/* ==========================================================================
   STREETBLACK DESIGN SYSTEM (Gloomy Russian Street & Cinematic Lights)
   ========================================================================== */

:root {
    /* Colors */
    --bg-dark: #07080b; /* Глубокая ночная мгла */
    --bg-card: rgba(15, 17, 23, 0.85); /* Мокрый бетон */
    --bg-input: rgba(22, 25, 35, 0.5);

    /* Акцент оранжевого натриевого фонаря (Soviet Sodium Lamp) */
    --accent-amber: #ff9f1c;
    --accent-amber-glow: rgba(255, 159, 28, 0.25);

    /* Акцент сигнального красного (камера / аварийный свет) */
    --accent-red: #ff3344;
    --accent-red-glow: rgba(255, 51, 68, 0.3);

    --text-primary: #f0f2f5;
    --text-secondary: #8c93a6;
    --text-muted: #535a6b;

    --border-color: rgba(255, 255, 255, 0.05);
    --border-glow: rgba(255, 159, 28, 0.2);

    /* Fonts */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Transitions */
    --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s ease;

    /* Spacing */
    --container-width: 1200px;
}

/* ==========================================================================
   RESET & BASICS
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body {
    overflow-x: hidden;
}

/* Selection color */
::selection {
    background-color: var(--accent-amber);
    color: #000;
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: #181b24;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-amber);
}

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

/* Scroll Progress Bar */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-amber), var(--accent-red));
    width: 0%;
    z-index: 1000;
    transition: width 0.1s ease-out;
}

/* ==========================================================================
   REUSABLE COMPONENTS
   ========================================================================== */

.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
}

.gradient-text {
    background: linear-gradient(135deg, #fff 30%, var(--accent-amber) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background-color: var(--accent-amber);
    color: #000;
    box-shadow: 0 4px 15px var(--accent-amber-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--accent-amber-glow);
    background-color: #ffb03a;
}

.btn-secondary {
    background-color: transparent;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
    border-color: var(--accent-amber);
    background-color: rgba(255, 159, 28, 0.05);
    transform: translateY(-2px);
}

.btn-block {
    width: 100%;
}

/* Section Headers */
.section-header {
    margin-bottom: 70px;
}

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

.section-subtitle {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    color: var(--accent-amber);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    display: block;
    margin-bottom: 12px;
    font-weight: 700;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    font-weight: 900;
    letter-spacing: -0.03em;
}

/* Scroll Animation Effects */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.9s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.9s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   HEADER
   ========================================================================== */

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 900;
    transition: var(--transition-smooth);
    border-bottom: 1px solid transparent;
}

header.scrolled {
    background-color: rgba(7, 8, 11, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}

.header-container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    text-transform: uppercase;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.logo span {
    color: var(--accent-amber);
    text-shadow: 0 0 15px var(--accent-amber-glow);
}

.logo-icon {
    width: 24px;
    height: 24px;
    stroke: var(--accent-amber);
    filter: drop-shadow(0 0 8px var(--accent-amber-glow));
    transition: var(--transition-smooth);
}

.logo:hover .logo-icon {
    transform: rotate(-10deg) scale(1.1);
    stroke: #fff;
    filter: drop-shadow(0 0 12px rgba(255, 255, 255, 0.4));
}

nav ul {
    display: flex;
    list-style: none;
    gap: 35px;
}

nav ul a {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-secondary);
    position: relative;
    padding: 5px 0;
}

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

nav ul a:hover {
    color: #fff;
}

nav ul a:hover::after {
    width: 100%;
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 16px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 1000;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    background-color: #fff;
    transition: var(--transition-fast);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
    /* Фоновое изображение — мрачная улица с лучом прожектора */
    background-image: url('images/hero_russian_street.png');
    background-size: cover;
    background-position: center;
}

/* Эффект темноты и тумана поверх фоновой картинки */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
            180deg,
            rgba(7, 8, 11, 0.4) 0%,
            rgba(7, 8, 11, 0.9) 80%,
            rgba(7, 8, 11, 1) 100%
    );
    z-index: 1;
}

/* Имитация луча от студийного прожектора */
.hero-glow {
    position: absolute;
    top: 10%;
    left: -20%;
    width: 80%;
    height: 80%;
    background: radial-gradient(
            ellipse at left,
            rgba(255, 159, 28, 0.08) 0%,
            transparent 60%
    );
    z-index: 2;
    pointer-events: none;
}

