/* QualeQuest Professional Design - Big 4 Style */

:root {
    /* Professional Color Palette - Deloitte Inspired */
    --primary-navy: #0a1628;
    --secondary-navy: #1a365d;
    --accent-blue: #2563eb;
    --light-blue: #dbeafe;
    
    /* Neutral Professional Colors */
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing System */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    --space-4xl: 8rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--white);
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.nav-brand h1 {
    font-size: 24px;
    font-weight: var(--font-weight-bold);
    color: var(--primary-navy);
    margin: 0;
}

.nav-brand span {
    font-size: 14px;
    color: var(--gray-500);
    font-weight: var(--font-weight-medium);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
}

.nav-link {
    text-decoration: none;
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
    position: relative;
    transition: var(--transition);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-blue);
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    padding: 120px 0 var(--space-4xl);
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: -50%;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 40%, rgba(37, 99, 235, 0.03) 50%, transparent 60%);
    z-index: 1;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: var(--font-weight-bold);
    color: var(--primary-navy);
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.hero-description {
    font-size: 20px;
    color: var(--gray-600);
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
}

.btn-primary {
    background: var(--accent-blue);
    color: var(--white);
    padding: 16px 32px;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--accent-blue);
    padding: 16px 32px;
    text-decoration: none;
    border: 2px solid var(--accent-blue);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--accent-blue);
    color: var(--white);
    transform: translateY(-2px);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 400px;
}

.coordination-diagram {
    position: relative;
    width: 300px;
    height: 300px;
}

.system-node {
    position: absolute;
    width: 120px;
    height: 60px;
    background: var(--white);
    border: 2px solid var(--accent-blue);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-semibold);
    color: var(--accent-blue);
    box-shadow: var(--shadow-md);
    animation: float 3s ease-in-out infinite;
}

.system-node:nth-child(1) {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    animation-delay: 0s;
}

.system-node:nth-child(2) {
    bottom: 40px;
    left: 0;
    animation-delay: 1s;
}

.system-node:nth-child(3) {
    bottom: 40px;
    right: 0;
    animation-delay: 2s;
}

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

/* Sections */
section {
    padding: var(--space-4xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: var(--font-weight-bold);
    color: var(--primary-navy);
    margin-bottom: var(--space-md);
}

.section-header p {
    font-size: 20px;
    color: var(--gray-600);
    max-width: 800px;
    margin: 0 auto;
}

/* Value Proposition */
.value-proposition {
    background: var(--gray-50);
}

.value-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-xl);
}

.value-card {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.value-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.value-card h3 {
    font-size: 24px;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-navy);
    margin-bottom: var(--space-md);
}

/* Capabilities */
.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
}

.capability-item {
    background: var(--white);
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.capability-item:hover {
    border-color: var(--accent-blue);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.capability-icon {
    width: 60px;
    height: 60px;
    background: var(--light-blue);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    color: var(--accent-blue);
}

.capability-icon svg {
    width: 30px;
    height: 30px;
}

.capability-item h3 {
    font-size: 24px;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-navy);
    margin-bottom: var(--space-md);
}

.capability-features {
    list-style: none;
    margin-top: var(--space-lg);
}

.capability-features li {
    padding: 8px 0;
    color: var(--gray-600);
    position: relative;
    padding-left: 20px;
}

.capability-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-weight: var(--font-weight-bold);
}

/* Approach */
.approach {
    background: var(--gray-50);
}

.approach-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
    position: relative;
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 30px;
    top: 80px;
    width: 2px;
    height: 60px;
    background: var(--gray-300);
}

.timeline-number {
    width: 60px;
    height: 60px;
    background: var(--accent-blue);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: 18px;
    flex-shrink: 0;
}

.timeline-content h3 {
    font-size: 24px;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-navy);
    margin-bottom: var(--space-sm);
}

/* Results */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-xl);
    text-align: center;
}

.result-metric {
    padding: var(--space-xl);
}

.metric-number {
    font-size: 4rem;
    font-weight: var(--font-weight-bold);
    color: var(--accent-blue);
    margin-bottom: var(--space-sm);
}

.metric-label {
    font-size: 18px;
    color: var(--gray-600);
    font-weight: var(--font-weight-medium);
}

/* Contact */
.contact {
    background: var(--primary-navy);
    color: var(--white);
}

.contact-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-xl);
}

.contact h2 {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-sm);
}

.contact p {
    font-size: 20px;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-brand h3 {
    color: var(--white);
    margin-bottom: var(--space-sm);
}

.footer-links {
    display: flex;
    gap: var(--space-lg);
}

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: var(--space-lg);
    text-align: center;
    font-size: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-legal {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.footer-legal a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 13px;
    transition: var(--transition);
}

.footer-legal a:hover {
    color: var(--white);
}

.footer-legal span {
    color: var(--gray-500);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .nav-menu {
        display: none;
    }
    
    .contact-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
    
    .timeline-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .timeline-item::after {
        left: 50%;
        transform: translateX(-50%);
    }
}