/* ============================================
   Tricksal GmbH — test3 Dark Premium Design
   ============================================ */

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color 0.3s; }
a:hover { color: var(--color-accent); }
ul, ol { list-style: none; }
button { font: inherit; cursor: pointer; border: none; background: none; }

/* --- Custom Properties --- */
:root {
    --space-xs: clamp(0.25rem, 0.5vw, 0.5rem);
    --space-sm: clamp(0.5rem, 1vw, 0.75rem);
    --space-md: clamp(1rem, 2vw, 1.5rem);
    --space-lg: clamp(1.5rem, 3vw, 2.5rem);
    --space-xl: clamp(2rem, 5vw, 4rem);
    --space-2xl: clamp(3rem, 7vw, 6rem);
    --space-3xl: clamp(4rem, 10vw, 8rem);

    --text-sm: clamp(0.8rem, 0.9vw, 0.875rem);
    --text-base: clamp(0.95rem, 1vw, 1.0625rem);
    --text-lg: clamp(1.1rem, 1.3vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1.6vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 2.2vw, 2rem);
    --text-3xl: clamp(1.8rem, 3vw, 2.5rem);
    --text-4xl: clamp(2.2rem, 4vw, 3.5rem);
    --text-5xl: clamp(2.8rem, 5.5vw, 4.5rem);

    --glass-bg: rgba(255, 255, 255, 0.04);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-blur: blur(20px);
    --glass-bg-hover: rgba(255, 255, 255, 0.07);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    --max-width: 1200px;
    --max-width-narrow: 800px;
}


/* ============================================
   NAVIGATION
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background var(--transition-base), backdrop-filter var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    box-shadow: 0 1px 0 var(--glass-border);
}

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

.nav-logo img {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.nav-links a {
    color: var(--color-muted);
    font-size: var(--text-sm);
    letter-spacing: 0.03em;
    transition: color var(--transition-base);
}

.nav-links a:hover {
    color: var(--color-text);
}

.nav-cta {
    padding: 0.5rem 1.25rem;
    background: var(--gradient-primary);
    color: #fff !important;
    border-radius: 100px;
    font-size: var(--text-sm);
    font-weight: 500;
    transition: opacity var(--transition-base), transform var(--transition-base);
}

.nav-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    color: #fff !important;
}

/* Hamburger */
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
    z-index: 1001;
}

.nav-hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: transform var(--transition-base), opacity var(--transition-base);
    border-radius: 1px;
}

.nav-hamburger.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
    opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background-size: cover;
    background-position: center 30%;
    background-repeat: no-repeat;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(ellipse at 50% 40%, rgba(10, 10, 10, 0.35) 0%, rgba(10, 10, 10, 0.7) 50%, var(--color-bg) 85%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: var(--space-xl);
    max-width: 900px;
}

.hero-label {
    display: inline-block;
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #fff;
    margin-bottom: var(--space-md);
    font-weight: 500;
}

.hero-title {
    font-size: var(--text-5xl);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--text-lg);
    color: rgba(245, 245, 245, 0.75);
    max-width: 650px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

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

.hero-scroll-hint {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-muted);
    font-size: var(--text-sm);
    animation: float 2.5s ease-in-out infinite;
}

.hero-scroll-hint .arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--color-muted);
    border-bottom: 2px solid var(--color-muted);
    transform: rotate(45deg);
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}


/* ============================================
   SECTIONS
   ============================================ */
.section {
    padding: var(--space-3xl) var(--space-lg);
}

.section-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-label {
    font-size: var(--text-sm);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

.section-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--color-muted);
    max-width: 650px;
    line-height: 1.7;
}

.section-header {
    margin-bottom: var(--space-2xl);
}

.section-header.center {
    text-align: center;
}

.section-header.center .section-subtitle {
    margin-left: auto;
    margin-right: auto;
}

.section-divider {
    width: 60px;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: 1px;
    margin: var(--space-xl) 0;
}

.section-header.center .section-divider {
    margin-left: auto;
    margin-right: auto;
}


/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: 100px;
    font-size: var(--text-base);
    font-weight: 500;
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.3);
    color: #fff;
}

.btn-outline {
    border: 1px solid var(--glass-border);
    color: var(--color-text);
    background: transparent;
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    transform: translateY(-2px);
}


/* ============================================
   GLASSMORPHISM CARDS
   ============================================ */
.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
    background: var(--glass-bg-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: var(--space-md);
    display: block;
}

.card-title {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.card-text {
    font-size: var(--text-base);
    color: var(--color-muted);
    line-height: 1.7;
}

.card-image {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.85;
    transition: opacity var(--transition-base);
}

.card:hover .card-image img {
    opacity: 1;
}

.card-subtitle {
    font-size: var(--text-sm);
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}


/* ============================================
   GRID LAYOUTS
   ============================================ */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

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

@media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
    .grid-3 { grid-template-columns: 1fr; }
    .grid-2 { grid-template-columns: 1fr; }
}


/* ============================================
   PROJECT CARDS
   ============================================ */
.project-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

.project-card:hover {
    background: var(--glass-bg-hover);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.project-card-image {
    aspect-ratio: 16 / 9;
    background: var(--color-bg-soft);
    overflow: hidden;
    position: relative;
}

.project-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.project-card-body {
    padding: var(--space-lg);
}

.project-card-client {
    font-size: var(--text-sm);
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--space-xs);
    display: block;
}

