/* Twin messenger landing — twinty.ru/messenger */

:root {
    --twin-bg: #0c0e13;
    --twin-bg-2: #12151c;
    --twin-surface: #171a21;
    --twin-elevated: #22262f;
    --twin-text: #f4f5f7;
    --twin-muted: #8b93a7;
    --twin-line: #2a2f3a;
    --twin-blue: #3d8bff;
    --twin-blue-deep: #2b6fd6;
    --twin-bubble-out: #1f4f9a;
    --twin-bubble-in: #1c212b;
    --twin-online: #2ee59d;
    --twin-font: "Outfit", system-ui, sans-serif;
    --twin-display: "Syne", "Outfit", system-ui, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body.twin-land {
    margin: 0;
    min-height: 100vh;
    font-family: var(--twin-font);
    color: var(--twin-text);
    background: var(--twin-bg);
    line-height: 1.5;
    overflow-x: hidden;
}

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

.twin-atmosphere {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    background:
        radial-gradient(ellipse 90% 55% at 12% -10%, rgba(61, 139, 255, 0.28), transparent 55%),
        radial-gradient(ellipse 70% 45% at 95% 8%, rgba(46, 229, 157, 0.08), transparent 50%),
        radial-gradient(ellipse 60% 40% at 70% 100%, rgba(61, 139, 255, 0.12), transparent 55%),
        linear-gradient(180deg, #0c0e13 0%, #10131a 45%, #0c0e13 100%);
}

.twin-atmosphere::after {
    content: "";
    position: absolute;
    inset: 0;
    opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Nav */
.twin-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1120px;
    margin: 0 auto;
    padding: 22px 24px 0;
}

.twin-nav-brand {
    font-family: var(--twin-display);
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: -0.04em;
}

.twin-nav-links {
    display: flex;
    align-items: center;
    gap: 8px 20px;
}

.twin-nav-links a {
    color: var(--twin-muted);
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

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

.twin-nav-cta {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: 999px;
    background: rgba(61, 139, 255, 0.16);
    color: var(--twin-blue) !important;
}

/* Hero — one composition */
.twin-hero {
    max-width: 1120px;
    margin: 0 auto;
    padding: 48px 24px 72px;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 40px 48px;
    align-items: center;
    min-height: calc(100vh - 88px);
}

.twin-brand {
    margin: 0 0 10px;
    font-family: var(--twin-display);
    font-weight: 800;
    font-size: clamp(3.4rem, 8vw, 5.6rem);
    line-height: 0.92;
    letter-spacing: -0.06em;
    background: linear-gradient(120deg, #ffffff 10%, #9ec4ff 55%, #3d8bff 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: twinRise 0.8s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.twin-brand-sm {
    font-size: clamp(2rem, 4vw, 2.6rem);
    margin-bottom: 8px;
}

.twin-headline {
    margin: 0 0 16px;
    font-family: var(--twin-font);
    font-weight: 600;
    font-size: clamp(1.35rem, 2.4vw, 1.75rem);
    line-height: 1.25;
    letter-spacing: -0.03em;
    color: var(--twin-text);
    max-width: 18ch;
    animation: twinRise 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.08s both;
}

.twin-lead {
    margin: 0 0 28px;
    max-width: 34ch;
    color: var(--twin-muted);
    font-size: 1.05rem;
    animation: twinRise 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.14s both;
}

.twin-cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    animation: twinRise 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.2s both;
}

.twin-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 48px;
    padding: 0 22px;
    border-radius: 14px;
    font-weight: 600;
    font-size: 0.98rem;
    border: 1px solid transparent;
    transition: transform 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}

.twin-btn-primary {
    background: linear-gradient(180deg, #4b96ff 0%, var(--twin-blue) 100%);
    color: #fff;
    box-shadow: 0 12px 32px rgba(61, 139, 255, 0.28);
}

.twin-btn-primary:hover {
    transform: translateY(-1px);
    background: linear-gradient(180deg, #5aa0ff 0%, var(--twin-blue-deep) 100%);
}

.twin-btn-ghost {
    background: transparent;
    border-color: var(--twin-line);
    color: var(--twin-text);
}

.twin-btn-ghost:hover {
    border-color: #3d4658;
    background: rgba(255, 255, 255, 0.03);
}

.twin-btn-disabled {
    opacity: 0.55;
    cursor: not-allowed;
    box-shadow: none;
}

.twin-meta {
    margin: 16px 0 0;
    color: var(--twin-muted);
    font-size: 0.86rem;
    animation: twinRise 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.26s both;
}

/* Phone stage — full visual plane */
.twin-hero-stage {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 560px;
    animation: twinFloatIn 1s cubic-bezier(0.22, 1, 0.36, 1) 0.18s both;
}

.twin-hero-stage::before {
    content: "";
    position: absolute;
    width: min(100%, 420px);
    height: min(100%, 520px);
    border-radius: 50%;
    background: radial-gradient(circle, rgba(61, 139, 255, 0.22), transparent 68%);
    filter: blur(8px);
}

