/* ============================================
   SSLaboratory Website Styles
   Bold Editorial Design with High Contrast
   ============================================ */

:root {
    /* Colors - Black, White, Grey */
    --color-black: #0a0a0a;
    --color-white: #ffffff;
    --color-grey-100: #f5f5f5;
    --color-grey-200: #e5e5e5;
    --color-grey-300: #d4d4d4;
    --color-grey-400: #a3a3a3;
    --color-grey-500: #737373;
    --color-grey-600: #525252;
    --color-grey-700: #404040;
    --color-grey-800: #262626;
    --color-grey-900: #171717;

    /* Typography */
    --font-heading: 'Anton', sans-serif;
    --font-body: 'Poppins', sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-2xl: 8rem;

    /* Container */
    --container-width: 1280px;
    --container-padding: 2rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

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

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

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-black);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover {
    opacity: 0.7;
}

/* Screen Reader Only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.1;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.hero-headline {
    font-size: clamp(3rem, 8vw, 7rem);
    margin-bottom: var(--space-md);
    line-height: 0.95;
}

.hero-subhead {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    line-height: 1.6;
    max-width: 600px;
    margin-bottom: var(--space-lg);
    color: var(--color-grey-600);
}

.section-headline {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: var(--space-lg);
}

.page-headline {
    font-size: clamp(2.5rem, 6vw, 5.5rem);
    margin-bottom: var(--space-md);
    line-height: 1;
}

.page-subhead {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    color: var(--color-grey-600);
    margin-bottom: var(--space-lg);
}

.page-intro {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    line-height: 1.7;
    max-width: 800px;
    margin-top: var(--space-lg);
}

.page-intro p {
    margin-bottom: var(--space-md);
}

.page-intro p:last-child {
    margin-bottom: 0;
}

/* ============================================
   Layout
   ============================================ */

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

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

/* ============================================
   Header
   ============================================ */

.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--color-white);
    border-bottom: 2px solid var(--color-black);
    padding: var(--space-md) 0;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    text-transform: uppercase;
    letter-spacing: -0.01em;
}

.main-nav {
    display: flex;
    gap: var(--space-lg);
}

.main-nav a {
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    transition: color var(--transition-fast);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-grey-500);
}

.main-nav a.active::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--color-black);
}

/* ============================================
   Hero Section
   ============================================ */

.hero {
    position: relative;
    padding: var(--space-2xl) 0;
    overflow: hidden;
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-visual {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

.geometric-pattern {
    position: absolute;
    top: 10%;
    right: 5%;
    width: 400px;
    height: 400px;
    background: linear-gradient(45deg, transparent 30%, var(--color-grey-100) 30%, var(--color-grey-100) 70%, transparent 70%);
    opacity: 0.6;
    transform: rotate(15deg);
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: rotate(15deg) translateY(0);
    }
    50% {
        transform: rotate(15deg) translateY(-30px);
    }
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 1.25rem;
    text-transform: uppercase;
    letter-spacing: -0.01em;
    padding: 1rem 2.5rem;
    border: 2px solid var(--color-black);
    background-color: var(--color-black);
    color: var(--color-white);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background-color: var(--color-grey-800);
    transition: left var(--transition-base);
    z-index: -1;
}

.btn:hover::before {
    left: 0;
}

.btn:hover {
    opacity: 1;
    transform: translateY(-2px);
}

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

.btn-secondary::before {
    background-color: var(--color-grey-100);
}

/* ============================================
   Value Props
   ============================================ */

.values {
    background-color: var(--color-grey-100);
}

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

.value-card {
    background-color: var(--color-white);
    padding: var(--space-lg);
    border: 2px solid var(--color-black);
    transition: transform var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.value-card:nth-child(1) {
    animation-delay: 0.1s;
}

.value-card:nth-child(2) {
    animation-delay: 0.2s;
}

.value-card:nth-child(3) {
    animation-delay: 0.3s;
}

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

.value-card:hover {
    transform: translateY(-8px);
}

.value-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-md);
}

.value-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.value-card p {
    line-height: 1.7;
    color: var(--color-grey-600);
}

