/* ========================================
   CLAYCON - Modern Corporate Website
   ======================================== */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #1a1a2e;
    --color-primary-light: #2d2d44;
    --color-accent: #B8964C;
    --color-accent-hover: #9A7D3E;
    --color-text: #1a1a2e;
    --color-text-light: #6b7280;
    --color-text-lighter: #9ca3af;
    --color-white: #ffffff;
    --color-bg: #ffffff;
    --color-bg-light: #f8f9fa;
    --color-bg-dark: #f3f4f6;
    --color-border: #e5e7eb;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-heading: 'Outfit', 'Inter', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Other */
    --border-radius: 4px;
    --border-radius-lg: 8px;
    --transition: all 0.3s ease;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
    --header-height: 95px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ========================================
   HEADER & NAVIGATION
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(248, 249, 250, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
    overflow: visible;
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
    border-bottom-color: var(--color-border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
}

.logo {
    display: flex;
    align-items: center;
    height: var(--header-height);
    overflow: hidden;
    margin-left: -1cm;
}

.logo-img {
    height: 240%;
    width: auto;
    position: relative;
    top: 3mm;
}

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

.nav-link {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text);
    padding: var(--spacing-sm) 0;
    position: relative;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link-cta {
    background: var(--color-accent);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
}

.nav-link-cta::after {
    display: none;
}

.nav-link-cta:hover {
    background: var(--color-accent-hover);
}

/* Language Switcher */
.nav-lang {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-sm);
    padding-left: var(--spacing-md);
    border-left: 1px solid var(--color-border);
}

.lang-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
    padding: 4px 8px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.lang-link:hover {
    color: var(--color-primary);
    background: var(--color-bg-light);
}

.lang-link.lang-active {
    color: var(--color-primary);
    font-weight: 600;
}

.lang-divider {
    color: var(--color-border);
    font-weight: 300;
}

/* Mobile Navigation */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.hamburger {
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    bottom: -7px;
}

.nav-toggle.active .hamburger {
    background: transparent;
}

.nav-toggle.active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav-toggle.active .hamburger::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 2rem;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--border-radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border-color: var(--color-white);
}

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

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: var(--font-size-base);
}

.btn-full {
    width: 100%;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.85) 0%, rgba(22, 33, 62, 0.75) 50%, rgba(15, 52, 96, 0.7) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: var(--color-white);
    padding: var(--spacing-3xl) 0;
    max-width: 900px;
}

.hero-title {
    font-family: var(--font-family-heading);
    font-size: clamp(1.8rem, 4vw, 3.2rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-family: var(--font-family-heading);
    font-size: clamp(0.9rem, 1.5vw, var(--font-size-lg));
    font-weight: 400;
    opacity: 0.8;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    letter-spacing: 4px;
    text-transform: lowercase;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease 0.4s both;
}

.hero-buttons .btn {
    min-width: 200px;
    text-align: center;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 0;
    right: 0;
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0;
    text-align: center;
    opacity: 0.7;
    animation: fadeInUp 1s ease 0.6s both;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.hero-scroll:hover {
    opacity: 1;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-white), transparent);
    animation: scrollPulse 2s ease infinite;
}

/* ========================================
   SECTIONS
   ======================================== */
.section {
    padding: var(--spacing-3xl) 0;
}

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

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

.section-label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: clamp(1.75rem, 4vw, var(--font-size-4xl));
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
}

.section-title-gold {
    color: var(--color-accent);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
    margin-top: var(--spacing-sm);
    max-width: 600px;
}

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

/* ========================================
   ABOUT SECTION
   ======================================== */
.section-about {
    background: var(--color-bg);
}

.about-dual-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto repeat(4, 1fr);
    gap: var(--spacing-md) var(--spacing-3xl);
}

.about-column {
    display: contents;
}

.about-column-header {
    margin-bottom: var(--spacing-sm);
}

.about-column:first-child .about-column-header {
    grid-column: 1;
    grid-row: 1;
}

.about-column:last-child .about-column-header {
    grid-column: 2;
    grid-row: 1;
}

.about-column-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.3;
}

.about-column-content {
    display: contents;
}

/* Explicitní umístění karet do gridu - levá strana */
.about-column:first-child .about-service-item:nth-child(1) { grid-column: 1; grid-row: 2; }
.about-column:first-child .about-service-item:nth-child(2) { grid-column: 1; grid-row: 3; }
.about-column:first-child .about-service-item:nth-child(3) { grid-column: 1; grid-row: 4; }
.about-column:first-child .about-service-item:nth-child(4) { grid-column: 1; grid-row: 5; }

/* Explicitní umístění karet do gridu - pravá strana */
.about-column:last-child .about-value-item:nth-child(1) { grid-column: 2; grid-row: 2; }
.about-column:last-child .about-value-item:nth-child(2) { grid-column: 2; grid-row: 3; }
.about-column:last-child .about-value-item:nth-child(3) { grid-column: 2; grid-row: 4; }
.about-column:last-child .about-value-item:nth-child(4) { grid-column: 2; grid-row: 5; }

