/* ============================================================
   Internal Asset Management System - Custom Styles
   ============================================================ */

:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #6c757d;
    --success: #2ec4b6;
    --warning: #ff9f1c;
    --danger: #e71d36;
    --info: #4cc9f0;
    --sidebar-bg: #1e293b;
    --sidebar-text: #94a3b8;
    --sidebar-active: #4361ee;
    --body-bg: #f1f5f9;
    --card-bg: #ffffff;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--body-bg);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

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

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.sidebar-header h4 {
    color: #fff;
    font-size: 1.1rem;
    margin: 0;
    font-weight: 700;
}

.sidebar-header small {
    color: var(--sidebar-text);
    font-size: 0.75rem;
}

.sidebar-nav {
    padding: 1rem 0;
}

.nav-section {
    padding: 0.5rem 1.5rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #64748b;
    margin-top: 0.5rem;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 0.6rem 1.5rem;
    color: var(--sidebar-text);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-link:hover {
    color: #fff;
    background: rgba(255,255,255,0.05);
}

.nav-link.active {
    color: #fff;
    background: rgba(67, 97, 238, 0.15);
    border-left-color: var(--sidebar-active);
}

.nav-link i {
    width: 20px;
    margin-right: 0.75rem;
    text-align: center;
}

/* Main content */
.main-content {
    margin-left: 260px;
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: calc(100% - 260px);
}

/* Top bar */
.topbar {
    background: var(--card-bg);
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 999;
    width: 100%;
    box-sizing: border-box;
}

.topbar-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.topbar-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}

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

.user-info strong {
    color: #1e293b;
}

/* Content area */
.content-area {
    padding: 1.5rem;
    flex: 1;
}

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

.page-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    margin: 0;
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    border: 1px solid #e2e8f0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    margin-bottom: 1.5rem;
}

.card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid #e2e8f0;
    font-weight: 600;
    font-size: 0.95rem;
}

.card-body {
    padding: 1.25rem;
}

/* Stat cards */
.stat-card {
    background: var(--card-bg);
    border-radius: 0.75rem;
    padding: 1.25rem;
    border: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: #fff;
}

.stat-icon.blue { background: var(--primary); }
.stat-icon.green { background: var(--success); }
.stat-icon.orange { background: var(--warning); }
.stat-icon.red { background: var(--danger); }
.stat-icon.purple { background: #7c3aed; }
.stat-icon.cyan { background: var(--info); }

.stat-info h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
    color: #1e293b;
}

.stat-info p {
    margin: 0;
    font-size: 0.8rem;
    color: var(--secondary);
}

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

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

table th {
    background: #f8fafc;
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    color: #475569;
    border-bottom: 2px solid #e2e8f0;
    white-space: nowrap;
}

table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #f1f5f9;
    color: #334155;
}

table tr:hover td {
    background: #f8fafc;
}

/* Status badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
}

.badge-available { background: #d1fae5; color: #065f46; }
.badge-in_use { background: #dbeafe; color: #1e40af; }
.badge-repairing { background: #fef3c7; color: #92400e; }
.badge-broken { background: #fecaca; color: #991b1b; }
.badge-lost { background: #f3e8ff; color: #6b21a8; }
.badge-retired { background: #e5e7eb; color: #374151; }
.badge-reserved { background: #e0f2fe; color: #0369a1; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-success { background: var(--success); color: #fff; }
.btn-warning { background: var(--warning); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-secondary { background: #e2e8f0; color: #475569; }
.btn-sm { padding: 0.3rem 0.7rem; font-size: 0.78rem; }

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: #374151;
    margin-bottom: 0.3rem;
}

.form-control {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    transition: border-color 0.2s;
    background: #fff;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

select.form-control {
    appearance: auto;
}

/* Grid helpers */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.grid-6 { display: grid; grid-template-columns: repeat(6, 1fr); gap: 1rem; }

/* Loading spinner */
.loading-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    color: var(--secondary);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid #e2e8f0;
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 0.75rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Alert/Toast */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.alert-success { background: #d1fae5; color: #065f46; border: 1px solid #a7f3d0; }
.alert-error { background: #fecaca; color: #991b1b; border: 1px solid #fca5a5; }
.alert-warning { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }

/* Modal */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 9998;
    display: none;
}

.modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--card-bg);
    border-radius: 0.75rem;
    z-index: 9999;
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    overflow-y: auto;
    display: none;
    box-shadow: 0 25px 50px rgba(0,0,0,0.15);
}

.modal-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h5 {
    margin: 0;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--secondary);
}

.modal-body {
    padding: 1.25rem;
}

.modal-footer {
    padding: 0.75rem 1.25rem;
    border-top: 1px solid #e2e8f0;
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-top: 1rem;
    justify-content: center;
}

.pagination button {
    padding: 0.4rem 0.75rem;
    border: 1px solid #d1d5db;
    background: #fff;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 0.8rem;
}

.pagination button.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.pagination button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Responsive */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-6 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        width: 100%;
    }
    .topbar {
        padding: 0.75rem 1rem;
    }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .grid-6 { grid-template-columns: repeat(2, 1fr); }
}

/* Misc utilities */
.text-muted { color: var(--secondary); }
.text-right { text-align: right; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.d-flex { display: flex; }
.gap-1 { gap: 0.5rem; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }