/* static/css/home.css */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --black: #000000;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;

    --accent: #1a1a1a;
    --transition: 0.6s cubic-bezier(0.25, 0.1, 0.15, 1);
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--white);
    color: var(--black);
    overflow-x: hidden;
    opacity: 0;
    transition: opacity 0.8s ease;
}

body.loaded {
    opacity: 1;
}

/* Прелоадер */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--black);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

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

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

.preloader-ring {
    width: 60px;
    height: 60px;
    border: 2px solid rgba(255,255,255,0.1);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 2rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.preloader-text {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: 4px;
    color: var(--white);
    display: block;
    margin-bottom: 1rem;
}

.preloader-line {
    width: 100px;
    height: 1px;
    background: rgba(255,255,255,0.3);
    margin: 0 auto;
    position: relative;
}

.preloader-line::after {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 0;
    height: 100%;
    background: var(--white);
    animation: lineLoad 1.2s ease forwards;
}

@keyframes lineLoad {
    to { width: 100%; }
}

/* Контейнер */
.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 4rem;
    position: relative;
    z-index: 2;
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }
}

/* ========== HERO ========== */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-100) 100%);
    overflow: hidden;
}

.parallax-bg {
    position: absolute;
    top: -20%;
    left: -20%;
    width: 140%;
    height: 140%;
    background-image:
        repeating-linear-gradient(15deg, rgba(0,0,0,0.02) 0px, rgba(0,0,0,0.02) 2px, transparent 2px, transparent 40px),
        repeating-linear-gradient(105deg, rgba(0,0,0,0.02) 0px, rgba(0,0,0,0.02) 2px, transparent 2px, transparent 40px);
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--black);
    border-radius: 50%;
}

.hero-title {
    font-size: clamp(3rem, 7vw, 5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.title-gradient {
    background: linear-gradient(135deg, var(--black) 0%, var(--gray-500) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
    max-width: 90%;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
    align-items: center;
}

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

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1;
}

.stat-label {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 1px;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-300);
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    border: none;
    background: none;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.btn-primary {
    background: var(--black);
    color: var(--white);
    padding: 1rem 2.5rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.btn-outline {
    border: 1px solid var(--gray-300);
    color: var(--black);
}

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

.hero-visual {
    position: relative;
}

.hero-model {
    position: relative;
    height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.model-wrapper {
    position: relative;
    z-index: 2;
}

.hero-3d-img {
    max-width: 100%;
    max-height: 400px;
    filter: drop-shadow(0 20px 30px rgba(0,0,0,0.1));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.model-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: radial-gradient(circle, rgba(0,0,0,0.05) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
}

.floating-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(0,0,0,0.1);
    border-radius: 50%;
}

.particle:nth-child(1) { top: 20%; left: 10%; animation: particleFloat 8s infinite; }
.particle:nth-child(2) { top: 70%; left: 20%; animation: particleFloat 10s infinite reverse; }
.particle:nth-child(3) { top: 40%; right: 10%; animation: particleFloat 12s infinite; }
.particle:nth-child(4) { bottom: 20%; right: 20%; animation: particleFloat 9s infinite; }

@keyframes particleFloat {
    0%, 100% { transform: translate(0, 0); opacity: 0.3; }
    50% { transform: translate(20px, -20px); opacity: 0.8; }
}

.scroll-hint {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.scroll-wheel {
    width: 24px;
    height: 40px;
    border: 1px solid var(--gray-400);
    border-radius: 20px;
    position: relative;
}

.scroll-wheel::before {
    content: '';
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--gray-500);
    border-radius: 2px;
    animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
    0%, 100% { opacity: 0.3; transform: translateX(-50%) translateY(0); }
    50% { opacity: 1; transform: translateX(-50%) translateY(10px); }
}

.scroll-hint span {
    font-size: 0.7rem;
    letter-spacing: 2px;
    color: var(--gray-500);
}

/* ========== НАПРАВЛЕНИЯ С УГЛОВЫМИ ЛИНИЯМИ ========== */
.directions {
    padding: 6rem 0 0;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

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

.section-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 3px;
    color: var(--gray-500);
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.section-title span {
    color: var(--gray-400);
    font-weight: 500;
}

.section-desc {
    color: var(--gray-500);
    max-width: 600px;
    margin: 1rem auto 0;
}

.directions-wrapper {
    margin-top: 2rem;
}

.direction-block {
    position: relative;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

.direction-block.visible {
    opacity: 1;
    transform: translateY(0);
}

.direction-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    padding: 5rem 4rem;
    position: relative;
    border-bottom: 1px solid var(--gray-200);
}

