:root {
    --bg-color: #0a0a0a;
    --text-color: #ffffff;
    --accent-color: #707070;
    --border-color: #1a1a1a;
    --card-bg: #121212;
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    letter-spacing: -0.02em;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.25s ease;
}

/* --- НАВИГАЦИЯ --- */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.75rem 3rem;
    position: sticky;
    top: 0;
    background-color: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.logo a {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 4px;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.nav-links a {
    color: var(--accent-color);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-color);
}

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

.burger span {
    width: 24px;
    height: 1px;
    background-color: var(--text-color);
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* --- ГЛАВНАЯ СТРАНИЦА (HERO) --- */
.hero {
    height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 2rem;
}

.hero-content {
    text-align: center;
    max-width: 600px;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 200;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.2rem;
}

.hero-content p {
    font-size: 1.1rem;
    color: var(--accent-color);
    margin-bottom: 2.5rem;
    font-weight: 300;
}

.btn {
    display: inline-block;
    padding: 1rem 2.2rem;
    border: 1px solid var(--text-color);
    background: transparent;
    color: var(--text-color);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    cursor: pointer;
    transition: background-color 0.25s ease, color 0.25s ease;
}

.btn:hover {
    background-color: var(--text-color);
    color: var(--bg-color);
}

/* --- ОСНОВНОЙ КОНТЕНТ И ЛЕЙАУТ --- */
.page-content {
    flex: 1;
    padding: 3rem;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

.portfolio-layout {
    display: grid;
    grid-template-columns: 220px 1fr;
    gap: 4rem;
    align-items: start;
}

/* --- САЙДБАР / ФИЛЬТРЫ --- */
.sidebar-categories {
    position: sticky;
    top: 120px;
}

.sidebar-title {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-color);
    margin-bottom: 1.5rem;
}

.filter-group, .filter-subgroup {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.filter-btn {
    background: none;
    border: none;
    color: var(--accent-color);
    font-family: inherit;
    font-size: 0.95rem;
    text-align: left;
    padding: 0.5rem 0;
    cursor: pointer;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: color 0.2s ease;
}

.filter-btn:hover, .filter-btn.active {
    color: var(--text-color);
}

.filter-btn.active {
    font-weight: 600;
}

.filter-btn .arrow {
    border: solid var(--accent-color);
    border-width: 0 1px 1px 0;
    display: inline-block;
    padding: 3px;
    transform: rotate(45deg);
    transition: transform 0.25s ease, border-color 0.25s ease;
}

.filter-btn:hover .arrow {
    border-color: var(--text-color);
}

.trigger-submenu.open .arrow {
    transform: rotate(-135deg);
}

.filter-subgroup {
    max-height: 0;
    overflow: hidden;
    padding-left: 1rem;
    border-left: 1px solid var(--border-color);
    margin-top: 0.25rem;
    transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), margin 0.3s ease;
}

.filter-subgroup.show {
    max-height: 150px;
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}

.sub-btn {
    font-size: 0.85rem;
    color: #666;
}

/* --- ГАЛЕРЕЯ (МЕЙСОНРИ СЕТКА) --- */
.gallery-grid {
    column-count: 3;
    column-gap: 2rem;
    width: 100%;
}

.gallery-item {
    position: relative;
    break-inside: avoid;
    margin-bottom: 2rem;
    width: 100%;
    background-color: var(--card-bg);
    border-radius: 4px;
    overflow: hidden;
    min-height: 250px; 
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.gallery-item img {
    width: 100%;
    height: auto;
    display: block;
    cursor: zoom-in;
    opacity: 0;
    transition: opacity 0.6s ease;
}

.gallery-item img.loaded {
    opacity: 1;
}

.empty-message {
    grid-column: 1 / -1;
    color: var(--accent-color);
    font-style: italic;
}

/* --- ОВЕРЛЕИ С ТЕКСТОМ/СТИХАМИ ДЛЯ ФОТО --- */
.item-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(10, 10, 10, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.item-text {
    color: #ffffff;
    font-size: 0.95rem;
    font-weight: 300;
    line-height: 1.6;
    letter-spacing: 0.05em;
    font-style: italic;
    transform: translateY(15px);
    transition: transform 0.4s ease;
}

.gallery-item.has-description:hover .item-overlay {
    opacity: 1;
}

.gallery-item.has-description:hover .item-text {
    transform: translateY(0);
}

/* --- ЛАЙТБОКС (ПРОСМОТР ФОТО) --- */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(6, 6, 6, 0.98);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-wrapper {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    gap: 1.5rem;
}

.lightbox-img-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0.95);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
}

.lightbox.active .lightbox-img-container {
    transform: scale(1);
    opacity: 1;
}

.lightbox-content {
    max-width: 90vw;
    max-height: 80vh;
    object-fit: contain;
    display: block;
}

/* Кнопка информации (i) */
.lightbox-info-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 38px;
    height: 38px;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: white;
    opacity: 0.85;
    transition: opacity 0.25s ease, background 0.25s ease;
    z-index: 10;
}

.lightbox-info-btn:hover {
    opacity: 1;
    background: rgba(0, 0, 0, 0.8);
}

.lightbox-info-btn svg {
    pointer-events: none;
}

/* ОВЕРЛЕЙ С ОПИСАНИЕМ ПОВЕРХ ФОТО */
.lightbox-caption {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    font-weight: 300;
    line-height: 1.6;
    font-style: italic;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
    z-index: 5; /* Под кнопкой info */
}

