/* Mneme Memory System - Warm Dark Theme
   Source Serif 4 for prose, Fira Code for status. Coral accents.
*/

@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,300;0,8..60,400;0,8..60,600;1,8..60,300;1,8..60,400&family=Fira+Code:wght@300;400&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --slate: #262624;
    --gravel: #30302e;
    --granite: #878787;
    --andesite: #a2a2a2;
    --chalk: #76746e;
    --coral: #d97757;
    --coral-50: rgba(217, 119, 87, 0.5);
    --coral-15: rgba(217, 119, 87, 0.15);
    --coral-20: rgba(217, 119, 87, 0.2);
    --white: #ffffff;
    --error: #ff4444;

    /* Typography */
    --font-serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
    --font-mono: 'Fira Code', 'SF Mono', 'Cascadia Code', Consolas, monospace;
    --fs: 15px;
    --fs-small: 12px;
    --fs-heading: 38px;
    --lh: 22px;
    --lh-body: 20px;

    /* Effects */
    --shadow-card: 0px 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-input: 0px -2px 5px rgba(0, 0, 0, 0.15);

    /* Header height */
    --header-h: 78px;

    /* Safe areas */
    --safe-area-top: env(safe-area-inset-top);
    --safe-area-bottom: env(safe-area-inset-bottom);
    --safe-area-left: env(safe-area-inset-left);
    --safe-area-right: env(safe-area-inset-right);
}

body {
    font-family: var(--font-serif);
    font-size: var(--fs);
    font-weight: 300;
    line-height: var(--lh);
    background-color: var(--slate);
    color: var(--white);
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow: hidden;
    padding-top: var(--safe-area-top);
    padding-left: var(--safe-area-left);
    padding-right: var(--safe-area-right);
    padding-bottom: var(--safe-area-bottom);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ── APP CONTAINER ──────────────────────────────── */

.app-container {
    width: 100%;
    max-width: 650px;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: clip;
}

/* Progressive blur zone — 5 layers, each with its own height so layers are fully
   opaque across most of their range. Only the last ~4px fades to transparent,
   minimising the "foggy scatter" that comes from blending semi-opaque blurred
   content with the original. Result: defocused text at top → sharp text below.

   Each layer fades in at the top AND out at the bottom (transparent→black→black→transparent)
   so the zone entry is soft, not abrupt. Heights use equal +14px steps, extended lower.
   Layer heights: 20 → 34 → 48 → 62 → 76 → 90px. All start at top: 36px (text baseline). */
.blur-layer {
    position: absolute;
    top: 36px;
    left: 0;
    right: 0;
    z-index: 99;  /* behind header (100), in front of messages */
    pointer-events: none;
}
/* Layer 1 — 20px, heaviest blur. Fade-in ~25% (~5px), fade-out last 30%. */
.blur-layer-1 {
    height: 20px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 25%, black 70%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, black 25%, black 70%, transparent 100%);
}
/* Layer 2 — 34px (+14px). Fade-in ~15% (~5px). */
.blur-layer-2 {
    height: 34px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 15%, black 80%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, black 15%, black 80%, transparent 100%);
}
/* Layer 3 — 48px (+14px). Fade-in ~10% (~5px). */
.blur-layer-3 {
    height: 48px;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 10%, black 84%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, black 10%, black 84%, transparent 100%);
}
/* Layer 4 — 62px (+14px). Fade-in ~8% (~5px). */
.blur-layer-4 {
    height: 62px;
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 8%, black 87%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, black 8%, black 87%, transparent 100%);
}
/* Layer 5 — 92px (+16px), barely defocused. Fade-out starts at 76% for
   a longer, gentler taper so it doesn't cut off mid-word. */
.blur-layer-5 {
    height: 92px;
    backdrop-filter: blur(1.5px);
    -webkit-backdrop-filter: blur(1.5px);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 6%, black 76%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, black 6%, black 76%, transparent 100%);
}
/* Layer 6 — 112px (+20px), whisper blur — text almost sharp, eases the zone to zero. */
.blur-layer-6 {
    height: 112px;
    backdrop-filter: blur(0.6px);
    -webkit-backdrop-filter: blur(0.6px);
    -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 5%, black 78%, transparent 100%);
    mask-image: linear-gradient(to bottom, transparent 0%, black 5%, black 78%, transparent 100%);
}

