:root {
    /* Base Color Palette (Premium Dark Theme) */
    --clr-bg: #09090b;
    --clr-surface: #18181b;
    --clr-surface-hover: #27272a;
    --clr-border: #27272a;
    
    /* Brand Colors (Murphy Collective Style) */
    --clr-primary: #3b82f6;
    --clr-primary-hover: #2563eb;
    --clr-secondary: #f4f4f5;
    
    /* Status Colors */
    --clr-alert: #ef4444;
    --clr-alert-bg: rgba(239, 68, 68, 0.1);
    --clr-success: #10b981;
    --clr-success-bg: rgba(16, 185, 129, 0.1);
    
    /* Text */
    --clr-text-main: #f4f4f5;
    --clr-text-muted: #a1a1aa;

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing & Layout */
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-full: 999px;
    --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.2);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: var(--font-body);
    background-color: var(--clr-bg);
    color: var(--clr-text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, .brand-title {
    font-family: var(--font-heading);
    font-weight: 600;
}

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

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--clr-surface);
    border-right: 1px solid var(--clr-border);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.brand-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--clr-primary), #60a5fa);
    border-radius: var(--radius-md);
    color: white;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
}

.brand-title {
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

.brand-subtitle {
    font-size: 0.75rem;
    color: var(--clr-text-muted);
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Recent Items */
.sidebar-recent {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--clr-border);
    flex: 1;
    overflow: hidden;
}

.sidebar-recent-label {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--clr-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.5rem;
}

.recent-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.5rem;
    border-radius: 8px;
    text-decoration: none;
    color: var(--clr-text-muted);
    font-size: 0.8rem;
    transition: var(--transition);
    white-space: nowrap;
    overflow: hidden;
}

.recent-item:hover {
    background: var(--clr-surface-hover);
    color: var(--clr-text-main);
}

.recent-item-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--clr-text-muted);
    border-radius: var(--radius-md);
    transition: var(--transition);
    font-weight: 500;
}

.nav-item:hover, .nav-item.active {
    background-color: var(--clr-surface-hover);
    color: var(--clr-primary);
}

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

.user-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--clr-border);
}

.avatar {
    width: 36px;
    height: 36px;
    background-color: var(--clr-surface-hover);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--clr-primary);
}

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

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

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

/* Main Content */
.main-content {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--clr-bg);
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2.5rem;
    border-bottom: 1px solid var(--clr-border);
    gap: 1rem;
}

.topbar-left {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    min-width: 0;
}

.page-title {
    font-size: 1.4rem;
    line-height: 1.2;
}

/* Breadcrumb */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: nowrap;
    overflow: hidden;
}

.crumb {
    font-size: 0.78rem;
    color: var(--clr-text-muted);
    text-decoration: none;
    white-space: nowrap;
    transition: color 0.15s ease;
}

.crumb:hover {
    color: var(--clr-primary);
}

.crumb-current {
    font-size: 0.78rem;
    color: var(--clr-text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.crumb-sep {
    color: var(--clr-border);
    font-size: 0.9rem;
    user-select: none;
}

/* Record Links */
.record-link {
    color: var(--clr-primary);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.15s ease;
}

.record-link:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.topbar-actions {
    display: flex;
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    font-family: var(--font-body);
    font-weight: 500;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 0.875rem;
}

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

.btn-primary:hover {
    background-color: var(--clr-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.25);
}

.btn-secondary {
    background-color: var(--clr-surface);
    color: var(--clr-text-main);
    border: 1px solid var(--clr-border);
}

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

.btn-icon {
    padding: 0.6rem;
}

/* Dashboard Grid */
.content-wrapper {
    padding: 2.5rem;
    overflow-y: auto;
}

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

.stat-card {
    background-color: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.25rem;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}

.icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--clr-primary);
}

.icon-wrapper.alert {
    background-color: var(--clr-alert-bg);
    color: var(--clr-alert);
}

.icon-wrapper.success {
    background-color: var(--clr-success-bg);
    color: var(--clr-success);
}

.stat-label {
    display: block;
    font-size: 0.875rem;
    color: var(--clr-text-muted);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.5rem;
    line-height: 1;
}

/* Panels */
.panel {
    background-color: var(--clr-surface);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
}

.panel-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--clr-border);
}

.panel-header h3 {
    font-size: 1.1rem;
}

.panel-body {
    padding: 2rem 1.5rem;
}

.empty-state {
    text-align: center;
    color: var(--clr-text-muted);
    font-style: italic;
    font-size: 0.95rem;
}