/* =============================================
   RKTechSolutions - Minimal AI Agency Website
   ============================================= */

/* CSS Variables */
:root {
    --color-bg: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-text: #f5f5f5;
    --color-text-muted: #888888;
    --color-accent: #e85d04;
    --color-accent-hover: #f77f00;
    --color-border: #222222;
    --font-primary: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --container-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
}

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

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

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

/* Watermark */
.watermark {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: clamp(20rem, 40vw, 50rem);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.015);
    pointer-events: none;
    z-index: 0;
    letter-spacing: -0.05em;
    user-select: none;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-md) 0;
    z-index: 100;
    background: linear-gradient(to bottom, var(--color-bg) 0%, transparent 100%);
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 56px;
    width: auto;
    opacity: 0.95;
    transition: opacity var(--transition-fast);
}

.logo-img:hover {
    opacity: 1;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Book a Call Button */
.book-call-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: transparent;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    font-family: var(--font-primary);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    letter-spacing: 0.02em;
}

.book-call-btn svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.book-call-btn:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(232, 93, 4, 0.25);
}

.book-call-btn:active {
    transform: translateY(0);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-xl) 0;
    position: relative;
}

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

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 500;
    line-height: 1.15;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.hero-title .highlight {
    display: block;
    opacity: 0;
    transform: translateY(30px);
    animation: slideUp 0.8s ease forwards;
}

.hero-title .highlight:nth-child(1) {
    animation-delay: 0.2s;
}

.hero-title .highlight:nth-child(2) {
    animation-delay: 0.4s;
    color: var(--color-text-muted);
}

.hero-title .highlight:nth-child(3) {
    animation-delay: 0.6s;
    color: var(--color-accent);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--color-text-muted);
    max-width: 600px;
    font-weight: 300;
    line-height: 1.8;
}

/* Sections */
.section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 500;
    letter-spacing: -0.02em;
}

/* About Section */
.about-content {
    max-width: 700px;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    font-weight: 300;
    line-height: 1.9;
}

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

.about-text strong {
    color: var(--color-text);
    font-weight: 500;
}

/* Services Grid */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.service-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-lg);
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
}

.service-card:hover {
    border-color: var(--color-border);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
    transition: transform var(--transition-fast);
}

.service-card:hover .service-icon {
    transform: scale(1.1);
}

.service-icon svg {
    width: 100%;
    height: 100%;
}

.service-title {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.service-description {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    font-weight: 300;
}

/* Process Section (How We Work) */
.process-steps {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}

.process-step {
    flex: 1;
    min-width: 200px;
    max-width: 260px;
    text-align: center;
    padding: var(--spacing-md);
    position: relative;
}

.step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-bg);
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    position: relative;
    z-index: 2;
}

.step-icon {
    width: 32px;
    height: 32px;
    margin: 0 auto var(--spacing-sm);
    color: var(--color-text-muted);
}

.step-icon svg {
    width: 100%;
    height: 100%;
}

.step-title {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.01em;
}

.step-description {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    font-weight: 300;
}

.process-connector {
    width: 60px;
    height: 2px;
    background: var(--color-border);
    align-self: center;
    margin-top: -80px;
}

/* EU Funding Section */
.funding {
    padding: var(--spacing-lg) 0;
}

.funding-box {
    background: linear-gradient(135deg, rgba(232, 93, 4, 0.1) 0%, rgba(232, 93, 4, 0.02) 100%);
    border: 1px solid rgba(232, 93, 4, 0.3);
    border-radius: 16px;
    padding: var(--spacing-lg);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.funding-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--color-accent);
}

.funding-badge {
    display: inline-block;
    background: var(--color-accent);
    color: var(--color-bg);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-md);
}

.funding-title {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.funding-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    font-weight: 300;
    line-height: 1.7;
}

.funding-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-lg);
}

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

.stat-value {
    display: block;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    color: var(--color-accent);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 300;
}

.funding-requirements {
    background: var(--color-bg-secondary);
    border-radius: 8px;
    padding: var(--spacing-md);
    max-width: 400px;
    margin: 0 auto var(--spacing-lg);
    text-align: left;
}

.requirements-title {
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.requirements-list {
    list-style: none;
}

.requirements-list li {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    padding: 0.25rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-weight: 300;
}

.requirements-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.7rem;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
}

.funding-cta {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--color-accent);
    border: none;
    color: var(--color-bg);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-fast);
    letter-spacing: 0.02em;
}

.funding-cta:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(232, 93, 4, 0.3);
}

/* Industries Section */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.industry-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-md);
    text-align: center;
    transition: all var(--transition-medium);
}

.industry-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.industry-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--spacing-sm);
    color: var(--color-accent);
}

.industry-icon svg {
    width: 100%;
    height: 100%;
}

.industry-title {
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.01em;
}

.industry-description {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    line-height: 1.6;
    font-weight: 300;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-lg);
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-medium);
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-card:hover::before {
    transform: scaleX(1);
}