/* ── HEADER (absolute overlay — messages scroll under gradient) ── */

.header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--header-h);
    /* Figma: backdrop-blur 0px — gradient only, no blur */
    background: linear-gradient(to bottom, #30302e 0%, #30302e 45%, rgba(48, 48, 46, 0) 100%);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 16px 16px 0;
    pointer-events: none;
}

.header-left,
.header-right,
.header-center {
    pointer-events: auto;
}

.header-left,
.header-right {
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.header-center {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    cursor: pointer;
}

.header-profile-name {
    font-family: var(--font-serif);
    font-size: 19px;
    font-weight: 400;
    color: var(--white);
    white-space: nowrap;
}

.header-model-label {
    font-family: var(--font-serif);
    font-size: 19px;
    font-weight: 400;
    color: var(--granite);
    white-space: nowrap;
}

.header-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.8;
    transition: opacity 0.15s;
}

.header-btn:hover {
    opacity: 1;
}

.header-btn img {
    display: block;
}

/* ── STARTING SCREEN ─────────────────────────────── */

.starting-screen {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0 40px 160px;
    padding-top: calc(var(--header-h) + 30px);
    gap: 20px;
}

.starting-screen.hidden {
    display: none;
}

.starting-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.model-badge {
    display: flex;
    align-items: center;
    gap: 7px;
    background: var(--gravel);
    border: 1.5px solid var(--chalk);
    border-radius: 20px;
    padding: 7px 14px 7px 10px;
    cursor: pointer;
    white-space: nowrap;
}

.model-badge-icon {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.model-badge-text {
    font-family: var(--font-serif);
    font-size: var(--fs);
    font-weight: 400;
    color: var(--white);
}

.model-badge-version {
    font-family: var(--font-serif);
    font-size: var(--fs);
    font-weight: 400;
    color: var(--granite);
}

.starting-headline {
    font-family: var(--font-serif);
    font-size: var(--fs-heading);
    font-weight: 400;
    color: var(--white);
    text-align: center;
    line-height: 1.15;
}

/* ── MESSAGES ────────────────────────────────────── */

.messages-container {
    /* Start from the very top — header gradient overlays and creates fade effect */
    flex: 1;
    overflow-y: auto;
    padding: 30px 16px 60px;
    scroll-behavior: smooth;
    /* Let touch events bubble through for scroll — header handles its own events */
    -webkit-overflow-scrolling: touch;
    /* Anchor messages to bottom when conversation is sparse */
    display: flex;
    flex-direction: column;
}

/* Spacer that consumes empty space above messages, pushing them toward the bottom.
   Shrinks to 0 when messages overflow — no effect on scroll behaviour. */
.messages-container::before {
    content: '';
    flex: 1;
}

/* When status-float is hidden its -60px margin-top overlap disappears,
   so the compensating bottom padding is no longer needed. */
.app-container:has(> .status-float.hidden) .messages-container {
    padding-bottom: 16px;
}

.messages-container.hidden {
    display: none;
}

.messages-container::-webkit-scrollbar {
    width: 3px;
}

.messages-container::-webkit-scrollbar-track {
    background: transparent;
}

.messages-container::-webkit-scrollbar-thumb {
    background: var(--chalk);
    border-radius: 2px;
    opacity: 0.5;
}

/* ── WELCOME (removed on first message) ─────────── */

.welcome-message {
    display: none;
}

/* ── MESSAGE ITEMS ───────────────────────────────── */

.message {
    margin-bottom: 16px;
    animation: fade 0.15s ease;
    position: relative;
}

@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

/* User message — right-aligned bubble */
.message.user {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.message.user .message-content {
    background: var(--gravel);
    border: 1.5px solid var(--chalk);
    /* top-left top-right bottom-right bottom-left — 1px gives the chat "tail" */
    border-radius: 24px 24px 1px 24px;
    padding: 11px 20px 13px;
    width: fit-content;
    max-width: 100%;
    word-wrap: break-word;
    font-family: var(--font-serif);
    font-size: var(--fs);
    font-weight: 300;
    line-height: 22px;
    color: var(--white);
    transition: border-color 0.3s ease;
}

/* Extra vertical breathing room when bubble wraps to multiple lines */
.message.user .message-content.multi-line {
    padding-top: 14px;
    padding-bottom: 16px;
}

/* AI message — no bubble, light weight, left edge */
.message.assistant {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.message.assistant .message-content {
    color: var(--white);
    max-width: 100%;
    word-wrap: break-word;
    font-family: var(--font-serif);
    font-size: var(--fs);
    font-weight: 300;
    line-height: var(--lh);
}

