@media (display-mode: standalone) {
    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }
}

:root {
    --bg-app: #f0f2f5;
    --bg-panel: #ffffff;
    --bg-chat: #e5ddd5;
    --bg-inbound: #ffffff;
    --bg-outbound: #d9fdd3;
    --bg-hover: #f5f6f6;
    --border: #e9edef;
    --text: #111b21;
    --text-secondary: #667781;
    --accent: #008069;
    --accent-hover: #006c58;
    --accent-light: #e7fce3;
    --danger: #ea0038;
    --info: #53bdeb;
    --shadow: 0 1px 3px rgba(11, 20, 26, 0.08);
    --radius: 8px;
    --radius-bubble: 7.5px;
    --header-h: 60px;
    --composer-h: 62px;
    --list-w: 390px;
    --safe-bottom: env(safe-area-inset-bottom, 0px);
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
    background: var(--bg-app);
    color: var(--text);
    -webkit-font-smoothing: antialiased;
}

button,
input,
textarea {
    font: inherit;
}

.hidden {
    display: none !important;
}

.noscript-banner {
    padding: 16px;
    background: #fff3cd;
    color: #664d03;
    text-align: center;
    border-bottom: 1px solid #ffecb5;
}

body.boot-fallback #app {
    display: none !important;
}

body.boot-fallback #auth-screen {
    display: flex !important;
}

/* Auth */
.auth-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: linear-gradient(160deg, #d9fdd3 0%, var(--bg-app) 45%);
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--bg-panel);
    border-radius: 16px;
    padding: 32px 28px;
    box-shadow: var(--shadow);
}

.auth-card h1 {
    margin: 16px 0 8px;
    font-size: 1.35rem;
}

.auth-card p {
    color: var(--text-secondary);
    margin: 0 0 20px;
}

.auth-card input {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg-panel);
    margin-bottom: 12px;
}

.auth-card button {
    width: 100%;
    border: none;
    border-radius: var(--radius);
    padding: 12px;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
}

.auth-card button:hover {
    background: var(--accent-hover);
}

.auth-card .btn-secondary {
    margin-top: 8px;
    background: var(--surface-2, #f0f2f5);
    color: var(--text, #111b21);
}

.auth-card .btn-secondary:hover {
    background: var(--border, #e9edef);
}

.auth-error {
    color: var(--danger);
    font-size: 0.9rem;
    min-height: 1.2em;
    margin-top: 8px;
}

/* Brand mark */
.brand-mark {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: grid;
    place-items: center;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.brand-mark.sm {
    width: 40px;
    height: 40px;
    font-size: 0.85rem;
}

.brand-mark.xl {
    width: 80px;
    height: 80px;
    font-size: 1.4rem;
    margin: 0 auto 16px;
}

/* Shell layout */
.app {
    height: 100vh;
    height: 100dvh;
}

.shell {
    display: grid;
    grid-template-columns: var(--list-w) 1fr;
    height: 100%;
    background: var(--bg-panel);
    max-width: 1600px;
    margin: 0 auto;
    box-shadow: var(--shadow);
}

.view {
    min-height: 0;
    display: flex;
    flex-direction: column;
    background: var(--bg-panel);
}

/* Chat list */
.view-list {
    border-right: 1px solid var(--border);
}

.list-header {
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    padding: 10px 16px 12px;
}

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

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.brand-title {
    margin: 0;
    font-size: 1.05rem;
}

.operator-badge {
    margin: 2px 0 0;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.list-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logout-btn {
    border: 1px solid var(--border);
    background: var(--bg-app);
    color: var(--text-secondary);
    border-radius: var(--radius);
    padding: 6px 10px;
    font-size: 0.8rem;
    cursor: pointer;
}

.logout-btn:hover {
    color: var(--text);
    background: var(--surface-2, #f0f2f5);
}

.ws-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--danger);
    flex-shrink: 0;
}

.ws-dot.connected {
    background: #25d366;
}

.ws-dot.reconnecting {
    background: #f5a623;
}

.list-search input {
    width: 100%;
    padding: 10px 14px;
    border: none;
    border-radius: var(--radius);
    background: var(--bg-app);
    color: var(--text);
}

.chat-list {
    list-style: none;
    margin: 0;
    padding: 0;
    overflow-y: auto;
    flex: 1;
}

