:root {
    --tomchat-bg: #f4f8ff;
    --tomchat-panel: rgba(255, 255, 255, 0.9);
    --tomchat-panel-strong: #ffffff;
    --tomchat-line: rgba(15, 23, 42, 0.08);
    --tomchat-ink: #101827;
    --tomchat-muted: #64748b;
    --tomchat-brand: #e60012;
    --tomchat-brand-dark: #b40010;
    --tomchat-accent: #0284c7;
    --tomchat-accent-soft: rgba(2, 132, 199, 0.12);
    --tomchat-shadow: 0 28px 60px rgba(15, 23, 42, 0.12);
    --tomchat-radius-lg: 28px;
    --tomchat-radius-md: 20px;
    --tomchat-radius-sm: 14px;
    --tomchat-safe-bottom: max(18px, env(safe-area-inset-bottom));
}

* {
    box-sizing: border-box;
}

html {
    background: var(--tomchat-bg);
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--tomchat-ink);
    background:
        radial-gradient(circle at top left, rgba(230, 0, 18, 0.12), transparent 30%),
        radial-gradient(circle at top right, rgba(14, 165, 233, 0.16), transparent 28%),
        linear-gradient(180deg, #f8fbff 0%, #eef6ff 48%, #f7f8fb 100%);
    font-family: "Plus Jakarta Sans", "Segoe UI", sans-serif;
}

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

button,
input,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.tomchat-page-glow {
    position: fixed;
    width: 42vw;
    height: 42vw;
    border-radius: 999px;
    filter: blur(70px);
    opacity: 0.45;
    pointer-events: none;
    z-index: 0;
}

.tomchat-page-glow-a {
    top: -8vw;
    left: -10vw;
    background: rgba(230, 0, 18, 0.16);
}

.tomchat-page-glow-b {
    right: -10vw;
    bottom: -12vw;
    background: rgba(15, 138, 138, 0.18);
}

.landing-shell,
.tomchat-page-frame,
.offline-shell {
    position: relative;
    z-index: 1;
}

.landing-shell {
    padding: 32px;
}

.landing-hero {
    display: grid;
    gap: 28px;
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    min-height: calc(100vh - 64px);
}

.landing-copy h1,
.landing-feature-card h2,
.landing-quote p,
.sidepanel-card h2,
.thread-empty h2,
.offline-card h1,
.tomchat-sidebar-top h1 {
    font-family: "Space Grotesk", "Plus Jakarta Sans", sans-serif;
}

.landing-kicker,
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.65);
    color: var(--tomchat-brand-dark);
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.landing-copy h1 {
    margin: 18px 0 16px;
    font-size: clamp(2.5rem, 4.4vw, 4.8rem);
    line-height: 0.96;
    letter-spacing: -0.04em;
}

.landing-copy p,
.landing-feature-card p,
.landing-quote p,
.offline-card p,
.thread-empty p,
.sidepanel-card p {
    color: var(--tomchat-muted);
    line-height: 1.7;
    font-size: 1rem;
}

.landing-actions,
.sidepanel-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 28px;
}

.tomchat-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 46px;
    padding: 0 18px;
    border: 1px solid transparent;
    border-radius: 999px;
    font-weight: 700;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.tomchat-button:hover {
    transform: translateY(-1px);
}

.tomchat-button.brand {
    color: #fff;
    background: linear-gradient(135deg, var(--tomchat-brand) 0%, #f43f5e 100%);
    box-shadow: 0 18px 30px rgba(230, 0, 18, 0.2);
}

.tomchat-button.ghost,
.tomchat-button.soft {
    border-color: var(--tomchat-line);
    background: rgba(255, 255, 255, 0.72);
}

.tomchat-button.full {
    width: 100%;
}

.landing-stats,
.landing-grid {
    display: grid;
    gap: 18px;
}

.landing-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    margin-top: 28px;
}

