/* ============================================
   МОДЕЛЬ 4 — ОДНА СТРАНИЦА, СКРОЛЛ, REVEAL
   Полностью адаптивно под любые телефоны
   ============================================ */

:root {
    --bg: #0f0f0f;
    --surface: #141414;
    --surface2: #1a1a1a;
    --line: #252525;
    --text: #eee;
    --muted: #999;
    --accent: #fff;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

/* ========== PROGRESS BAR ========== */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--accent);
    z-index: 9999;
    width: 0%;
    transition: width 0.1s linear;
}

/* ========== PARTICLES ========== */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.5;
}

/* ========== MENU ========== */
.menu-toggle {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1001;
    background: rgba(17, 17, 17, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(34, 34, 34, 0.5);
    width: 44px;
    height: 44px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 5px;
    cursor: pointer;
    transition: all 0.3s;
}

.menu-toggle:hover {
    background: rgba(17, 17, 17, 0.9);
    border-color: var(--line);
}

.menu-toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--text);
    transition: all 0.3s;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(4px, 4px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(4px, -4px);
}

.menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
}

.menu-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.side-menu {
    position: fixed;
    top: 0;
    left: -300px;
    width: 280px;
    height: 100%;
    background: var(--surface);
    border-right: 1px solid var(--line);
    z-index: 1000;
    padding: 80px 20px 20px;
    transition: left 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    overflow-y: auto;
}

.side-menu.active {
    left: 0;
}

.side-logo {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: 6px;
    margin-bottom: 40px;
    text-align: center;
}

.side-btn {
    display: flex;
    align-items: center;
    gap: 16px;
    width: 100%;
    padding: 16px 20px;
    background: none;
    border: none;
    border-bottom: 1px solid var(--line);
    color: var(--muted);
    font-family: inherit;
    font-size: 0.9rem;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
    text-decoration: none;
}

.side-btn:last-child {
    border-bottom: none;
}

.side-btn:hover {
    color: var(--text);
    background: var(--surface2);
    padding-left: 28px;
}

.side-btn.active {
    color: var(--accent);
    border-left: 2px solid var(--accent);
}

.side-icon {
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

/* ========== MAIN ========== */
.main-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
    border-bottom: 1px solid var(--line);
}

.section:last-of-type {
    border-bottom: none;
}

/* ========== HERO ========== */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    border-bottom: none;
}

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

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    border: 1px solid var(--line);
    font-size: 0.7rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 40px;
    color: var(--muted);
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 20px;
    min-height: 1.2em;
}

.typewriter {
    border-right: 2px solid var(--accent);
}

.cursor {
    animation: blink 0.8s step-end infinite;
}

@keyframes blink {
    50% { opacity: 0; }
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--muted);
    margin-bottom: 30px;
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    border: 1px solid var(--line);
    font-size: 0.9rem;
    letter-spacing: 1px;
    margin-bottom: 40px;
}

.tag-dot {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.hero-free {
    font-size: 0.75rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--muted);
}

.scroll-hint {
    position: absolute;
    bottom: 30px;
    color: var(--muted);
    font-size: 0.75rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    animation: float 2s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(10px); }
}

/* ========== REVEAL ANIMATION ========== */
.reveal {
    opacity: 0;
    transform: translateY(40px) scale(0.97);
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), 
                transform 0.8s cubic-bezier(0.22, 1, 0.36, 1);
}

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

.reveal[data-delay="0.08"] { transition-delay: 0.08s; }
.reveal[data-delay="0.15"] { transition-delay: 0.15s; }
.reveal[data-delay="0.16"] { transition-delay: 0.16s; }
.reveal[data-delay="0.24"] { transition-delay: 0.24s; }
.reveal[data-delay="0.32"] { transition-delay: 0.32s; }

/* ========== SECTION HEADER ========== */
.section-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
}

.section-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--line);
    line-height: 1;
    letter-spacing: -2px;
}

.section-title {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ========== ABOUT GRID ========== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.about-grid.reverse {
    direction: rtl;
}

.about-grid.reverse > * {
    direction: ltr;
}

.about-card {
    background: var(--surface);
    border: 1px solid var(--line);
    padding: 30px;
    position: relative;
}

.card-accent {
    border-left: 3px solid var(--accent);
}

.card-icon {
    font-size: 3rem;
    line-height: 1;
    color: var(--muted);
    margin-bottom: 16px;
    font-family: Georgia, serif;
}

.card-quote {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text);
}

.about-text p {
    margin-bottom: 18px;
}

.highlight {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 1px;
    padding: 16px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
}

/* ========== BENEFITS ========== */
.benefits-stack {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.benefits-label {
    font-size: 0.8rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 4px;
    padding-left: 4px;
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 16px 20px;
    background: var(--surface);
    border: 1px solid var(--line);
    transition: all 0.3s;
}

.benefit-item:hover {
    border-color: var(--accent);
    transform: translateX(5px);
}

.benefit-num {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--muted);
    min-width: 30px;
}

.benefit-item b {
    display: block;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.benefit-item span:last-child {
    font-size: 0.85rem;
    color: var(--muted);
}

/* ========== CTA ========== */
.section-cta {
    text-align: center;
    padding: 40px 0;
    border-top: 1px solid var(--line);
    margin-top: 40px;
}

/* ========== BUTTONS ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.btn-primary {
    background: var(--accent);
    color: var(--bg);
}

.btn-primary:hover {
    opacity: 0.85;
    transform: translateY(-2px);
}

.btn-outline {
    background: none;
    color: var(--accent);
    border: 1px solid var(--accent);
}

.btn-outline:hover {
    background: var(--surface);
    transform: translateY(-2px);
}

