/* ============================================
   ANGELINA OBOLONSKAYA — Premium Landing
   ============================================ */

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

:root {
    --color-bg: #0a0a0a;
    --color-bg-light: #111111;
    --color-bg-card: #161616;
    --color-text: #ffffff;
    --color-text-muted: #888888;
    --color-text-subtle: #555555;
    --color-accent: #c9a96e;
    --color-accent-light: #e0c991;
    --color-accent-dark: #a68a4e;
    --color-border: #222222;
    --color-border-light: #333333;
    --font-display: 'Cormorant Garamond', serif;
    --font-body: 'Montserrat', sans-serif;
    --section-padding: clamp(80px, 12vw, 160px);
    --container-width: 1200px;
    --container-padding: clamp(20px, 4vw, 40px);
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --duration: 0.8s;
}

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

body {
    font-family: var(--font-body);
    font-weight: 300;
    background-color: var(--color-bg);
    color: var(--color-text);
    overflow-x: hidden;
    line-height: 1.6;
    cursor: none;
}

a { color: inherit; text-decoration: none; cursor: none; }
button, input, textarea { cursor: none; }
img { display: block; max-width: 100%; }

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

/* === Custom Cursor === */
.cursor {
    position: fixed;
    width: 8px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 50%;
    pointer-events: none;
    z-index: 10000;
    transform: translate(-50%, -50%);
    transition: width 0.3s var(--ease-out), height 0.3s var(--ease-out), background 0.3s;
    mix-blend-mode: difference;
}

.cursor-follower {
    position: fixed;
    width: 40px;
    height: 40px;
    border: 1px solid var(--color-accent);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9999;
    transform: translate(-50%, -50%);
    transition: width 0.4s var(--ease-out), height 0.4s var(--ease-out);
    opacity: 0.5;
}

.cursor.hover {
    width: 50px;
    height: 50px;
    background: transparent;
    border: 1px solid var(--color-accent);
    mix-blend-mode: normal;
}

.cursor-follower.hover {
    width: 60px;
    height: 60px;
    opacity: 0.3;
}

/* === Preloader === */
.preloader {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}

.preloader.hidden { opacity: 0; visibility: hidden; }

.preloader-text {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 3rem);
    font-weight: 300;
    letter-spacing: 0.3em;
    color: var(--color-accent);
    display: block;
    margin-bottom: 30px;
}

.preloader-line {
    width: 60px;
    height: 1px;
    background: var(--color-border-light);
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.preloader-line::after {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: var(--color-accent);
    animation: preloaderLine 1.5s var(--ease-in-out) infinite;
}

@keyframes preloaderLine {
    0% { left: -100%; }
    50% { left: 0; }
    100% { left: 100%; }
}

/* === Navigation === */
.nav {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    padding: 30px var(--container-padding);
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 1000;
    transition: background 0.4s, padding 0.4s;
}

.nav.scrolled {
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    padding: 15px var(--container-padding);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 400;
    color: var(--color-accent);
    letter-spacing: 0.05em;
}

.nav-menu { display: flex; gap: 35px; }

.nav-link {
    font-size: 0.8rem;
    font-weight: 300;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    transition: color 0.3s;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 0; height: 1px;
    background: var(--color-accent);
    transition: width 0.4s var(--ease-out);
}

.nav-link:hover { color: var(--color-accent); }
.nav-link:hover::after { width: 100%; }

.nav-burger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
}

.nav-burger span {
    width: 30px; height: 1px;
    background: var(--color-text);
    transition: transform 0.3s, opacity 0.3s;
}

.nav-burger.active span:first-child { transform: rotate(45deg) translateY(5px); }
.nav-burger.active span:last-child { transform: rotate(-45deg) translateY(-5px); }

/* === Mobile Menu === */
.mobile-menu {
    position: fixed;
    top: 0; right: -100%;
    width: 100%; height: 100%;
    background: var(--color-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 40px;
    z-index: 999;
    transition: right 0.5s var(--ease-out);
}

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

.mobile-link {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--color-text-muted);
    transition: color 0.3s;
}

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

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

.hero-bg {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
}

.hero-gradient {
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(ellipse at 30% 50%, rgba(201, 169, 110, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(201, 169, 110, 0.04) 0%, transparent 50%);
    animation: gradientFloat 15s ease-in-out infinite;
}

@keyframes gradientFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, -2%) rotate(1deg); }
    66% { transform: translate(-1%, 1%) rotate(-0.5deg); }
}

.hero-particles { position: absolute; width: 100%; height: 100%; }

.particle {
    position: absolute;
    width: 2px; height: 2px;
    background: var(--color-accent);
    border-radius: 50%;
    opacity: 0;
    animation: particleFloat 8s infinite;
}

@keyframes particleFloat {
    0% { opacity: 0; transform: translateY(0); }
    10% { opacity: 0.6; }
    90% { opacity: 0.6; }
    100% { opacity: 0; transform: translateY(-200px); }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-overtitle {
    font-size: 0.85rem;
    font-weight: 300;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 20px;
    opacity: 0;
    transform: translateY(30px);
}

