/* ==========================================================================
   1. ПЕРЕМЕННЫЕ И БАЗОВЫЕ СТИЛИ
   ========================================================================== */
:root {
    --bg-deep: #0b0f19;
    --bg-card: rgba(22, 28, 44, 0.78);
    --bg-inner: rgba(11, 15, 25, 0.65);
    --text-primary: #ffffff;
    --text-secondary: #b0b7c6;
    --accent-honey: #ff9f1c;
    --accent-honey-bright: #ffbe0b;
    --accent-glow: rgba(255, 159, 28, 0.32);
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --transition-smooth: all 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    background-color: var(--bg-deep);
}

body {
    background-color: var(--bg-deep);
    color: var(--text-primary);
    font-family: var(--font-main);
    line-height: 1.55;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: 1080px;
    width: 100%;
    margin: 0 auto;
}

/* ==========================================================================
   2. ЖИВОЙ ФОН: СЕВЕРНОЕ СИЯНИЕ И ЗВЁЗДЫ
   ========================================================================== */
.sky-background {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
    background: radial-gradient(ellipse at top, #161f35 0%, #0b0f19 70%, #070a12 100%);
}

#stars-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
}

.aurora {
    position: absolute;
    border-radius: 50%;
    filter: blur(95px);
    opacity: 0.45;
    will-change: transform, opacity;
    transform: translateZ(0);
    animation: auroraFloat 14s infinite alternate ease-in-out;
}

.aurora-1 {
    width: 55vw;
    height: 45vh;
    top: -10%;
    left: -10%;
    background: radial-gradient(circle, rgba(255, 159, 28, 0.45), transparent 70%);
}

.aurora-2 {
    width: 50vw;
    height: 50vh;
    top: 15%;
    right: -12%;
    background: radial-gradient(circle, rgba(0, 245, 212, 0.28), rgba(58, 134, 255, 0.25), transparent 70%);
    animation-duration: 18s;
    animation-delay: -4s;
}

.aurora-3 {
    width: 60vw;
    height: 45vh;
    bottom: -15%;
    left: 20%;
    background: radial-gradient(circle, rgba(255, 183, 3, 0.25), rgba(131, 56, 236, 0.22), transparent 70%);
    animation-duration: 22s;
}

@keyframes auroraFloat {
    0% { transform: translate3d(0, 0, 0) scale(1) rotate(0deg); }
    50% { transform: translate3d(40px, -30px, 0) scale(1.1) rotate(5deg); }
    100% { transform: translate3d(-30px, 25px, 0) scale(0.95) rotate(-4deg); }
}

/* ==========================================================================
   3. ШАПКА САЙТА И МОДАЛЬНОЕ ОКНО АДМИНА
   ========================================================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 18px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    background: rgba(11, 15, 25, 0.78);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-brand {
    font-size: 17px;
    font-weight: 900;
    letter-spacing: 0.08em;
}

.nav-brand span {
    color: var(--accent-honey);
}

.nav-links {
    display: flex;
    gap: 28px;
}

.nav-link {
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.09em;
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.btn-outline {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 8px 18px;
    border-radius: 999px;
    font-family: var(--font-main);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-outline:hover {
    border-color: var(--accent-honey);
    color: var(--accent-honey);
    box-shadow: 0 0 16px var(--accent-glow);
}

.mobile-menu-btn {
    display: none;
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    border-radius: 8px;
    padding: 6px 11px;
    font-size: 16px;
    cursor: pointer;
}

/* Модальное окно ввода ПИН-кода */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(5, 8, 15, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
    padding: 20px;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 159, 28, 0.35);
    border-radius: 24px;
    padding: 36px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.7);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
}

.modal-card h3 {
    font-size: 22px;
    margin-bottom: 8px;
}

.modal-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.modal-card input {
    width: 100%;
    text-align: center;
    font-size: 22px;
    letter-spacing: 0.3em;
    padding: 12px;
    border-radius: 14px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    background: var(--bg-inner);
    color: #fff;
    margin-bottom: 16px;
    outline: none;
}

/* ==========================================================================
   4. ГЛАВНЫЙ ЭКРАН (HERO)
   ========================================================================== */
main {
    position: relative;
    z-index: 2;
}

