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

:root {
    --bg-color: #f8fafc;
    --sidebar-bg: rgba(255, 255, 255, 0.7);
    --sidebar-border: rgba(0, 0, 0, 0.08);
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --accent-color: #7c81f6;
    --accent-hover: #6c71f0;
    --danger-color: #ef4444;
    --card-bg: rgba(255, 255, 255, 0.9);

    --sidebar-width: 250px;
    --sidebar-collapsed-width: 70px;
    --header-height: 70px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    overflow-x: hidden;
    background-image: radial-gradient(circle at 10% 20%, rgba(124, 129, 246, 0.08) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(236, 72, 153, 0.08) 0%, transparent 20%);
    min-height: 100vh;
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-right: 1px solid var(--sidebar-border);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar.collapsed {
    width: var(--sidebar-collapsed-width);
}

.sidebar-header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 1.25rem;
    border-bottom: 1px solid var(--sidebar-border);
    white-space: nowrap;
    overflow: hidden;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--accent-color);
    font-weight: 700;
    font-size: 1.25rem;
    text-decoration: none;
}

.brand-logo i {
    font-size: 1.5rem;
    min-width: 24px;
    text-align: center;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 0;
}

/* Custom scrollbar for sidebar */
.sidebar-nav::-webkit-scrollbar {
    width: 6px;
}

.sidebar-nav::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 0 0.75rem;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 10px 14px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.nav-item a i {
    font-size: 1.25rem;
    min-width: 20px;
    text-align: center;
    transition: color 0.2s ease;
}

.nav-item a:hover,
.nav-item a.active {
    background: rgba(79, 70, 229, 0.08);
    color: var(--text-primary);
}

.nav-item a:hover i,
.nav-item a.active i {
    color: var(--accent-color);
    transform: scale(1.1);
}

/* Hide text when collapsed */
.sidebar.collapsed .nav-text,
.sidebar.collapsed .brand-text {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0s 0.2s;
}

.sidebar:not(.collapsed) .nav-text,
.sidebar:not(.collapsed) .brand-text {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease 0.1s;
}

/* User Profile in Sidebar Bottom */
.sidebar-footer {
    padding: 1rem;
    border-top: 1px solid var(--sidebar-border);
    display: flex;
    align-items: center;
    gap: 12px;
    white-space: nowrap;
    overflow: hidden;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), #ec4899);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: #fff;
    flex-shrink: 0;
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-size: 0.875rem;
    font-weight: 500;
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.sidebar.collapsed .user-info {
    opacity: 0;
    width: 0;
    transition: opacity 0.2s;
}

/* Main Content Area */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    position: relative;
    z-index: 1;
}

/* Top Header */
.top-header {
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--sidebar-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 50;
}

.toggle-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: all 0.2s;
}

.toggle-btn:hover {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.05);
}

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

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.125rem;
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    position: relative;
}

.icon-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

/* Standard Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    outline: none;
}

.btn-primary {
    background: var(--accent-color);
    color: #fff;
    border: 1px solid var(--accent-color);
}

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
}

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

.btn-secondary:hover {
    background: #f8fafc;
    border-color: #cbd5e1;
}

.btn-danger {
    background: #fff;
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.btn-danger:hover {
    background: var(--danger-color);
    color: #fff;
}

.badge {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 8px;
    height: 8px;
    background: var(--danger-color);
    border-radius: 50%;
}

/* Content Area */
.content-area {
    padding: 2rem;
    overflow-y: auto;
    flex: 1;
}

.content-area::-webkit-scrollbar {
    width: 8px;
}

.content-area::-webkit-scrollbar-track {
    background: transparent;
}

.content-area::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 4px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

/* Dashboard Grid Component */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--sidebar-border);
    border-radius: 12px;
    padding: 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-color), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-title {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.stat-value {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-icon {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 2rem;
    color: var(--accent-color);
    opacity: 0.2;
    transition: opacity 0.3s, transform 0.3s;
}

.stat-card:hover .stat-icon {
    opacity: 0.4;
    transform: scale(1.1);
}

/* Panel Card */
.panel-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--sidebar-border);
    border-radius: 12px;
    padding: 1.5rem;
    min-height: 350px;
    display: flex;
    flex-direction: column;
}

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

.panel-title {
    font-weight: 600;
    font-size: 1.125rem;
}

/* Responsiveness */
@media (max-width: 768px) {
    .sidebar {
        position: absolute;
        height: 100%;
        transform: translateX(0);
    }

    .sidebar.collapsed {
        transform: translateX(-100%);
        width: var(--sidebar-width);
        /* keep full width when sliding out */
    }
}