.hero-title {
    font-family: var(--font-display);
    font-weight: 300;
    margin-bottom: 30px;
    overflow: hidden;
}

.hero-title-line {
    display: block;
    font-size: clamp(3.5rem, 11vw, 9rem);
    line-height: 1;
    letter-spacing: -0.02em;
    opacity: 0;
    transform: translateY(100%);
}

.hero-title-line-sub {
    font-size: clamp(2.5rem, 7vw, 6rem);
    font-weight: 400;
    color: var(--color-accent);
    letter-spacing: 0.05em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.2rem);
    font-weight: 200;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 50px;
    opacity: 0;
    transform: translateY(30px);
}

.text-accent {
    color: var(--color-accent);
    font-style: italic;
    font-family: var(--font-display);
    font-weight: 400;
    font-size: 1.1em;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    opacity: 0;
    transform: translateY(30px);
}

.hero-scroll {
    position: absolute;
    bottom: 40px; left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.hero-scroll span {
    font-size: 0.7rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-subtle);
}

.hero-scroll-line {
    width: 1px; height: 40px;
    background: var(--color-border-light);
    position: relative;
    overflow: hidden;
}

.hero-scroll-line::after {
    content: '';
    position: absolute;
    top: -100%; left: 0;
    width: 100%; height: 50%;
    background: var(--color-accent);
    animation: scrollLine 2s var(--ease-in-out) infinite;
}

@keyframes scrollLine {
    0% { top: -50%; }
    100% { top: 150%; }
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 40px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border: none;
    cursor: none;
    transition: all 0.4s var(--ease-out);
    position: relative;
    overflow: hidden;
}

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

.btn-primary:hover {
    background: var(--color-accent-light);
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(201, 169, 110, 0.3);
}

.btn-ghost {
    background: transparent;
    border: 1px solid var(--color-border-light);
    color: var(--color-text);
}

.btn-ghost:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    transform: translateY(-2px);
}

.btn-full { width: 100%; justify-content: center; }

/* === Sections === */
.section {
    padding: var(--section-padding) 0;
    position: relative;
}

.section-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 20px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 300;
    line-height: 1.2;
    margin-bottom: 60px;
}

.section-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

/* === About === */
.about-image-wrapper {
    position: relative;
    aspect-ratio: 3/4;
    max-width: 400px;
}

.about-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(20%) contrast(1.05);
    transition: filter 0.5s;
}

.about-photo:hover {
    filter: grayscale(0%) contrast(1);
}

.about-image-border {
    position: absolute;
    top: 20px; left: 20px;
    right: -20px; bottom: -20px;
    border: 1px solid var(--color-accent);
    opacity: 0.3;
    z-index: -1;
}

.about-text {
    font-size: 1rem;
    font-weight: 300;
    color: var(--color-text-muted);
    line-height: 1.9;
    margin-bottom: 20px;
}

.about-text strong {
    color: var(--color-text);
    font-weight: 500;
}

.about-stats {
    display: flex;
    gap: 50px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 300;
    color: var(--color-accent);
    line-height: 1;
}

.stat-plus {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-accent);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 300;
    color: var(--color-text-subtle);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-top: 8px;
}

/* === Process === */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.process-step {
    padding: 40px 30px;
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
    transition: border-color 0.4s, transform 0.4s var(--ease-out);
    position: relative;
}

.process-step:hover {
    border-color: var(--color-accent);
    transform: translateY(-5px);
}

.process-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 300;
    color: var(--color-accent);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 20px;
}

.process-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 15px;
    line-height: 1.3;
}

.process-text {
    font-size: 0.85rem;
    font-weight: 300;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* === Cases === */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    padding: 40px 35px;
    display: flex;
    flex-direction: column;
    transition: border-color 0.4s, transform 0.5s var(--ease-out);
}

.case-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-8px);
}

.case-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}

.case-card-number {
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
}

.case-card-tag {
    font-size: 0.65rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-subtle);
    padding: 4px 12px;
    border: 1px solid var(--color-border);
}

.case-card-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 400;
    line-height: 1.3;
    margin-bottom: 15px;
}

.case-card-desc {
    font-size: 0.9rem;
    font-weight: 300;
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 25px;
    flex-grow: 1;
}

.case-card-desc strong {
    color: var(--color-accent);
    font-weight: 500;
}

.case-card-metrics {
    display: flex;
    gap: 30px;
    padding: 20px 0;
    border-top: 1px solid var(--color-border);
    margin-bottom: 20px;
}

.case-metric-value {
    display: block;
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 400;
    color: var(--color-accent);
    line-height: 1;
}

.case-metric-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 300;
    color: var(--color-text-subtle);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-top: 5px;
}

.case-card-link {
    font-size: 0.8rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    transition: letter-spacing 0.3s;
}

.case-card-link:hover {
    letter-spacing: 0.2em;
}

/* === Projects === */
.project-block {
    padding: 50px 0;
    border-bottom: 1px solid var(--color-border);
}