.hero {
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 100px 24px 60px;
}

.hero-scroll-wrap, .hero-load-wrap {
    text-align: center;
    will-change: transform, opacity;
}

.hero-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--accent-honey-bright);
    background: rgba(255, 159, 28, 0.14);
    border: 1px solid rgba(255, 159, 28, 0.35);
    padding: 7px 18px;
    border-radius: 999px;
    margin-bottom: 20px;
}

.hero-title {
    font-size: clamp(54px, 13.5vw, 175px);
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 0.95;
    text-transform: uppercase;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #ffffff 0%, #ffe6a7 28%, #ffb703 60%, #fb5607 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 10px 35px rgba(255, 159, 28, 0.28));
    animation: titleShimmer 6s infinite alternate ease-in-out;
}

@keyframes titleShimmer {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.hero-tagline {
    font-size: clamp(15px, 1.4vw, 18px);
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto 30px;
}

.hero-buttons {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-honey {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-honey-bright), var(--accent-honey));
    color: #0b0f19;
    border: none;
    border-radius: 999px;
    padding: 14px 30px;
    font-family: var(--font-main);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.06em;
    cursor: pointer;
    box-shadow: 0 8px 25px var(--accent-glow);
    transition: var(--transition-smooth);
}

.btn-honey:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 12px 35px rgba(255, 183, 3, 0.55);
}

.btn-glass {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 999px;
    padding: 14px 30px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.06em;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: var(--transition-smooth);
}

.btn-glass:hover {
    border-color: var(--accent-honey);
    color: var(--accent-honey);
}

.scroll-down-btn {
    position: absolute;
    bottom: 22px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--text-secondary);
}

.scroll-arrow {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: 1px solid rgba(255, 159, 28, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-honey);
    animation: bounceArrow 2s infinite ease-in-out;
}

@keyframes bounceArrow {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(6px); }
}

/* ==========================================================================
   5. ЛЕНТА СОБЫТИЙ, АДМИНКА, РЕАКЦИИ И КОММЕНТАРИИ С ФОТО/ВИДЕО
   ========================================================================== */
.feed-section {
    padding: 50px 24px 60px;
}

.section-header {
    text-align: center;
    margin-bottom: 42px;
}

.section-subtitle {
    display: block;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.18em;
    color: var(--accent-honey);
    margin-bottom: 8px;
}

.section-title {
    font-size: clamp(26px, 3.6vw, 42px);
    font-weight: 800;
    margin-bottom: 10px;
}

.section-desc {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    font-size: 15px;
}

/* Панель администратора */
.admin-panel {
    background: rgba(255, 159, 28, 0.08);
    border: 1px solid rgba(255, 159, 28, 0.4);
    border-radius: 24px;
    padding: 32px;
    margin-bottom: 40px;
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.admin-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 22px;
    flex-wrap: wrap;
    gap: 12px;
}

.admin-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.admin-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.admin-submit-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

.file-input {
    padding: 10px !important;
}

/* Карточка поста в ленте */
.posts-feed {
    display: flex;
    flex-direction: column;
    gap: 32px;
    margin-bottom: 56px;
}

.post-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 26px;
    padding: 34px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
    transition: var(--transition-smooth);
}

.post-card:hover {
    border-color: rgba(255, 159, 28, 0.35);
}

.post-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 10px;
}

.post-badges {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.post-tag {
    font-size: 11px;
    font-weight: 800;
    color: #0b0f19;
    background: var(--accent-honey-bright);
    padding: 5px 14px;
    border-radius: 999px;
}

.post-date {
    font-size: 13px;
    color: var(--text-secondary);
}

.admin-post-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.edit-post-btn {
    background: rgba(255, 183, 3, 0.14);
    color: var(--accent-honey-bright);
    border: 1px solid rgba(255, 183, 3, 0.38);
    padding: 6px 14px;
    border-radius: 999px;
    font-family: var(--font-main);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.edit-post-btn:hover {
    background: rgba(255, 183, 3, 0.26);
    transform: translateY(-1px);
}

.delete-post-btn {
    background: rgba(255, 70, 70, 0.15);
    color: #ff6b6b;
    border: 1px solid rgba(255, 70, 70, 0.3);
    padding: 6px 14px;
    border-radius: 999px;
    font-family: var(--font-main);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.delete-post-btn:hover {
    background: rgba(255, 70, 70, 0.28);
    transform: translateY(-1px);
}