/* Společné styly pro karty */
.about-service-item,
.about-value-item {
    padding: var(--spacing-md);
    background: var(--color-bg-light);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}

/* Levá strana - služby */
.about-service-item {
    border-left: 3px solid var(--color-primary);
}

.about-service-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.about-service-item h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-primary);
    margin: 0 0 var(--spacing-xs) 0;
}

.about-service-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.6;
    margin: 0;
    text-align: justify;
}

/* Pravá strana - hodnoty */
.about-value-item {
    border-left: 3px solid var(--color-accent);
}

.about-value-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
    background: var(--color-primary);
}

.about-value-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-primary);
    margin: 0 0 var(--spacing-xs) 0;
    transition: var(--transition);
}

.about-value-item:hover .about-value-title {
    color: var(--color-white);
}

.about-value-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.6;
    margin: 0;
    text-align: justify;
    transition: var(--transition);
}

.about-value-item:hover .about-value-text {
    color: rgba(255, 255, 255, 0.85);
}

/* ========================================
   VALUES SECTION
   ======================================== */
.section-values {
    background: var(--color-primary);
    padding: var(--spacing-2xl) 0;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
}

.value-card {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--color-white);
}

.value-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
}

.value-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--color-accent);
}

.value-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.value-text {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    line-height: 1.6;
}

/* ========================================
   SERVICES SECTION
   ======================================== */
.section-services {
    background: var(--color-bg-light);
}

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

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

.service-card {
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.service-image {
    height: 180px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.service-illustration {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 50%;
}

.service-image-placeholder {
    width: 60px;
    height: 60px;
}

.service-image-placeholder svg {
    width: 100%;
    height: 100%;
    stroke: rgba(255, 255, 255, 0.5);
}

.service-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.service-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.service-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
    line-height: 1.7;
    text-align: justify;
    flex-grow: 1;
    line-height: 1.6;
}

.service-list {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-md) 0;
    flex-grow: 1;
}

.service-list li {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.6;
    padding-left: 1.2em;
    position: relative;
    margin-bottom: var(--spacing-xs);
}

.service-list li::before {
    content: "•";
    color: var(--color-accent);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.service-link {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
}

.service-link:hover {
    color: var(--color-accent-hover);
}

/* ========================================
   PROJECTS SECTION
   ======================================== */
.section-projects {
    background: var(--color-bg);
}

.projects-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
    background: transparent;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    color: var(--color-white);
    background: var(--color-primary);
    border-color: var(--color-primary);
}

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

.project-card {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.project-image {
    position: relative;
    height: 280px;
}

.project-image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.project-card:nth-child(2) .project-image-placeholder {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.project-card:nth-child(3) .project-image-placeholder {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.project-card:nth-child(4) .project-image-placeholder {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.project-card:nth-child(5) .project-image-placeholder {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.project-card:nth-child(6) .project-image-placeholder {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    display: flex;
    align-items: flex-end;
    padding: var(--spacing-md);
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-category {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-white);
    background: var(--color-accent);
    padding: 4px 12px;
    border-radius: var(--border-radius);
}

.project-content {
    padding: var(--spacing-md);
    background: var(--color-white);
}

.project-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.project-location {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* ========================================
   TEAM SECTION
   ======================================== */
.section-team {
    background: var(--color-bg);
}

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

.team-card {
    border-radius: var(--border-radius-lg);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    padding: var(--spacing-lg);
    border-left: 3px solid var(--color-accent);
}

.team-card:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.team-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.team-role {
    font-size: var(--font-size-sm);
    color: var(--color-accent);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.team-bio {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.6;
    text-align: left;
    margin-bottom: var(--spacing-sm);
}

.team-linkedin {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: #0a66c2;
    text-decoration: none;
    transition: var(--transition);
}

.team-linkedin:hover {
    color: #004182;
    text-decoration: underline;
}

/* ========================================
   REFERENCE SECTION
   ======================================== */
.section-reference {
    background: var(--color-bg-light);
}

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

.reference-item {
    display: flex;
    flex-direction: column;
}

.reference-item-title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--spacing-md);
    line-height: 1.3;
    letter-spacing: -0.02em;
}

.reference-item-title-gold {
    color: var(--color-accent);
    text-align: left;
}

.reference-card {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    cursor: pointer;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    aspect-ratio: 4 / 5;
}

.reference-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.reference-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.reference-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    pointer-events: none;
}

.reference-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    box-shadow: inset 0 0 80px 50px rgba(26, 26, 46, 0.7);
    z-index: 1;
    pointer-events: none;
}

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

.reference-card:hover .reference-image img,
.reference-card:hover .reference-image svg {
    transform: scale(1.05);
}

.reference-image-svg {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

.reference-image-svg svg {
    object-fit: cover;
}

.reference-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 26, 46, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    z-index: 3;
}

.reference-card:hover .reference-overlay {
    opacity: 1;
    visibility: visible;
}

