/**
 * Trinity Trust Theme - Premium Design System
 * Lead Score Lab - AI-Powered LinkedIn Scoring
 * 
 * Color Palette:
 * Primary: #0052a3 (Dark Blue)
 * Secondary: #3da4f9 (Light Blue)
 * White: #ffffff
 * Dark: #0a0f14
 * Gray: #2f3c48
 */

:root {
    --primary: #0052a3;
    --primary-dark: #003d7a;
    --primary-light: #1a6abf;
    --secondary: #3da4f9;
    --secondary-light: #6bbaff;
    --white: #ffffff;
    --dark: #0a0f14;
    --gray: #2f3c48;
    --gray-light: #4a5968;
    --gray-lighter: #e8ecf0;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --background: #f8fafc;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    overflow-x: hidden;
    max-width: 100vw;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    max-width: 100vw;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--space-sm);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h5 { font-size: clamp(1.125rem, 2vw, 1.25rem); }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--space-sm);
    color: var(--gray);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    gap: 0.5rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

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

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

.btn-ghost:hover {
    background: var(--gray-lighter);
    color: var(--primary);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Cards */
.card {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-header {
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--gray-lighter);
    margin-bottom: var(--space-md);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--dark);
    margin: 0;
}

.card-body {
    color: var(--gray);
}

/* Premium Top Bar / Navigation */
.top-bar {
    background: var(--white);
    border-bottom: 1px solid var(--gray-lighter);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.navbar {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

.navbar-brand:hover {
    color: var(--secondary);
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.navbar-link {
    color: var(--gray);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.navbar-link:hover {
    color: var(--primary);
}

.navbar-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

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

.navbar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--dark);
    cursor: pointer;
}

/* Hero Section with Math Background */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 50%, var(--dark) 100%);
    color: var(--white);
    padding: var(--space-2xl) var(--space-lg);
    overflow: hidden;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(61, 164, 249, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(61, 164, 249, 0.15) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

.hero-numbers {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    font-size: 8rem;
    font-weight: 700;
    opacity: 0.05;
    pointer-events: none;
    overflow: hidden;
    font-family: 'Courier New', monospace;
}

.hero-numbers span {
    position: absolute;
    animation: float 20s ease-in-out infinite;
}

.hero-numbers span:nth-child(1) { top: 10%; left: 10%; animation-delay: 0s; }
.hero-numbers span:nth-child(2) { top: 20%; right: 15%; animation-delay: 2s; }
.hero-numbers span:nth-child(3) { bottom: 15%; left: 15%; animation-delay: 4s; }
.hero-numbers span:nth-child(4) { bottom: 20%; right: 10%; animation-delay: 6s; }
.hero-numbers span:nth-child(5) { top: 50%; left: 50%; transform: translate(-50%, -50%); animation-delay: 8s; font-size: 12rem; }

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    margin-bottom: var(--space-md);
    line-height: 1.1;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    margin-bottom: var(--space-xl);
    opacity: 0.9;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* Features Section */
.features {
    padding: var(--space-2xl) var(--space-lg);
    background: var(--background);
}

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

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--gray);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 100%);
    border-radius: var(--radius-xl);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: var(--space-sm);
}

.feature-description {
    color: var(--gray);
    line-height: 1.8;
}

/* How It Works - Infographic */
.how-it-works {
    padding: var(--space-2xl) var(--space-lg);
    background: var(--white);
}

.steps {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: calc(100% - 80px);
    background: linear-gradient(180deg, var(--secondary) 0%, var(--primary) 100%);
}

.step {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
    position: relative;
}

.step:nth-child(even) {
    flex-direction: row-reverse;
}

.step-number {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    box-shadow: var(--shadow-xl);
    position: relative;
    z-index: 1;
}

.step-content {
    flex: 1;
    background: var(--background);
    padding: var(--space-lg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.step-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: var(--space-sm);
}

.step-description {
    color: var(--gray);
    line-height: 1.8;
}

/* Premium Footer */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: var(--space-2xl) var(--space-lg) var(--space-lg);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-section h4 {
    color: var(--white);
    font-size: 1.125rem;
    margin-bottom: var(--space-md);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
}

.footer-links a:hover {
    color: var(--secondary);
    transform: translateX(4px);
}

.footer-bottom {
    max-width: 1200px;
    margin: var(--space-lg) auto 0;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom p {
    color: var(--white);
}

.footer-bottom a {
    color: var(--secondary);
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    33% {
        transform: translate(30px, -30px);
    }
    66% {
        transform: translate(-20px, 20px);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: var(--space-lg);
        box-shadow: var(--shadow-xl);
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
        gap: var(--space-md);
    }
    
    .navbar-menu.active {
        transform: translateY(0);
        opacity: 1;
    }
    
    .navbar-toggle {
        display: block;
    }
    
    .hero {
        min-height: 500px;
        padding: var(--space-xl) var(--space-md);
    }
    
    .hero-numbers span {
        font-size: 4rem !important;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .steps::before {
        left: 40px;
    }
    
    .step {
        flex-direction: column !important;
        text-align: center;
    }
    
    .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

/* Utility Classes */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--space-lg);
}

.text-center {
    text-align: center;
}

.text-primary {
    color: var(--primary) !important;
}

.text-secondary {
    color: var(--secondary) !important;
}

.bg-primary {
    background-color: var(--primary) !important;
}

.bg-secondary {
    background-color: var(--secondary) !important;
}

.mb-1 { margin-bottom: var(--space-xs); }
.mb-2 { margin-bottom: var(--space-sm); }
.mb-3 { margin-bottom: var(--space-md); }
.mb-4 { margin-bottom: var(--space-lg); }
.mb-5 { margin-bottom: var(--space-xl); }

.mt-1 { margin-top: var(--space-xs); }
.mt-2 { margin-top: var(--space-sm); }
.mt-3 { margin-top: var(--space-md); }
.mt-4 { margin-top: var(--space-lg); }
.mt-5 { margin-top: var(--space-xl); }

.py-1 { padding-top: var(--space-xs); padding-bottom: var(--space-xs); }
.py-2 { padding-top: var(--space-sm); padding-bottom: var(--space-sm); }
.py-3 { padding-top: var(--space-md); padding-bottom: var(--space-md); }
.py-4 { padding-top: var(--space-lg); padding-bottom: var(--space-lg); }
.py-5 { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }

.px-1 { padding-left: var(--space-xs); padding-right: var(--space-xs); }
.px-2 { padding-left: var(--space-sm); padding-right: var(--space-sm); }
.px-3 { padding-left: var(--space-md); padding-right: var(--space-md); }
.px-4 { padding-left: var(--space-lg); padding-right: var(--space-lg); }
.px-5 { padding-left: var(--space-xl); padding-right: var(--space-xl); }

.d-flex {
    display: flex;
}

.align-items-center {
    align-items: center;
}

.justify-content-center {
    justify-content: center;
}

.justify-content-between {
    justify-content: space-between;
}

.gap-1 { gap: var(--space-xs); }
.gap-2 { gap: var(--space-sm); }
.gap-3 { gap: var(--space-md); }
.gap-4 { gap: var(--space-lg); }
.gap-5 { gap: var(--space-xl); }