/* ============================================
   Intro Section
   ============================================ */

.intro {
    background-color: var(--color-black);
    color: var(--color-white);
}

.intro-content {
    max-width: 900px;
}

.intro-text {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
}

.intro-text:last-child {
    margin-bottom: 0;
}

/* ============================================
   Projects
   ============================================ */

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
}

.project-card {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.project-card:nth-child(1) {
    animation-delay: 0.1s;
}

.project-card:nth-child(2) {
    animation-delay: 0.2s;
}

.project-image {
    width: 100%;
    height: 300px;
    background-color: var(--color-grey-200);
    margin-bottom: var(--space-md);
    overflow: hidden;
    border: 2px solid var(--color-black);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-card h3 {
    font-size: 1.75rem;
    margin-bottom: var(--space-sm);
}

.project-card p {
    line-height: 1.7;
    color: var(--color-grey-600);
}

.link-arrow {
    display: inline-block;
    font-size: 1.25rem;
    font-weight: 600;
    transition: transform var(--transition-base);
}

.link-arrow:hover {
    transform: translateX(8px);
    opacity: 1;
}

/* ============================================
   Projects Detail Page
   ============================================ */

.projects-detail {
    background-color: var(--color-grey-100);
}

.project-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
    background-color: var(--color-white);
    border: 2px solid var(--color-black);
    padding: var(--space-lg);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.project-detail:nth-child(1) {
    animation-delay: 0.1s;
}

.project-detail:nth-child(2) {
    animation-delay: 0.2s;
}

.project-detail:nth-child(3) {
    animation-delay: 0.3s;
}

.project-detail:last-child {
    margin-bottom: 0;
}

.project-detail-image {
    width: 100%;
    height: 400px;
    background-color: var(--color-grey-200);
    overflow: hidden;
}

.project-detail-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.project-detail-content h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.project-section {
    margin-bottom: var(--space-md);
}

.project-section:last-child {
    margin-bottom: 0;
}

.project-section h3 {
    font-size: 1rem;
    font-family: var(--font-body);
    font-weight: 600;
    text-transform: none;
    margin-bottom: var(--space-xs);
}

.project-section p {
    line-height: 1.7;
    color: var(--color-grey-600);
}

/* ============================================
   Mission & About Sections
   ============================================ */

.mission {
    background-color: var(--color-grey-100);
}

.mission-vision {
    max-width: 900px;
    margin-bottom: var(--space-xl);
}

.vision-statement {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    line-height: 1.6;
    font-weight: 500;
}

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

.mission-card {
    background-color: var(--color-white);
    padding: var(--space-lg);
    border: 2px solid var(--color-black);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.mission-card:nth-child(1) {
    animation-delay: 0.1s;
}

.mission-card:nth-child(2) {
    animation-delay: 0.2s;
}

.mission-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.mission-card p {
    line-height: 1.7;
    color: var(--color-grey-600);
}

/* ============================================
   About Me
   ============================================ */

.about-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-xl);
    align-items: start;
}

.about-image {
    width: 100%;
    aspect-ratio: 3/4;
    background-color: var(--color-grey-200);
    border: 2px solid var(--color-black);
    overflow: hidden;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.about-text p {
    font-size: 1.125rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
    color: var(--color-grey-600);
}

.about-text p:last-child {
    margin-bottom: 0;
}

/* ============================================
   Approach
   ============================================ */

.approach {
    background-color: var(--color-grey-100);
}

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

.approach-card {
    background-color: var(--color-white);
    padding: var(--space-lg);
    border: 2px solid var(--color-black);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
}

.approach-card:nth-child(1) {
    animation-delay: 0.1s;
}

.approach-card:nth-child(2) {
    animation-delay: 0.2s;
}

.approach-card:nth-child(3) {
    animation-delay: 0.3s;
}

.approach-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.approach-card p {
    line-height: 1.7;
    color: var(--color-grey-600);
}

/* ============================================
   Closing
   ============================================ */

.closing {
    background-color: var(--color-white);
    color: var(--color-black);
}

.closing-content {
    max-width: 900px;
}

.closing-statement {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: var(--space-md);
}

