@charset "utf-8";
/**
 * BalanceCleaner — Split Screen Native Showcase
 * Architecture inspired by Split Index & Nightwell with authentic BalanceCleaner emerald/mint design.
 * Bilingual Apple-style documentation (Russian / English).
 */

/* =========================================================================
   MARK: - 1. DESIGN TOKENS & THEMING (Цветовые токены и темы оформления)
   ========================================================================= */
:root {
	/* MARK: - Dark Theme Palette (Основная темная тема BalanceCleaner) */
	color-scheme: dark;
	--bg: #07110d;
	--bg-gradient: radial-gradient(circle at 18% 0%, rgba(87, 217, 159, 0.16) 0%, transparent 45%), linear-gradient(160deg, #07110d 0%, #0d1e17 50%, #050d0a 100%);
	--surface: rgba(16, 27, 23, 0.88);
	--surface-solid: #101b17;
	--surface2: #13231c;
	--surface-card: rgba(19, 36, 29, 0.75);
	--surface-hover: rgba(26, 52, 41, 0.85);
	--text: #effff7;
	--text-secondary: #91aaa0;
	--muted: #6b857a;
	--line: rgba(213, 247, 229, 0.12);
	--line-strong: rgba(87, 217, 159, 0.32);
	--green: #57d99f;
	--green-glow: rgba(87, 217, 159, 0.28);
	--deep: #1d8060;
	--soft: #baf5d5;
	--on-accent: #06150e;
	
	/* Warm Sand Canvas Pedestal / Подложка теплого песочного цвета под карточки мокапов (как в Nightwell) */
	--canvas-card-bg: radial-gradient(135% 115% at 50% 25%, #F4EFEB 0%, #E9E1D5 50%, #DDD2C4 100%);
	--canvas-card-border: rgba(200, 187, 170, 0.45);
	--canvas-card-shadow: 0 24px 60px -15px rgba(2, 10, 20, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.4) inset;
	--caption-bg: linear-gradient(to top, rgba(220, 209, 194, 0.98) 0%, rgba(232, 223, 211, 0.88) 60%, transparent 100%);
	--caption-title: #064e3b;
	--caption-sub: #4b5563;

	/* Layout Ratios (Пропорции разделенного экрана: левая инфо-панель и правый холст) */
	--info-width: 44vw;
	--canvas-width: 56vw;
	--transition-panel: 0.45s cubic-bezier(0.23, 1, 0.32, 1);
	
	/* Matching Nightwell Typography / Шрифты, идентичные Nightwell */
	--font-serif: 'Playfair Display', Georgia, serif;
	--font-sans: 'Instrument Sans', -apple-system, BlinkMacSystemFont, sans-serif;
	--font-mono: 'DM Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* =========================================================================
   MARK: - 2. BASE RESET & BODY (Сброс стилей и общая оболочка)
   ========================================================================= */
*,
*::before,
*::after {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

html {
	font-size: 15px;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	scroll-behavior: smooth;
}

body {
	background: var(--bg-gradient);
	background-color: var(--bg);
	color: var(--text);
	font-family: var(--font-sans);
	overflow: hidden;
	height: 100vh;
	width: 100vw;
	position: relative;
	transition: background-color 0.3s ease, color 0.3s ease;
}

/* Theme Crossfade Blur Effect / Эффект кинематографичного блюра при переключении темы */
body.theme-blur {
	filter: blur(12px);
	transition: filter 0.25s ease;
}

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

/* =========================================================================
   MARK: - 3. SITE HEADER & NAVIGATION (Шапка, бренд, меню и переключатели)
   ========================================================================= */
.site-header {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 20;
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.9rem 2.2rem;
	background: linear-gradient(to bottom, rgba(7, 17, 13, 0.96) 0%, rgba(7, 17, 13, 0.80) 65%, transparent 100%);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
	border-bottom: 1px solid var(--line);
	pointer-events: none;
}

.site-header > * {
	pointer-events: auto;
}

.site-brand-group {
	display: flex;
	align-items: center;
	gap: 0.85rem;
}

.site-brand {
	display: inline-flex;
	align-items: center;
	gap: 0.6rem;
	font-weight: 700;
	font-size: 1.05rem;
	letter-spacing: -0.01em;
	color: var(--text);
	cursor: pointer;
}

.site-brand-icon {
	width: 26px;
	height: 26px;
	border-radius: 6px;
	display: block;
}

.portfolio-back-link {
	display: inline-flex;
	align-items: center;
	gap: 0.35rem;
	font-family: var(--font-mono);
	font-size: 0.68rem;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--text-secondary);
	padding: 0.32rem 0.68rem;
	border: 1px solid var(--line);
	border-radius: 5px;
	background: var(--surface);
	transition: all 0.2s ease;
}