.post-title {
    font-size: clamp(20px, 2.5vw, 26px);
    font-weight: 800;
    margin-bottom: 12px;
}

.post-text {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 20px;
    white-space: pre-line;
}

/* ИСПРАВЛЕННОЕ ОТОБРАЖЕНИЕ ФОТО И ВИДЕО В ПОСТАХ (БЕЗ ОБРЕЗКИ 16:9 И 9:16) */
.post-media {
    margin-bottom: 22px;
    border-radius: 18px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: #070a12;
    display: flex;
    justify-content: center;
    align-items: center;
}

.post-media img,
.post-media video {
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 620px;
    object-fit: contain;
    display: block;
}

/* Панель эмоций (Реакций) */
.reactions-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    padding-bottom: 22px;
    margin-bottom: 22px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.reaction-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
    padding: 7px 14px;
    border-radius: 999px;
    font-family: var(--font-main);
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.reaction-btn:hover {
    background: rgba(255, 159, 28, 0.15);
    border-color: var(--accent-honey);
    transform: translateY(-2px);
}

.comments-counter {
    margin-left: auto;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

/* Список комментариев */
.comments-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin-bottom: 20px;
}

.no-comments {
    font-size: 13px;
    color: var(--text-secondary);
    font-style: italic;
}

.comment-item {
    display: flex;
    gap: 14px;
    background: var(--bg-inner);
    padding: 14px 18px;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.comment-avatar {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-honey-bright), var(--accent-honey));
    color: #0b0f19;
    font-weight: 800;
    font-size: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.comment-content {
    flex-grow: 1;
    min-width: 0;
}

.comment-meta {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 4px;
    flex-wrap: wrap;
}

.comment-meta strong {
    font-size: 14px;
    color: var(--accent-honey-bright);
}

.comment-meta span {
    font-size: 11px;
    color: var(--text-secondary);
}

.delete-comment-btn {
    margin-left: auto;
    background: rgba(255, 70, 70, 0.14);
    color: #ff6b6b;
    border: 1px solid rgba(255, 70, 70, 0.3);
    padding: 3px 10px;
    border-radius: 999px;
    font-family: var(--font-main);
    font-size: 11px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.delete-comment-btn:hover {
    background: rgba(255, 70, 70, 0.28);
}

.comment-content p {
    font-size: 14px;
    color: var(--text-primary);
    word-break: break-word;
}

/* ИСПРАВЛЕННОЕ ОТОБРАЖЕНИЕ ФОТО И ВИДЕО В КОММЕНТАРИЯХ (БЕЗ ОБРЕЗКИ) */
.comment-media {
    margin-top: 10px;
    max-width: 100%;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: #070a12;
    display: inline-flex;
    justify-content: center;
    align-items: center;
}

.comment-media img,
.comment-media video {
    width: auto;
    max-width: 100%;
    height: auto;
    max-height: 380px;
    object-fit: contain;
    display: block;
}

/* Форма добавления комментария */
.comment-form {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 18px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.comment-inputs-row {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 12px;
}

.comment-inputs-row input {
    background: var(--bg-inner);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    padding: 11px 14px;
    color: #fff;
    font-family: var(--font-main);
    font-size: 13px;
    outline: none;
}

.comment-inputs-row input:focus {
    border-color: var(--accent-honey);
}

.comment-actions-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.media-upload-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 700;
    color: var(--accent-honey-bright);
    background: rgba(255, 159, 28, 0.12);
    border: 1px dashed rgba(255, 159, 28, 0.4);
    padding: 8px 14px;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.media-upload-label:hover {
    background: rgba(255, 159, 28, 0.22);
}

.media-upload-label input {
    display: none;
}

.file-name-preview {
    font-size: 12px;
    color: var(--text-secondary);
    margin-right: auto;
}

.btn-comment-submit {
    background: var(--accent-honey);
    color: #0b0f19;
    border: none;
    border-radius: 999px;
    padding: 9px 20px;
    font-family: var(--font-main);
    font-size: 12px;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-comment-submit:hover {
    background: var(--accent-honey-bright);
    transform: translateY(-2px);
}

/* ==========================================================================
   6. ВИТРИНА И БЛОК КОНТАКТОВ
   ========================================================================== */
.showcase-banner {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 28px;
    padding: 40px;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 36px;
    align-items: center;
}

