/* ============================================================
   LYNCTERA DESIGN SYSTEM
   Static component styles extracted from _Layout.cshtml
   for cacheability. Brand-specific CSS variables remain inline.
   ============================================================ */

/* ============================================================
   SIGNATURE GRADIENTS - Distinctive Lynctera branding
   ============================================================ */

.lct-gradient-primary {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
}

.lct-gradient-subtle {
    background: linear-gradient(135deg, var(--brand-primary-light) 0%, transparent 100%);
}

.lct-gradient-mesh {
    background: 
        radial-gradient(at 40% 20%, var(--brand-primary-light) 0px, transparent 50%),
        radial-gradient(at 80% 0%, color-mix(in srgb, var(--brand-accent) 15%, transparent) 0px, transparent 50%),
        radial-gradient(at 0% 50%, var(--brand-primary-light) 0px, transparent 50%);
}

.lct-gradient-hero {
    background: linear-gradient(160deg, var(--surface-primary) 0%, var(--surface-secondary) 50%, var(--brand-primary-light) 100%);
}

/* ============================================================
   SIGNATURE CARDS - Elevated card components
   ============================================================ */

.lct-card {
    background: var(--surface-elevated);
    border: 1px solid var(--border-default);
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--duration-normal) var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.lct-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
    border-color: var(--brand-primary-medium);
}

.lct-card-accent {
    border-left: 3px solid var(--brand-primary);
}

.lct-card-accent::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out-expo);
}

.lct-card-accent:hover::before {
    opacity: 1;
}

.lct-card-focus {
    border-top: 3px solid transparent;
    background-image: linear-gradient(var(--surface-elevated), var(--surface-elevated)), 
                      linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    background-origin: border-box;
    background-clip: padding-box, border-box;
}

.stat-card {
    transition: all var(--duration-normal) var(--ease-out-expo);
    position: relative;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.stat-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, transparent 40%, var(--brand-primary-light) 100%);
    opacity: 0;
    transition: opacity var(--duration-normal) var(--ease-out-expo);
    pointer-events: none;
}

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

/* ============================================================
   TYPOGRAPHY - Refined hierarchy
   ============================================================ */

.lct-heading-hero {
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: -0.025em;
    line-height: 1.1;
    color: var(--text-primary);
}

.lct-heading-section {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    color: var(--text-primary);
}

.lct-heading-card {
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--text-primary);
}

.lct-metric {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

.lct-metric-large {
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: -0.04em;
}

.lct-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

/* ============================================================
   BUTTONS - Enhanced with brand character
   ============================================================ */

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: var(--text-inverse);
    font-weight: 600;
    border: none;
    box-shadow: var(--shadow-md), 0 2px 8px var(--brand-primary-medium);
    transition: all var(--duration-fast) var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.2) 100%);
    opacity: 0;
    transition: opacity var(--duration-fast);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg), 0 4px 12px var(--brand-primary-medium);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
}

.btn-primary:focus {
    outline: 2px solid var(--brand-primary);
    outline-offset: 2px;
}

.btn-secondary {
    background-color: var(--surface-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-default);
    font-weight: 500;
    transition: all var(--duration-fast) var(--ease-out-expo);
}

.btn-secondary:hover {
    background-color: var(--surface-secondary);
    border-color: var(--brand-primary-medium);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:active {
    transform: scale(0.98);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    transition: all var(--duration-fast);
}

.btn-ghost:hover {
    background: var(--surface-tertiary);
    color: var(--brand-primary);
}

/* ============================================================
   SIDEBAR - Signature navigation
   ============================================================ */

.sidebar-link {
    transition: all var(--duration-fast) var(--ease-out-expo);
    position: relative;
}

.sidebar-link:hover {
    background: var(--surface-tertiary);
}

.sidebar-link.active {
    background: var(--brand-primary-light);
    border-left: 3px solid transparent;
    color: var(--brand-primary);
    font-weight: 600;
}

.sidebar-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
}

.sidebar {
    transition: transform var(--duration-slow) var(--ease-out-expo), 
                width var(--duration-slow) var(--ease-out-expo);
}

.sidebar.collapsed {
    transform: translateX(-100%);
}

.main-content {
    transition: margin-left var(--duration-slow) var(--ease-out-expo);
}

.main-content.expanded {
    margin-left: 0;
}

/* ============================================================
   GEOMETRIC PATTERNS - Subtle background textures
   ============================================================ */

.lct-pattern-dots {
    background-image: radial-gradient(var(--border-subtle) 1px, transparent 1px);
    background-size: 20px 20px;
}

.lct-pattern-grid {
    background-image: 
        linear-gradient(var(--border-subtle) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-subtle) 1px, transparent 1px);
    background-size: 40px 40px;
}

.lct-pattern-diagonal {
    background-image: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        var(--border-subtle) 10px,
        var(--border-subtle) 11px
    );
}

/* ============================================================
   ANIMATIONS - Micro-interactions
   ============================================================ */

.lct-stagger-in > * {
    opacity: 0;
    animation: lctFadeInUp var(--duration-slow) var(--ease-out-expo) forwards;
}