.closing-text {
    font-size: 1.25rem;
    line-height: 1.7;
}

/* ============================================
   Contact Form
   ============================================ */

.contact-section {
    background-color: var(--color-grey-100);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-xl);
}

.contact-form {
    background-color: var(--color-white);
    padding: var(--space-lg);
    border: 2px solid var(--color-black);
}

.form-group {
    margin-bottom: var(--space-md);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--color-grey-300);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

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

.form-group textarea {
    resize: vertical;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.reassurance {
    padding: var(--space-md);
    background-color: var(--color-white);
    border: 2px solid var(--color-black);
}

.reassurance p {
    margin-bottom: var(--space-sm);
    line-height: 1.7;
}

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

.alternative-contact {
    padding: var(--space-md);
}

.alternative-contact a {
    text-decoration: underline;
}

.form-success {
    max-width: 600px;
    text-align: center;
    margin: 0 auto;
    padding: var(--space-xl);
    background-color: var(--color-white);
    border: 2px solid var(--color-black);
}

.form-success h2 {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.form-success p {
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
    color: var(--color-grey-600);
}

/* ============================================
   Demo Cards
   ============================================ */

.demos {
    background-color: var(--color-grey-100);
}

.demo-card {
    display: block;
    background-color: var(--color-white);
    padding: var(--space-lg);
    border: 2px solid var(--color-black);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.6s ease forwards;
    cursor: pointer;
}

.demo-card:nth-child(1) {
    animation-delay: 0.1s;
}

.demo-card:nth-child(2) {
    animation-delay: 0.2s;
}

.demo-card:nth-child(3) {
    animation-delay: 0.3s;
}

.demo-card:hover {
    transform: translateY(-8px);
    box-shadow: 8px 8px 0 var(--color-black);
    opacity: 1;
}

.demo-card-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-grey-500);
    margin-bottom: var(--space-sm);
}

.demo-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.demo-card p {
    line-height: 1.7;
    color: var(--color-grey-600);
    margin-bottom: var(--space-md);
}

.demo-card-link {
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-black);
}

/* ============================================
   CTA Section
   ============================================ */

.cta {
    background-color: var(--color-black);
    color: var(--color-white);
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-headline {
    font-size: clamp(2rem, 4vw, 3.5rem);
    margin-bottom: var(--space-md);
    color: var(--color-white);
}

.cta-text {
    font-size: 1.25rem;
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    color: var(--color-grey-300);
}

.cta .btn {
    border-color: var(--color-white);
    background-color: var(--color-white);
    color: var(--color-black);
}

.cta .btn::before {
    background-color: var(--color-grey-200);
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--space-xl) 0 var(--space-md);
    border-top: 2px solid var(--color-white);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    text-transform: uppercase;
    margin-bottom: var(--space-xs);
}

.footer-email {
    font-size: 1rem;
    color: var(--color-grey-300);
}

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

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-grey-400);
}

/* ============================================
   404 Error Page
   ============================================ */

.error-page {
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.error-headline {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: var(--space-md);
}

.error-text {
    font-size: 1.25rem;
    color: var(--color-grey-600);
    margin-bottom: var(--space-lg);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 1024px) {
    .project-detail {
        grid-template-columns: 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1.5rem;
        --space-xl: 4rem;
        --space-2xl: 5rem;
    }

    section {
        padding: var(--space-xl) 0;
    }

    .main-nav {
        gap: var(--space-md);
    }

    .value-grid,
    .project-grid,
    .mission-grid,
    .approach-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    .main-nav {
        gap: var(--space-sm);
    }

    .main-nav a {
        font-size: 0.875rem;
    }

    .btn {
        font-size: 1rem;
        padding: 0.875rem 2rem;
    }
}

/* ============================================
   Animation utilities
   ============================================ */

[data-animate] {
    opacity: 0;
    transform: translateY(30px);
}

[data-animate].animated {
    animation: fadeInUp 0.6s ease forwards;
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
    .site-header,
    .hero-visual,
    .cta,
    .site-footer {
        display: none;
    }
}