.portfolio-back-link:hover {
	color: var(--green);
	border-color: var(--green);
	background: var(--surface-hover);
}

/* Navigation Tabs / Вкладки разделов */
.site-nav-tabs {
	display: flex;
	align-items: center;
	gap: 0.3rem;
}

.site-nav-tabs a {
	font-family: var(--font-sans);
	font-weight: 500;
	font-size: 0.76rem;
	letter-spacing: 0.02em;
	color: var(--text-secondary);
	padding: 0.35rem 0.75rem;
	border-radius: 6px;
	position: relative;
	transition: all 0.2s ease;
	cursor: pointer;
}

.site-nav-tabs a:hover {
	color: var(--text);
	background: var(--surface-hover);
}

.site-nav-tabs a.nav-active {
	color: var(--on-accent);
	background: var(--green);
	font-weight: 600;
	box-shadow: 0 0 14px var(--green-glow);
}

/* Header Actions / Язык, Тема, Меню */
.site-actions {
	display: flex;
	align-items: center;
	gap: 0.6rem;
}

/* Custom Language Dropdown (7 Languages) / Выбор из 7 языков */
.custom-lang {
	position: relative;
}

.lang-btn {
	background: var(--surface);
	border: 1px solid var(--line);
	border-radius: 6px;
	padding: 0.35rem 0.65rem;
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	font-family: var(--font-mono);
	font-size: 0.7rem;
	font-weight: 600;
	color: var(--text);
	cursor: pointer;
	transition: all 0.2s ease;
}

.lang-btn:hover {
	border-color: var(--green);
}

.lang-menu {
	position: absolute;
	top: calc(100% + 6px);
	right: 0;
	min-width: 145px;
	background: var(--surface-solid);
	border: 1px solid var(--line);
	border-radius: 8px;
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
	padding: 0.35rem 0;
	display: none;
	flex-direction: column;
	z-index: 100;
	backdrop-filter: blur(16px);
	-webkit-backdrop-filter: blur(16px);
}

.lang-menu.show {
	display: flex;
}

.lang-menu button {
	background: transparent;
	border: none;
	padding: 0.45rem 0.85rem;
	font-family: var(--font-sans);
	font-size: 0.76rem;
	color: var(--text-secondary);
	text-align: left;
	cursor: pointer;
	transition: all 0.15s ease;
	display: flex;
	align-items: center;
	gap: 0.5rem;
}

.lang-menu button:hover {
	background: var(--surface-hover);
	color: var(--text);
}

.lang-menu button.active {
	color: var(--green);
	font-weight: 600;
}

/* Header App Store Button / Кнопка App Store в шапке */
.header-appstore-btn {
	display: inline-flex;
	align-items: center;
	gap: 0.45rem;
	background: rgba(87, 217, 159, 0.1);
	border: 1px solid rgba(87, 217, 159, 0.35);
	border-radius: 20px;
	padding: 0.35rem 0.85rem;
	color: #FFFFFF;
	font-family: var(--font-mono);
	font-size: 0.68rem;
	letter-spacing: 0.04em;
	text-decoration: none;
	transition: all 0.25s ease;
	backdrop-filter: blur(8px);
	-webkit-backdrop-filter: blur(8px);
}

.header-appstore-btn:hover {
	background: var(--green);
	color: #07110d;
	border-color: var(--green);
	box-shadow: 0 4px 14px var(--green-glow);
	transform: translateY(-1px);
}

.header-appstore-btn svg {
	width: 13px;
	height: 13px;
	fill: currentColor;
	flex-shrink: 0;
}

.header-apple-logo {
	height: 14px;
	width: auto;
	display: inline-block;
	vertical-align: middle;
	object-fit: contain;
}

/* Theme Toggle Button / Кнопка переключения темы */
.theme-btn {
	background: var(--surface);
	border: 1px solid var(--line);
	border-radius: 6px;
	width: 32px;
	height: 32px;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	color: var(--text);
	cursor: pointer;
	transition: all 0.25s ease;
}

.theme-btn:hover {
	border-color: var(--green);
	color: var(--green);
}

.theme-btn svg {
	width: 16px;
	height: 16px;
	fill: none;
	stroke: currentColor;
	stroke-width: 1.8;
}

/* Mobile Hamburger Button */
.hamburger-btn {
	display: none;
	background: var(--surface);
	border: 1px solid var(--line);
	border-radius: 6px;
	width: 32px;
	height: 32px;
	align-items: center;
	justify-content: center;
	color: var(--text);
	cursor: pointer;
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
	position: fixed;
	inset: 0;
	background: rgba(7, 17, 13, 0.95);
	backdrop-filter: blur(16px);
	-webkit-backdrop-filter: blur(16px);
	z-index: 99;
	display: none;
	flex-direction: column;
	padding: 2.5rem 1.8rem;
	gap: 1.2rem;
}