.hero-content {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    position: relative;
    z-index: 3;
}

.hero-tagline {
    font-family: var(--font-heading);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-amber);
    text-shadow: 0 0 10px var(--accent-amber-glow);
    text-transform: uppercase;
    letter-spacing: 0.3em;
    margin-bottom: 25px;
    display: inline-block;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 4.8rem;
    font-weight: 900;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin-bottom: 30px;
}

.hero p {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin-bottom: 45px;
    font-weight: 350;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

/* Mouse Scroll Indicator */
.scroll-down {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
}

.mouse-icon {
    width: 26px;
    height: 44px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    position: relative;
}

.mouse-icon .wheel {
    width: 4px;
    height: 8px;
    background-color: var(--accent-amber);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 1.6s infinite;
}

@keyframes scroll-wheel {
    0% {
        opacity: 0;
        transform: translate(-50%, 0);
    }
    30% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translate(-50%, 15px);
    }
}

/* ==========================================================================
   ABOUT SECTION (ФИЛОСОФИЯ)
   ========================================================================== */

.about {
    padding: 160px 0;
    border-top: 1px solid var(--border-color);
    background: radial-gradient(circle at 10% 20%, rgba(255, 159, 28, 0.02) 0%, transparent 50%);
}

.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 80px;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 25px;
    font-weight: 300;
}

.about-text p strong {
    color: #fff;
    font-weight: 600;
}

.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.stat-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 45px 30px;
    border-radius: 6px;
    text-align: center;
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    transition: var(--transition-smooth);
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-glow);
    box-shadow: 0 10px 40px rgba(255, 159, 28, 0.04);
}

.stat-card h3 {
    font-family: var(--font-heading);
    font-size: 3.2rem;
    color: var(--accent-amber);
    margin-bottom: 12px;
    text-shadow: 0 0 15px var(--accent-amber-glow);
}

.stat-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ==========================================================================
   SHOWREEL (ПРОЖЕКТОР)
   ========================================================================== */

.showreel-section {
    padding: 160px 0;
    background-color: rgba(10, 11, 15, 0.5);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.showreel-caption {
    color: var(--text-muted);
    margin-top: 12px;
    font-size: 0.95rem;
}

.video-wrapper {
    max-width: 960px;
    margin: 0 auto;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.8), 0 0 30px rgba(255, 159, 28, 0.05);
    border: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.video-wrapper:hover {
    border-color: var(--accent-amber);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.9), 0 0 45px rgba(255, 159, 28, 0.15);
}

.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* ==========================================================================
   PORTFOLIO SECTION (ИЛЛЮМИНАЦИЯ)
   ========================================================================== */

.portfolio {
    padding: 160px 0;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.portfolio-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.portfolio-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-glow);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-img-wrapper {
    position: relative;
    aspect-ratio: 4/5;
    overflow: hidden;
    background-color: #10121a;
}

.card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-smooth);
}

.portfolio-card:hover .card-img-wrapper img {
    transform: scale(1.05);
    filter: brightness(0.8);
}

.card-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
            to top,
            rgba(7, 8, 11, 0.95) 0%,
            rgba(7, 8, 11, 0.4) 70%,
            transparent 100__
    );
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 24px;
    opacity: 0;
    transition: var(--transition-smooth);
}

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

.card-category {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-amber);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.play-btn {
    width: 54px;
    height: 54px;
    background-color: var(--accent-amber);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    align-self: center;
    transform: scale(0.8);
    transition: var(--transition-smooth);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

.play-btn svg {
    width: 20px;
    height: 20px;
    fill: #000;
    margin-left: 3px;
}

.play-btn:hover {
    background-color: #fff;
    transform: scale(1);
}

.card-info {
    padding: 25px;
}

.card-info h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.card-info p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 300;
}

/* ==========================================================================
   TEAM SECTION (СЪЁМОЧНАЯ ГРУППА)
   ========================================================================== */

.team {
    padding: 160px 0;
    background-color: rgba(10, 11, 15, 0.4);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.team-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 45px 20px;
    text-align: center;
    transition: var(--transition-smooth);
}

.team-card:hover {
    transform: translateY(-5px);
    border-color: var(--border-glow);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
}