.btn-small {
    padding: 10px 20px;
    font-size: 0.75rem;
}

.btn-arrow {
    transition: transform 0.2s;
}

.btn:hover .btn-arrow {
    transform: translateX(4px);
}

/* ========== MANIFESTO ========== */
.manifesto-intro {
    padding: 24px;
    border-left: 3px solid var(--accent);
    margin-bottom: 40px;
    font-size: 1.05rem;
    line-height: 1.7;
}

.manifesto-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.manifesto-item {
    background: var(--surface);
    border: 1px solid var(--line);
    overflow: hidden;
    transition: border-color 0.3s;
}

.manifesto-item[open] {
    border-color: var(--accent);
}

.manifesto-item summary {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    cursor: pointer;
    list-style: none;
    user-select: none;
}

.manifesto-item summary::-webkit-details-marker {
    display: none;
}

.m-num {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--muted);
    min-width: 30px;
}

.m-title {
    flex: 1;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.m-toggle {
    font-size: 1.5rem;
    color: var(--muted);
    transition: transform 0.3s;
    font-weight: 300;
}

.manifesto-item[open] .m-toggle {
    transform: rotate(45deg);
}

.m-body {
    padding: 0 24px 20px 70px;
    border-top: 1px solid var(--line);
    padding-top: 16px;
}

.m-body p {
    color: var(--muted);
    font-size: 0.95rem;
}

.manifesto-closing {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--line);
}

/* ========== REGIONS ========== */
.regions-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin: 30px 0;
}

.region-card {
    background: var(--surface);
    border: 1px solid var(--line);
    padding: 30px;
    text-align: center;
}

.region-lead {
    border-style: dashed;
}

.region-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 16px;
    color: var(--muted);
}

.region-card h3 {
    font-size: 1.1rem;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.region-card p {
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 12px;
}

.region-cities {
    display: flex;
    flex-wrap: wrap;
    align-content: flex-start;
    gap: 10px;
    padding: 20px;
    background: var(--surface);
    border: 1px solid var(--line);
}

.city-chip {
    padding: 8px 16px;
    border: 1px solid var(--line);
    font-size: 0.8rem;
    letter-spacing: 0.5px;
    transition: all 0.2s;
}

.city-chip:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.city-more {
    color: var(--muted);
    font-style: italic;
}

/* ========== CONTACTS ========== */
.contact-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    background: var(--surface);
    border: 1px solid var(--line);
    margin: 24px 0;
    gap: 20px;
}

.contact-label {
    display: block;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.contact-desc {
    font-size: 0.85rem;
    color: var(--muted);
}

.rules-block {
    margin-top: 40px;
}

.block-title {
    font-size: 1rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.rules-steps {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.step {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--surface);
    border: 1px solid var(--line);
    transition: all 0.3s;
}

.step:hover {
    border-color: var(--accent);
    transform: translateX(3px);
}

.step-num {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--accent);
    font-size: 0.8rem;
    font-weight: 700;
    flex-shrink: 0;
}

.step span:last-child {
    font-size: 0.9rem;
}

/* ========== FOOTER ========== */
.site-footer {
    text-align: center;
    padding: 40px 0;
    color: var(--muted);
    font-size: 0.8rem;
    letter-spacing: 1px;
}

/* ========== UTILITY ========== */
.muted {
    color: var(--muted);
    font-size: 0.9rem;
    font-style: italic;
}

p {
    margin-bottom: 18px;
}

/* ============================================
   АДАПТАЦИЯ ПОД ЛЮБЫЕ ТЕЛЕФОНЫ
   ============================================ */
@media (max-width: 700px) {
    .hero-title {
        font-size: 2rem;
    }

    .section {
        padding: 60px 0;
    }

    .section-header {
        margin-bottom: 28px;
    }

    .section-number {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.2rem;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .about-grid.reverse {
        direction: ltr;
    }

    .regions-showcase {
        grid-template-columns: 1fr;
    }

    .rules-steps {
        grid-template-columns: 1fr;
    }

    .contact-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .btn-small {
        width: 100%;
        text-align: center;
    }

    .side-menu {
        width: 240px;
    }

    .m-body {
        padding-left: 24px;
    }

    .benefit-item:hover {
        transform: none;
    }

    .city-chip:hover {
        transform: none;
    }

    .step:hover {
        transform: none;
    }
}

/* Для совсем маленьких экранов (менее 400px) */
@media (max-width: 400px) {
    .main-content {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 1.6rem;
    }

    .hero-badge {
        font-size: 0.6rem;
        padding: 6px 14px;
    }

    .hero-tag {
        padding: 10px 16px;
        font-size: 0.8rem;
    }

    .btn {
        padding: 12px 20px;
        font-size: 0.75rem;
        width: 100%;
    }

    .btn-outline {
        width: 100%;
    }

    .about-card {
        padding: 20px;
    }

    .card-icon {
        font-size: 2rem;
    }

    .benefit-item {
        padding: 12px 16px;
    }

    .manifesto-item summary {
        padding: 16px 18px;
    }

    .m-body {
        padding: 12px 18px 16px 18px;
    }

    .region-card {
        padding: 20px;
    }

    .contact-card {
        padding: 18px;
    }

    .step {
        padding: 12px;
    }

    .menu-toggle {
        width: 38px;
        height: 38px;
        top: 12px;
        left: 12px;
        background: rgba(17, 17, 17, 0.5);
        backdrop-filter: blur(6px);
        -webkit-backdrop-filter: blur(6px);
    }

    .menu-toggle span {
        width: 16px;
    }

    .side-menu {
        width: 200px;
    }
}