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

.mobile-nav-close {
	align-self: flex-end;
	background: transparent;
	border: none;
	color: var(--text);
	font-size: 1.8rem;
	cursor: pointer;
}

.mobile-nav-overlay a {
	font-size: 1.1rem;
	font-weight: 600;
	padding: 0.5rem 0;
	border-bottom: 1px solid var(--line);
	color: var(--text);
}

/* =========================================================================
   MARK: - 4. SPLIT CONTAINER & LAYOUT (Двухпанельный контейнер)
   ========================================================================= */
.split-container {
	display: flex;
	height: 100vh;
	width: 100vw;
	padding-top: 3.4rem;
	padding-bottom: 2.2rem;
}

/* Divider / Разделитель */
.split-divider {
	width: 1px;
	align-self: stretch;
	background: var(--line);
	position: relative;
	z-index: 5;
	flex-shrink: 0;
}

/* =========================================================================
   MARK: - 5. LEFT SIDE: PANEL SYSTEM (Левая сторона — система панелей)
   ========================================================================= */
.left-side {
	width: var(--info-width);
	position: relative;
	overflow: hidden;
	flex-shrink: 0;
}

.panel {
	position: absolute;
	inset: 0;
	display: flex;
	flex-direction: column;
	justify-content: flex-start;
	opacity: 0;
	transform: translateY(16px);
	transition: opacity var(--transition-panel), transform var(--transition-panel);
	pointer-events: none;
	overflow-y: auto;
	scrollbar-width: none !important;
	-ms-overflow-style: none !important;
}

.panel::-webkit-scrollbar {
	display: none !important;
	width: 0 !important;
}

.panel.panel-active {
	opacity: 1;
	transform: translateY(0);
	pointer-events: auto;
	z-index: 2;
}

/* Common Panel Header / Заголовок панели */
.panel-hero {
	padding: 2.2rem 2.8rem 1.4rem;
}

.panel-eyebrow {
	font-family: var(--font-mono);
	font-size: 0.65rem;
	font-weight: 500;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--green);
	display: inline-block;
	margin-bottom: 0.6rem;
}

.panel-title {
	font-family: var(--font-serif);
	font-weight: 700;
	font-size: clamp(1.4rem, 2.3vw, 2.1rem);
	line-height: 1.15;
	letter-spacing: -0.01em;
	color: var(--text);
	margin-bottom: 0.6rem;
}

.panel-lead {
	font-family: var(--font-sans);
	font-size: 0.82rem;
	line-height: 1.6;
	color: var(--text-secondary);
	max-width: 440px;
}

/* App Store Badge / Кнопка App Store */
.app-badge-box {
	margin-top: 1rem;
	display: flex;
	align-items: center;
	gap: 0.8rem;
}

.app-badge {
	display: inline-flex;
	align-items: center;
	gap: 0.5rem;
	padding: 0.45rem 1rem;
	border-radius: 20px;
	background: var(--surface-card);
	border: 1px solid var(--line-strong);
	font-family: var(--font-mono);
	font-size: 0.68rem;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--green);
	cursor: default;
}

/* Interactive Items List / Интерактивный список элементов */
.interactive-list {
	list-style: none;
	border-top: 1px solid var(--line);
	margin-bottom: 2rem;
}

.interactive-item {
	border-bottom: 1px solid var(--line);
	cursor: pointer;
	position: relative;
	overflow: hidden;
	transition: background 0.25s ease;
}

.interactive-item::before {
	content: '';
	position: absolute;
	inset: 0;
	background: linear-gradient(90deg, rgba(87, 217, 159, 0.18) 0%, var(--surface-hover) 100%);
	border-left: 3px solid var(--green);
	transform: scaleY(0);
	transform-origin: bottom;
	transition: transform 0.35s cubic-bezier(0.23, 1, 0.32, 1);
	z-index: 0;
}

.interactive-item:hover::before,
.interactive-item.active::before {
	transform: scaleY(1);
}

.interactive-link {
	display: flex;
	align-items: baseline;
	gap: 1.2rem;
	padding: 1rem 2.8rem;
	position: relative;
	z-index: 1;
	transition: color 0.25s ease;
}

.item-num {
	font-family: var(--font-mono);
	font-weight: 500;
	font-size: 0.7rem;
	letter-spacing: 0.08em;
	color: var(--green);
	opacity: 0.85;
	min-width: 1.8rem;
}