.twin-phone {
    position: relative;
    width: min(100%, 300px);
    aspect-ratio: 9 / 19.2;
    border-radius: 36px;
    padding: 10px;
    background: linear-gradient(160deg, #2a303c, #12151c 40%, #0a0c10);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow:
        0 40px 80px rgba(0, 0, 0, 0.45),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    animation: twinPhoneFloat 6s ease-in-out infinite;
}

.twin-phone-notch {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    width: 88px;
    height: 18px;
    border-radius: 999px;
    background: #0a0c10;
    z-index: 2;
}

.twin-phone-screen {
    height: 100%;
    border-radius: 28px;
    overflow: hidden;
    background:
        linear-gradient(180deg, rgba(61, 139, 255, 0.08), transparent 28%),
        #0f1115;
    display: flex;
    flex-direction: column;
}

.twin-chat-top {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 34px 16px 12px;
    border-bottom: 1px solid rgba(42, 47, 58, 0.8);
}

.twin-chat-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #5b8def, #3d8bff);
    font-weight: 700;
    font-size: 0.85rem;
}

.twin-chat-name {
    font-weight: 600;
    font-size: 0.92rem;
}

.twin-chat-status {
    color: var(--twin-online);
    font-size: 0.72rem;
}

.twin-bubbles {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    justify-content: flex-end;
}

.twin-bubble {
    max-width: 86%;
    padding: 10px 12px;
    border-radius: 16px;
    font-size: 0.78rem;
    line-height: 1.35;
    opacity: 0;
    animation: twinBubbleIn 0.55s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

.twin-bubble-in {
    align-self: flex-start;
    background: var(--twin-bubble-in);
    border-bottom-left-radius: 6px;
}

.twin-bubble-out {
    align-self: flex-end;
    background: var(--twin-bubble-out);
    border-bottom-right-radius: 6px;
}

.twin-bubble-delay-1 { animation-delay: 0.55s; }
.twin-bubble-delay-2 { animation-delay: 0.85s; }
.twin-bubble-delay-3 { animation-delay: 1.15s; }
.twin-bubble-delay-4 { animation-delay: 1.45s; }

.twin-composer {
    margin: 8px 10px 12px;
    padding: 10px 12px;
    border-radius: 18px;
    background: var(--twin-elevated);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--twin-muted);
    font-size: 0.78rem;
}

.twin-composer-send {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--twin-blue);
    color: #fff;
    font-weight: 700;
}

/* Sections — one job each */
.twin-section {
    max-width: 1120px;
    margin: 0 auto;
    padding: 56px 24px;
}

.twin-section-speed {
    border-top: 1px solid var(--twin-line);
}

.twin-section-inner {
    max-width: 640px;
}

.twin-section h2 {
    margin: 0 0 12px;
    font-size: clamp(1.6rem, 3vw, 2.1rem);
    letter-spacing: -0.04em;
    font-weight: 700;
}

.twin-section-inner p,
.twin-feature p {
    margin: 0;
    color: var(--twin-muted);
    font-size: 1.05rem;
}

.twin-section-features {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px 32px;
    border-top: 1px solid var(--twin-line);
}

.twin-feature h3 {
    margin: 0 0 8px;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
}

.twin-btn-compact {
    min-height: 42px;
    padding: 0 16px;
    font-size: 0.9rem;
    width: auto;
}

.twin-section-inner--wide {
    max-width: 720px;
    margin-bottom: 28px;
}

.twin-section-lead {
    margin: 0;
    color: var(--twin-muted);
    font-size: 1.05rem;
}

.twin-section-steps,
.twin-section-stores,
.twin-section-sync {
    border-top: 1px solid var(--twin-line);
}

.twin-steps {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 18px;
}

.twin-step {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 16px;
    align-items: start;
}

.twin-step-num {
    width: 36px;
    height: 36px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    font-weight: 700;
    font-size: 0.95rem;
    color: #fff;
    background: linear-gradient(180deg, #4b96ff, var(--twin-blue));
}

.twin-step h3 {
    margin: 2px 0 6px;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

.twin-step p {
    margin: 0;
    color: var(--twin-muted);
    font-size: 0.98rem;
}

.twin-stores {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.twin-store {
    padding: 22px 20px;
    border-radius: 20px;
    border: 1px solid var(--twin-line);
    background: rgba(23, 26, 33, 0.72);
    min-height: 100%;
}

.twin-store--live {
    border-color: rgba(61, 139, 255, 0.35);
    background:
        radial-gradient(ellipse 90% 80% at 0% 0%, rgba(61, 139, 255, 0.16), transparent 60%),
        rgba(23, 26, 33, 0.9);
}

.twin-store--soon {
    opacity: 0.88;
}

.twin-store-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 14px;
}

.twin-store-mark {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    display: grid;
    place-items: center;
    background: var(--twin-elevated);
    color: var(--twin-text);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.04em;
}