.lct-stagger-in > *:nth-child(1) { animation-delay: 0ms; }
.lct-stagger-in > *:nth-child(2) { animation-delay: 50ms; }
.lct-stagger-in > *:nth-child(3) { animation-delay: 100ms; }
.lct-stagger-in > *:nth-child(4) { animation-delay: 150ms; }
.lct-stagger-in > *:nth-child(5) { animation-delay: 200ms; }
.lct-stagger-in > *:nth-child(6) { animation-delay: 250ms; }
.lct-stagger-in > *:nth-child(7) { animation-delay: 300ms; }
.lct-stagger-in > *:nth-child(8) { animation-delay: 350ms; }

@keyframes lctFadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.lct-skeleton {
    background: linear-gradient(
        90deg,
        var(--surface-tertiary) 0%,
        var(--surface-secondary) 50%,
        var(--surface-tertiary) 100%
    );
    background-size: 200% 100%;
    animation: lctShimmer 1.5s ease-in-out infinite;
    border-radius: 0.5rem;
}

@keyframes lctShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.lct-success-pulse {
    animation: lctSuccessPulse 0.6s var(--ease-out-expo);
}

@keyframes lctSuccessPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); box-shadow: 0 0 0 4px var(--success-light); }
    100% { transform: scale(1); box-shadow: none; }
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--duration-slow) var(--ease-out-expo),
                transform var(--duration-slow) var(--ease-out-expo);
}

.reveal-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   HAMBURGER ANIMATION
   ============================================================ */

.hamburger-line {
    transition: all var(--duration-normal) var(--ease-in-out-expo);
}

.hamburger-open .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-open .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger-open .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================================
   SUBMENU ANIMATIONS
   ============================================================ */

.submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--duration-normal) var(--ease-out-expo);
}

.submenu.expanded {
    max-height: 800px;
}

.chevron {
    transition: transform var(--duration-fast) var(--ease-out-expo);
}

.chevron.rotated {
    transform: rotate(180deg);
}

.breadcrumb-separator::before {
    content: '/';
    padding: 0 0.5rem;
    color: var(--text-tertiary);
}

/* ============================================================
   STATUS INDICATORS
   ============================================================ */

.lct-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    position: relative;
}

.lct-status-dot::after {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 50%;
    background: inherit;
    opacity: 0.3;
    animation: lctPulse 2s ease-in-out infinite;
}

.lct-status-dot.success { background: var(--success); }
.lct-status-dot.warning { background: var(--warning); }
.lct-status-dot.error { background: var(--error); }
.lct-status-dot.info { background: var(--info); }

@keyframes lctPulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.5); opacity: 0; }
}

/* ============================================================
   FOCUS STATES - Accessibility
   ============================================================ */

:focus-visible {
    outline: 2px solid var(--brand-primary);
    outline-offset: 2px;
}

/* ============================================================
   DARK MODE FOUNDATION
   System preference detection + manual toggle support
   ============================================================ */

html.dark {
    --surface-primary: #0f172a;
    --surface-secondary: #1e293b;
    --surface-tertiary: #334155;
    --surface-elevated: #1e293b;
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-tertiary: #64748b;
    --text-inverse: #0f172a;
    
    --border-default: #334155;
    --border-subtle: #1e293b;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

html.dark body {
    background-color: var(--surface-primary);
    color: var(--text-primary);
}

html.dark .lct-card,
html.dark .bg-white {
    background-color: var(--surface-elevated);
    border-color: var(--border-default);
}

html.dark .sidebar,
html.dark header {
    background-color: var(--surface-secondary);
    border-color: var(--border-default);
}

html.dark .sidebar-link:hover {
    background-color: var(--surface-tertiary);
}

html.dark .sidebar-link.active {
    background-color: var(--brand-primary-light);
}

html.dark .btn-secondary {
    background-color: var(--surface-tertiary);
    color: var(--text-primary);
    border-color: var(--border-default);
}

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

html.dark input,
html.dark select,
html.dark textarea {
    background-color: var(--surface-secondary);
    border-color: var(--border-default);
    color: var(--text-primary);
}

html.dark input:focus,
html.dark select:focus,
html.dark textarea:focus {
    border-color: var(--brand-primary);
}

html.dark .lct-skeleton {
    background: linear-gradient(
        90deg,
        var(--surface-tertiary) 0%,
        var(--surface-secondary) 50%,
        var(--surface-tertiary) 100%
    );
    background-size: 200% 100%;
}

html.dark .lct-pattern-dots {
    background-image: radial-gradient(var(--border-default) 1px, transparent 1px);
}

html.dark table thead {
    background-color: var(--surface-secondary);
}

html.dark table tbody tr:hover {
    background-color: var(--surface-tertiary);
}

@media (prefers-color-scheme: dark) {
    html:not(.light) {
        --surface-primary: #0f172a;
        --surface-secondary: #1e293b;
        --surface-tertiary: #334155;
        --surface-elevated: #1e293b;
        
        --text-primary: #f8fafc;
        --text-secondary: #cbd5e1;
        --text-tertiary: #64748b;
        --text-inverse: #0f172a;
        
        --border-default: #334155;
        --border-subtle: #1e293b;
    }
}

/* ============================================================
   REDUCED MOTION - Accessibility
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .lct-stagger-in > * {
        opacity: 1;
        animation: none;
    }
    
    .reveal {
        opacity: 1;
        transform: none;
    }
}