.landing-stats article,
.landing-feature-card,
.offline-card,
.sidepanel-card {
    border: 1px solid rgba(255, 255, 255, 0.55);
    background: var(--tomchat-panel);
    backdrop-filter: blur(18px);
    box-shadow: var(--tomchat-shadow);
}

.landing-stats article {
    display: grid;
    gap: 8px;
    padding: 22px;
    border-radius: var(--tomchat-radius-md);
}

.landing-stats strong {
    font-size: 1.8rem;
    line-height: 1;
}

.landing-stats span {
    color: var(--tomchat-muted);
}

.landing-visual {
    position: relative;
    display: grid;
    justify-items: center;
}

.landing-note {
    position: absolute;
    top: 8%;
    right: 0;
    display: grid;
    gap: 4px;
    padding: 14px 16px;
    border-radius: var(--tomchat-radius-sm);
    background: rgba(255, 255, 255, 0.8);
    box-shadow: var(--tomchat-shadow);
}

.landing-note span {
    color: var(--tomchat-muted);
    font-size: 0.85rem;
}

.landing-device {
    width: min(100%, 420px);
    padding: 18px;
    border-radius: 34px;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.96), rgba(30, 41, 59, 0.94));
    color: #fff;
    box-shadow: 0 30px 70px rgba(15, 23, 42, 0.24);
    transform: rotate(2deg);
}

.landing-device-bar {
    display: flex;
    gap: 6px;
    margin-bottom: 14px;
}

.landing-device-bar span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.28);
}

.landing-device-header,
.landing-device-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.landing-device-header p,
.landing-device-footer span {
    margin: 0;
    color: rgba(255, 255, 255, 0.65);
    font-size: 0.82rem;
}

.landing-device-header strong {
    font-size: 1.05rem;
}

.landing-device-header span {
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(113, 227, 171, 0.18);
    color: #9ef0be;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.landing-device-chat {
    display: grid;
    gap: 12px;
    padding: 18px 0;
}

.landing-bubble {
    max-width: 88%;
    padding: 14px 16px;
    border-radius: 20px;
}

.landing-bubble strong {
    display: block;
    margin-bottom: 6px;
    font-size: 0.82rem;
}

.landing-bubble p {
    margin: 0;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.88);
}

.landing-bubble.incoming {
    background: rgba(255, 255, 255, 0.11);
}

.landing-bubble.outgoing {
    margin-left: auto;
    background: linear-gradient(135deg, rgba(230, 0, 18, 0.92), rgba(244, 63, 94, 0.96));
}

.landing-device-footer {
    padding-top: 10px;
}

.landing-device-footer button {
    border: 0;
    padding: 10px 16px;
    border-radius: 999px;
    color: #fff;
    background: rgba(255, 255, 255, 0.16);
}

.landing-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 40px;
}

.landing-feature-card,
.offline-card,
.sidepanel-card {
    padding: 26px;
    border-radius: var(--tomchat-radius-lg);
}

.landing-feature-card span:first-child {
    display: inline-flex;
    margin-bottom: 18px;
    color: var(--tomchat-brand-dark);
    font-weight: 800;
}

.landing-feature-card h2 {
    margin: 0 0 12px;
    font-size: 1.38rem;
}

.landing-quote {
    max-width: 820px;
    margin: 34px auto 0;
    text-align: center;
}

.landing-quote p {
    margin: 0;
    font-size: 1.15rem;
}

.tomchat-page-frame {
    padding: 18px;
}

.tomchat-app-shell {
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr) 300px;
    gap: 18px;
    min-height: calc(100dvh - 36px);
}

.tomchat-sidebar,
.tomchat-thread,
.tomchat-sidepanel {
    border: 1px solid rgba(255, 255, 255, 0.56);
    background: var(--tomchat-panel);
    backdrop-filter: blur(18px);
    box-shadow: var(--tomchat-shadow);
    border-radius: 28px;
}

.tomchat-sidebar,
.tomchat-sidepanel {
    padding: 18px;
}

.tomchat-sidebar {
    display: grid;
    gap: 18px;
    align-content: start;
    overflow: hidden;
}