.project-card-title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.project-card-desc {
    font-size: var(--text-sm);
    color: var(--color-muted);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.project-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.tag {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--color-primary);
    white-space: nowrap;
}


/* ============================================
   FILTER TABS
   ============================================ */
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-2xl);
    justify-content: center;
}

.filter-tab {
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-size: var(--text-sm);
    color: var(--color-muted);
    background: transparent;
    transition: all var(--transition-base);
}

.filter-tab:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.filter-tab.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: #fff;
}


/* ============================================
   CLIENT LOGOS
   ============================================ */
.logos-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-lg) var(--space-xl);
    align-items: center;
    justify-items: center;
    padding: var(--space-xl) 0;
}

.logos-grid img {
    height: 28px;
    width: auto;
    filter: invert(1);
    opacity: 0.4;
    transition: opacity 0.3s ease;
}

.logos-grid img:hover {
    opacity: 0.7;
}

@media (max-width: 640px) {
    .logos-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-lg);
    }
    .logos-grid img {
        height: 22px;
    }
}


/* ============================================
   EXPERTISE
   ============================================ */
.expertise-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.expertise-card h3 {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.expertise-card ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.expertise-card li {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    font-size: var(--text-base);
    color: var(--color-muted);
    line-height: 1.6;
}

.expertise-card li::before {
    content: '\2192';
    color: var(--color-primary);
    flex-shrink: 0;
}


/* ============================================
   STATS / ABOUT
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.stat {
    text-align: center;
    padding: var(--space-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
}

.stat-number {
    font-size: var(--text-4xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: var(--space-xs);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-muted);
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}


/* ============================================
   CONTACT
   ============================================ */
.contact-card {
    max-width: 480px;
    margin: 0 auto;
    text-align: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl) var(--space-xl);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
}

.contact-card h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.contact-card p {
    color: var(--color-muted);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.contact-card a {
    color: var(--color-text);
    transition: color var(--transition-base);
}

.contact-card a:hover {
    color: var(--color-primary);
}


/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.cta-title {
    font-size: var(--text-3xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.cta-text {
    font-size: var(--text-lg);
    color: var(--color-muted);
    max-width: 500px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}


/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: var(--space-2xl) var(--space-lg) var(--space-xl);
    border-top: 1px solid var(--glass-border);
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
}

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

.footer-logo img {
    height: 24px;
    width: auto;
    opacity: 0.6;
}

.footer-copy {
    font-size: var(--text-sm);
    color: var(--color-muted);
}

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

.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-muted);
}

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

@media (max-width: 640px) {
    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
    .footer-left {
        flex-direction: column;
    }
}


/* ============================================
   SCROLL REVEAL ANIMATIONS
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }


/* ============================================
   UTILITY
   ============================================ */
/* ============================================
   LEGAL PAGES
   ============================================ */
.legal-page {
    padding: calc(80px + var(--space-3xl)) var(--space-lg) var(--space-2xl);
}

.legal-content {
    max-width: var(--max-width-narrow);
    margin: 0 auto;
}

.legal-content h1 {
    font-size: var(--text-4xl);
    font-weight: 700;
    margin-bottom: var(--space-2xl);
    letter-spacing: -0.02em;
}

.legal-content h2 {
    font-size: var(--text-2xl);
    font-weight: 600;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.legal-content h3 {
    font-size: var(--text-lg);
    font-weight: 500;
    margin-top: var(--space-xl);
    margin-bottom: var(--space-sm);
}

.legal-content p {
    color: var(--color-muted);
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.legal-content strong {
    color: var(--color-text);
}

.legal-content a {
    color: var(--color-primary);
}


/* ============================================
   ABOUT SECTION (with portrait)
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.about-portrait {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--glass-border);
}

.about-portrait img {
    width: 100%;
    height: auto;
    display: block;
}

.about-body h3 {
    font-size: var(--text-2xl);
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.about-body .about-role {
    font-size: var(--text-base);
    color: var(--color-primary);
    font-weight: 500;
    margin-bottom: var(--space-lg);
}

.about-body p {
    color: var(--color-muted);
    line-height: 1.8;
    margin-bottom: var(--space-md);
    font-size: var(--text-base);
}

.about-body strong {
    color: var(--color-text);
}

.about-highlights {
    display: flex;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--glass-border);
}

.about-highlight {
    text-align: center;
}

.about-highlight-number {
    font-size: var(--text-2xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-highlight-label {
    font-size: var(--text-sm);
    color: var(--color-muted);
    margin-top: var(--space-xs);
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .about-portrait {
        max-width: 240px;
        margin: 0 auto;
    }
    .about-highlights {
        justify-content: center;
        flex-wrap: wrap;
    }
}


.text-center { text-align: center; }
.text-muted { color: var(--color-muted); }
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.mt-xl { margin-top: var(--space-xl); }
.mb-lg { margin-bottom: var(--space-lg); }


/* ============================================
   MOBILE NAV
   ============================================ */
@media (max-width: 768px) {
    .nav-hamburger {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 10, 10, 0.97);
        backdrop-filter: var(--glass-blur);
        -webkit-backdrop-filter: var(--glass-blur);
        flex-direction: column;
        justify-content: center;
        gap: var(--space-xl);
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--transition-base);
    }

    .nav-links.open {
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links a {
        font-size: var(--text-2xl);
        color: var(--color-text);
        text-align: center;
    }

    .nav-cta {
        font-size: var(--text-lg);
        padding: 0.75rem 2rem;
    }

    .hero-cta-group {
        flex-direction: column;
        align-items: center;
    }
}