/* ==========================================
   PROODOS - Professional Transformation Partner
   Clean, Minimalist Design System
   ========================================== */

/* ==========================================
   CSS Variables - Design System
   ========================================== */
:root {
    /* Color Palette */
    --color-primary: #566379;
    --color-secondary: #0066cc;
    --color-accent: #0052a3;
    --color-text: #2d3748;
    --color-text-light: #64748b;
    --color-background: #ffffff;
    --color-background-light: #f8fafc;
    --color-border: #e2e8f0;
    --color-success: #10b981;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-2xl: 8rem;
    
    /* Layout */
    --container-width: 1200px;
    --border-radius: 4px;
    --transition-speed: 0.3s;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-normal);
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================
   Typography
   ========================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}

a:hover {
    color: var(--color-accent);
}

/* ==========================================
   Layout Components
   ========================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-2xl) 0;
}

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

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ==========================================
   Navigation
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all var(--transition-speed) ease;
}

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

.nav-logo .logo-link {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    letter-spacing: 0.5px;
}

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

.nav-link {
    color: var(--color-text);
    font-size: 0.9375rem;
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    transition: all var(--transition-speed) ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-secondary);
    background-color: rgba(0, 102, 204, 0.05);
}

.nav-link-cta {
    background-color: var(--color-secondary);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
}

.nav-link-cta:hover {
    background-color: var(--color-accent);
    color: white;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: all var(--transition-speed) ease;
}

/* ==========================================
   Hero Section
   ========================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f8fafc 0%, #e8eef5 100%);
    padding-top: 80px;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.scroll-indicator span {
    width: 2px;
    height: 40px;
    background: linear-gradient(to bottom, transparent, var(--color-secondary));
    animation: scroll 2s ease-in-out infinite;
}

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

/* ==========================================
   Buttons
   ========================================== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--color-accent);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-full {
    width: 100%;
}

/* ==========================================
   About Section
   ========================================== */
.about-section {
    background-color: var(--color-background);
}

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

.lead-text {
    font-size: 1.25rem;
    line-height: 1.7;
    color: #fff;
    margin-bottom: var(--spacing-md);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

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

.stat-number {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-secondary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 1rem;
    color: var(--color-text-light);
}

/* ==========================================
   Services Section
   ========================================== */
.services-section {
    background-color: var(--color-background-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed) ease;
}

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

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

.service-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.service-description {
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
}

.service-features {
    list-style: none;
    margin-bottom: var(--spacing-md);
}

.service-features li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

.service-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: var(--font-weight-bold);
}

.service-link {
    display: inline-block;
    color: var(--color-secondary);
    font-weight: var(--font-weight-semibold);
    margin-top: var(--spacing-sm);
}

.service-link:hover {
    transform: translateX(4px);
}

/* ==========================================
   Approach Section (Timeline)
   ========================================== */
.approach-section {
    background-color: var(--color-background);
}

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

.approach-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--color-secondary), transparent);
}

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

.timeline-marker {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: white;
    border: 3px solid var(--color-secondary);
    border-radius: 50%;
    position: relative;
    z-index: 1;
}

.timeline-number {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-secondary);
}

.timeline-content {
    flex: 1;
    padding-top: var(--spacing-sm);
}

.timeline-title {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.timeline-description {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ==========================================
   Why Proodos Section
   ========================================== */
.why-section {
    background-color: var(--color-background-light);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.why-card {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-secondary);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed) ease;
}

.why-card:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.why-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.why-description {
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ==========================================
   Industries Section
   ========================================== */
.industries-section {
    background-color: var(--color-background);
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.industry-item {
    padding: var(--spacing-lg);
    background-color: var(--color-background-light);
    border-radius: var(--border-radius);
    text-align: center;
    transition: all var(--transition-speed) ease;
    border: 2px solid transparent;
}

.industry-item:hover {
    border-color: var(--color-secondary);
    background-color: white;
    box-shadow: var(--shadow-md);
}

.industry-item h4 {
    font-size: 1.125rem;
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
    margin: 0;
}

/* ==========================================
   Contact Section
   ========================================== */
.contact-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, #0f1823 100%);
    color: white;
}

.contact-section .section-title {
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.contact-info {
    padding-right: var(--spacing-lg);
}

.contact-details {
    margin-top: var(--spacing-lg);
}

.contact-item {
    margin-bottom: var(--spacing-md);
}

.contact-item strong {
    display: block;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-xs);
    opacity: 0.8;
}

.contact-item p {
    font-size: 1.125rem;
    margin: 0;
}

.contact-form-wrapper {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    font-size: 0.9375rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.875rem;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-speed) ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* ==========================================
   Footer
   ========================================== */
.footer {
    background-color: var(--color-primary);
    color: white;
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
    --color-primary: white;
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
}

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

.footer-column h4 {
    color: white;
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
    transition: color var(--transition-speed) ease;
}

.footer-column ul li a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    margin: 0;
}

/* ==========================================
   Animation Utilities
   ========================================== */
.fade-in {
    animation: fadeIn 1s ease-in;
}

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ==========================================
   Responsive Design
   ========================================== */
@media (max-width: 1024px) {
    :root {
        --spacing-xl: 4rem;
        --spacing-2xl: 6rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 3rem;
        --spacing-2xl: 4rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: white;
        flex-direction: column;
        padding: var(--spacing-lg);
        transition: left var(--transition-speed) ease;
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .services-grid,
    .why-grid,
    .industries-grid {
        grid-template-columns: 1fr;
    }
    
    .approach-timeline::before {
        left: 20px;
    }
    
    .timeline-marker {
        width: 60px;
        height: 60px;
    }
    
    .timeline-number {
        font-size: 1.5rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
}

/* ==========================================
   Performance Optimizations
   ========================================== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .scroll-indicator,
    .contact-form,
    .footer {
        display: none;
    }
    
    .section {
        page-break-inside: avoid;
    }
}