.twin-store-mark--apk {
    background: linear-gradient(145deg, #4b96ff, #2b6fd6);
    color: #fff;
}

.twin-store-mark--rustore {
    padding: 0;
    overflow: hidden;
    background: transparent;
    border: 0;
}

.twin-store-mark--rustore svg {
    width: 42px;
    height: 42px;
    display: block;
}

.twin-store-mark--huawei {
    background: #cf0a2c;
    border: 0;
    color: #fff;
}

.twin-store-mark--huawei svg {
    width: 24px;
    height: 24px;
    display: block;
}

.twin-store-badge {
    display: inline-flex;
    align-items: center;
    min-height: 26px;
    padding: 0 10px;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--twin-muted);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--twin-line);
}

.twin-store-badge--on {
    color: #0c0e13;
    background: var(--twin-online);
    border-color: transparent;
}

.twin-store h3 {
    margin: 0 0 8px;
    font-size: 1.1rem;
    letter-spacing: -0.02em;
}

.twin-store p {
    margin: 0 0 16px;
    color: var(--twin-muted);
    font-size: 0.95rem;
    line-height: 1.45;
}

.twin-store-soon-label {
    display: inline-block;
    color: #5c6478;
    font-size: 0.88rem;
    font-weight: 600;
}

.twin-sync {
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 28px;
    align-items: center;
    padding: 32px 28px;
    border-radius: 24px;
    border: 1px solid var(--twin-line);
    background:
        radial-gradient(ellipse 70% 100% at 100% 50%, rgba(61, 139, 255, 0.12), transparent 55%),
        var(--twin-surface);
}

.twin-sync h2 {
    margin: 0 0 10px;
}

.twin-sync p {
    margin: 0;
    color: var(--twin-muted);
    font-size: 1.05rem;
    max-width: 42ch;
}

.twin-sync-rail {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    font-family: var(--twin-display);
    font-weight: 800;
    font-size: 1.35rem;
    letter-spacing: -0.04em;
}

.twin-sync-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--twin-blue);
    box-shadow: 0 0 0 6px rgba(61, 139, 255, 0.18);
    animation: twinPulse 2.4s ease-in-out infinite;
}

@keyframes twinPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.15); opacity: 0.75; }
}

.twin-section-download {
    padding-bottom: 88px;
}

.twin-download-panel {
    border-radius: 28px;
    padding: 40px 36px;
    background:
        radial-gradient(ellipse 80% 80% at 0% 0%, rgba(61, 139, 255, 0.18), transparent 55%),
        var(--twin-surface);
    border: 1px solid var(--twin-line);
    text-align: left;
}

.twin-download-panel h2 {
    margin: 0 0 8px;
}

.twin-download-panel > p {
    margin: 0 0 22px;
    color: var(--twin-muted);
    max-width: 42ch;
}

.twin-download-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.twin-hint {
    margin: 18px 0 0 !important;
    font-size: 0.88rem !important;
    max-width: 52ch;
}

/* Footer */
.twin-foot {
    border-top: 1px solid var(--twin-line);
    max-width: 1120px;
    margin: 0 auto;
    padding: 28px 24px 40px;
    display: grid;
    gap: 14px;
}

.twin-foot-brand {
    font-family: var(--twin-display);
    font-weight: 800;
    letter-spacing: -0.04em;
}

.twin-foot-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
}

.twin-foot-links a {
    color: var(--twin-muted);
    font-size: 0.9rem;
}

.twin-foot-links a:hover {
    color: var(--twin-text);
}

.twin-foot-copy {
    margin: 0;
    color: #5c6478;
    font-size: 0.82rem;
}

@keyframes twinRise {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes twinFloatIn {
    from {
        opacity: 0;
        transform: translateY(28px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

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

@keyframes twinBubbleIn {
    from {
        opacity: 0;
        transform: translateY(10px) scale(0.96);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@media (max-width: 900px) {
    .twin-hero {
        grid-template-columns: 1fr;
        min-height: auto;
        padding-top: 36px;
        gap: 28px;
    }

    .twin-headline {
        max-width: none;
    }

    .twin-lead {
        max-width: 40ch;
    }

    .twin-hero-stage {
        min-height: 480px;
        order: -1;
    }

    .twin-phone {
        width: min(100%, 260px);
    }

    .twin-section-features {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .twin-stores {
        grid-template-columns: 1fr;
    }

    .twin-sync {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .twin-sync-rail {
        justify-content: flex-start;
    }
}

@media (max-width: 560px) {
    .twin-nav {
        padding-inline: 18px;
    }

    .twin-hero,
    .twin-section,
    .twin-foot {
        padding-inline: 18px;
    }

    .twin-download-panel {
        padding: 28px 20px;
    }

    .twin-cta-row {
        flex-direction: column;
    }

    .twin-btn {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
    }
}