/* static/css/style.css */
:root {
    /* Core Palette */
    --color-background-main: #F8F9FA; /* Very light, almost off-white warm gray */
    --color-background-card: #FFFFFF; /* Pure white for content cards/sections */
    --color-primary: #0A2342; /* Deep, rich navy blue (for text, primary accents) */
    --color-secondary: #2CA5E0; /* Bright, clean blue (for secondary accents, icons) */
    --color-accent-gold: #B8860B; /* DarkGoldenRod - more subtle than pure gold, for thin lines, highlights */

    /* Text Palette */
    --color-text-primary: var(--color-primary);
    --color-text-secondary: #343A40; /* Darker gray for better readability on light bg */
    --color-text-on-dark-bg: #F8F9FA; /* For text on primary color background */
    --color-text-muted: #6C757D; /* Muted text for less important info */

    /* Border Palette */
    --color-border-subtle: rgba(10, 35, 66, 0.1);
    --color-border-accent: var(--color-accent-gold);

    /* Typography */
    --font-family-headings: 'Roboto', sans-serif;
    --font-family-body: 'Roboto', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 900;

    /* Spacing & Sizing */
    --space-unit: 1rem; /* 16px */
    --space-xs: calc(var(--space-unit) * 0.5); /* 8px */
    --space-sm: var(--space-unit); /* 16px */
    --space-md: calc(var(--space-unit) * 1.5); /* 24px */
    --space-lg: calc(var(--space-unit) * 2.5); /* 40px */
    --space-xl: calc(var(--space-unit) * 4); /* 64px */
    --space-xxl: calc(var(--space-unit) * 6); /* 96px */

    /* Borders & Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --border-thin: 1px solid var(--color-border-subtle);

    /* Transitions */
    --transition-duration-short: 0.2s;
    --transition-duration-medium: 0.4s;
    --transition-timing-function: cubic-bezier(0.645, 0.045, 0.355, 1);
    --transition-default: all var(--transition-duration-medium) var(--transition-timing-function);

    /* Shadows (used sparingly) */
    --shadow-soft: 0 4px 12px rgba(10, 35, 66, 0.05);
    --shadow-medium: 0 8px 24px rgba(10, 35, 66, 0.08);
    --shadow-strong: 0 12px 32px rgba(10, 35, 66, 0.12);

    /* Layout */
    --container-max-width: 1240px;
    --container-padding-x: var(--space-lg);
    --header-height: 80px;
    --header-height-scrolled: 60px;
}

/* Global Styles */
*, *::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-body);
    color: var(--color-text-secondary);
    background-color: var(--color-background-main);
    overflow-x: hidden;
    line-height: 1.6;
}

body.no-scroll {
    overflow: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-headings);
    color: var(--color-text-primary);
    line-height: 1.2;
}

h1 {
    font-size: clamp(2.5rem, 5.5vw, 4.5rem);
    font-weight: var(--font-weight-black);
    margin-bottom: var(--space-md);
}

h2.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-sm);
    position: relative;
    display: inline-block;
    font-weight: var(--font-weight-bold);
}

h2.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 50px;
    height: 3px;
    background-color: var(--color-secondary);
}

h2.section-title--on-dark {
    color: var(--color-text-on-dark-bg);
}

h2.section-title--on-dark::after {
    background-color: var(--color-accent-gold);
}

.section-header.text-center h2.section-title::after {
    left: 50%;
    transform: translateX(-50%);
}

h3 {
    font-size: clamp(1.5rem, 2.8vw, 2rem);
    margin-bottom: var(--space-md);
    font-weight: var(--font-weight-medium);
}

h4 {
    font-size: clamp(1.1rem, 2vw, 1.25rem);
    margin-bottom: var(--space-xs);
    font-weight: var(--font-weight-semibold);
}

p {
    margin-bottom: var(--space-md);
    font-size: clamp(1rem, 1.8vw, 1.1rem);
    max-width: 65ch;
}

.text-center p {
    margin-left: auto;
    margin-right: auto;
}

p:last-child {
    margin-bottom: 0;
}

p.lead {
    font-size: clamp(1.15rem, 2.2vw, 1.375rem);
    font-weight: var(--font-weight-light);
    color: var(--color-text-primary);
    line-height: 1.5;
    margin-bottom: var(--space-md);
}

p.lead--on-dark {
    color: rgba(248, 249, 250, 0.9);
}

.text--on-dark {
    color: rgba(248, 249, 250, 0.8);
}

a {
    color: var(--color-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-duration-short) ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

a:hover, a:focus {
    color: var(--color-primary);
}

/* Icons */
.icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    stroke-width: 0;
    stroke: currentColor;
    fill: currentColor;
    vertical-align: middle;
    font-size: 1.2rem;
}

