/* ===================================
   DESIGN SYSTEM - Joanna Dudzic Portfolio
   Pixel Perfect Swiss Design Implementation
   =================================== */

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

:root {
    /* Colors */
    --color-primary: #000000;
    --color-secondary: #ffffff;
    --color-gray-50: #FAFAFA;
    --color-gray-100: #F5F5F5;
    --color-gray-200: #E5E5E5;
    --color-gray-300: #D4D4D4;
    --color-gray-400: #A3A3A3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;
    --color-accent: #FF0000;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 96px;
    --space-5xl: 128px;
    
    /* Layout */
    --max-width: 1440px;
    --container-padding: var(--space-2xl);
    --section-spacing: var(--space-5xl);
    
    /* Transitions */
    --transition-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.15);
}

/* Base HTML */
html {
    scroll-behavior: smooth;
    font-size: 16px;
    line-height: 1.6;
}

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

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--color-primary);
    color: var(--color-secondary);
    padding: var(--space-sm) var(--space-md);
    text-decoration: none;
    border-radius: 4px;
    z-index: 10000;
    opacity: 0;
    transition: top 0.3s ease, opacity 0.3s ease;
}

.skip-link:focus {
    top: 6px;
    opacity: 1;
}

/* Container System */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Typography Scale */
.display {
    font-size: clamp(48px, 8vw, 96px);
    font-weight: var(--font-weight-black);
    line-height: 0.85;
    letter-spacing: -0.04em;
}

.h1 {
    font-size: clamp(40px, 6vw, 72px);
    font-weight: var(--font-weight-extrabold);
    line-height: 0.9;
    letter-spacing: -0.03em;
}

.h2 {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: var(--font-weight-bold);
    line-height: 0.95;
    letter-spacing: -0.02em;
}

.h3 {
    font-size: clamp(24px, 4vw, 40px);
    font-weight: var(--font-weight-semibold);
    line-height: 1.1;
    letter-spacing: -0.01em;
}

.body-large {
    font-size: clamp(18px, 2vw, 24px);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
}

.body {
    font-size: clamp(16px, 1.5vw, 18px);
    font-weight: var(--font-weight-normal);
    line-height: 1.7;
}

.small {
    font-size: clamp(14px, 1.2vw, 16px);
    font-weight: var(--font-weight-normal);
    line-height: 1.5;
    letter-spacing: 0.01em;
}

.caption {
    font-size: clamp(12px, 1vw, 14px);
    font-weight: var(--font-weight-medium);
    line-height: 1.4;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.section-number {
    display: inline-block;
    font-size: 14px;
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-400);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
    opacity: 0;
    animation: fadeInUp 1s var(--transition-smooth) forwards;
}

.section-title {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: var(--font-weight-bold);
    line-height: 0.95;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
    opacity: 0;
    animation: fadeInUp 1s var(--transition-smooth) 0.2s forwards;
}

.section-subtitle {
    font-size: clamp(16px, 1.5vw, 18px);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-500);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0;
    animation: fadeInUp 1s var(--transition-smooth) 0.4s forwards;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: var(--color-secondary);
    overflow: hidden;
}

/* Hero Elements - Simple Animation System */
.hero-number {
    display: block;
    font-size: 14px;
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-400);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-xl);
    opacity: 0;
    transform: translateY(20px);
}

.hero-title {
    font-size: clamp(48px, 10vw, 120px);
    font-weight: var(--font-weight-black);
    line-height: 0.8;
    letter-spacing: -0.06em;
    margin-bottom: var(--space-xl);
    overflow: hidden;
}

.hero-title-line {
    display: block;
    opacity: 0;
    transform: translateY(100%);
}

.hero-subtitle {
    font-size: clamp(20px, 3vw, 32px);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
    margin-bottom: var(--space-2xl);
    opacity: 0;
    transform: translateY(20px);
}

.hero-description {
    margin-bottom: var(--space-3xl);
    opacity: 0;
    transform: translateY(20px);
}

.hero-description p {
    font-size: clamp(16px, 2vw, 20px);
    font-weight: var(--font-weight-normal);
    color: var(--color-gray-500);
    letter-spacing: 0.05em;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    transform: translateY(20px);
}

