/* The Conch Shell — layout & chat styles */
:root {
    --conch-bg: #0f1117;
    --conch-panel: #171a23;
    --conch-border: #2a2f3d;
    --conch-text: #e6e8ee;
    --conch-muted: #8a91a3;
    --conch-accent: #e8618c;
    --conch-user: #1f2534;
    --conch-code: #12141c;
}

html, body { height: 100%; margin: 0; }

body {
    background: var(--conch-bg);
    color: var(--conch-text);
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

.conch-app { display: flex; height: 100vh; height: 100dvh; overflow: hidden; }

/* Hamburger + backdrop: only relevant on small screens */
.conch-menu {
    display: none; background: none; border: 0; color: var(--conch-text);
    font-size: 1.3rem; cursor: pointer; padding: .2rem .5rem;
}
.conch-backdrop {
    display: none; position: fixed; inset: 0; z-index: 40;
    background: rgba(0, 0, 0, .55);
}

/* Sidebar */
.conch-sidebar {
    width: 260px; min-width: 260px;
    background: var(--conch-panel);
    border-right: 1px solid var(--conch-border);
    display: flex; flex-direction: column;
}
.conch-sidebar h1 { font-size: 1.05rem; margin: 0; padding: 1rem; }
.conch-sidebar h1 span { color: var(--conch-muted); font-size: .75rem; display: block; font-weight: normal; }
.conch-new {
    margin: 0 1rem .75rem; padding: .5rem;
    background: var(--conch-accent); color: #fff; border: 0; border-radius: 8px;
    cursor: pointer; font-size: .9rem;
}
.conch-convos { flex: 1; overflow-y: auto; padding: 0 .5rem 1rem; }
.conch-convo {
    display: flex; align-items: center; gap: .25rem;
    padding: .45rem .6rem; border-radius: 8px; cursor: pointer;
    color: var(--conch-text); font-size: .85rem;
}
.conch-convo:hover { background: var(--conch-user); }
.conch-convo.active { background: var(--conch-user); }
.conch-convo .title { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.conch-convo .del { background: none; border: 0; color: var(--conch-muted); cursor: pointer; visibility: hidden; }
.conch-convo:hover .del { visibility: visible; }
.conch-convo .del:hover { color: var(--conch-accent); }

/* Main column */
.conch-main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.conch-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: .6rem 1.25rem; border-bottom: 1px solid var(--conch-border);
    background: var(--conch-panel);
}
.conch-header .model-picker { display: flex; gap: .5rem; }
.conch-header .model-picker select {
    background: var(--conch-user); color: var(--conch-text);
    border: 1px solid var(--conch-border); border-radius: 8px; padding: .4rem .6rem;
    font-size: .9rem;
}

/* Transcript */
.conch-transcript { flex: 1; overflow-y: auto; padding: 1.25rem; scroll-behavior: smooth; }
.conch-transcript-inner { max-width: 860px; margin: 0 auto; }
.conch-msg { margin-bottom: 1.25rem; }
.conch-msg .bubble {
    padding: .8rem 1rem; border-radius: 12px; line-height: 1.55;
    overflow-wrap: break-word;
}
.conch-msg.user .bubble { background: var(--conch-user); margin-left: 15%; white-space: pre-wrap; }
.conch-msg.assistant .bubble { background: transparent; padding-left: 0; }
.conch-msg .meta {
    color: var(--conch-muted); font-size: .72rem; margin-top: .3rem;
    display: flex; gap: .75rem;
}
.conch-msg.user .meta { justify-content: flex-end; }
.conch-msg img.attachment {
    max-width: 220px; max-height: 220px; border-radius: 8px;
    display: inline-block; margin: .25rem .25rem 0 0; border: 1px solid var(--conch-border);
}
.conch-empty { text-align: center; color: var(--conch-muted); margin-top: 18vh; }
.conch-empty .shell { font-size: 3.5rem; }

/* Markdown content */
.bubble pre {
    position: relative; background: var(--conch-code); border: 1px solid var(--conch-border);
    border-radius: 10px; padding: .85rem; overflow-x: auto;
}
.bubble code { font-family: "Cascadia Code", Consolas, monospace; font-size: .85rem; }
.bubble p > code, .bubble li > code {
    background: var(--conch-code); padding: .1rem .35rem; border-radius: 5px;
}
.bubble table { border-collapse: collapse; }
.bubble th, .bubble td { border: 1px solid var(--conch-border); padding: .35rem .6rem; }
.bubble blockquote { border-left: 3px solid var(--conch-accent); margin-left: 0; padding-left: 1rem; color: var(--conch-muted); }
.conch-copy {
    position: absolute; top: .4rem; right: .4rem;
    background: var(--conch-user); color: var(--conch-muted);
    border: 1px solid var(--conch-border); border-radius: 6px;
    font-size: .7rem; padding: .2rem .5rem; cursor: pointer;
}
.conch-copy:hover { color: var(--conch-text); }