.item-title {
	font-family: var(--font-sans);
	font-weight: 700;
	font-size: 0.94rem;
	letter-spacing: -0.01em;
	color: var(--text);
	transition: color 0.25s ease;
}

.interactive-item:hover .item-title,
.interactive-item.active .item-title {
	color: var(--green);
}

.item-tag {
	font-family: var(--font-mono);
	font-size: 0.62rem;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--text-secondary);
	margin-left: auto;
	opacity: 0.75;
}

.item-arrow {
	width: 0;
	overflow: hidden;
	transition: width 0.3s cubic-bezier(0.23, 1, 0.32, 1);
	display: flex;
	align-items: center;
}

.item-arrow svg {
	width: 14px;
	height: 14px;
	stroke: var(--green);
	fill: none;
	stroke-width: 2;
}

.interactive-item:hover .item-arrow,
.interactive-item.active .item-arrow {
	width: 20px;
}

/* ── Panel: Features (Nightwell-Style Layout & Typography) ── */
#panel-features {
	justify-content: center;
	padding: 1.4rem 0;
}

#panel-features .panel-header {
	padding: 0 2.8rem 1.3rem;
}

#panel-features .panel-header span {
	font-family: var(--font-mono);
	font-weight: 400;
	font-size: 0.68rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--text-secondary);
}

#panel-features .interactive-link {
	padding: 1.15rem 2.8rem;
}

#panel-features .item-title {
	font-family: var(--font-serif);
	font-weight: 800;
	font-size: clamp(1.05rem, 1.45vw, 1.35rem);
	text-transform: uppercase;
	letter-spacing: 0.02em;
	line-height: 1.15;
	color: var(--text);
	transition: color 0.3s ease;
}

#panel-features .interactive-item:hover .item-title,
#panel-features .interactive-item.active .item-title {
	color: #FFFFFF;
}

#panel-features .panel-footer {
	padding: 1.5rem 2.8rem 0;
	display: flex;
	justify-content: space-between;
	align-items: center;
}

.app-store-badge-btn {
	display: inline-flex;
	align-items: center;
	transition: transform 0.25s ease, filter 0.25s ease;
	text-decoration: none;
}

.app-store-badge-btn:hover {
	transform: scale(1.05);
	filter: drop-shadow(0 4px 14px var(--green-glow));
}

.app-store-badge-img {
	height: 38px;
	width: auto;
	display: block;
	border-radius: 0;
}


/* =========================================================================
   MARK: - 6. SCREENS STICKY FILTER (Липкий фильтр моделей устройств)
   ========================================================================= */
.screens-sticky-header {
	position: sticky;
	top: 0;
	z-index: 10;
	background: var(--surface);
	backdrop-filter: blur(16px);
	-webkit-backdrop-filter: blur(16px);
	padding: 1.8rem 2.8rem 0.8rem;
	border-bottom: 1px solid var(--line);
}

.model-filter-nav {
	display: flex;
	gap: 0.45rem;
	flex-wrap: wrap;
	margin-top: 0.6rem;
}

.filter-pill {
	background: var(--surface-card);
	border: 1px solid var(--line);
	border-radius: 20px;
	padding: 0.32rem 0.8rem;
	font-family: var(--font-mono);
	font-size: 0.65rem;
	text-transform: uppercase;
	letter-spacing: 0.08em;
	color: var(--text-secondary);
	cursor: pointer;
	transition: all 0.2s ease;
}

.filter-pill:hover {
	color: var(--text);
	border-color: var(--green);
}

.filter-pill.active {
	background: var(--green);
	color: var(--on-accent);
	border-color: var(--green);
	font-weight: 700;
	box-shadow: 0 0 12px var(--green-glow);
}

/* =========================================================================
   MARK: - 7. GUIDE, ABOUT, SUPPORT, PRIVACY PANELS (Панели контента)
   ========================================================================= */
.panel-body-content {
	padding: 1.8rem 2.8rem 3rem;
}

/* Guide Step Cards / Карточки шагов инструкции */
.guide-cards {
	display: flex;
	flex-direction: column;
	gap: 0.9rem;
	margin-top: 1rem;
}

.guide-step-card {
	background: var(--surface-card);
	border: 1px solid var(--line);
	border-radius: 10px;
	padding: 1.1rem 1.4rem;
	transition: all 0.25s ease;
	cursor: pointer;
}

.guide-step-card:hover,
.guide-step-card.active {
	border-color: var(--green);
	background: var(--surface-hover);
	transform: translateX(4px);
}

.guide-step-header {
	display: flex;
	align-items: center;
	gap: 0.7rem;
	margin-bottom: 0.4rem;
}

