/* ==========================================================================
   Atelier Lipová — Design systém
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700;800&family=Open+Sans:wght@300;400;500;600;700&display=swap');

:root {
    /* Barvy */
    --color-dark: #2d3b44;
    --color-dark-2: #243038;
    --color-cream: #ecd8bd;
    --color-cream-soft: #f5e8d3;
    --color-brown: #7e5f41;
    --color-brown-hover: #6a4f36;
    --color-bg-soft: #f8f8f8;
    --color-white: #ffffff;
    --color-text: #3a3a3a;
    --color-text-muted: #6b6b6b;
    --color-border: #e7e7e7;

    /* Fonty */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Open Sans', Helvetica, Arial, sans-serif;

    /* Velikosti písma */
    --fs-hero: clamp(2.2rem, 4.5vw, 3.5rem);
    --fs-h1: clamp(2rem, 4vw, 3rem);
    --fs-h2: clamp(1.6rem, 2.8vw, 2.5rem);
    --fs-h3: clamp(1.2rem, 1.8vw, 1.5rem);
    --fs-h4: 1.25rem;
    --fs-body: 0.9375rem;
    --fs-small: 0.8125rem;

    /* Layout */
    --container-max: 1200px;
    --container-padding: 24px;
    --section-py: clamp(60px, 8vw, 110px);

    /* Tvary a stíny */
    --radius: 10px;
    --radius-lg: 20px;
    --radius-full: 999px;
    --shadow-card: 0 4px 20px rgba(45, 59, 68, 0.08);
    --shadow-elev: 0 12px 40px rgba(45, 59, 68, 0.12);

    /* Přechody */
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   Reset & Základní styly
   ========================================================================== */

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

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

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

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.25;
    color: var(--color-dark);
}

h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); }
h4 { font-size: var(--fs-h4); }

p {
    margin-bottom: 1rem;
}

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ==========================================================================
   Container & Layout pomocníci
   ========================================================================== */

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

.container-wide {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding-top: var(--section-py);
    padding-bottom: var(--section-py);
}

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

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

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
    color: var(--color-cream);
}

/* Eyebrow label nad nadpisem */
.eyebrow {
    display: inline-block;
    font-family: var(--font-display);
    font-style: italic;
    font-size: 1.05rem;
    color: var(--color-brown);
    margin-bottom: 12px;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.section-dark .eyebrow {
    color: var(--color-cream);
}

.section-title {
    text-align: center;
    margin-bottom: 24px;
}

.section-lead {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
    color: var(--color-text-muted);
    line-height: 1.8;
}

.section-dark .section-lead {
    color: rgba(255, 255, 255, 0.7);
}

/* ==========================================================================
   Tlačítka
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 36px;
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 500;
    line-height: 1;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.01em;
}

.btn-primary {
    background-color: var(--color-brown);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-dark);
    color: var(--color-white);
    padding-right: 44px;
    letter-spacing: 0.05em;
}

.btn-cream {
    background-color: var(--color-cream);
    color: var(--color-dark);
}

.btn-cream:hover {
    background-color: var(--color-white);
    color: var(--color-dark);
    padding-right: 44px;
    letter-spacing: 0.05em;
}

.btn-outline {
    background-color: transparent;
    color: var(--color-dark);
    border-color: var(--color-dark);
}

.btn-outline:hover {
    background-color: var(--color-dark);
    color: var(--color-white);
}

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

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: background-color var(--transition), padding var(--transition), box-shadow var(--transition);
    padding: 22px 0;
}

/* Na home je hlavička nahoře průhledná */
.site-header.is-transparent {
    background-color: transparent;
}

/* Po scrollu nebo na podstránkách - tmavé pozadí */
.site-header.is-sticky,
.page-has-inner-hero .site-header {
    background-color: var(--color-dark);
    padding: 14px 0;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.18);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--color-cream);
    font-family: var(--font-display);
    line-height: 1.1;
}

.site-logo-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.site-logo-text-small {
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    opacity: 0.85;
    font-family: var(--font-body);
    font-weight: 400;
}

.site-logo-text-large {
    font-size: 1.5rem;
    font-weight: 700;
    font-style: italic;
    color: var(--color-cream);
}

/* Hlavní navigace */
.main-nav {
    display: flex;
    align-items: center;
    gap: 36px;
}

