/* ============================================
   MCPShield - Main Stylesheet
   Professional Grade Design System
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --color-bg: #0a0a0f;
    --color-bg-secondary: #111118;
    --color-bg-tertiary: #1a1a24;
    --color-surface: rgba(255, 255, 255, 0.03);
    --color-surface-hover: rgba(255, 255, 255, 0.06);
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-light: rgba(255, 255, 255, 0.12);
    
    --color-text: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.7);
    --color-text-tertiary: rgba(255, 255, 255, 0.5);
    --color-text-muted: rgba(255, 255, 255, 0.4);
    
    /* Brand Colors */
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-dark: #4f46e5;
    --color-secondary: #8b5cf6;
    --color-accent: #a78bfa;
    
    /* Status Colors */
    --color-critical: #ef4444;
    --color-critical-bg: rgba(239, 68, 68, 0.15);
    --color-high: #f97316;
    --color-high-bg: rgba(249, 115, 22, 0.15);
    --color-medium: #eab308;
    --color-medium-bg: rgba(234, 179, 8, 0.15);
    --color-low: #22c55e;
    --color-low-bg: rgba(34, 197, 94, 0.15);
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.15);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a78bfa 100%);
    --gradient-text: linear-gradient(135deg, #818cf8 0%, #c4b5fd 100%);
    --gradient-glow: radial-gradient(ellipse at center, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    --gradient-radial: radial-gradient(ellipse at top, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
    
    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    --shadow-glow-lg: 0 0 60px rgba(99, 102, 241, 0.4);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

/* Background Effects */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-radial);
    pointer-events: none;
    z-index: -3;
}

.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    z-index: -2;
}

.bg-noise {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.03;
    pointer-events: none;
    z-index: -1;
}

/* Floating Orbs */
.orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    pointer-events: none;
    z-index: -1;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: rgba(99, 102, 241, 0.15);
    top: -200px;
    right: -200px;
    animation-delay: 0s;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: rgba(139, 92, 246, 0.12);
    bottom: -150px;
    left: -150px;
    animation-delay: -7s;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: rgba(167, 139, 250, 0.1);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -14s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(30px, -30px) scale(1.05); }
    50% { transform: translate(-20px, 20px) scale(0.95); }
    75% { transform: translate(20px, 30px) scale(1.02); }
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.125rem; }

p {
    color: var(--color-text-secondary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.text-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--spacing-md) 0;
    transition: all var(--transition-base);
}

.nav.scrolled {
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-text);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-icon {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}

.btn-icon-left {
    width: 20px;
    height: 20px;
    margin-right: var(--spacing-xs);
}

.btn:hover .btn-icon {
    transform: translateX(3px);
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md), 0 0 20px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(99, 102, 241, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border-light);
}

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

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    color: var(--color-text);
    background: var(--color-surface);
}

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

.btn-white:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-2px);
}

.btn-ghost-white {
    background: transparent;
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-ghost-white:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* Glass Card */
.glass-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(20px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
}

/* Section Styles */
section {
    position: relative;
    padding: var(--spacing-5xl) 0;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-4xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-primary-light);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: center;
}

.hero-content {
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.badge-pulse {
    width: 8px;
    height: 8px;
    background: var(--color-success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-xl);
}

.title-line {
    display: block;
}

.title-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    max-width: 500px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.stat {
    text-align: left;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-text);
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-light);
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-xs);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    z-index: 1;
}

.dashboard-preview {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.preview-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.preview-dots {
    display: flex;
    gap: 6px;
}

.preview-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-border);
}

.preview-dots span:first-child { background: #ef4444; }
.preview-dots span:nth-child(2) { background: #eab308; }
.preview-dots span:last-child { background: #22c55e; }

.preview-title {
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
}

.preview-content {
    display: flex;
    min-height: 300px;
}

.preview-sidebar {
    width: 60px;
    background: var(--color-bg);
    border-right: 1px solid var(--color-border);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.sidebar-item {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    color: var(--color-text-tertiary);
    transition: all var(--transition-fast);
    position: relative;
}

.sidebar-item svg {
    width: 18px;
    height: 18px;
}

.sidebar-item.active {
    background: var(--color-primary);
    color: white;
}

.sidebar-item.alert {
    color: var(--color-high);
}

.alert-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 16px;
    height: 16px;
    background: var(--color-critical);
    border-radius: 50%;
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-main {
    flex: 1;
    padding: var(--spacing-lg);
}

.preview-stats {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.mini-stat {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    text-align: center;
}

.mini-stat.critical {
    border-color: rgba(239, 68, 68, 0.3);
    background: var(--color-critical-bg);
}

.mini-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.mini-stat.critical .mini-stat-value {
    color: var(--color-critical);
}

.mini-stat-label {
    font-size: 0.7rem;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.preview-table {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.table-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-surface);
    border-radius: var(--radius-md);
}

.server-name {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--color-text);
}

.risk-badge {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.risk-badge.critical {
    background: var(--color-critical-bg);
    color: var(--color-critical);
}

.risk-badge.high {
    background: var(--color-high-bg);
    color: var(--color-high);
}

.risk-badge.medium {
    background: var(--color-medium-bg);
    color: var(--color-medium);
}

.risk-badge.low {
    background: var(--color-low-bg);
    color: var(--color-low);
}

/* Floating Cards */
.float-card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: floatCard 6s ease-in-out infinite;
}

.float-card-1 {
    top: 10%;
    right: -20px;
    animation-delay: 0s;
}

.float-card-2 {
    bottom: 20%;
    left: -30px;
    animation-delay: -3s;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.float-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.float-icon svg {
    width: 20px;
    height: 20px;
}

.float-icon.critical {
    background: var(--color-critical-bg);
    color: var(--color-critical);
}

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

.float-text {
    display: flex;
    flex-direction: column;
}

.float-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text);
}

.float-desc {
    font-size: 0.7rem;
    color: var(--color-text-tertiary);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--color-text-tertiary);
    font-size: 0.8rem;
    animation: fadeInUp 1s ease forwards;
    animation-delay: 2s;
    opacity: 0;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--color-border-light);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--color-text-tertiary);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s ease-in-out infinite;
}

@keyframes scroll {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.3; transform: translateX(-50%) translateY(10px); }
}

/* Problem Section */
.problem {
    background: var(--color-bg-secondary);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.problem-card {
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
}

.problem-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-border-light);
    box-shadow: var(--shadow-lg);
}

.problem-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.problem-icon svg {
    width: 28px;
    height: 28px;
    color: white;
}

.problem-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.problem-card p {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-lg);
}

.problem-stat {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.stat-highlight {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.problem-stat span:last-child {
    font-size: 0.85rem;
    color: var(--color-text-tertiary);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        order: 1;
    }
    
    .hero-visual {
        order: 2;
        max-width: 600px;
        margin: 0 auto;
    }
    
    .hero-subtitle {
        margin: 0 auto var(--spacing-2xl);
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .problem-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
    
    .float-card {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-actions .btn-ghost {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .stat-divider {
        display: none;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }
    
    section {
        padding: var(--spacing-4xl) 0;
    }
}