.guide-step-badge {
	font-family: var(--font-mono);
	font-size: 0.62rem;
	font-weight: 700;
	color: var(--green);
	background: rgba(87, 217, 159, 0.14);
	padding: 0.15rem 0.45rem;
	border-radius: 4px;
}

.guide-step-title {
	font-weight: 700;
	font-size: 0.88rem;
	color: var(--text);
}

.guide-step-desc {
	font-size: 0.78rem;
	line-height: 1.55;
	color: var(--text-secondary);
}

/* About / Story Stats / Статистика в секции о продукте */
.stats-grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 1.2rem;
	margin-top: 2rem;
	padding-top: 1.6rem;
	border-top: 1px solid var(--line);
}

.stat-item {
	display: flex;
	flex-direction: column;
	gap: 0.25rem;
}

.stat-val {
	font-family: var(--font-sans);
	font-weight: 800;
	font-size: 1.55rem;
	color: var(--green);
}

.stat-lbl {
	font-family: var(--font-mono);
	font-size: 0.6rem;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--text-secondary);
}

/* FAQ Details Accordions / Аккордеоны вопросов */
.faq-container {
	margin-top: 1.8rem;
	display: flex;
	flex-direction: column;
	gap: 0.65rem;
}

.faq-card {
	background: var(--surface-card);
	border: 1px solid var(--line);
	border-radius: 8px;
	overflow: hidden;
	transition: all 0.2s ease;
}

.faq-card:hover {
	border-color: var(--line-strong);
}

.faq-card[open] {
	border-color: var(--green);
	background: var(--surface-hover);
}

.faq-card summary {
	padding: 0.85rem 1.15rem;
	font-weight: 600;
	font-size: 0.82rem;
	color: var(--text);
	cursor: pointer;
	list-style: none;
	display: flex;
	align-items: center;
	justify-content: space-between;
	user-select: none;
}

.faq-card summary::-webkit-details-marker {
	display: none;
}

.faq-card summary::after {
	content: '+';
	font-family: var(--font-mono);
	font-size: 1.1rem;
	color: var(--green);
	transition: transform 0.25s ease;
}

.faq-card[open] summary::after {
	content: '−';
	transform: rotate(180deg);
}

.faq-body {
	padding: 0 1.15rem 1rem;
	font-size: 0.78rem;
	line-height: 1.6;
	color: var(--text-secondary);
	border-top: 1px solid rgba(87, 217, 159, 0.1);
	padding-top: 0.65rem;
}

/* Support Form / Форма поддержки */
.support-form {
	display: flex;
	flex-direction: column;
	gap: 1.1rem;
	margin-top: 1.4rem;
	background: var(--surface-card);
	border: 1px solid var(--line);
	border-radius: 10px;
	padding: 1.4rem;
}

.form-field {
	display: flex;
	flex-direction: column;
	gap: 0.35rem;
}

.form-field label {
	font-family: var(--font-mono);
	font-size: 0.62rem;
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--text-secondary);
}

.form-field input,
.form-field textarea {
	background: var(--surface-solid);
	border: 1px solid var(--line);
	border-radius: 6px;
	padding: 0.65rem 0.85rem;
	color: var(--text);
	font-family: var(--font-sans);
	font-size: 0.82rem;
	outline: none;
	transition: border-color 0.2s ease;
}

.form-field input:focus,
.form-field textarea:focus {
	border-color: var(--green);
}

.form-field textarea {
	min-height: 75px;
	resize: vertical;
}

.btn-submit {
	align-self: flex-start;
	background: var(--green);
	color: var(--on-accent);
	font-weight: 700;
	font-size: 0.74rem;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	padding: 0.7rem 1.8rem;
	border: none;
	border-radius: 6px;
	cursor: pointer;
	transition: all 0.25s ease;
	box-shadow: 0 4px 16px var(--green-glow);
}

.btn-submit:hover {
	opacity: 0.9;
	transform: translateY(-1px);
}

/* Privacy Highlights / Карточки акцентов политики приватности */
.privacy-highlights {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 0.85rem;
	margin: 1.2rem 0 1.8rem;
}

.priv-card {
	background: var(--surface-card);
	border: 1px solid var(--line);
	border-radius: 8px;
	padding: 1rem;
	text-align: center;
}

.priv-card-icon {
	font-size: 1.4rem;
	margin-bottom: 0.4rem;
	display: inline-block;
}

.priv-card-title {
	font-size: 0.76rem;
	font-weight: 700;
	color: var(--text);
	margin-bottom: 0.3rem;
}

.priv-card-desc {
	font-size: 0.68rem;
	line-height: 1.45;
	color: var(--text-secondary);
}