.chat-item {
    display: flex;
    align-items: center;
    gap: 14px;
    width: 100%;
    padding: 12px 16px;
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    border-bottom: 1px solid var(--border);
}

.chat-item:hover {
    background: var(--bg-hover);
}

.chat-item.active {
    background: #f0f2f5;
}

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #dfe5e7, #c5ced3);
    color: var(--text);
    display: grid;
    place-items: center;
    font-weight: 600;
    font-size: 0.95rem;
    flex-shrink: 0;
}

.avatar.lg {
    width: 96px;
    height: 96px;
    font-size: 1.6rem;
    margin: 0 auto;
}

.chat-item-body {
    flex: 1;
    min-width: 0;
}

.chat-item-top {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 4px;
}

.chat-item-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-item-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.chat-item-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.chat-item-preview {
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.unread-badge {
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 999px;
    background: var(--accent);
    color: #fff;
    font-size: 0.72rem;
    font-weight: 600;
    display: grid;
    place-items: center;
    flex-shrink: 0;
}

.list-empty {
    padding: 32px 16px;
    text-align: center;
    color: var(--text-secondary);
}

/* Chat view */
.view-chat {
    position: relative;
    background: var(--bg-chat);
}

.chat-header {
    height: var(--header-h);
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-panel);
    border-bottom: 1px solid var(--border);
}

.icon-btn {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: transparent;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-secondary);
    flex-shrink: 0;
}

.icon-btn:hover {
    background: var(--bg-hover);
}

.chat-header-contact {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
    border: none;
    background: transparent;
    text-align: left;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius);
}

.chat-header-contact:hover {
    background: var(--bg-hover);
}

.chat-header-text {
    min-width: 0;
}

.chat-header-text h2 {
    margin: 0;
    font-size: 1rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.meta {
    margin: 2px 0 0;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.lang-chip {
    font-size: 0.72rem;
    padding: 4px 8px;
    border-radius: 999px;
    background: var(--bg-app);
    color: var(--text-secondary);
}

.chat-header-actions {
    flex-shrink: 0;
}

.message-feed {
    flex: 1;
    overflow-y: auto;
    padding: 16px 6%;
    display: flex;
    flex-direction: column;
    gap: 4px;
    background:
        url("data:image/svg+xml,%3Csvg width='60' height='60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23d1c9c0' fill-opacity='0.25'%3E%3Ccircle cx='4' cy='4' r='1'/%3E%3C/g%3E%3C/svg%3E"),
        var(--bg-chat);
}

.msg-row {
    display: flex;
    margin-bottom: 2px;
}

.msg-row.inbound {
    justify-content: flex-start;
}

.msg-row.outbound {
    justify-content: flex-end;
}

.msg-bubble {
    max-width: min(520px, 85%);
    padding: 6px 8px 8px 10px;
    border-radius: var(--radius-bubble);
    box-shadow: 0 1px 0.5px rgba(11, 20, 26, 0.13);
    position: relative;
}

.msg-row.inbound .msg-bubble {
    background: var(--bg-inbound);
    border-top-left-radius: 0;
}

.msg-row.outbound .msg-bubble {
    background: var(--bg-outbound);
    border-top-right-radius: 0;
}

.msg-original {
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.4;
    font-size: 0.92rem;
}

.msg-translation {
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    color: var(--text-secondary);
    font-size: 0.85rem;
    white-space: pre-wrap;
    word-break: break-word;
    line-height: 1.35;
}

.msg-meta {
    display: flex;
    justify-content: flex-end;
    gap: 4px;
    margin-top: 4px;
    font-size: 0.68rem;
    color: var(--text-secondary);
}

.msg-media-label {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.msg-reaction {
    font-size: 1.15rem;
    line-height: 1.3;
}

.msg-reaction-label {
    font-size: 0.75rem;
    opacity: 0.75;
    margin-left: 0.25rem;
}

.msg-reactions-badge {
    margin-top: 0.35rem;
    font-size: 1rem;
    line-height: 1.2;
}

.msg-empty {
    margin: auto;
    text-align: center;
    color: var(--text-secondary);
    padding: 24px;
}

/* Composer */
.composer {
    background: var(--bg-panel);
    border-top: 1px solid var(--border);
    padding: 8px 12px calc(8px + var(--safe-bottom));
}

