/* ============================================
   FAIRCONNECT UG – Stylesheet
   Design: Dunkel + Blau, Modern, Serioes
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
    --color-bg-primary: #0a0e17;
    --color-bg-secondary: #0f1520;
    --color-bg-card: #141c2b;
    --color-bg-card-hover: #1a2438;
    --color-accent: #2d7ff9;
    --color-accent-light: #5a9dff;
    --color-accent-glow: rgba(45, 127, 249, 0.15);
    --color-accent-glow-strong: rgba(45, 127, 249, 0.3);
    --color-text-primary: #e8ecf4;
    --color-text-secondary: #8a94a6;
    --color-text-muted: #5a6478;
    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-light: rgba(255, 255, 255, 0.1);
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --container-max: 1140px;
    --nav-height: 72px;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

a {
    color: var(--color-accent-light);
    text-decoration: none;
    transition: color var(--transition-base);
}

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

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

/* --- Container --- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    z-index: 1000;
    background: rgba(10, 14, 23, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition-base);
}

.nav--scrolled {
    background: rgba(10, 14, 23, 0.95);
}

.nav__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    text-decoration: none;
}

.nav__logo-fair {
    color: var(--color-text-primary);
}

.nav__logo-connect {
    color: var(--color-accent);
}

.nav__menu {
    display: flex;
    list-style: none;
    gap: 36px;
}

.nav__link {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    text-decoration: none;
    position: relative;
    padding: 4px 0;
    transition: color var(--transition-base);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

.nav__link:hover {
    color: var(--color-text-primary);
}

.nav__link:hover::after {
    width: 100%;
}

/* Mobile Toggle */
.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav__toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: var(--transition-base);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--nav-height) 24px 60px;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(45, 127, 249, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(45, 127, 249, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero__bg::before {
    content: '';
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 760px;
}

.hero__badge {
    display: inline-block;
    padding: 8px 20px;
    border: 1px solid var(--color-border-light);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent-light);
    margin-bottom: 32px;
    background: var(--color-accent-glow);
}

.hero__title {
    font-size: clamp(2.5rem, 6vw, 4.2rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    color: var(--color-text-primary);
}

.hero__title--accent {
    color: var(--color-accent);
}

.hero__subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 580px;
    margin: 0 auto;
}

.hero__line {
    width: 60px;
    height: 3px;
    background: var(--color-accent);
    margin: 40px auto 0;
    border-radius: 2px;
}

.hero__scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.hero__scroll-arrow {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.2); }
}

/* --- Sections --- */
.section {
    padding: 120px 0;
    position: relative;
}

.section--dark {
    background: var(--color-bg-secondary);
}

.section__label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.section__title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 60px;
    color: var(--color-text-primary);
}

/* --- About Section --- */
.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.about__text p {
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.about__stats {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.stat {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    padding: 24px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    transition: border-color var(--transition-base), background var(--transition-base);
}

.stat:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-card-hover);
}

.stat__icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--color-accent-glow);
    color: var(--color-accent);
}

.stat__icon svg {
    width: 22px;
    height: 22px;
}

.stat__text strong {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.stat__text span {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* --- Services Section --- */
.services__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.service-card {
    padding: 40px 36px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    transition: transform var(--transition-base), border-color var(--transition-base), background var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(45, 127, 249, 0.2);
    background: var(--color-bg-card-hover);
}

.service-card:hover::before {
    opacity: 1;
}

.service-card__number {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.05em;
    margin-bottom: 20px;
    font-variant-numeric: tabular-nums;
}

.service-card__title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

.service-card__text {
    color: var(--color-text-secondary);
    font-size: 0.92rem;
    line-height: 1.7;
}

/* --- Philosophy Section --- */
.philosophy {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.philosophy__item {
    position: relative;
    padding-top: 24px;
}

.philosophy__line {
    width: 40px;
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
    margin-bottom: 20px;
    transition: width var(--transition-base);
}

.philosophy__item:hover .philosophy__line {
    width: 60px;
}

.philosophy__item h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 12px;
}

.philosophy__item p {
    color: var(--color-text-secondary);
    font-size: 0.92rem;
    line-height: 1.7;
}

/* --- Contact Section --- */
.contact {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.contact__card {
    padding: 40px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
}

.contact__card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 28px;
    color: var(--color-text-primary);
}

.contact__detail {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    margin-bottom: 20px;
    color: var(--color-text-secondary);
    font-size: 0.95rem;
}

.contact__detail:last-child {
    margin-bottom: 0;
}

.contact__detail svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-accent);
    margin-top: 2px;
}

.contact__detail a {
    color: var(--color-text-secondary);
    transition: color var(--transition-base);
}

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

.contact__map-placeholder {
    height: 100%;
    min-height: 280px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    color: var(--color-text-muted);
}

.contact__map-placeholder svg {
    opacity: 0.4;
}

.contact__map-placeholder p {
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

/* --- CTA Buttons --- */
.hero__cta {
    display: inline-block;
    margin-top: 36px;
    padding: 12px 26px;
    background: rgba(45, 127, 249, 0.12);
    color: rgba(180, 210, 255, 0.9);
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    border-radius: 6px;
    border: 1px solid rgba(45, 127, 249, 0.25);
    text-decoration: none;
    transition: background var(--transition-base), border-color var(--transition-base), color var(--transition-base);
}

.hero__cta:hover {
    background: rgba(45, 127, 249, 0.2);
    border-color: rgba(45, 127, 249, 0.45);
    color: #fff;
}

.section__cta {
    margin-top: 48px;
}

.cta-button {
    display: inline-block;
    padding: 14px 28px;
    font-size: 0.88rem;
    font-weight: 500;
    letter-spacing: 0.01em;
    border-radius: 8px;
    text-decoration: none;
    transition: all var(--transition-base);
}

.cta-button--secondary {
    background: transparent;
    color: var(--color-accent-light);
    border: 1px solid rgba(45, 127, 249, 0.3);
}

.cta-button--secondary:hover {
    background: var(--color-accent-glow);
    border-color: var(--color-accent);
    color: #fff;
    transform: translateY(-2px);
}

/* --- Footer --- */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-primary);
}

.footer__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.footer__tagline {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.footer__links {
    display: flex;
    gap: 32px;
}

.footer__links a {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    transition: color var(--transition-base);
}

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

.footer__bottom {
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.footer__bottom p {
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

/* --- Animations --- */
[data-animate] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-animate].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive Design --- */
@media (max-width: 968px) {
    .about__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .philosophy {
        grid-template-columns: 1fr;
        gap: 32px;
    }

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

@media (max-width: 768px) {
    .nav__menu {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10, 14, 23, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        padding: 24px;
        gap: 0;
        border-bottom: 1px solid var(--color-border);
    }

    .nav__menu.is-open {
        display: flex;
    }

    .nav__menu li {
        border-bottom: 1px solid var(--color-border);
    }

    .nav__menu li:last-child {
        border-bottom: none;
    }

    .nav__link {
        display: block;
        padding: 16px 0;
    }

    .nav__toggle {
        display: flex;
    }

    .section {
        padding: 80px 0;
    }

    .section__title {
        margin-bottom: 40px;
    }

    .hero {
        padding-top: calc(var(--nav-height) + 40px);
        min-height: 90vh;
    }

    .hero__badge {
        margin-bottom: 24px;
    }

    .hero__subtitle {
        font-size: 0.95rem;
    }

    .footer__content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .service-card {
        padding: 28px 24px;
    }

    .contact__card {
        padding: 28px 24px;
    }
}