.icon--xlarge {
    font-size: 3rem;
    margin-bottom: var(--space-sm);
}

.color-primary {
    color: var(--color-primary);
}

/* Utilities */
.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding-x);
    padding-right: var(--container-padding-x);
}

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

/* Sections */
.pres-section {
    padding: var(--space-xxl) 0;
    position: relative;
    overflow: hidden;
}

.pres-section:nth-child(even) {
    background-color: var(--color-background-card);
}

.pres-section:first-of-type {
    padding: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

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

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-primary);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity var(--transition-duration-medium) ease, visibility var(--transition-duration-medium) ease;
}

.preloader.fade-out {
    opacity: 0;
    visibility: hidden;
}

.preloader__logo img {
    max-width: 150px;
    height: auto;
    filter: brightness(0) invert(1);
    animation: pulse 2s infinite ease-in-out;
}

.preloader__spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--color-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-top: var(--space-lg);
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%, 100% { opacity: 0.7; transform: scale(0.95); } 50% { opacity: 1; transform: scale(1); } }

/* Header */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    height: var(--header-height);
    background-color: transparent;
    left: 50%;
    transform: translateX(-50%);
    transition: background-color var(--transition-duration-medium) ease, height var(--transition-duration-medium) ease, box-shadow var(--transition-duration-medium) ease, margin var(--transition-duration-medium) ease, border-radius var(--transition-duration-medium) ease, all var(--transition-duration-medium) ease;
}

.site-header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    height: var(--header-height-scrolled);
    box-shadow: var(--shadow-medium);
    margin: 10px;
    max-width: calc(100% - 20px);
    width: calc(80% - 20px);
    border-radius: 12px;
    left: 50%;
    transform: translateX(-50%);
}

.site-header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.site-header__logo-img {
    height: 40px;
    transition: filter var(--transition-duration-medium) ease;
}

.site-header:not(.scrolled):not(.menu-is-open) .site-header__logo-img {
    filter: brightness(0) invert(1);
}

.site-header.scrolled .site-header__logo-img,
.site-header.menu-is-open .site-header__logo-img {
    filter: none;
}

.site-header__nav ul {
    display: flex;
    list-style: none;
    gap: var(--space-md);
}

.site-header__nav ul li a {
    font-family: var(--font-family-headings);
    font-weight: var(--font-weight-medium);
    font-size: 0.95rem;
    color: var(--color-text-on-dark-bg);
    padding: var(--space-xs) 0;
    position: relative;
}

.site-header.scrolled .site-header__nav ul li a,
.site-header.menu-is-open .site-header__nav ul li a {
    color: var(--color-text-primary);
}

.site-header__nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: width var(--transition-duration-short) ease;
}

.site-header__nav ul li a:hover::after, .site-header__nav ul li a.active-link::after {
    width: 100%;
}

.site-header__nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-on-dark-bg);
    padding: var(--space-xs);
    z-index: 1001; /* Ensure toggle is above nav */
}

.site-header.scrolled .site-header__nav-toggle,
.site-header.menu-is-open .site-header__nav-toggle {
    color: var(--color-primary);
}

.site-header__nav-toggle .icon {
    font-size: 1.8rem;
}

/* Section Indicator */
.section-indicator {
    position: fixed;
    top: 50%;
    right: var(--space-md);
    transform: translateY(-50%);
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.indicator-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: rgba(10, 35, 66, 0.2);
    border: 1px solid rgba(10, 35, 66, 0.3);
    cursor: pointer;
    transition: all var(--transition-duration-short) ease;
    position: relative;
}

.indicator-dot:hover {
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
    transform: scale(1.2);
}

.indicator-dot.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    transform: scale(1.5);
}

.indicator-dot .tooltip {
    position: absolute;
    top: 50%;
    right: 100%;
    transform: translateY(-50%) translateX(-10px);
    background-color: var(--color-primary);
    color: var(--color-text-on-dark-bg);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--border-radius-sm);
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-duration-short) ease, visibility var(--transition-duration-short) ease;
    pointer-events: none;
}

.indicator-dot:hover .tooltip {
    opacity: 1;
    visibility: visible;
}

/* Hero Section */
.hero-section {
    color: var(--color-text-on-dark-bg);
    text-align: center;
}