.composer-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
}

.lang-btn {
    border: 1px solid var(--border);
    background: var(--bg-panel);
    border-radius: 999px;
    padding: 8px 12px;
    font-size: 0.78rem;
    color: var(--text-secondary);
    cursor: default;
    white-space: nowrap;
    flex-shrink: 0;
}

.composer-input-wrap {
    flex: 1;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 8px 14px;
}

.composer-input-wrap textarea {
    width: 100%;
    border: none;
    outline: none;
    resize: none;
    max-height: 120px;
    background: transparent;
    line-height: 1.35;
}

.send-btn {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-size: 1.1rem;
    cursor: pointer;
    flex-shrink: 0;
}

.send-btn:hover {
    background: var(--accent-hover);
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.reply-status {
    min-height: 1em;
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin: 4px 8px 0;
}

.reply-status.error {
    color: var(--danger);
}

.reply-status.success {
    color: var(--accent);
}

/* Contact card */
.view-contact {
    position: absolute;
    inset: 0;
    z-index: 20;
    background: var(--bg-panel);
    transform: translateX(100%);
    transition: transform 0.22s ease;
}

.view-contact.open {
    transform: translateX(0);
}

.contact-header {
    height: var(--header-h);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border);
}

.contact-header h2 {
    margin: 0;
    font-size: 1rem;
    font-weight: 500;
}

.contact-body {
    overflow-y: auto;
    flex: 1;
    padding-bottom: calc(24px + var(--safe-bottom));
}

.contact-hero {
    text-align: center;
    padding: 28px 24px 20px;
    background: var(--bg-app);
    border-bottom: 1px solid var(--border);
}

.contact-hero h3 {
    margin: 16px 0 4px;
    font-size: 1.25rem;
}

.contact-phone {
    margin: 0;
    color: var(--text-secondary);
}

.contact-fields {
    margin: 0;
    padding: 8px 0;
}

.field-row {
    display: grid;
    grid-template-columns: 140px 1fr;
    gap: 8px 16px;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    align-items: start;
}

.field-row dt {
    margin: 0;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

.field-row dd {
    margin: 0;
    font-size: 0.92rem;
}

.field-row-block {
    grid-template-columns: 1fr;
}

.field-row-block dt {
    margin-bottom: 8px;
}

.field-row-block textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    resize: vertical;
    min-height: 96px;
}

.star-rating {
    display: flex;
    gap: 4px;
}

.star-rating button {
    border: none;
    background: transparent;
    font-size: 1.5rem;
    color: #d1d7db;
    cursor: pointer;
    padding: 0 2px;
    line-height: 1;
}

.star-rating button.active {
    color: #f5a623;
}

.attachment-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.attachment-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.88rem;
}

.attachment-list li:last-child {
    border-bottom: none;
}

.muted-text {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin: 0;
}

/* Desktop placeholder */
.chat-placeholder {
    display: grid;
    place-items: center;
    background: var(--bg-app);
    border-left: 1px solid var(--border);
}

.placeholder-inner {
    text-align: center;
    color: var(--text-secondary);
    padding: 24px;
}

.channel-status {
    margin-top: 12px;
    font-size: 0.82rem;
}

.whatsapp-connect {
    max-width: 360px;
    margin: 0 auto;
}

.whatsapp-connect h2 {
    color: var(--text, #111b21);
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.whatsapp-connect-help,
.whatsapp-connect-status {
    font-size: 0.88rem;
    line-height: 1.4;
}

.whatsapp-qr {
    display: block;
    width: 280px;
    height: 280px;
    margin: 16px auto;
    background: #fff;
    border-radius: 8px;
}

/* Responsive */
@media (max-width: 900px) {
    .shell {
        grid-template-columns: 1fr;
        position: relative;
    }

    .view-list {
        position: absolute;
        inset: 0;
        z-index: 1;
    }

    .view-list.hidden-mobile {
        display: none !important;
    }

    .view-chat {
        position: absolute;
        inset: 0;
        z-index: 2;
    }

    .back-btn {
        display: grid;
        place-items: center;
    }

    .chat-placeholder {
        display: none;
    }

    .message-feed {
        padding: 12px 4%;
    }

    .view-contact {
        left: 0;
    }
}

@media (min-width: 901px) {
    .back-btn {
        display: none;
    }

    .view-contact {
        left: var(--list-w);
        right: 0;
    }
}