.project-tag {
    display: inline-block;
    background: rgba(232, 93, 4, 0.15);
    color: var(--color-accent);
    padding: 0.35rem 0.75rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-sm);
}

.project-title {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.project-description {
    font-size: 0.95rem;
    color: var(--color-text-muted);
    line-height: 1.7;
    font-weight: 300;
    margin-bottom: var(--spacing-md);
}

.project-benefit {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--color-border);
}

.project-benefit svg {
    width: 18px;
    height: 18px;
    color: var(--color-accent);
    flex-shrink: 0;
}

.project-benefit span {
    font-size: 0.9rem;
    color: var(--color-text);
    font-weight: 400;
}

/* Testimonial Section */
.testimonial {
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
}

.testimonial-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.testimonial-quote {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.quote-icon {
    width: 48px;
    height: 48px;
    color: var(--color-accent);
    opacity: 0.3;
    margin-bottom: var(--spacing-md);
}

.testimonial-quote blockquote {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 300;
    line-height: 1.8;
    color: var(--color-text);
    font-style: italic;
    margin: 0;
}

.testimonial-author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
}

.author-photo {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-accent);
    box-shadow: 0 4px 20px rgba(232, 93, 4, 0.2);
}

.author-info {
    text-align: left;
}

.author-name {
    display: block;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}

.author-title {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    font-weight: 300;
}

/* FAQ Section */
.faq {
    border-top: 1px solid var(--color-border);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    background: transparent;
    border: none;
    color: var(--color-text);
    font-family: var(--font-primary);
    font-size: 1.1rem;
    font-weight: 500;
    text-align: left;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-accent);
}

.faq-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    transition: transform var(--transition-fast);
    color: var(--color-text-muted);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    color: var(--color-accent);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-medium), padding var(--transition-medium);
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-bottom: var(--spacing-md);
}

.faq-answer p {
    font-size: 1rem;
    color: var(--color-text-muted);
    line-height: 1.8;
    font-weight: 300;
}

/* CTA Section */
.cta {
    text-align: center;
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
}

.cta-content {
    max-width: 500px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.02em;
}

.cta-text {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
    font-weight: 300;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: transparent;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: 6px;
    transition: all var(--transition-fast);
    letter-spacing: 0.02em;
}

.cta-button:hover {
    background: var(--color-accent);
    color: var(--color-bg);
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(232, 93, 4, 0.2);
}

/* Footer */
.footer {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
}

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

.copyright {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-weight: 300;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animation Classes */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
}

.fade-in.visible {
    animation: fadeIn 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s !important; }
.delay-2 { animation-delay: 0.2s !important; }
.delay-3 { animation-delay: 0.3s !important; }
.delay-4 { animation-delay: 0.4s !important; }
.delay-5 { animation-delay: 0.5s !important; }
.delay-6 { animation-delay: 0.6s !important; }
.delay-7 { animation-delay: 0.7s !important; }
.delay-8 { animation-delay: 0.8s !important; }

/* Responsive */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 5rem;
    }

    .hero {
        padding-top: calc(var(--spacing-xl) + 60px);
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .service-card {
        padding: var(--spacing-md);
    }

    .watermark {
        font-size: 15rem;
    }

    /* Process steps responsive */
    .process-steps {
        flex-direction: column;
        align-items: center;
    }

    .process-step {
        max-width: 100%;
    }

    .process-connector {
        width: 2px;
        height: 30px;
        margin: 0;
    }

    /* Funding responsive */
    .funding-stats {
        gap: var(--spacing-md);
    }

    .funding-box {
        padding: var(--spacing-md);
    }

    /* Industries responsive */
    .industries-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Projects responsive */
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .project-card {
        padding: var(--spacing-md);
    }

    /* Testimonial responsive */
    .author-photo {
        width: 64px;
        height: 64px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .hero-title {
        font-size: 2rem;
    }

    .cta-button {
        padding: 0.875rem 2rem;
        font-size: 0.9rem;
    }

    .book-call-btn {
        padding: 0.625rem 1rem;
        font-size: 0.8rem;
    }

    .book-call-btn svg {
        width: 16px;
        height: 16px;
    }

    /* Industries on mobile */
    .industries-grid {
        grid-template-columns: 1fr;
    }

    .industry-card {
        padding: var(--spacing-sm);
    }

    /* Funding on mobile */
    .stat-value {
        font-size: 1.75rem;
    }

    .funding-cta {
        padding: 0.875rem 1.5rem;
        font-size: 0.9rem;
    }

    .funding-requirements {
        padding: var(--spacing-sm);
    }

    /* Testimonial on mobile */
    .testimonial-author {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

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

    .author-photo {
        width: 80px;
        height: 80px;
    }

    .quote-icon {
        width: 36px;
        height: 36px;
    }
}

/* Selection */
::selection {
    background: var(--color-accent);
    color: var(--color-bg);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}