/* Privacy Clauses / Статьи политики */
.privacy-clauses {
	display: flex;
	flex-direction: column;
	gap: 0.8rem;
	font-size: 0.78rem;
	line-height: 1.65;
	color: var(--text-secondary);
}

.privacy-clauses strong {
	color: var(--text);
}

.privacy-clauses a {
	color: var(--green);
	text-decoration: underline;
}

/* =========================================================================
   MARK: - 8. RIGHT SIDE: VISUAL CANVAS SHOWCASE (Правый холст мокапов)
   ========================================================================= */
.canvas-side {
	width: var(--canvas-width);
	position: relative;
	overflow: hidden;
	display: flex;
	align-items: center;
	justify-content: center;
	background: radial-gradient(circle at 50% 50%, rgba(87, 217, 159, 0.08) 0%, transparent 65%);
	flex-grow: 1;
}

.canvas-placeholder {
	position: absolute;
	inset: 2rem;
	border-radius: 18px;
	border: 1.5px dashed var(--line-strong);
	background: var(--surface);
	backdrop-filter: blur(8px);
	-webkit-backdrop-filter: blur(8px);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 0.9rem;
	transition: opacity 0.45s ease;
	z-index: 1;
}

.canvas-placeholder.hidden {
	opacity: 0;
	pointer-events: none;
}

.placeholder-icon {
	width: 48px;
	height: 48px;
	border-radius: 50%;
	border: 1.5px solid var(--line-strong);
	background: rgba(87, 217, 159, 0.1);
	display: flex;
	align-items: center;
	justify-content: center;
}

.placeholder-icon svg {
	width: 20px;
	height: 20px;
	stroke: var(--green);
	fill: none;
	stroke-width: 1.8;
}

.placeholder-label {
	font-family: var(--font-mono);
	font-size: 0.65rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	color: var(--text-secondary);
}

/* Canvas Image Container (Card Stage) / Сцена-карточка предпросмотра */
.canvas-image,
.canvas-context {
	position: absolute;
	inset: 2rem;
	opacity: 0;
	transform: scale(1.03);
	transition: opacity 0.55s cubic-bezier(0.23, 1, 0.32, 1), transform 0.55s cubic-bezier(0.23, 1, 0.32, 1);
	z-index: 0;
	background: var(--canvas-card-bg);
	border: 1px solid var(--canvas-card-border);
	box-shadow: var(--canvas-card-shadow);
	border-radius: 18px;
	overflow: hidden;
	padding: 1.5rem 1.5rem 4.5rem;
	display: flex;
	align-items: center;
	justify-content: center;
}

.canvas-image.visible,
.canvas-context.visible {
	opacity: 1;
	transform: scale(1);
	z-index: 2;
}

.canvas-image img,
.canvas-context img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	object-position: center center;
	display: block;
	filter: drop-shadow(0 14px 28px rgba(0, 0, 0, 0.3));
}

/* Video Mockup Frame & Screen with Mask / Видео-мокапы в холсте */
.mockup-stage {
	position: relative;
	max-height: 85%;
	max-width: 320px;
	width: 100%;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	filter: drop-shadow(0 18px 36px rgba(0, 0, 0, 0.45));
}

.mockup-wrap {
	position: relative;
	width: 100%;
	max-width: 100%;
	isolation: isolate;
	cursor: pointer;
}

.mockup-frame {
	position: relative;
	z-index: 2;
	display: block;
	width: 100%;
	height: auto;
	pointer-events: none;
	user-select: none;
}

.mockup-screen {
	position: absolute;
	z-index: 1;
	top: var(--vid-top);
	left: var(--vid-left);
	width: var(--vid-w);
	height: var(--vid-h);
	border-radius: var(--vid-radius, 40px);
	overflow: hidden;
	background: #000;
}

.mockup-video {
	display: block;
	width: 100%;
	height: 100%;
	object-fit: cover;
	background: #000;
	cursor: pointer;
}

/* Big Interactive Center Play Button */
.mockup-play-btn {
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: 60px;
	height: 60px;
	border-radius: 50%;
	background: rgba(7, 17, 13, 0.82);
	border: 2px solid var(--green);
	color: var(--green);
	display: flex;
	align-items: center;
	justify-content: center;
	cursor: pointer;
	z-index: 10;
	backdrop-filter: blur(8px);
	-webkit-backdrop-filter: blur(8px);
	box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 20px var(--green-glow);
	transition: all 0.25s cubic-bezier(0.23, 1, 0.32, 1);
	pointer-events: auto;
}

.mockup-play-btn:hover {
	transform: translate(-50%, -50%) scale(1.12);
	background: var(--green);
	color: #07110d;
}

