@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;600&display=swap');

:root {
    color-scheme: light;
    --bg: #f4f1ed;
    --panel: #ffffff;
    --panel-dark: #ece8e1;
    --text: #1f1f1f;
    --muted: #5a5a5a;
    --accent: #1e6f6b;
    --accent-2: #d07a2b;
    --border: #c9c2b8;
    --shadow: rgba(29, 25, 20, 0.12);
    --focus: #1e6f6b;
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

body {
    margin: 0;
    font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
    background: radial-gradient(circle at top, #f8f5f2, #e8e1d9);
    color: var(--text);
    min-height: 100vh;
}

.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: var(--panel-dark);
    border-bottom: 2px solid var(--border);
}

.brand {
    display: flex;
    gap: 14px;
    align-items: center;
}

.brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 6px;
    background: var(--accent);
    color: #ffffff;
    font-weight: 700;
    display: grid;
    place-items: center;
    letter-spacing: 1px;
    font-family: "IBM Plex Mono", monospace;
}

.brand-name {
    font-size: 1.1rem;
    font-weight: 600;
}

.brand-tag {
    color: var(--muted);
    font-size: 0.9rem;
}

.session {
    display: flex;
    gap: 12px;
    align-items: center;
}

.status-pill {
    padding: 6px 12px;
    border-radius: 999px;
    background: var(--panel);
    border: 1px solid var(--border);
    font-size: 0.9rem;
}

.app-main {
    flex: 1;
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr) 280px;
    gap: 16px;
    padding: 16px 24px 24px;
}

.rooms-panel,
.auth-panel,
.side-panel,
.chat-panel {
    background: var(--panel);
    border: 2px solid var(--border);
    box-shadow: 0 6px 18px var(--shadow);
    border-radius: 8px;
    padding: 16px;
}

.rooms-panel h2,
.auth-panel h2,
.side-panel h2,
.chat-panel h2 {
    margin: 0 0 12px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--muted);
}

.rooms-list {
    list-style: none;
    padding: 0;
    margin: 0 0 12px;
    display: grid;
    gap: 8px;
}

.rooms-list button {
    width: 100%;
    text-align: left;
}

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

.chat-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.chat-top h2 {
    margin: 0;
    font-size: 1.2rem;
    color: var(--text);
    text-transform: none;
    letter-spacing: 0;
}

.chat-top p {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 0.9rem;
}

.message-pane {
    flex: 1;
    background: #fcfbf9;
    border: 2px inset var(--border);
    padding: 12px;
    overflow-y: auto;
    position: relative;
}

.message-pane.no-scroll {
    overflow: hidden;
}

.history-indicator {
    position: sticky;
    top: 0;
    background: var(--panel-dark);
    border: 1px solid var(--border);
    padding: 6px 10px;
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 10px;
}

.message-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 10px;
}

.message {
    padding: 10px 12px;
    border-radius: 6px;
    background: var(--panel);
    border: 1px solid var(--border);
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.6);
}

.message.own {
    border-color: var(--accent);
    background: rgba(30, 111, 107, 0.08);
}

.message-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    font-family: "IBM Plex Mono", monospace;
    font-size: 0.85rem;
    color: var(--muted);
    margin-bottom: 6px;
}

.message-user {
    color: var(--accent);
    font-weight: 600;
}

.message-text {
    white-space: pre-wrap;
    font-size: 0.95rem;
    line-height: 1.4;
}

.message-form {
    display: grid;
    gap: 8px;
}

.message-input-row {
    display: grid;
    grid-template-columns: 1fr 120px;
    gap: 12px;
    align-items: stretch;
}

textarea,
input {
    font: inherit;
    padding: 10px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: #ffffff;
    color: var(--text);
}

textarea:focus,
input:focus,
button:focus {
    outline: 2px solid var(--focus);
    outline-offset: 2px;
}

label {
    font-size: 0.9rem;
    font-weight: 500;
}

.help {
    margin: 0;
    font-size: 0.85rem;
    color: var(--muted);
    min-height: 1.1em;
}

.auth-panel {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.auth-switch {
    display: flex;
    gap: 8px;
}

.auth-form {
    display: grid;
    gap: 8px;
}

.key-panel {
    border: 1px dashed var(--border);
    padding: 10px;
    background: #faf7f2;
}

.key-title {
    margin: 0 0 8px;
    font-weight: 600;
}

.key-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    align-items: center;
}

.key-row input {
    min-width: 0;
}

.auth-info {
    border-top: 1px solid var(--border);
    padding-top: 10px;
    font-size: 0.85rem;
    color: var(--muted);
}

.turnstile-widget {
    width: 100%;
    overflow: hidden;
}

.panel-faq-link {
    display: block;
    margin-top: auto;
    padding-top: 12px;
    font-size: 0.8rem;
    color: var(--muted);
    text-decoration: none;
    text-align: center;
    opacity: 0.7;
}

.panel-faq-link:hover {
    opacity: 1;
    color: var(--accent);
}

.participants-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 4px;
}

.participant {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 6px;
    border-radius: 4px;
    font-size: 0.9rem;
}

.participant-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}

.participant.idle {
    color: var(--muted);
}

.participant.idle .participant-dot {
    background: var(--border);
}

.participant-self {
    font-weight: 600;
}

.button {
    font: inherit;
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--panel);
    color: var(--text);
    cursor: pointer;
}

.button.primary {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
}

.button.ghost {
    background: transparent;
}

.button.active {
    border-color: var(--accent);
    color: var(--accent);
}

@media (max-width: 1100px) {
    .app-main {
        grid-template-columns: 1fr;
    }

    .rooms-panel,
    .auth-panel,
    .chat-panel {
        order: 0;
    }

    .message-input-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .app-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }

    .brand-tag {
        display: none;
    }

    .app-main {
        padding: 12px;
    }
}

@media (prefers-reduced-motion: reduce) {
    * {
        scroll-behavior: auto;
    }
}