.hero-section__background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-primary);
    overflow: hidden;
}

.hero-section__video-bg {
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    object-fit: cover;
    z-index: 0;
    /* ИЗМЕНЕНИЕ: Изначально видео прозрачно */
    opacity: 0;
    /* ИЗМЕНЕНИЕ: Плавный переход для свойства opacity */
    transition: opacity 1.5s ease-in-out;
}

/* ИЗМЕНЕНИЕ: Новый класс для плавного проявления загруженного видео */
.hero-section__video-bg.is-loaded {
    opacity: 1;
}

.hero-section__background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(10, 35, 66, 0.7), rgba(10, 35, 66, 0.9));
    z-index: 1;
}

.hero-section__content {
    position: relative;
    z-index: 2;
    max-width: 900px;
}

.hero-section__logo {
    max-width: 180px;
    margin-bottom: var(--space-lg);
    filter: brightness(0) invert(1);
}

.hero-section__title {
    color: var(--color-text-on-dark-bg);
}

.hero-section__subtitle {
    color: rgba(248, 249, 250, 0.85);
    margin-bottom: var(--space-xl);
    font-weight: var(--font-weight-light);
    width: 100%;
    min-width: 100%;
    text-align: center;
}

.hero-section__scroll-indicator {
    display: inline-block;
    color: var(--color-text-on-dark-bg);
    animation: bounceArrow 2s infinite;
}

.hero-section__scroll-indicator .icon {
    font-size: 2.5rem;
}

@keyframes bounceArrow { 0%, 20%, 50%, 80%, 100% { transform: translateY(0); } 40% { transform: translateY(-10px); } 60% { transform: translateY(-5px); } }

/* About Section */
.about-section__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.values-list {
    list-style: none;
    margin-top: var(--space-lg);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.values-list li {
    font-family: var(--font-family-headings);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.values-list li .icon {
    color: var(--color-secondary);
    font-size: 1.5rem;
}

.about-section__image-content {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
}

.about-section__image-content img {
    display: block;
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: cover;
}

.facts-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(transparent, rgba(10, 35, 66, 0.8));
    padding: var(--space-lg) var(--space-md) var(--space-md);
    color: var(--color-text-on-dark-bg);
    display: flex;
    justify-content: space-around;
    text-align: center;
    gap: var(--space-md);
}

.fact-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.fact-item__value {
    display: flex;
    align-items: baseline;
    line-height: 1;
}

.fact-item strong {
    display: block;
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
}

.fact-item span {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin-left: 2px;
}

.fact-item small {
    font-size: 0.8rem;
    opacity: 0.8;
    margin-top: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Technology & Projects Sections */
.tech-showcase, .project-showcase {
    display: flex;
    flex-direction: column;
    gap: var(--space-xxl);
}

.tech-item, .project-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.tech-item__image, .project-item__image {
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: none;
    border: 1px solid var(--color-border-subtle);
    transition: var(--transition-default);
}

.tech-item__image img, .project-item__image img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    transition: transform var(--transition-duration-medium) ease;
}

.project-item:hover .project-item__image img,
.tech-item:hover .tech-item__image img {
    transform: scale(1.05);
}

.project-item__category {
    display: inline-block;
    font-family: var(--font-family-headings);
    font-size: 0.8rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-accent-gold);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
}

/* Social Focus Section */
.social-focus-section {
    color: var(--color-text-on-dark-bg);
    text-align: left;
    display: flex;
    align-items: center;
    min-height: 70vh;
}

.social-focus-section__background-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    z-index: 0;
}

.social-focus-section__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 35, 66, 0.85);
    z-index: 1;
}

.social-focus-section__content {
    position: relative;
    z-index: 2;
    max-width: 750px;
    margin-left: 0;
}

.social-focus-section .section-title--on-dark::after {
    left: 0;
    transform: none;
}

/* Awards Section */
.awards-section {
    background-color: var(--color-background-card);
}

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

.award-card {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    align-items: center;
    background-color: var(--color-background-main);
    padding: var(--space-md);
    border-radius: var(--border-radius-md);
    border: var(--border-thin);
    transition: var(--transition-default);
}

.award-card:hover {
    box-shadow: var(--shadow-medium);
    border-color: transparent;
    transform: translateY(-5px);
}

.award-card__image {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
}

.award-card__image img {
    width: 100%;
    height: 200px;
    display: block;
    border-radius: var(--border-radius-sm);
    object-fit: cover;
}

.award-card__content h4 {
    margin-bottom: var(--space-xs);
}

.award-card__content p {
    font-size: 0.95rem;
    margin-bottom: var(--space-sm);
}