.main-nav a {
    color: var(--color-white);
    font-size: 0.9375rem;
    font-weight: 500;
    position: relative;
    padding: 6px 0;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--color-cream);
    transition: width var(--transition);
}

.main-nav a:hover::after,
.main-nav a.is-active::after {
    width: 100%;
}

.main-nav a.is-active {
    color: var(--color-cream);
}

/* Hamburger */
.menu-toggle {
    display: none;
    width: 36px;
    height: 36px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    z-index: 1100;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-cream);
    transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.menu-toggle.is-open span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   Inner Hero (podstránky)
   ========================================================================== */

.inner-hero {
    position: relative;
    padding-top: 110px;
    overflow: hidden;
    background: linear-gradient(45deg, var(--color-dark) 0%, var(--color-dark) 50%, transparent 50%, transparent 100%),
                url('../img/df-builder-01.webp') no-repeat center center / cover;
    min-height: 360px;
    display: flex;
    align-items: center;
}

.inner-hero-inner {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 60px var(--container-padding);
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 40px;
    min-height: 280px;
}

.inner-hero-content {
    background-color: var(--color-white);
    padding: 48px 44px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-elev);
    position: relative;
    z-index: 2;
}

.inner-hero-content .eyebrow {
    margin-bottom: 8px;
}

.inner-hero h1 {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    margin-bottom: 16px;
    color: var(--color-dark);
    line-height: 1.15;
}

.inner-hero-content p {
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 0;
}

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

.site-footer {
    background-color: var(--color-dark);
    color: rgba(255, 255, 255, 0.75);
    padding-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1.2fr 1fr 1fr;
    gap: 56px;
    margin-bottom: 64px;
}

.footer-col h4 {
    color: var(--color-cream);
    font-family: var(--font-display);
    font-style: italic;
    font-weight: 600;
    font-size: 1.35rem;
    margin-bottom: 24px;
}

.footer-col p {
    font-size: 0.9rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.65);
}

.footer-news-item {
    padding: 0 0 18px;
    margin-bottom: 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-news-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.footer-news-item h5 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: 6px;
    line-height: 1.4;
    transition: color var(--transition);
}

.footer-news-item:hover h5 {
    color: var(--color-cream);
}

.footer-news-item span {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.55);
}

.footer-contact-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-contact-list svg {
    color: var(--color-cream);
    flex-shrink: 0;
    margin-top: 4px;
}

.footer-contact-list a:hover {
    color: var(--color-cream);
}

.footer-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}

.footer-gallery a {
    display: block;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: 4px;
}

.footer-gallery img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow), opacity var(--transition);
}

.footer-gallery a:hover img {
    transform: scale(1.1);
    opacity: 0.85;
}

.footer-bottom {
    padding: 24px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}

.footer-copyright {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.55);
}

.footer-social {
    display: flex;
    gap: 14px;
}

.footer-social a {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--color-white);
    transition: all var(--transition);
}

.footer-social a:hover {
    background-color: var(--color-cream);
    color: var(--color-dark);
    transform: translateY(-2px);
}

/* ==========================================================================
   Fade-in animace (Intersection Observer)
   ========================================================================== */

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

/* ==========================================================================
   Responzivita
   ========================================================================== */

@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 48px;
    }

    .inner-hero-inner {
        gap: 30px;
    }

    .inner-hero-content {
        padding: 36px 30px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-py: 60px;
        --container-padding: 18px;
    }

    .menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background-color: var(--color-dark);
        flex-direction: column;
        gap: 0;
        padding: 90px 24px 32px;
        transform: translateX(100%);
        transition: transform var(--transition);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
        align-items: flex-start;
    }

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

    .main-nav a {
        font-size: 1.1rem;
        width: 100%;
        padding: 14px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .main-nav a::after {
        left: 0;
        transform: none;
    }

    .inner-hero {
        padding-top: 80px;
    }

    .inner-hero-inner {
        grid-template-columns: 1fr;
        padding: 40px var(--container-padding);
    }

    .inner-hero-content {
        padding: 32px 24px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .btn {
        padding: 12px 28px;
        font-size: 0.875rem;
    }

    .site-logo-text-large {
        font-size: 1.2rem;
    }

    .site-logo-icon {
        width: 32px;
        height: 32px;
    }

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