.member-avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    border-radius: 50%;
    background: linear-gradient(135deg, #101217, rgba(255, 159, 28, 0.15));
    border: 1.5px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    overflow: hidden;
}

.member-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-card:hover .member-avatar {
    border-color: var(--accent-amber);
    box-shadow: 0 0 20px var(--accent-amber-glow);
}

.avatar-placeholder {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--text-secondary);
}

.team-card:hover .avatar-placeholder {
    color: #fff;
}

.member-info h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    margin-bottom: 6px;
    font-weight: 700;
}

.member-role {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
    margin-bottom: 15px;
}

.member-email {
    font-size: 0.8rem;
    color: var(--accent-amber);
    text-decoration: underline;
}

.member-email:hover {
    color: #fff;
}

/* ==========================================================================
   CONTACT SECTION (СВЯЗЬ)
   ========================================================================== */

.contact {
    padding: 160px 0;
}

.contact-box {
    display: grid;
    grid-template-columns: 1fr 1.25fr;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.contact-info {
    padding: 60px;
    background: linear-gradient(135deg, rgba(255, 159, 28, 0.03) 0%, transparent 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-info h2 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 900;
    margin-bottom: 20px;
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-weight: 300;
}

.contact-details .detail-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.detail-item .icon {
    font-size: 1.2rem;
    color: var(--accent-amber);
}

.detail-item a {
    font-weight: 500;
}

.detail-item a:hover {
    color: var(--accent-amber);
}

.contact-form-wrapper {
    padding: 60px;
    border-left: 1px solid var(--border-color);
}

/* Floating label form */
.input-group {
    position: relative;
    margin-bottom: 30px;
}

.input-group input,
.input-group textarea {
    width: 100%;
    padding: 16px;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: #fff;
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition-smooth);
    outline: none;
}

.input-group textarea {
    min-height: 120px;
    resize: vertical;
}

.input-group label {
    position: absolute;
    left: 16px;
    top: 16px;
    color: var(--text-muted);
    pointer-events: none;
    transition: var(--transition-smooth);
}

.input-group input:focus,
.input-group textarea:focus {
    border-color: var(--accent-amber);
    background-color: rgba(22, 25, 35, 0.8);
    box-shadow: 0 0 10px rgba(255, 159, 28, 0.08);
}

/* Keep floating label when text is inside or focused */
.input-group input:focus ~ label,
.input-group input:not(:placeholder-shown) ~ label,
.input-group textarea:focus ~ label,
.input-group textarea:not(:placeholder-shown) ~ label {
    top: -10px;
    left: 10px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-amber);
    background-color: #0b0c12;
    padding: 0 8px;
    border-radius: 4px;
}

/* Spinner */
.loader {
    display: none;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(0, 0, 0, 0.3);
    border-radius: 50%;
    border-top-color: #000;
    animation: spin 0.8s linear infinite;
    margin-left: 10px;
}

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

.form-message {
    margin-top: 15px;
    font-size: 0.9rem;
    font-weight: 500;
    display: none;
}

.form-message.success {
    color: var(--accent-amber);
    display: block;
}

.form-message.error {
    color: var(--accent-red);
    display: block;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

footer {
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
    background-color: #040507;
}

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

footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 30px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.footer-links a:hover {
    color: var(--accent-amber);
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVENESS)
   ========================================================================== */

@media (max-width: 1024px) {
    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 768px) {
    /* Typo */
    .hero h1 {
        font-size: 3.2rem;
    }

    .section-header h2 {
        font-size: 2.1rem;
    }

    /* Layouts */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

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

    .contact-form-wrapper {
        border-left: none;
        border-top: 1px solid var(--border-color);
        padding: 40px 20px;
    }

    .contact-info {
        padding: 40px 20px;
    }

    /* Mobile Nav */
    .menu-toggle {
        display: flex;
    }

    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--bg-dark);
        border-left: 1px solid var(--border-color);
        padding: 100px 40px;
        transition: var(--transition-smooth);
        z-index: 950;
    }

    nav.active {
        right: 0;
    }

    nav ul {
        flex-direction: column;
        gap: 25px;
    }

    nav ul a {
        font-size: 1.2rem;
    }

    /* Burger Animation */
    .menu-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2.6rem;
    }

    .hero-actions {
        flex-direction: column;
        gap: 15px;
    }

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

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

    .about-stats {
        grid-template-columns: 1fr;
    }
}