/* Animation Classes */
.hero-animate .hero-number {
    animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

.hero-animate .hero-title-line:nth-child(1) {
    animation: slideUp 1s ease-out 0.4s forwards;
}

.hero-animate .hero-title-line:nth-child(2) {
    animation: slideUp 1s ease-out 0.7s forwards;
}

.hero-animate .hero-subtitle {
    animation: fadeInUp 0.8s ease-out 1s forwards;
}

.hero-animate .hero-description {
    animation: fadeInUp 0.8s ease-out 1.3s forwards;
}

.hero-animate .hero-cta {
    animation: fadeInUp 0.8s ease-out 1.6s forwards;
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.grid-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.3;
    pointer-events: none;
}

.hero-container {
    text-align: center;
    max-width: 1200px;
    padding: 0 var(--container-padding);
    position: relative;
    z-index: 2;
}

.hero-number {
    display: block;
    font-size: 14px;
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-400);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-xl);
}

.hero-title {
    font-size: clamp(48px, 10vw, 120px);
    font-weight: var(--font-weight-black);
    line-height: 0.8;
    letter-spacing: -0.06em;
    margin-bottom: var(--space-xl);
    overflow: hidden;
}

.hero-title-line {
    display: block;
}

.hero-subtitle {
    font-size: clamp(20px, 3vw, 32px);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-700);
    margin-bottom: var(--space-2xl);
}

.hero-description {
    margin-bottom: var(--space-3xl);
}

.hero-description p {
    font-size: clamp(16px, 2vw, 20px);
    font-weight: var(--font-weight-normal);
    color: var(--color-gray-500);
    letter-spacing: 0.05em;
}

/* Button Components */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 var(--space-lg);
    height: 48px;
    font-size: 16px;
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

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

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

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

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

.button--large {
    height: 56px;
    font-size: 18px;
    padding: 0 var(--space-2xl);
}

/* Card Components */
.card {
    background: var(--color-secondary);
    padding: var(--space-2xl);
    border: 1px solid var(--color-gray-200);
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
    border-radius: 0px;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0;
    height: 100%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-gray-900) 100%);
    transition: width var(--transition-smooth);
    z-index: 1;
}

.card:hover::before {
    width: 100%;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.card:hover * {
    color: var(--color-secondary);
}

.card-number {
    display: block;
    font-size: 12px;
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-400);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 2;
}

.card-title {
    font-size: clamp(20px, 3vw, 32px);
    font-weight: var(--font-weight-bold);
    line-height: 1.1;
    margin-bottom: var(--space-md);
    position: relative;
    z-index: 2;
}

.card-description {
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-gray-600);
    position: relative;
    z-index: 2;
}

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

/* Services Section */
.services {
    background: var(--color-gray-50);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
    margin-top: var(--space-3xl);
}

.service-item {
    opacity: 0;
    animation: fadeInUp 0.8s var(--transition-smooth) forwards;
}

.service-item:nth-child(1) { animation-delay: 0.1s; }
.service-item:nth-child(2) { animation-delay: 0.2s; }
.service-item:nth-child(3) { animation-delay: 0.3s; }
.service-item:nth-child(4) { animation-delay: 0.4s; }
.service-item:nth-child(5) { animation-delay: 0.5s; }
.service-item:nth-child(6) { animation-delay: 0.6s; }

/* About Section */
.about {
    background: var(--color-secondary);
    color: var(--color-primary);
    padding: var(--space-5xl) 0;
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-3xl);
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.about-text-block {
    opacity: 0;
    animation: fadeInUp 1s var(--transition-smooth) forwards;
}

.about-text-block:nth-child(1) { animation-delay: 0.2s; }
.about-text-block:nth-child(2) { animation-delay: 0.4s; }

.about-text {
    font-size: clamp(18px, 2vw, 22px);
    line-height: 1.8;
    color: var(--color-primary);
    font-weight: var(--font-weight-normal);
}

/* Area Section */
.area {
    padding: var(--space-5xl) 0;
    background: var(--color-gray-100);
}

.area-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.area-content p {
    font-size: clamp(18px, 2.5vw, 22px);
    font-weight: var(--font-weight-normal);
    line-height: 1.8;
    color: var(--color-gray-600);
    margin-bottom: var(--space-xl);
}