.lightbox-caption.visible {
    opacity: 1;
    visibility: visible;
}

.close-lightbox {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    color: var(--accent-color);
    font-size: 2.5rem;
    cursor: pointer;
    z-index: 1010;
    transition: color 0.2s ease;
}

.close-lightbox:hover {
    color: white;
}

/* --- КОНТАКТНАЯ СТРАНИЦА --- */
.contact-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
    padding: 2rem 0;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 200;
    margin-bottom: 1.5rem;
}

.lead-text {
    font-size: 1.1rem;
    color: var(--accent-color);
    line-height: 1.5;
    margin-bottom: 3rem;
    font-weight: 300;
}

.info-details p {
    font-size: 1rem;
    margin-bottom: 1rem;
}

.info-details p span {
    color: var(--accent-color);
    margin-right: 0.5rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.form-group {
    position: relative;
    width: 100%;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 0.75rem 0;
    background: transparent;
    border: none;
    border-bottom: 1px solid #222;
    color: var(--text-color);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.contact-form textarea {
    resize: none;
}

.contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--text-color);
}

.form-group label {
    position: absolute;
    left: 0;
    top: 0.75rem;
    color: var(--accent-color);
    pointer-events: none;
    transition: 0.25s ease all;
    font-size: 1rem;
    font-weight: 300;
}

.contact-form input:focus ~ label,
.contact-form input:not(:placeholder-shown) ~ label,
.contact-form textarea:focus ~ label,
.contact-form textarea:not(:placeholder-shown) ~ label {
    top: -1.25rem;
    font-size: 0.75rem;
    color: var(--text-color);
    letter-spacing: 1px;
}

/* --- СТИЛЬНЫЕ УВЕДОМЛЕНИЯ (TOAST) --- */
.toast-notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background-color: #121212;
    color: #fff;
    padding: 1rem 2rem;
    border: 1px solid #222;
    border-radius: 4px;
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    z-index: 2000;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
    pointer-events: none;
}

.toast-notification.show {
    opacity: 1;
    transform: translateY(0);
}

.toast-notification.error {
    border-color: #551a1a;
    color: #ff6b6b;
}

.toast-notification.success {
    border-color: #1a5525;
    color: #6bff84;
}

/* --- ПОДВАЛ --- */
footer {
    text-align: center;
    padding: 2.5rem;
    color: #444;
    font-size: 0.75rem;
    letter-spacing: 1px;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

/* --- АНИМАЦИИ --- */
/* Убираем старую zoomEffect, теперь за плавность отвечает transition */

/* --- АДАПТИВНОСТЬ (ПЛАНШЕТЫ И МОБИЛЬНЫЕ) --- */
@media (max-width: 992px) {
    .navbar {
        padding: 1.5rem 2rem;
    }

    .portfolio-layout {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .sidebar-categories {
        position: relative;
        top: 0;
        border-bottom: 1px solid var(--border-color);
        padding-bottom: 1.5rem;
    }

    .filter-group {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .filter-btn {
        width: auto;
        padding: 0.5rem 1.2rem;
        background-color: var(--card-bg);
        border: 1px solid var(--border-color);
        border-radius: 3px;
        font-size: 0.8rem;
        text-transform: uppercase;
        letter-spacing: 1px;
    }

    .filter-btn.active {
        background-color: var(--text-color);
        color: var(--bg-color);
    }

    .filter-btn .arrow {
        margin-left: 0.5rem;
    }

    .filter-subgroup {
        width: 100%;
        flex-direction: row;
        flex-wrap: wrap;
        padding-left: 0;
        border-left: none;
        gap: 0.5rem;
    }

    .filter-subgroup.show {
        margin-top: 0.75rem;
        margin-bottom: 0;
    }

    .sub-btn {
        background-color: #0f0f0f;
    }

    .gallery-grid {
        column-count: 2;
        column-gap: 1.5rem;
    }

    .gallery-item {
        margin-bottom: 1.5rem;
        min-height: 200px;
    }

    .contact-container {
        grid-template-columns: 1fr;
        gap: 4rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--bg-color);
        padding: 2.5rem;
        text-align: center;
        gap: 2rem;
        border-bottom: 1px solid var(--border-color);
    }

    .nav-links.active {
        display: flex;
    }

    .burger {
        display: flex;
    }
    
    .burger.toggle span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 4px);
    }
    .burger.toggle span:nth-child(2) {
        opacity: 0;
    }
    .burger.toggle span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -4px);
    }

    .hero-content h1 {
        font-size: 2.35rem;
    }

    .page-content {
        padding: 1.5rem;
    }
    
    .gallery-grid {
        column-count: 1;
        column-gap: 0;
    }

    .gallery-item {
        margin-bottom: 1rem;
        min-height: auto;
    }

    .item-overlay {
        background-color: rgba(10, 10, 10, 0.7);
        padding: 1.25rem;
    }
    .item-text {
        font-size: 0.85rem;
    }

    .lightbox-info-btn {
        width: 32px;
        height: 32px;
        top: 8px;
        right: 8px;
    }
}