.message.assistant .message-content p,
.message.intermediate .message-content p,
.message.user .message-content p {
    margin-bottom: 11px;
}

.message.assistant .message-content p:last-child,
.message.intermediate .message-content p:last-child,
.message.user .message-content p:last-child {
    margin-bottom: 0;
}


/* Markdown in messages */
.message-content strong {
    color: var(--white);
    font-weight: 600;
}

.message-content em {
    font-style: italic;
}

.message-content code {
    color: var(--coral);
    font-family: var(--font-mono);
    font-size: 13px;
    background: rgba(217, 119, 87, 0.08);
    padding: 1px 5px;
    border-radius: 3px;
}

.cmd-highlight {
    color: var(--coral);
    font-family: var(--font-mono);
    font-size: 0.88em;
}

.code-block {
    display: block;
    background: rgba(217, 119, 87, 0.1);
    border-radius: 6px;
    padding: 10px 14px;
    margin: 6px 0;
    overflow-x: auto;
    white-space: pre;
}

.code-block code {
    color: var(--coral);
    font-family: var(--font-mono);
    font-size: 12px;
    background: none;
    padding: 0;
    border-radius: 0;
    white-space: inherit;
}

.message-hr {
    border: none;
    border-top: 1px solid rgba(135, 135, 135, 0.35);
    margin: 10px 0;
    width: 100%;
}

.message-content a {
    color: var(--coral);
    text-decoration: underline;
    text-decoration-style: dotted;
    text-underline-offset: 2px;
}

.message-content a:hover { color: var(--white); }

/* Lists and headers in messages */
.message-content ul,
.message-content ol {
    margin: 8px 0;
    padding-left: 20px;
}

.message-content li {
    margin-bottom: 4px;
    line-height: var(--lh);
}

.message-content li:last-child {
    margin-bottom: 0;
}

.message-content h1,
.message-content h2,
.message-content h3 {
    font-family: var(--font-serif);
    font-weight: 600;
    color: var(--white);
    margin: 12px 0 6px;
    line-height: 1.3;
}

.message-content h1 { font-size: 1.2em; }
.message-content h2 { font-size: 1.1em; }
.message-content h3 { font-size: 1em; }

/* Intermediate */
.message.intermediate { display: flex; justify-content: flex-start; }
.message.intermediate .message-content {
    color: var(--white);
    max-width: 100%;
    word-wrap: break-word;
    font-family: var(--font-serif);
    font-size: var(--fs);
    font-weight: 300;
    line-height: var(--lh);
}

/* Notification (routed to status log) */
.message.notification { display: none; }

/* ── MESSAGE FOOTER ──────────────────────────────── */

.message-timestamp {
    color: var(--chalk);
    font-size: 11px;
    font-family: var(--font-mono);
    font-weight: 300;
}

.message.user .message-timestamp { text-align: right; }
.message.assistant .message-timestamp { text-align: left; }

.message-footer {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: 8px;
}

/* User footer is absolute — taken out of flow so next message positions
   from the bubble's bottom edge, not the timestamp's */
.message.user .message-footer {
    position: absolute;
    top: calc(100% + 5px);
    right: 0;
    margin-top: 0;
    justify-content: flex-end;
}
.message.assistant .message-footer,
.message.intermediate .message-footer { justify-content: space-between; }

/* ── ACTION BUTTONS (inline in footer) ────────────── */

.message-actions {
    display: flex;
    gap: 18px;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.message.assistant:hover .message-actions,
.message.intermediate:hover .message-actions,
.message-actions:focus-within,
.message-actions.visible {
    opacity: 1;
}

.action-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    transition: opacity 0.15s;
}

.action-btn img {
    width: 13px;
    height: 13px;
    display: block;
    opacity: 0.7;
}

.action-btn:hover img {
    opacity: 1;
}

.action-btn.copy-active img {
    opacity: 1;
    filter: drop-shadow(0 0 3px rgba(217, 119, 87, 0.7));
    transition: filter 0.1s, opacity 0.1s;
}

/* TTS button in action row */
.tts-btn {
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: opacity 0.15s;
}

.tts-btn img {
    width: 13px;
    height: 13px;
    display: block;
    opacity: 0.7;
}

.tts-btn:hover img { opacity: 1; }
.tts-btn.playing img { opacity: 1; filter: brightness(3) sepia(1) hue-rotate(330deg) saturate(5); }
.tts-btn.loading { opacity: 0.4; animation: pulse 1s infinite; }
@keyframes pulse { 0%, 100% { opacity: 0.3; } 50% { opacity: 0.7; } }

