/* ============================
   BROADCAST LAB — STYLE
   Colors: Black, Lime #c8f542, White
   ============================ */

:root {
    --black: #0a0a0a;
    --black-light: #111111;
    --black-card: #161616;
    --lime: #c8f542;
    --lime-dark: #a8d235;
    --lime-glow: rgba(200, 245, 66, 0.15);
    --white: #ffffff;
    --gray-100: #f5f5f5;
    --gray-200: #e0e0e0;
    --gray-400: #999999;
    --gray-600: #666666;
    --gray-800: #333333;
    --font: 'Outfit', sans-serif;
    --nav-height: 72px;
    --container: 1200px;
    --radius: 16px;
    --radius-sm: 10px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
    font-size: 16px;
}

body {
    font-family: var(--font);
    background: var(--black);
    color: var(--white);
    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: inherit;
    text-decoration: none;
}

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

/* ============================
   NAVIGATION
   ============================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: background 0.3s ease;
}

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

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

.logo-img {
    height: 32px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 8px;
}

.nav-links a {
    display: block;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--gray-200);
    transition: color 0.2s ease;
    border-radius: 8px;
}

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

.nav-cta {
    background: var(--lime) !important;
    color: var(--black) !important;
    font-weight: 600 !important;
    border-radius: 50px !important;
    padding: 10px 24px !important;
    transition: background 0.2s ease, transform 0.2s ease !important;
}

.nav-cta:hover {
    background: var(--lime-dark) !important;
    transform: translateY(-1px);
}

/* Hamburger */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================
   HERO
   ============================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: calc(var(--nav-height) + 40px);
    padding-bottom: 80px;
    overflow: hidden;
}

.hero-bg-gradient {
    position: absolute;
    bottom: -30%;
    left: -20%;
    width: 140%;
    height: 80%;
    background: radial-gradient(ellipse at center bottom, var(--lime-glow) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 860px;
}

.hero-badge {
    display: inline-block;
    padding: 6px 16px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--lime);
    border: 1px solid rgba(200, 245, 66, 0.3);
    border-radius: 50px;
    margin-bottom: 32px;
    animation: fadeInUp 0.6s ease both;
}

.hero h1 {
    font-size: clamp(2.4rem, 5.5vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-sub {
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    line-height: 1.7;
    color: var(--gray-400);
    margin-bottom: 40px;
    max-width: 720px;
    animation: fadeInUp 0.6s ease 0.2s both;
}

/* BUTTONS */
.btn {
    display: inline-block;
    font-family: var(--font);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    border-radius: 50px;
    transition: all 0.25s ease;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.btn-primary {
    background: var(--lime);
    color: var(--black);
    padding: 16px 40px;
}

.btn-primary:hover {
    background: var(--lime-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(200, 245, 66, 0.25);
}

/* ============================
   SECTIONS (general)
   ============================ */
.section {
    padding: 100px 0;
}

.section-label {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--lime);
    margin-bottom: 40px;
}

.label-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--lime);
    border-radius: 50%;
}

.section h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.6rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 48px;
}

/* ============================
   O NÁS
   ============================ */
.section-about {
    background: var(--black);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.about-text {
    max-width: 800px;
}

.about-text .lead {
    font-size: clamp(1.15rem, 2vw, 1.4rem);
    line-height: 1.6;
    color: var(--white);
    margin-bottom: 20px;
    font-weight: 400;
}

.about-text p {
    font-size: 1.05rem;
    color: var(--gray-400);
    line-height: 1.7;
}

/* ============================
   PRO KOHO
   ============================ */
.section-for-whom {
    padding: 80px 0 100px;
}

.for-whom-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.for-whom-card {
    background: var(--black-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius);
    padding: 32px 24px;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.for-whom-card:hover {
    border-color: rgba(200, 245, 66, 0.2);
    transform: translateY(-4px);
}

.fwc-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: rgba(200, 245, 66, 0.1);
    border-radius: var(--radius-sm);
    color: var(--lime);
    margin-bottom: 20px;
}

.for-whom-card p {
    font-size: 0.95rem;
    color: var(--gray-200);
    line-height: 1.5;
}

/* ============================
   JAK PRACUJEME
   ============================ */
.section-process {
    background: var(--black-light);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.process-step {
    position: relative;
}

.process-num {
    font-size: 3rem;
    font-weight: 800;
    color: rgba(200, 245, 66, 0.12);
    line-height: 1;
    margin-bottom: 16px;
}