.mockup-play-btn svg {
	width: 24px;
	height: 24px;
	fill: currentColor;
}

.mockup-play-btn .pause-icon {
	display: none;
}

.mockup-stage.is-playing .mockup-play-btn {
	opacity: 0;
	pointer-events: none;
}

.mockup-stage.is-playing:hover .mockup-play-btn {
	opacity: 1;
	pointer-events: auto;
}

.mockup-stage.is-playing .mockup-play-btn .play-icon {
	display: none;
}

.mockup-stage.is-playing .mockup-play-btn .pause-icon {
	display: block;
}

/* Control Pills Bar below Mockup */
.mockup-controls {
	display: flex;
	align-items: center;
	gap: 0.6rem;
	margin-top: 0.75rem;
	z-index: 5;
}

.mockup-ctrl-btn {
	background: rgba(13, 30, 23, 0.85);
	border: 1px solid var(--line-strong);
	border-radius: 20px;
	padding: 0.38rem 0.85rem;
	color: var(--text);
	font-family: var(--font-mono);
	font-size: 0.68rem;
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	cursor: pointer;
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	transition: all 0.2s ease;
}

.mockup-ctrl-btn:hover {
	border-color: var(--green);
	color: var(--green);
	background: rgba(87, 217, 159, 0.15);
}

/* VStack for About Showcase (Two stacked photos) */
.canvas-vstack {
	display: flex;
	flex-direction: column;
	gap: 0.9rem;
	width: 100%;
	height: 100%;
	align-items: center;
	justify-content: center;
	overflow: hidden;
}

.canvas-vstack img {
	width: 100%;
	max-height: 48%;
	object-fit: contain;
	object-position: center center;
	display: block;
	filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.35));
	border-radius: 8px;
}

/* Canvas Bottom Caption / Подпись к экрану */
.canvas-caption {
	position: absolute;
	bottom: 0;
	left: 0;
	right: 0;
	padding: 1.1rem 1.8rem 1rem;
	background: var(--caption-bg);
	border-top: 1px solid var(--line);
	opacity: 0;
	transform: translateY(6px);
	transition: opacity 0.4s ease 0.1s, transform 0.4s ease 0.1s;
}

.canvas-image.visible .canvas-caption,
.canvas-context.visible .canvas-caption {
	opacity: 1;
	transform: translateY(0);
}

.canvas-caption-title {
	font-family: var(--font-sans);
	font-weight: 700;
	font-size: 0.82rem;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	color: var(--caption-title);
}

.canvas-caption-sub {
	font-family: var(--font-mono);
	font-size: 0.65rem;
	color: var(--caption-sub);
	margin-top: 0.15rem;
}

/* =========================================================================
   MARK: - 9. SITE FOOTER (Подвал)
   ========================================================================= */
.site-footer {
	position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	z-index: 20;
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.75rem 2.2rem;
	background: var(--surface);
	backdrop-filter: blur(14px);
	-webkit-backdrop-filter: blur(14px);
	border-top: 1px solid var(--line);
	font-family: var(--font-mono);
	font-size: 0.62rem;
	letter-spacing: 0.06em;
	color: var(--text-secondary);
	pointer-events: none;
}

.site-footer > * {
	pointer-events: auto;
}

.footer-links {
	display: flex;
	align-items: center;
	gap: 0.8rem;
}

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

/* =========================================================================
   MARK: - 10. MOBILE RESPONSIVE (Мобильная адаптивность)
   ========================================================================= */
@media (max-width: 920px) {
	body {
		overflow-y: auto;
		overflow-x: hidden;
		height: auto;
	}

	.site-header {
		padding: 0.8rem 1.2rem;
	}

	.site-nav-tabs {
		display: none;
	}

	.hamburger-btn {
		display: inline-flex;
	}

	.split-container {
		flex-direction: column;
		height: auto;
		min-height: 100vh;
		padding-top: 3.8rem;
		padding-bottom: 0;
	}

	.left-side {
		width: 100%;
		min-height: auto;
		position: relative;
	}

	.panel {
		position: relative;
		display: none;
		min-height: auto;
		padding-bottom: 2rem;
	}

	.panel.panel-active {
		display: flex;
	}

	.panel-hero,
	.panel-body-content,
	.screens-sticky-header {
		padding-left: 1.4rem;
		padding-right: 1.4rem;
	}

	.interactive-link {
		padding: 0.9rem 1.4rem;
	}

	.split-divider {
		width: 100%;
		height: 1px;
	}

	.canvas-side {
		width: 100%;
		min-height: 55vh;
	}

	.canvas-image,
	.canvas-context {
		inset: 1rem;
		padding: 1rem 1rem 3.8rem;
	}

	.stats-grid,
	.privacy-highlights {
		grid-template-columns: 1fr;
		gap: 0.8rem;
	}

