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

:root {
    --bg-color: #0d1117;
    --surface-color: #161b22;
    --surface-overlay: #21262d;
    --border-color: #30363d;
    --border-color-hover: #8b949e;
    
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --text-muted: #484f58;
    
    --accent: #58a6ff;
    --accent-hover: #1f6feb;
    --accent-dim: rgba(88, 166, 255, 0.15);
    
    --success: #3fb950;
    --success-dim: rgba(63, 185, 80, 0.15);
    --danger: #f85149;
    --danger-dim: rgba(248, 81, 73, 0.15);
    --warning: #d29922;
    --warning-dim: rgba(210, 153, 34, 0.15);
    --superadmin-color: #f0883e;
    --superadmin-dim: rgba(240, 136, 62, 0.15);
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Header & Navbar */
header {
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    list-style: none;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-primary);
    background-color: var(--border-color);
    text-decoration: none;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--border-color);
    padding: 0.35rem 0.75rem;
    border-radius: 50px;
    font-size: 0.85rem;
}

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

.badge-dot.superadmin {
    background-color: var(--superadmin-color);
}

/* Container */
.container {
    flex: 1;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Flash Messages */
.flash-container {
    margin-bottom: 1.5rem;
}

.alert {
    padding: 1rem;
    border-radius: 6px;
    margin-bottom: 0.75rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid transparent;
    animation: slideIn 0.3s ease-out;
}

.alert-success {
    background-color: var(--success-dim);
    border-color: rgba(63, 185, 80, 0.4);
    color: #56d364;
}

.alert-danger {
    background-color: var(--danger-dim);
    border-color: rgba(248, 81, 73, 0.4);
    color: #ff7b72;
}

.alert-warning {
    background-color: var(--warning-dim);
    border-color: rgba(210, 153, 34, 0.4);
    color: #e3b341;
}

.alert-info {
    background-color: var(--accent-dim);
    border-color: rgba(88, 166, 255, 0.4);
    color: var(--accent);
}

.alert-close {
    background: none;
    border: none;
    color: currentColor;
    font-size: 1.25rem;
    cursor: pointer;
    line-height: 1;
    padding: 0 0.25rem;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.alert-close:hover {
    opacity: 1;
}

/* Cards & Panels */
.card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.card-title {
    font-size: 1.1rem;
    font-weight: 600;
}

/* Dashboard Statistics Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    font-size: 2rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 6px;
    background-color: var(--border-color);
}

.stat-icon.blue { color: var(--accent); background-color: var(--accent-dim); }
.stat-icon.green { color: var(--success); background-color: var(--success-dim); }
.stat-icon.red { color: var(--danger); background-color: var(--danger-dim); }
.stat-icon.orange { color: var(--superadmin-color); background-color: var(--superadmin-dim); }

.stat-details h3 {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-details p {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

/* Form Styling */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 0.6rem 0.8rem;
    font-size: 0.95rem;
    font-family: inherit;
    transition: all 0.2s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-dim);
}

.form-control::placeholder {
    color: var(--text-muted);
}

.form-text {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.form-error {
    color: #ff7b72;
    font-size: 0.8rem;
    margin-top: 0.35rem;
    display: block;
}

/* Custom Checkbox */
.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.form-check-input {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}

.form-check-label {
    font-size: 0.9rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.55rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
    gap: 0.5rem;
}

.btn-primary {
    background-color: #21262d;
    color: #c9d1d9;
    border-color: #30363d;
}

.btn-primary:hover {
    background-color: #30363d;
    border-color: #8b949e;
}

.btn-accent {
    background-color: #238636;
    color: #ffffff;
    border-color: rgba(240, 240, 240, 0.1);
}

.btn-accent:hover {
    background-color: #2ea043;
}

.btn-danger {
    background-color: var(--danger-dim);
    color: #ff7b72;
    border-color: rgba(248, 81, 73, 0.4);
}

.btn-danger:hover {
    background-color: #f85149;
    color: #ffffff;
    border-color: #f85149;
}

.btn-secondary {
    background: none;
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}

.btn-sm {
    padding: 0.3rem 0.6rem;
    font-size: 0.8rem;
    border-radius: 4px;
}

/* Input groups (e.g. for Generate Code button) */
.input-group {
    display: flex;
    gap: 0.5rem;
}

.input-group .form-control {
    flex: 1;
}

/* Table Styling */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    text-align: left;
}

th {
    background-color: var(--surface-color);
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.75rem 1rem;
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}

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

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.15rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 50px;
    border: 1px solid transparent;
}

.badge-active {
    background-color: var(--success-dim);
    color: #56d364;
    border-color: rgba(63, 185, 80, 0.3);
}

.badge-inactive {
    background-color: var(--danger-dim);
    color: #ff7b72;
    border-color: rgba(248, 81, 73, 0.3);
}

.badge-superadmin {
    background-color: var(--superadmin-dim);
    color: #f0883e;
    border-color: rgba(240, 136, 62, 0.3);
}

.badge-admin {
    background-color: var(--accent-dim);
    color: var(--accent);
    border-color: rgba(88, 166, 255, 0.3);
}

/* Login Layout */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
    padding: 2rem 1rem;
}

.login-card {
    width: 100%;
    max-width: 360px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 2rem;
}

.login-header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.login-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.login-header p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Image preview box */
.image-preview-wrapper {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

.image-preview {
    width: 64px;
    height: 64px;
    border-radius: 6px;
    border: 1px dashed var(--border-color);
    background-color: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.image-preview img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.image-preview-placeholder {
    color: var(--text-muted);
    font-size: 0.75rem;
    text-align: center;
    padding: 0.25rem;
}

/* Device Details Grid */
.device-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.8rem;
    background-color: var(--surface-color);
    margin-top: auto;
}

/* Pagination container */
.pagination-wrapper {
    display: flex;
    justify-content: center;
    margin-top: 1.5rem;
}

.pagination {
    display: flex;
    list-style: none;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
}

.pagination-item a, .pagination-item span {
    display: block;
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
    background-color: var(--surface-color);
    color: var(--text-primary);
    border-right: 1px solid var(--border-color);
}

.pagination-item:last-child a, .pagination-item:last-child span {
    border-right: none;
}

.pagination-item a:hover {
    background-color: var(--border-color);
    text-decoration: none;
}

.pagination-item.active span {
    background-color: var(--accent);
    color: var(--bg-color);
    font-weight: 600;
}

.pagination-item.disabled span {
    color: var(--text-muted);
    background-color: var(--surface-color);
}

/* Search bar styling */
.filter-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.search-form {
    display: flex;
    gap: 0.5rem;
    flex: 1;
    max-width: 400px;
}

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

/* Actions list layout */
.action-buttons {
    display: flex;
    gap: 0.5rem;
}

/* Animations */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive configurations */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    .nav-links {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    .filter-bar {
        flex-direction: column;
        align-items: stretch;
    }
    .search-form {
        max-width: 100%;
    }
    .action-buttons {
        flex-direction: column;
    }
}