.process-step h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.3;
}

.process-step p {
    font-size: 0.92rem;
    color: var(--gray-400);
    line-height: 1.6;
}

/* ============================
   SLUŽBY
   ============================ */
.section-services {
    background: var(--black);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.service-card {
    background: var(--black-card);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius);
    padding: 40px 32px;
    transition: border-color 0.3s ease, transform 0.3s ease;
}

.service-card:hover {
    border-color: rgba(200, 245, 66, 0.15);
    transform: translateY(-4px);
}

/* Last card spans full width if odd */
.service-card:last-child:nth-child(odd) {
    grid-column: 1 / -1;
    max-width: 100%;
}

.sc-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: rgba(200, 245, 66, 0.1);
    border-radius: var(--radius-sm);
    color: var(--lime);
    margin-bottom: 24px;
}

.service-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.sc-subtitle {
    font-size: 0.9rem;
    color: var(--lime);
    font-weight: 500;
    margin-bottom: 16px;
}

.service-card > p {
    font-size: 0.95rem;
    color: var(--gray-400);
    line-height: 1.7;
    margin-bottom: 20px;
}

.sc-result {
    padding: 16px 20px;
    background: rgba(200, 245, 66, 0.05);
    border-left: 3px solid var(--lime);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.9rem;
    color: var(--gray-200);
    line-height: 1.5;
}

.sc-result strong {
    color: var(--lime);
}

/* ============================
   PROČ MY
   ============================ */
.section-why {
    background: var(--black-light);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 24px;
}

.why-item {
    text-align: center;
    padding: 24px 16px;
}

.why-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin: 0 auto 16px;
    background: rgba(200, 245, 66, 0.1);
    border-radius: 50%;
    color: var(--lime);
}

.why-item h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.why-item p {
    font-size: 0.88rem;
    color: var(--gray-400);
    line-height: 1.5;
}

/* ============================
   KONTAKT
   ============================ */
.section-contact {
    padding: 120px 0;
    background: var(--black);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

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

.contact-inner h2 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 16px;
}

.contact-inner p {
    font-size: 1.1rem;
    color: var(--gray-400);
    margin-bottom: 32px;
}

.contact-email {
    display: inline-block;
    font-size: clamp(1.3rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--lime);
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s ease;
    padding-bottom: 4px;
}

.contact-email:hover {
    border-color: var(--lime);
}

/* ============================
   FOOTER
   ============================ */
.footer {
    padding: 32px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

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

.footer-copy {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.footer-logo .logo-img {
    height: 24px;
}

/* ============================
   ANIMATIONS
   ============================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll-triggered fade-in */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================
   RESPONSIVE
   ============================ */

/* Tablet landscape */
@media (max-width: 1024px) {
    .for-whom-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .process-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .why-grid {
        grid-template-columns: repeat(3, 1fr);
    }

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

    .service-card:last-child:nth-child(odd) {
        grid-column: auto;
    }
}

/* Tablet portrait */
@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        width: 280px;
        height: 100vh;
        background: var(--black-light);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px 32px 40px;
        gap: 4px;
        transform: translateX(100%);
        transition: transform 0.35s ease;
        border-left: 1px solid rgba(255, 255, 255, 0.06);
    }

    .nav-links.open {
        transform: translateX(0);
    }

    .nav-links a {
        font-size: 1.05rem;
        padding: 12px 0;
    }

    .nav-cta {
        margin-top: 16px;
    }

    .section {
        padding: 72px 0;
    }

    .hero {
        min-height: auto;
        padding-top: calc(var(--nav-height) + 60px);
        padding-bottom: 60px;
    }

    .section h2 {
        margin-bottom: 32px;
    }

    .for-whom-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

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

    .why-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

/* Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero {
        padding-top: calc(var(--nav-height) + 40px);
        padding-bottom: 48px;
    }

    .hero-badge {
        margin-bottom: 24px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-sub {
        font-size: 0.95rem;
    }

    .section {
        padding: 56px 0;
    }

    .for-whom-grid {
        grid-template-columns: 1fr;
    }

    .for-whom-card {
        padding: 24px 20px;
    }

    .service-card {
        padding: 28px 20px;
    }

    .why-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .why-item {
        text-align: left;
        display: flex;
        gap: 16px;
        align-items: flex-start;
        padding: 16px 0;
    }

    .why-icon {
        margin: 0;
        flex-shrink: 0;
    }

    .section-contact {
        padding: 80px 0;
    }

    .contact-email {
        font-size: 1.2rem;
    }

    .process-num {
        font-size: 2.4rem;
    }
}