	.site-footer {
		position: relative;
		padding: 1.2rem 1.4rem;
		flex-direction: column;
		gap: 0.6rem;
		text-align: center;
	}
}

/* =========================================================================
   MARK: - 11. COMING SOON (Кнопка App Store до релиза)
   RU: Выглядит как кнопка, но ничего не делает. После релиза убрать класс
       is-soon и вернуть ссылку на App Store (см. комментарии в index.html).
   EN: Looks like a button but does nothing. After release, drop the
       is-soon class and restore the App Store link (see comments in index.html).
   ========================================================================= */
.is-soon {
	opacity: 0.7;
	cursor: default;
	pointer-events: none;
}

/* =========================================================================
   MARK: - 12. HEADER ON TABLETS & PHONES (Шапка на планшетах и телефонах)
   ========================================================================= */

/* RU: Вкладки разделов уходят в бургер-меню уже на ширине ≤ 1100px.
       Раньше порог был 920px, и на 921–1000px вкладки вплотную упирались
       в логотип и кнопки справа.
   EN: Section tabs collapse into the burger menu at ≤ 1100px. The old
       920px breakpoint left the tabs touching the logo and the buttons
       between 921–1000px. */
@media (max-width: 1100px) {
	.site-nav-tabs {
		display: none;
	}

	.hamburger-btn {
		display: inline-flex;
	}
}

/* RU: На ширине iPhone (≤ 640px) шапка не помещалась — кнопка меню выходила
       за экран. «← Portfolio» и кнопка App Store уже есть в выезжающем меню,
       поэтому в самой шапке их прячем.
   EN: On iPhone-width screens (≤ 640px) the header overflowed and the menu
       button was pushed off-screen. "← Portfolio" and the App Store button
       already live in the slide-out menu, so they are hidden in the bar itself. */
@media (max-width: 640px) {
	.portfolio-back-link,
	.header-appstore-btn {
		display: none;
	}
}

/* RU: Подсветка текущего раздела в выезжающем меню.
   EN: Highlight the current section in the slide-out menu. */
.mobile-nav-overlay a.nav-active {
	color: var(--green);
}

/* =========================================================================
   MARK: - 13. FORM STATUS (Статус отправки формы — contact-form.js)
   RU: Строка под кнопкой: «Отправка…», «Сообщение отправлено», ошибка.
   EN: Line under the submit button: sending / sent / error.
   ========================================================================= */
.form-status {
	margin: 0;
	font-size: 0.78rem;
	line-height: 1.5;
}

.form-status:empty {
	display: none;
}

.form-status.is-sending {
	color: var(--text-secondary);
}

.form-status.is-success {
	color: var(--green);
	font-weight: 600;
}

.form-status.is-error {
	color: #ff8a80;
}


/* =========================================================================
   MARK: - 13. LIVE ON APP STORE (Блок «Уже в App Store»)
   RU: Иконка, бейдж и QR-код приложения под шапкой панели Features.
       QR скрыт на телефонах — там достаточно нажать на бейдж.
   EN: App icon, badge and QR code under the Features panel header.
       The QR is hidden on phones, where tapping the badge is enough.
   ========================================================================= */
.live-card {
	display: flex;
	align-items: center;
	gap: 1rem;
	margin: 0 42px 1.2rem; /* RU: выровнено по тексту заголовка. EN: aligned with the header text. */
	padding: 0.9rem 1.1rem;
	background: var(--surface-card);
	border: 1px solid var(--line);
	border-radius: 14px;
}

.live-icon {
	flex-shrink: 0;
	width: 64px;
	height: 64px;
	border-radius: 15px;
}

.live-text {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 0.35rem;
	min-width: 0;
	flex: 1;
}

.live-text strong {
	font-size: 0.95rem;
	color: var(--text);
}

.live-text span {
	font-size: 0.78rem;
	line-height: 1.45;
	color: var(--text-secondary);
}

.live-badge {
	display: inline-flex;
	margin-top: 0.25rem;
	transition: transform 0.25s ease;
}

.live-badge:hover {
	transform: scale(1.04);
}

.live-badge img {
	height: 38px;
	width: auto;
	display: block;
}

.live-qr {
	flex-shrink: 0;
	margin: 0;
	text-align: center;
}

.live-qr img {
	display: block;
	width: 84px;
	height: 84px;
	border-radius: 8px;
}

.live-qr figcaption {
	margin-top: 0.3rem;
	font-family: var(--font-mono);
	font-size: 0.58rem;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--text-secondary);
}

@media (max-width: 640px) {
	.live-qr {
		display: none;
	}

	.live-icon {
		width: 52px;
		height: 52px;
	}
}