/* Streaming cursor */
.conch-cursor::after { content: "▍"; color: var(--conch-accent); animation: conch-blink 1s infinite; }
@keyframes conch-blink { 50% { opacity: 0; } }

/* Composer */
.conch-composer { border-top: 1px solid var(--conch-border); background: var(--conch-panel); padding: .9rem 1.25rem 1.1rem; }
.conch-composer-inner { max-width: 860px; margin: 0 auto; }
.conch-pending { display: flex; gap: .5rem; margin-bottom: .5rem; flex-wrap: wrap; }
.conch-pending .thumb { position: relative; }
.conch-pending img { width: 64px; height: 64px; object-fit: cover; border-radius: 8px; border: 1px solid var(--conch-border); }
.conch-pending .rm {
    position: absolute; top: -6px; right: -6px; width: 20px; height: 20px;
    border-radius: 50%; background: var(--conch-accent); color: #fff; border: 0;
    font-size: .7rem; line-height: 1; cursor: pointer;
}
.conch-inputrow { display: flex; gap: .6rem; align-items: flex-end; }
.conch-inputrow textarea {
    flex: 1; resize: none; min-height: 48px; max-height: 200px;
    background: var(--conch-user); color: var(--conch-text);
    border: 1px solid var(--conch-border); border-radius: 12px;
    padding: .7rem .9rem; font-size: .95rem; font-family: inherit; outline: none;
}
.conch-inputrow textarea:focus { border-color: var(--conch-accent); }
.conch-btn {
    background: var(--conch-user); color: var(--conch-text);
    border: 1px solid var(--conch-border); border-radius: 10px;
    padding: .65rem .9rem; cursor: pointer; font-size: .95rem;
}
.conch-btn:hover:not(:disabled) { border-color: var(--conch-accent); }
.conch-btn:disabled { opacity: .45; cursor: default; }
.conch-btn.send { background: var(--conch-accent); border-color: var(--conch-accent); color: #fff; }
.conch-btn.stop { background: #b33; border-color: #b33; color: #fff; }
.conch-hint { color: var(--conch-muted); font-size: .72rem; margin-top: .45rem; text-align: center; }
.conch-error {
    background: #3a1d24; border: 1px solid #b33; color: #f0b8c4;
    border-radius: 8px; padding: .6rem .9rem; margin-bottom: .75rem; font-size: .85rem;
}
.conch-dragging { outline: 2px dashed var(--conch-accent); outline-offset: -8px; }

#blazor-error-ui { display: none; position: fixed; bottom: 0; width: 100%; background: #b33; color: #fff; padding: .5rem 1rem; z-index: 100; }

/* ---- Mobile ---- */
@media (max-width: 768px) {
    .conch-menu { display: block; }
    .conch-backdrop { display: block; }

    /* Sidebar becomes a slide-in drawer */
    .conch-sidebar {
        position: fixed; top: 0; bottom: 0; left: 0; z-index: 50;
        transform: translateX(-100%);
        transition: transform .2s ease;
        box-shadow: 4px 0 24px rgba(0, 0, 0, .5);
    }
    .sidebar-open .conch-sidebar { transform: translateX(0); }

    .conch-header { padding: .45rem .6rem; gap: .4rem; }
    .conch-header .model-picker { flex: 1; justify-content: flex-end; min-width: 0; }
    .conch-header .model-picker select {
        font-size: .8rem; padding: .35rem .4rem; min-width: 0; max-width: 46vw;
        text-overflow: ellipsis;
    }

    .conch-transcript { padding: .75rem; }
    .conch-msg.user .bubble { margin-left: 8%; }
    .conch-msg img.attachment { max-width: 150px; max-height: 150px; }
    .conch-empty { margin-top: 10vh; }
    .conch-empty .shell { font-size: 2.75rem; }

    .conch-composer { padding: .6rem .6rem calc(.75rem + env(safe-area-inset-bottom)); }
    /* 16px prevents iOS Safari from zooming the page when the textarea gets focus */
    .conch-inputrow textarea { font-size: 16px; min-height: 42px; }
    .conch-btn { padding: .55rem .7rem; }
    .conch-hint { display: none; }
}