.award-card__footer {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* Clients Section */
.clients-section {
    background-color: var(--color-background-main);
}

.clients-section__current-work {
    font-size: 1rem;
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: calc(-1 * var(--space-md)) auto var(--space-xl) auto;
    text-align: center;
    font-style: italic;
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-md);
    align-items: center;
}

.client-logo {
    /* background-color: var(--color-background-card); */
    border-radius: var(--border-radius-md);
    padding: var(--space-md);
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    /* border: var(--border-thin); */
    transition: var(--transition-default);
}

.client-logo:hover {
    transform: scale(1.05);
}

.client-logo img {
    max-width: 100%;
    max-height: 70px;
    height: auto;
    object-fit: contain;
    filter: grayscale(100%);
    opacity: 0.7;
    transition: var(--transition-default);
}

.client-logo:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

/* --- Client-specific Overrides --- */
.client-logo--shifudo {
    background-color: #392b18; /* Light orange background */
}

.client-logo--rosneft {
    background-color: #f5d920; /* Rosneft brand orange */
}

.client-logo--rosneft:hover {
    border-color: #D96D13; /* Darker orange for a cohesive hover effect */
}

.client-logo--tuazhmash {
    background-color: #dcdcdc;
}


/* Contact Section */
.contact-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: var(--space-lg);
    margin-top: var(--space-xl);
}

.contact-card {
    text-align: center;
    padding: var(--space-lg) var(--space-md);
    background-color: var(--color-background-card);
    border-radius: var(--border-radius-md);
    border: var(--border-thin);
    transition: var(--transition-default);
}
.contact-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-medium);
}

.contact-card p {
    color: var(--color-text-secondary);
    margin-left: auto;
    margin-right: auto;
}

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

/* Footer */
.site-footer-final {
    background-color: var(--color-primary);
    color: var(--color-text-on-dark-bg);
    padding: var(--space-xl) 0;
    text-align: center;
}

.site-footer-final__logo {
    max-width: 120px;
    margin-bottom: var(--space-sm);
    filter: brightness(0) invert(1);
}

.site-footer-final__tagline {
    font-family: var(--font-family-headings);
    font-style: italic;
    font-weight: var(--font-weight-light);
    opacity: 0.8;
    margin-bottom: var(--space-md);
}

.site-footer-final__copyright {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* Animations on Scroll */
.animate-on-scroll {
    opacity: 0;
    transition-property: opacity, transform;
    transition-duration: 0.8s;
    transition-timing-function: var(--transition-timing-function);
}

.animate-on-scroll.is-visible { opacity: 1; }
.animate-on-scroll[data-animation="fade-in"] { transform: translateY(20px); }
.animate-on-scroll[data-animation="fade-in-up"] { transform: translateY(50px); }
.animate-on-scroll[data-animation="fade-in-left"] { transform: translateX(-50px); }
.animate-on-scroll[data-animation="fade-in-right"] { transform: translateX(50px); }
.animate-on-scroll.is-visible { transform: translate(0, 0); }

/* Custom Scrollbar */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--color-background-main); border-left: 1px solid var(--color-border-subtle); }
::-webkit-scrollbar-thumb { background: var(--color-primary); border-radius: var(--border-radius-sm); border: 2px solid var(--color-background-main); }
::-webkit-scrollbar-thumb:hover { background: var(--color-secondary); }

/* --- Responsive Styles --- */
@media (min-width: 768px) {
    .about-section__grid {
        grid-template-columns: 1.2fr 1fr;
    }
    .tech-item, .project-item {
        grid-template-columns: 1fr 1fr;
    }
    .tech-item--reversed .tech-item__image,
    .project-item--reversed .project-item__image {
        order: 2;
    }
    .tech-item--reversed .tech-item__content,
    .project-item--reversed .project-item__content {
        order: 1;
    }
    .awards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .award-card {
        grid-template-columns: 200px 1fr;
        text-align: left;
    }
    .award-card__image img {
        height: 100%;
    }
}

@media (max-width: 991px) {
    .pres-section {
        padding: var(--space-xl) 0;
    }
    
    /* --- MOBILE NAVIGATION REFACTOR --- */
    /* Make header solid when menu is open for readability */
    .site-header.menu-is-open {
        background-color: var(--color-background-card);
        box-shadow: var(--shadow-medium);
        margin: 0;
        max-width: 100%;
        width: 100%;
        border-radius: 0;
        height: var(--header-height);
    }