/* ── STATUS FLOAT (collapsed bar / expandable cube above input) ── */

/* Collapsed state (default when visible) — peeks from behind input */
.status-float {
    flex-shrink: 0;
    position: relative;
    z-index: 2;  /* Below input (z-index: 5) so it tucks behind */
    overflow: hidden;
    height: 0;
    /* Pull up into messages area so backdrop-filter has content to blur;
       tuck bottom behind input so bar peeks through rounded corners */
    margin-top: -60px;
    margin-bottom: -28px;
    /* Figma layers directly on element for collapsed state */
    background:
        linear-gradient(0deg, rgba(217, 119, 87, 0.12), rgba(217, 119, 87, 0.12)),
        linear-gradient(0deg, rgba(38, 38, 36, 0.80), rgba(38, 38, 36, 0.80));
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-radius: 26px 26px 0 0;
    transition: height 0.3s ease, margin-top 0.3s ease, margin-bottom 0.3s ease;
}

/* Wave active: float bar collapses behind input while wave plays */
.status-float.wave-active {
    height: 0 !important;
    margin-top: 0;
    margin-bottom: 0;
}

/* Hidden: no size or margins — zero layout impact */
.status-float.hidden {
    height: 0 !important;
    margin-top: 0;
    margin-bottom: 0;
}

/* Inner wrapper: fixed 10px from top — decouples the visible head from the tuck depth */
.status-float-inner {
    position: absolute;
    top: 10px;
    left: 0;
    right: 0;
}

/* ── Expanded state: floating cube ── */
.status-float.expanded {
    position: absolute;
    left: 0;
    right: 0;
    z-index: 110;  /* Above blur layers (99) and header (100) */
    margin-top: 0;
    margin-bottom: 0;
    padding: 0 0 16px;  /* only bottom gap — inner wrapper carries the content padding */
    overflow: visible;
    height: auto !important;
    /* Remove collapsed background — pseudo handles it */
    background: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-radius: 0;
    transition: none;
}

/* Visual cube pseudo — only in expanded state */
.status-float.expanded::before {
    content: '';
    position: absolute;
    top: 0;
    left: 16px;
    right: 16px;
    bottom: 16px;   /* 16px gap between box bottom and input top */
    border-radius: 26px;
    background:
        linear-gradient(0deg, rgba(217, 119, 87, 0.12), rgba(217, 119, 87, 0.12)),
        linear-gradient(0deg, rgba(38, 38, 36, 0.80), rgba(38, 38, 36, 0.80));
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

/* Inner wrapper switches to normal flow in expanded — carries all content padding */
.status-float.expanded .status-float-inner {
    position: relative;
    top: auto;
    left: auto;
    right: auto;
    padding: 22px 42px 24px;
}

/* ── STATUS LOG PANEL ────────────────────────────── */

.status-log-panel {
    position: relative;
    z-index: 1;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease;
}

.status-log-panel.expanded {
    max-height: calc(100dvh - 120px);
    overflow-y: auto;
    padding: 0;
}

.status-log-panel { scrollbar-width: none; }
.status-log-panel::-webkit-scrollbar { display: none; }

.status-log-line {
    padding: 0;
    font-family: var(--font-mono);
    font-size: 13px;
    color: var(--coral);
    word-wrap: break-word;
    overflow-wrap: break-word;
    white-space: pre-wrap;
    line-height: 15px;
    margin-bottom: 9px;
}

.status-log-line:last-child {
    margin-bottom: 0;
}
.status-log-line.log-info { color: var(--coral); }
.status-log-line.log-success { color: var(--coral); opacity: 0.8; }
.status-log-line.log-warning { color: var(--coral); opacity: 0.6; }
.status-log-line.log-error { color: var(--error); }
.status-log-line.log-special { color: var(--coral); }

/* ── NOTIFICATION BAR (always visible) ──────────── */

.notification-bar {
    position: relative;
    z-index: 1;
    min-height: 40px;
    height: auto;
    display: flex;
    align-items: center;
    padding: 0 20px 20px 20px;  /* bottom: tuck + visible gap must equal head + padding-top above */
    cursor: pointer;
    user-select: none;
    transition: opacity 0.3s;
}

/* Hidden when expanded — avoids showing the latest event twice */
.status-float.expanded .notification-bar {
    display: none;
}