.direction-container.reverse {
    direction: rtl;
}

.direction-container.reverse .direction-content {
    direction: ltr;
}

.direction-content {
    direction: ltr;
}

.direction-number {
    font-size: 1rem;
    font-weight: 600;
    color: var(--gray-400);
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.direction-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.direction-desc {
    color: var(--gray-600);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.direction-specs {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

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

.spec-item .spec-value {
    font-size: 1.2rem;
    font-weight: 700;
}

.spec-item .spec-label {
    font-size: 0.7rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

.direction-btn {
    background: none;
    border: none;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--black);
    cursor: pointer;
    padding: 0.75rem 0;
    position: relative;
}

.direction-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--black);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.direction-btn:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Угловые линии (пазл эффект) */
.direction-media {
    position: relative;
    overflow: hidden;
}

.media-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
}

.direction-img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s ease;
}

.direction-block:hover .direction-img {
    transform: scale(1.03);
}

.media-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0,0,0,0.02) 0%, transparent 100%);
    pointer-events: none;
}

/* Угловые линии под 15 градусов */
.angle-line {
    position: absolute;
    background: var(--gray-200);
    z-index: 3;
    pointer-events: none;
}

.line-1 {
    width: 60px;
    height: 2px;
    transform: rotate(15deg);
}

.line-2 {
    width: 60px;
    height: 2px;
    transform: rotate(-15deg);
}

.direction-block:nth-child(odd) .direction-media .line-1 {
    bottom: -20px;
    right: -20px;
}

.direction-block:nth-child(odd) .direction-media .line-2 {
    bottom: -20px;
    right: 40px;
}

.direction-block:nth-child(even) .direction-media .line-1 {
    top: -20px;
    left: -20px;
}

.direction-block:nth-child(even) .direction-media .line-2 {
    top: -20px;
    left: 40px;
}

/* ========== ПРЕИМУЩЕСТВА ========== */
.advantages {
    padding: 6rem 0;
    background: var(--gray-50);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.advantage-card {
    background: var(--white);
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.advantage-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 30px rgba(0,0,0,0.05);
}

.advantage-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    color: var(--black);
}

.advantage-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: 1px;
}

.advantage-card p {
    color: var(--gray-600);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ========== КЕЙСЫ ========== */
.cases {
    padding: 6rem 0;
    background: var(--white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.case-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.case-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.case-image {
    aspect-ratio: 4/3;
    overflow: hidden;
}

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

.case-item:hover .case-image img {
    transform: scale(1.05);
}

.case-info {
    padding: 1.5rem;
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-top: none;
}

.case-category {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 1px;
    color: var(--gray-500);
    margin-bottom: 0.5rem;
}

.case-info h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.case-info p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

/* ========== CTA ========== */
.cta {
    padding: 6rem 0;
    background: var(--black);
}

.cta-wrapper {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.cta-wrapper.visible {
    opacity: 1;
    transform: translateY(0);
}

.cta-wrapper h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.cta-wrapper p {
    color: var(--gray-400);
    margin-bottom: 2rem;
}

.cta-form {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.form-input {
    flex: 1;
    min-width: 200px;
    padding: 1rem 1.5rem;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--white);
    font-size: 0.9rem;
}

.form-input:focus {
    outline: none;
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.3);
}

.form-input::placeholder {
    color: var(--gray-500);
}

.btn-large {
    padding: 1rem 2rem;
}

/* ========== АДАПТИВНОСТЬ ========== */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-description {
        max-width: 100%;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-actions {
        justify-content: center;
    }

    .direction-container {
        grid-template-columns: 1fr;
        padding: 3rem 2rem;
        gap: 2rem;
    }

    .direction-container.reverse {
        direction: ltr;
    }

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

    .direction-specs {
        justify-content: center;
    }

    .direction-btn {
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .stat-divider {
        display: none;
    }

    .stat-item {
        flex-direction: row;
        justify-content: center;
        gap: 1rem;
        align-items: baseline;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

    .direction-specs {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .spec-item {
        flex-direction: row;
        gap: 1rem;
        align-items: baseline;
    }

    .advantages-grid, .cases-grid {
        grid-template-columns: 1fr;
    }

    .cta-form {
        flex-direction: column;
        align-items: stretch;
    }

    .form-input, .btn-large {
        width: 100%;
    }

    .angle-line {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .direction-title {
        font-size: 1.5rem;
    }

    .direction-container {
        padding: 2rem 1rem;
    }
}