    /* Navigation container: positioned below the header, hidden by default */
    .site-header__nav {
        display: block;
        position: absolute;
        top: 100%; /* Position right below the header */
        left: 0;
        right: 0;
        background-color: var(--color-background-card);
        box-shadow: var(--shadow-strong);
        
        /* Accordion effect: hide with max-height: 0 */
        max-height: 0;
        overflow: hidden;
        visibility: hidden;
        opacity: 0;
        
        /* Smooth transition for the accordion effect */
        transition: max-height 0.5s cubic-bezier(0.23, 1, 0.32, 1), 
                    visibility 0.5s ease, 
                    opacity 0.3s ease;
    }

    /* Active state: expand the navigation container */
    .site-header__nav.is-active {
        /* A generous max-height. Use vh for responsiveness. */
        /* Adjust if your menu becomes extremely long. */
        max-height: 45vh; 
        visibility: visible;
        opacity: 1;
    }

    /* Style the list and list items for mobile */
    .site-header__nav ul {
        flex-direction: column;
        align-items: flex-start;
        padding: var(--space-sm) var(--container-padding-x) var(--space-lg);
        gap: 0;
    }
    
    .site-header__nav ul li { 
        width: 100%;
        opacity: 0; /* Initially hidden for staggered animation */
        transform: translateY(-15px);
        transition: opacity 0.4s ease, transform 0.4s ease;
    }

    /* Staggered animation for list items */
    .site-header__nav.is-active ul li {
        opacity: 1;
        transform: translateY(0);
    }
    
    /* Add delay for each item to create the "lively" effect */
    .site-header__nav.is-active li:nth-child(1) { transition-delay: 0.1s; }
    .site-header__nav.is-active li:nth-child(2) { transition-delay: 0.15s; }
    .site-header__nav.is-active li:nth-child(3) { transition-delay: 0.2s; }
    .site-header__nav.is-active li:nth-child(4) { transition-delay: 0.25s; }
    .site-header__nav.is-active li:nth-child(5) { transition-delay: 0.3s; }
    .site-header__nav.is-active li:nth-child(6) { transition-delay: 0.35s; }
    .site-header__nav.is-active li:nth-child(7) { transition-delay: 0.4s; }
    .site-header__nav.is-active li:nth-child(8) { transition-delay: 0.45s; }


    .site-header__nav ul li a {
        display: block;
        padding: var(--space-md) 0;
        color: var(--color-text-primary);
        font-size: 1.1rem;
        border-bottom: 1px solid var(--color-border-subtle);
    }
    
    .site-header__nav ul li:last-child a { 
        border-bottom: none; 
    }
    
    .site-header__nav ul li a::after { 
        display: none; /* No underline effect on mobile */
    }
    
    /* Make toggle button visible */
    .site-header__nav-toggle { 
        display: block; 
    }
    
    .site-header:not(.scrolled):not(.menu-is-open) .site-header__nav-toggle { 
        color: var(--color-text-on-dark-bg); 
    }
    /* --- END OF MOBILE NAVIGATION REFACTOR --- */
    
    .tech-item__image, .project-item__image {
        order: -1;
    }
    .tech-item__content, .project-item__content {
        text-align: center;
    }
    .tech-item__content p, .project-item__content p {
        margin-left: auto;
        margin-right: auto;
    }
    .social-focus-section__content {
        margin: auto;
        text-align: center;
    }
    .social-focus-section .section-title--on-dark { text-align: center; }
    .social-focus-section .section-title--on-dark::after { left: 50%; transform: translateX(-50%); }
}

@media (max-width: 767px) {
    html { font-size: 15px; }
    :root {
        --container-padding-x: var(--space-md);
        --header-height: 70px;
        --header-height-scrolled: 60px;
    }
    .site-header__logo-img { height: 30px; }
    .section-indicator { display: none; }
    .facts-overlay {
        position: relative;
        flex-direction: row;
        justify-content: space-around;
        gap: var(--space-sm);
        padding: var(--space-md);
        background: rgba(10, 35, 66, 0.8);
    }
    .fact-item strong { font-size: 1.5rem; }
    .project-item__image img, .tech-item__image img { aspect-ratio: 3 / 2; }
    .award-card { text-align: center; }
    .award-card__image { max-width: 250px; margin: 0 auto; }
    .award-card__content p {
        margin-left: auto;
        margin-right: auto;
    }
    .clients-grid {
        grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    }
    .client-logo {
        height: 100px;
        padding: var(--space-sm);
    }
}