.area-content p:last-child {
    margin-bottom: 0;
}

.area-content strong {
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
}

/* CTA Section */
.cta {
    background: var(--color-primary);
    color: var(--color-secondary);
    text-align: center;
    position: relative;
    overflow: hidden;
    padding: var(--space-5xl) 0;
}

.cta-number {
    display: inline-block;
    font-size: 14px;
    font-weight: var(--font-weight-bold);
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: var(--space-md);
}

.cta-content {
    position: relative;
    z-index: 2;
    opacity: 0;
    animation: fadeInUp 1s var(--transition-smooth) forwards;
}

.cta-title {
    font-size: clamp(28px, 5vw, 48px);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-xl);
    color: var(--color-secondary);
}

.cta-text {
    font-size: clamp(18px, 2vw, 22px);
    margin-bottom: var(--space-2xl);
    opacity: 0.9;
    color: var(--color-secondary);
}

.cta .button--secondary {
    background-color: var(--color-secondary);
    color: var(--color-primary);
    border-color: var(--color-secondary);
}

.cta .button--secondary:hover {
    background-color: transparent;
    color: var(--color-secondary);
    border-color: var(--color-secondary);
}

/* Contact Section */
.contact {
    background: var(--color-gray-50);
    padding: var(--space-5xl) 0 var(--space-2xl) 0;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-item {
    padding: var(--space-lg);
    opacity: 0;
    animation: fadeInUp 1s var(--transition-smooth) forwards;
}

.contact-item:nth-child(1) { animation-delay: 0.2s; }
.contact-item:nth-child(2) { animation-delay: 0.4s; }

.contact-label {
    font-size: 18px;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.contact-link {
    font-size: clamp(18px, 2vw, 22px);
    color: var(--color-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    position: relative;
}

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

.contact-link:hover {
    color: var(--color-gray-700);
}

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

.footer-bottom {
    margin-top: var(--space-3xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-gray-200);
    text-align: center;
    color: var(--color-gray-500);
    font-size: 14px;
}

.footer-credits {
    margin-top: var(--space-sm);
    font-size: 12px;
    color: var(--color-gray-400);
}

/* Animations */
@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes gridFadeIn {
    to {
        opacity: 1;
    }
}

@keyframes dotPulse {
    0%, 100% {
        opacity: 0;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.5);
    }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(60px);
    transition: all var(--transition-slow);
}

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

/* Mobile Responsive */
@media (max-width: 1024px) {
    :root {
        --container-padding: var(--space-lg);
        --section-spacing: var(--space-4xl);
    }
    
    .services-grid {
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: var(--space-lg);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

@media (max-width: 640px) {
    :root {
        --container-padding: var(--space-md);
        --section-spacing: var(--space-3xl);
    }
    
    .container {
        padding: 0 var(--space-md);
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .card {
        padding: var(--space-lg);
    }
    
    .section-header {
        margin-bottom: var(--space-2xl);
    }
    
    .hero-title {
        font-size: clamp(36px, 8vw, 64px);
    }
    
    .button {
        height: 44px;
        font-size: 14px;
        padding: 0 var(--space-md);
    }
    
    .button--large {
        height: 48px;
        font-size: 16px;
        padding: 0 var(--space-lg);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: clamp(32px, 10vw, 48px);
    }
    
    .card-title {
        font-size: clamp(18px, 4vw, 24px);
    }
    
    .about-text {
        font-size: 16px;
    }
    
    .contact-link {
        font-size: 16px;
    }
}

/* Print Styles */
@media print {
    .hero-grid,
    .hero-cta,
    .cta {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-lg) 0;
    }
    
    section {
        padding: var(--space-lg) 0;
        page-break-inside: avoid;
    }
    
    .card {
        break-inside: avoid;
        border: 1px solid var(--color-gray-300);
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --color-gray-50: #f0f0f0;
        --color-gray-400: #333333;
        --color-gray-500: #222222;
    }
    
    .card {
        border: 2px solid var(--color-primary);
    }
}

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

/* Focus styles for accessibility */
.button:focus,
.contact-link:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Performance optimizations */
.will-change-transform {
    will-change: transform;
}

.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}