.tomchat-sidebar-top,
.section-head,
.thread-header,
.conversation-card-topline,
.message-meta,
.composer-actions,
.sidepanel-stats div {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.tomchat-sidebar-top h1 {
    margin: 8px 0 0;
    font-size: 1.8rem;
}

.status-pill {
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(230, 0, 18, 0.1);
    color: var(--tomchat-brand-dark);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
}

.tomchat-profile-strip,
.contact-card,
.conversation-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 12px;
    align-items: center;
}

.tomchat-profile-strip {
    padding: 14px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.68);
}

.tomchat-profile-strip img,
.conversation-card img,
.contact-card img,
.thread-header-main img,
.message-row img {
    width: 46px;
    height: 46px;
    border-radius: 16px;
    object-fit: cover;
    background: #fff;
}

.tomchat-profile-strip strong,
.conversation-card strong,
.contact-card strong,
.thread-header-main strong,
.message-meta strong {
    font-size: 0.98rem;
}

.tomchat-profile-strip span,
.conversation-card p,
.contact-card span,
.thread-header-main span,
.message-meta time,
.section-head span,
.composer-actions p,
.sidepanel-stats dt {
    color: var(--tomchat-muted);
    font-size: 0.9rem;
}

.tomchat-search {
    display: grid;
    gap: 10px;
}

.tomchat-search span {
    font-size: 0.88rem;
    font-weight: 700;
}

.tomchat-search input,
.composer-field textarea {
    width: 100%;
    border: 1px solid var(--tomchat-line);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.86);
    color: var(--tomchat-ink);
    outline: 0;
}

.tomchat-search input {
    min-height: 48px;
    padding: 0 16px;
}

.conversation-list,
.contact-list {
    display: grid;
    gap: 10px;
}

.conversation-card,
.contact-card {
    width: 100%;
    padding: 12px;
    border: 1px solid transparent;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.58);
    text-align: left;
}

.conversation-card.is-active {
    border-color: rgba(230, 0, 18, 0.3);
    background: rgba(255, 255, 255, 0.9);
}

.conversation-card-body,
.contact-card-body {
    display: grid;
    gap: 5px;
}

.conversation-card p,
.contact-card span {
    margin: 0;
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 999px;
    background: var(--tomchat-brand);
    box-shadow: 0 0 0 6px rgba(230, 0, 18, 0.12);
}

.contact-card-cta {
    color: var(--tomchat-accent);
    font-size: 0.88rem;
    font-weight: 700;
}

.empty-state-card {
    padding: 16px;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.62);
}

.empty-state-card strong {
    display: block;
    margin-bottom: 6px;
}

.empty-state-card p {
    margin: 0;
    color: var(--tomchat-muted);
    line-height: 1.6;
}

.tomchat-thread {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr) auto;
    overflow: hidden;
}

.thread-header,
.thread-composer {
    padding: 18px 22px;
}

.thread-header {
    border-bottom: 1px solid var(--tomchat-line);
}

.thread-header-main {
    display: flex;
    align-items: center;
    gap: 14px;
}

.thread-title-only {
    display: grid;
    gap: 4px;
}

.thread-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.thread-messages {
    padding: 20px 22px;
    overflow-y: auto;
    display: grid;
    gap: 14px;
}

.thread-messages.is-empty {
    display: flex;
    align-items: center;
    justify-content: center;
}

.thread-empty-card {
    width: min(460px, 100%);
    flex: 0 0 auto;
    padding: 24px;
    border: 1px solid rgba(255, 255, 255, 0.58);
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.68);
    box-shadow: 0 18px 36px rgba(40, 29, 18, 0.08);
}

.thread-empty-card h2 {
    margin: 14px 0 10px;
    font-family: "Space Grotesk", "Plus Jakarta Sans", sans-serif;
    font-size: 1.55rem;
}

.thread-empty-card p {
    margin: 0;
    color: var(--tomchat-muted);
    line-height: 1.7;
}