.project-block:first-of-type {
    border-top: 1px solid var(--color-border);
}

.project-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.project-block-role {
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
}

.project-block-company {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 400;
}

.project-block-desc {
    font-size: 0.95rem;
    font-weight: 300;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 30px;
    max-width: 700px;
}

.project-block-desc strong {
    color: var(--color-accent);
    font-weight: 500;
}

.project-list {
    display: flex;
    flex-direction: column;
}

.project-item {
    display: flex;
    align-items: center;
    padding: 18px 0;
    border-top: 1px solid var(--color-border);
    transition: padding-left 0.4s var(--ease-out), border-color 0.3s;
}

.project-item:hover {
    padding-left: 20px;
    border-color: var(--color-accent);
}

.project-item-name {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 400;
    flex: 1;
    transition: color 0.3s;
}

.project-item:hover .project-item-name {
    color: var(--color-accent);
}

.project-item-type {
    font-size: 0.75rem;
    font-weight: 300;
    color: var(--color-text-subtle);
    letter-spacing: 0.1em;
    margin-right: 20px;
}

.project-item-arrow {
    font-size: 1.2rem;
    color: var(--color-accent);
    opacity: 0;
    transform: translateX(-10px);
    transition: opacity 0.3s, transform 0.3s;
}

.project-item:hover .project-item-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* === Skills === */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.skill-card {
    padding: 40px 30px;
    border: 1px solid var(--color-border);
    background: var(--color-bg-card);
    transition: border-color 0.4s, transform 0.4s var(--ease-out);
}

.skill-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-5px);
}

.skill-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-bottom: 20px;
    opacity: 0.7;
}

.skill-title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 12px;
}

.skill-text {
    font-size: 0.85rem;
    font-weight: 300;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* === Marquee === */
.marquee {
    padding: 40px 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
    white-space: nowrap;
}

.marquee-inner {
    display: inline-flex;
    gap: 40px;
    animation: marquee 25s linear infinite;
}

.marquee-inner span {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 300;
    letter-spacing: 0.1em;
    color: var(--color-text-subtle);
}

.marquee-dot {
    color: var(--color-accent) !important;
    font-size: 1rem !important;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* === Contact === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-text {
    font-size: 1.05rem;
    font-weight: 300;
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 40px;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-link {
    display: block;
    padding: 20px 0;
    border-bottom: 1px solid var(--color-border);
    transition: border-color 0.3s;
}

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

.contact-link-label {
    display: block;
    font-size: 0.7rem;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-text-subtle);
    margin-bottom: 5px;
}

.contact-link-value {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--color-text);
    transition: color 0.3s;
}

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

/* === Form === */
.form-group {
    margin-bottom: 30px;
    position: relative;
}

.form-input {
    width: 100%;
    padding: 15px 0;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 300;
    color: var(--color-text);
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-border);
    outline: none;
    transition: border-color 0.3s;
}

.form-input::placeholder { color: var(--color-text-subtle); }
.form-input:focus { border-color: var(--color-accent); }
.form-textarea { min-height: 120px; resize: vertical; }

.form-line {
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 1px;
    background: var(--color-accent);
    transition: width 0.4s var(--ease-out);
}

.form-input:focus ~ .form-line { width: 100%; }

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

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

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 400;
    color: var(--color-accent);
}

.footer-social { display: flex; gap: 30px; }

.social-link {
    font-size: 0.8rem;
    font-weight: 300;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
    transition: color 0.3s;
}

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

.footer-copy {
    font-size: 0.75rem;
    color: var(--color-text-subtle);
}

/* === Animations === */
[data-animate] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity var(--duration) var(--ease-out), transform var(--duration) var(--ease-out);
}

[data-animate="fade-right"] { transform: translateX(-40px); }
[data-animate].animated { opacity: 1; transform: translate(0, 0); }

/* === Responsive === */
@media (max-width: 1024px) {
    .section-grid, .contact-grid { grid-template-columns: 1fr; gap: 50px; }
    .cases-grid { grid-template-columns: 1fr 1fr; }
    .process-grid { grid-template-columns: 1fr 1fr; }
    .skills-grid { grid-template-columns: 1fr 1fr; }
    .about-image-wrapper { max-width: 300px; margin: 0 auto; }
    .project-block-header { flex-direction: column; align-items: flex-start; gap: 5px; }
}

@media (max-width: 768px) {
    .nav-menu { display: none; }
    .nav-burger { display: flex; }
    .cases-grid, .process-grid { grid-template-columns: 1fr; }
    .skills-grid { grid-template-columns: 1fr; }
    .hero-cta { flex-direction: column; align-items: center; }
    .about-stats { gap: 30px; }
    .footer-inner { flex-direction: column; gap: 20px; text-align: center; }
    .cursor, .cursor-follower { display: none; }
    body { cursor: auto; }
    a, button, input, textarea { cursor: auto; }
}

@media (max-width: 480px) {
    .about-stats { flex-direction: column; gap: 20px; }
    .case-card-metrics { flex-direction: column; gap: 15px; }
}