.showcase-text h3 {
    font-size: clamp(22px, 2.8vw, 32px);
    font-weight: 800;
    margin-bottom: 12px;
}

.showcase-text p {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 24px;
}

.stats-row {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.stat-box strong {
    display: block;
    font-size: 20px;
    font-weight: 900;
    color: var(--accent-honey-bright);
}

.stat-box span {
    font-size: 12px;
    color: var(--text-secondary);
}

.showcase-media img {
    width: 100%;
    height: 270px;
    object-fit: cover;
    border-radius: 18px;
}

.contact {
    padding: 30px 24px 90px;
}

.contact-container {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 159, 28, 0.25);
    border-radius: 28px;
    padding: 42px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 42px;
}

.contact-desc {
    color: var(--text-secondary);
    font-size: 15px;
    margin-bottom: 22px;
}

.contact-preview {
    display: flex;
    align-items: center;
    gap: 14px;
    background: rgba(255, 255, 255, 0.04);
    padding: 12px 16px;
    border-radius: 16px;
    margin-bottom: 24px;
}

.contact-preview img {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    object-fit: cover;
}

.contact-preview-text strong {
    display: block;
    font-size: 15px;
}

.contact-preview-text span {
    font-size: 13px;
    color: var(--text-secondary);
}

.contact-links {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}

.contact-label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--accent-honey);
    text-transform: uppercase;
}

.contact-value {
    font-size: 16px;
    font-weight: 700;
}

.contact-link {
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.contact-link:hover {
    color: var(--accent-honey-bright);
    text-shadow: 0 0 12px var(--accent-glow);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-group input,
.form-group textarea,
.form-group select {
    background: var(--bg-inner);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 12px;
    padding: 13px 16px;
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 14px;
    outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent-honey);
}

.full-width {
    width: 100%;
}

/* ==========================================================================
   7. СВЕТЯЩАЯСЯ КНОПКА "НАВЕРХ" СПРАВА ВНИЗУ
   ========================================================================== */
.back-to-top {
    position: fixed;
    bottom: 28px;
    right: 28px;
    background: linear-gradient(135deg, var(--accent-honey-bright), var(--accent-honey));
    color: #0b0f19;
    border: none;
    border-radius: 999px;
    padding: 12px 22px;
    font-family: var(--font-main);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    cursor: pointer;
    box-shadow: 0 8px 25px var(--accent-glow);
    z-index: 99;
    opacity: 0;
    pointer-events: none;
    transform: translateY(15px);
    transition: var(--transition-smooth);
}

.back-to-top.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 35px rgba(255, 183, 3, 0.65);
}

/* ==========================================================================
   8. АДАПТИВНОСТЬ И ЖЕСТКАЯ ОПТИМИЗАЦИЯ ПОД ANDROID / МОБИЛЬНЫЕ УСТРОЙСТВА
   ========================================================================== */
@media (max-width: 860px) {
    .navbar {
        padding: 14px 20px;
    }

    .mobile-menu-btn {
        display: block;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(11, 15, 25, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 16px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        display: none;
    }

    .nav-links.mobile-open {
        display: flex;
    }

    .admin-form-row,
    .comment-inputs-row,
    .showcase-banner,
    .contact-container {
        grid-template-columns: 1fr;
    }

    .post-card,
    .showcase-banner,
    .contact-container {
        padding: 24px 18px;
    }

    .comments-counter {
        width: 100%;
        margin-left: 0;
        margin-top: 6px;
    }

    .back-to-top {
        bottom: 18px;
        right: 18px;
        padding: 10px 16px;
    }
}

/* Отключение тяжелых GPU-фильтров размытия на смартфонах для стабильных 60 FPS */
@media (max-width: 768px) {
    .navbar,
    .modal-overlay,
    .btn-glass,
    .admin-panel,
    .post-card,
    .showcase-banner,
    .contact-container {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
    }

    .navbar {
        background: rgba(11, 15, 25, 0.96) !important;
    }

    .post-card,
    .showcase-banner,
    .contact-container {
        background: rgba(18, 24, 38, 0.94) !important;
    }

    .aurora {
        filter: blur(60px);
        opacity: 0.38;
    }
}