning {
    background: #FEF3C7;
    color: #D97706;
}

.badge-info {
    background: #DBEAFE;
    color: var(--info);
}

.badge-primary {
    background: rgba(37, 211, 102, 0.15);
    color: var(--primary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--gray);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
}

.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* Input Group */
.input-group {
    display: flex;
    gap: 8px;
}

.input-group input {
    flex: 1;
}

/* Utilities */
.text-center { text-align: center; }
.text-muted { color: var(--gray); }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.mt-4 { margin-top: 16px; }

/* Docs */
.docs-content h3 {
    margin-top: 24px;
    margin-bottom: 12px;
    font-size: 18px;
}

.docs-content h4 {
    margin-top: 16px;
    margin-bottom: 8px;
    font-size: 16px;
}

.docs-content pre {
    background: var(--dark);
    color: #D1FAE5;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 12px 0;
}

.docs-content code {
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

.endpoint {
    padding: 16px;
    background: var(--light-gray);
    border-radius: 8px;
    margin: 16px 0;
}

/* Groups Grid */
.groups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 20px;
}

.group-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 16px;
    box-shadow: var(--shadow);
}

.group-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.group-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.group-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.group-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
}

.group-description {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.5;
}

.btn-icon {
    background: none;
    border: none;
    color: var(--gray);
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.btn-icon:hover {
    background: var(--light-gray);
    color: var(--dark);
}

.group-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.metric {
    text-align: center;
    padding: 12px;
    background: var(--light-gray);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.metric-label {
    font-size: 12px;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
}

.metric-value.text-success {
    color: var(--success);
}

.metric-value.text-warning {
    color: var(--warning);
}

.group-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.btn-small {
    padding: 8px 12px;
    font-size: 12px;
    flex: 1;
    min-width: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

/* Responsive */
@media (max-width: 1024px) {
    .page-content {
        padding: 20px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px;
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

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

@media (max-width: 768px) {
    body:not(.login-page) {
        height: 100dvh;
        display: block;
        overflow: hidden;
    }

    .sidebar {
        position: fixed;
        left: 0;
        right: 0;
        bottom: 0;
        top: auto;
        width: 100%;
        height: calc(76px + env(safe-area-inset-bottom));
        border-right: none;
        border-top: 1px solid var(--border);
        z-index: 1200;
        overflow: visible;
    }

    .sidebar-header,
    .sidebar-footer {
        display: none;
    }

    .sidebar-nav {
        padding: 0;
        display: grid;
        grid-template-columns: repeat(5, minmax(0, 1fr));
        height: 100%;
        align-items: stretch;
    }

    .nav-item {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 4px;
        padding: 8px 4px calc(8px + env(safe-area-inset-bottom));
        font-size: 11px;
        text-align: center;
        border-right: none;
    }

    .nav-item svg {
        width: 18px;
        height: 18px;
    }

    .nav-item.active {
        border-right: none;
        border-top: 3px solid var(--primary);
    }

    .main-content {
        height: 100dvh;
        padding-bottom: calc(76px + env(safe-area-inset-bottom));
    }

    .top-bar {
        padding: 14px 16px;
    }

    .top-bar h1 {
        font-size: 20px;
        line-height: 1.25;
    }

    .page-content {
        padding: 14px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .stat-card {
        padding: 16px;
        gap: 14px;
    }

    .stat-icon {
        width: 48px;
        height: 48px;
    }

    .stat-info h3 {
        font-size: 28px;
    }

    .card {
        margin-bottom: 14px;
        border-radius: 10px;
    }

    .card-header {
        padding: 14px 16px;
        gap: 8px;
        flex-wrap: wrap;
    }

    .card-header h2 {
        font-size: 16px;
    }

    .card-body {
        padding: 14px;
    }

    .btn {
        min-height: 42px;
    }

    .table {
        min-width: 760px;
    }

    .docs-content pre {
        padding: 12px;
        font-size: 12px;
    }

    .groups-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .group-card {
        padding: 14px;
        gap: 12px;
    }

    .group-info h3 {
        font-size: 16px;
    }

    .group-metrics {
        gap: 8px;
    }

    .metric {
        padding: 10px 8px;
    }

    .metric-value {
        font-size: 18px;
    }

    .btn-small {
        min-width: 0;
        font-size: 11px;
        padding: 8px;
    }

    .modal-content {
        width: 100%;
        max-width: none;
        height: calc(100dvh - 12px);
        max-height: calc(100dvh - 12px);
        border-radius: 14px 14px 0 0;
        margin-top: 12px;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding-left: 16px;
        padding-right: 16px;
    }

    .modal-footer {
        padding-bottom: calc(14px + env(safe-area-inset-bottom));
    }
}

@media (max-width: 420px) {
    .top-bar {
        padding: 12px;
    }

    .top-bar h1 {
        font-size: 18px;
    }

    .badge {
        font-size: 11px;
        padding: 3px 10px;
    }

    .nav-item {
        font-size: 10px;
        gap: 2px;
    }

    .nav-item svg {
        width: 16px;
        height: 16px;
    }

    .group-actions {
        flex-direction: column;
    }

    .btn-small {
        width: 100%;
    }
}