.message-row {
    display: flex;
    align-items: flex-end;
    gap: 10px;
}

.message-row.is-mine {
    justify-content: flex-end;
}

.message-bubble {
    max-width: min(640px, 88%);
    padding: 14px 16px;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 12px 24px rgba(40, 29, 18, 0.08);
}

.message-row.is-mine .message-bubble {
    color: #fff;
    background: linear-gradient(135deg, var(--tomchat-brand) 0%, #f43f5e 100%);
}

.message-row.is-mine .message-meta time,
.message-row.is-mine .message-bubble p {
    color: rgba(255, 255, 255, 0.9);
}

.message-row.is-mine .message-meta strong {
    color: #fff;
}

.message-bubble p {
    margin: 8px 0 0;
    line-height: 1.7;
    color: #41382f;
    white-space: pre-wrap;
}

.thread-composer {
    display: grid;
    gap: 10px;
    border-top: 1px solid var(--tomchat-line);
    background: rgba(255, 255, 255, 0.55);
}

.composer-field textarea {
    min-height: 94px;
    padding: 16px;
    resize: vertical;
}

.composer-error {
    margin: 0;
    color: #c23a24;
    font-size: 0.88rem;
}

.thread-empty {
    display: grid;
    align-content: center;
    justify-items: start;
    gap: 12px;
    padding: 28px;
}

.thread-empty h2 {
    margin: 0;
    font-size: 2rem;
}

.tomchat-sidepanel {
    display: grid;
    gap: 18px;
    align-content: start;
    padding: 18px;
}

.sidepanel-card h2 {
    margin: 10px 0 12px;
    font-size: 1.4rem;
}

.sidepanel-stats {
    display: grid;
    gap: 14px;
    margin: 0;
}

.sidepanel-stats dd {
    margin: 0;
    font-size: 1.3rem;
    font-weight: 800;
}

.icon-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--tomchat-line);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.7);
}

.mobile-only {
    display: none;
}

.offline-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 28px;
}

.offline-card {
    width: min(560px, 100%);
}

.tomchat-install-fab {
    position: fixed;
    right: 20px;
    bottom: calc(var(--tomchat-safe-bottom) + 12px);
    z-index: 30;
    border: 0;
    padding: 14px 18px;
    border-radius: 999px;
    color: #fff;
    background: linear-gradient(135deg, var(--tomchat-brand) 0%, #f43f5e 100%);
    box-shadow: 0 18px 32px rgba(230, 0, 18, 0.22);
}

.is-hidden {
    display: none !important;
}

@media (max-width: 1279px) {
    .tomchat-app-shell {
        grid-template-columns: 330px minmax(0, 1fr);
    }

    .tomchat-sidepanel {
        display: none;
    }
}

@media (max-width: 1023px) {
    .landing-hero,
    .landing-grid,
    .tomchat-app-shell {
        grid-template-columns: 1fr;
    }

    .landing-device {
        transform: none;
    }

    .thread-actions {
        display: none;
    }

    .mobile-only {
        display: inline-flex;
    }

    .tomchat-sidebar {
        min-height: calc(100dvh - 36px);
    }

    .tomchat-sidebar.is-collapsed-mobile {
        display: none;
    }

    .tomchat-thread {
        min-height: calc(100dvh - 36px);
    }
}

@media (max-width: 767px) {
    .landing-shell,
    .tomchat-page-frame {
        padding: 14px;
    }

    .landing-copy h1 {
        font-size: 2.4rem;
    }

    .landing-stats {
        grid-template-columns: 1fr;
    }

    .tomchat-thread,
    .tomchat-sidebar,
    .tomchat-sidepanel,
    .landing-feature-card,
    .offline-card,
    .sidepanel-card {
        border-radius: 24px;
    }

    .thread-header,
    .thread-composer,
    .thread-messages {
        padding-left: 16px;
        padding-right: 16px;
    }

    .message-bubble {
        max-width: 92%;
    }
}