.reference-overlay-content {
    text-align: center;
    color: var(--color-white);
    transform: translateY(20px);
    transition: transform 0.4s ease 0.1s;
}

.reference-card:hover .reference-overlay-content {
    transform: translateY(0);
}

.reference-overlay-title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
    letter-spacing: -0.02em;
}

.reference-overlay-text {
    font-size: var(--font-size-sm);
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.85);
    text-align: justify;
    margin-bottom: var(--spacing-md);
}

.reference-year {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-accent);
    background: rgba(30, 58, 138, 0.15);
    padding: 6px 16px;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-accent);
}

/* Partners Section */
.partners-section {
    margin-top: var(--spacing-3xl);
    text-align: center;
}

.partners-title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: 400;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
    text-align: left;
    letter-spacing: -0.02em;
}

.partners-image {
    max-width: 70%;
    height: auto;
    margin: 0 auto;
    display: block;
    mix-blend-mode: multiply;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Mobile touch support */
@media (hover: none) {
    .reference-card {
        aspect-ratio: auto;
    }

    .reference-image {
        position: relative;
        height: 200px;
    }

    .reference-overlay {
        position: relative;
        opacity: 1;
        visibility: visible;
        background: var(--color-bg-light);
        padding: var(--spacing-md);
    }

    .reference-overlay-content {
        transform: none;
        color: var(--color-text);
    }

    .reference-overlay-title {
        color: var(--color-primary);
        font-size: var(--font-size-lg);
    }

    .reference-overlay-text {
        color: var(--color-text-light);
    }

    /* Team cards responsive */
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   CONTACT SECTION
   ======================================== */
.section-contact {
    background: var(--color-bg-dark);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
    align-items: stretch;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    transition: var(--transition);
}

.contact-card:hover {
    box-shadow: var(--shadow);
}

.contact-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-accent);
}

.contact-details h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.contact-details p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.5;
}

.contact-details a {
    color: var(--color-accent);
}

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

/* Contact Form */
.contact-form-wrapper {
    background: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
    justify-content: space-between;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.form-group label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.625rem 0.875rem;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    background: var(--color-bg-light);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    background: var(--color-white);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-checkbox {
    flex-direction: row;
    align-items: center;
}

.form-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--color-accent);
}

.form-checkbox label {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scrollPulse {
    0%, 100% {
        opacity: 0.6;
        transform: scaleY(1);
    }
    50% {
        opacity: 1;
        transform: scaleY(1.2);
    }
}

/* Scroll Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

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

/* Tablet */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .services-grid-3 {
        grid-template-columns: 1fr;
    }

    .services-grid-3 .service-card {
        max-width: 600px;
        margin: 0 auto;
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .reference-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .reference-grid .reference-item:last-child {
        grid-column: 1 / -1;
        max-width: 50%;
        margin: 0 auto;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --header-height: 85px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: var(--color-white);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-lg);
        transition: var(--transition);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        font-size: var(--font-size-xl);
    }

    .nav-lang {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        margin-top: var(--spacing-md);
        padding-top: var(--spacing-md);
        border-top: 1px solid var(--color-border);
    }

    .lang-link {
        font-size: var(--font-size-lg);
        padding: 8px 16px;
    }

    .hero-video {
        display: none;
    }

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

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .about-dual-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
        gap: var(--spacing-md);
    }

    .about-column {
        display: flex;
        flex-direction: column;
    }

    .about-column-header {
        margin-bottom: var(--spacing-md);
    }

    .about-column:first-child .about-column-header,
    .about-column:last-child .about-column-header {
        grid-column: auto;
        grid-row: auto;
    }

    .about-column-content {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .about-column:first-child .about-service-item:nth-child(1),
    .about-column:first-child .about-service-item:nth-child(2),
    .about-column:first-child .about-service-item:nth-child(3),
    .about-column:first-child .about-service-item:nth-child(4),
    .about-column:last-child .about-value-item:nth-child(1),
    .about-column:last-child .about-value-item:nth-child(2),
    .about-column:last-child .about-value-item:nth-child(3),
    .about-column:last-child .about-value-item:nth-child(4) {
        grid-column: auto;
        grid-row: auto;
    }

    .about-column:last-child {
        margin-top: var(--spacing-xl);
    }

    .about-column-title {
        font-size: var(--font-size-xl);
    }

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

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

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

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

    .reference-grid .reference-item:last-child {
        max-width: 100%;
    }

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

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

    .form-row {
        grid-template-columns: 1fr;
    }
}

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

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .contact-form-wrapper {
        padding: var(--spacing-md);
    }

    .projects-filter {
        gap: var(--spacing-xs);
    }

    .filter-btn {
        padding: 6px 12px;
        font-size: var(--font-size-xs);
    }
}

/* Print Styles */
@media print {
    .header,
    .hero-scroll,
    .contact-form-wrapper {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }

    .section {
        padding: var(--spacing-lg) 0;
    }
}