/* Idle: slightly dimmed */
.notification-bar.idle {
    opacity: 0.5;
}

/* Active: full opacity */
.notification-bar.active {
    opacity: 1;
}

.notification-bar .spinner {
    color: var(--coral);
    width: 1em;
    text-align: center;
    flex-shrink: 0;
    font-family: var(--font-mono);
    font-size: 13px;
    margin-right: 6px;
    display: block;
    opacity: 0;
    transition: opacity 0.2s;
}

.notification-bar.active .spinner {
    opacity: 1;
}

.notification-bar-text {
    flex: 1;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 400;
    color: var(--coral);
    line-height: 17px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    min-width: 1px;
    min-height: 1px;
    white-space: pre-wrap;
}

/* ── INPUT BAR ───────────────────────────────────── */

.input-wrapper {
    flex-shrink: 0;
    position: relative;
    z-index: 5;
}

.input-container {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background: var(--gravel);
    border-top: 1.5px solid var(--chalk);
    border-left: 1px solid var(--granite);
    border-right: 1px solid var(--granite);
    border-radius: 0;
    box-shadow: var(--shadow-input);
    padding: 16px 17px calc(14px + var(--safe-area-bottom, 0px)) 22px;
    overflow: hidden;
    transition: height 0.4s ease, background-color 0.3s ease,
                border-top-color 0.3s ease, box-shadow 0.4s ease;
}

.input-container.drag-over {
    border-color: var(--coral);
}

.input-container.streaming {
    background: var(--slate);
    border-top-color: transparent;
    border-left-color: transparent;
    border-right-color: transparent;
    box-shadow: none;
    overflow: visible;
}

/* Gradient fade from messages into the slate input area — only while float bar is gone */
.app-container:has(.status-float.wave-active) .input-container.streaming::before {
    content: '';
    position: absolute;
    top: -40px;
    left: 0;
    right: 0;
    height: 40px;
    background: linear-gradient(to bottom, transparent, var(--slate));
    pointer-events: none;
    z-index: 1;
}

/* Tighten bottom padding when wave is active so last message sits ~20px above wave */
.app-container:has(.status-float.wave-active) .messages-container {
    padding-bottom: 20px;
}

.input-container.streaming .input-field,
.input-container.streaming .input-row {
    display: none;
}

.streaming-wave-canvas {
    position: absolute;
    bottom: 22px;   /* center (22+10=32px) matches stop-btn center (12+20=32px) */
    left: 0;
    width: 100%;
    height: 20px;
    display: none;
    z-index: 9;
    pointer-events: none;
}

.input-row {
    display: flex;
    gap: 0;
    align-items: center;
    justify-content: space-between;
    margin-top: 4px;
}

.input-left-icons {
    display: flex;
    align-items: center;
    gap: 18px;
    flex-shrink: 0;
}

.input-icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: transparent;
    border: 1.7px solid rgba(255,255,255,0.3);
    cursor: pointer;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    opacity: 1;
    transition: opacity 0.15s;
}

.input-icon-btn img {
    display: block;
    filter: brightness(0) invert(1);
    opacity: 0.3;
}

.input-field {
    width: 100%;
    background: none;
    color: var(--white);
    border: none;
    padding: 2px 8px;
    -webkit-appearance: none;
    appearance: none;
    font-family: var(--font-serif);
    font-size: var(--fs);
    font-weight: 300;
    line-height: var(--lh);
    height: calc(var(--lh) + 4px);
    resize: none;
    max-height: 200px;
    overflow-y: auto;
}

.input-field:focus { outline: none; }
.input-field::placeholder {
    color: var(--chalk);
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 300;
    letter-spacing: 0.04em;
}
.input-field:disabled { opacity: 0.3; cursor: not-allowed; }

/* Send button — outlined coral circle */
.send-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: transparent;
    border: 1.7px solid var(--coral);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: opacity 0.15s;
    opacity: 0;
}

.send-btn.has-text:not(:disabled) { opacity: 1; }
.send-btn:hover:not(:disabled) { opacity: 1; }
.send-btn:disabled { opacity: 0; cursor: not-allowed; }

.chevron-icon {
    color: var(--coral);
    display: block;
    flex-shrink: 0;
}

.chevron-up   { transform: translateY(-1px) rotate(-90deg); }
.chevron-down { transform: translateY(1px) rotate(90deg); }

/* ── WAVE-LEVEL CONTROLS ─────────────────────────── */

/* Stop button — sits on wave line at right, hidden until streaming */
.stop-btn {
    position: absolute;
    bottom: 12px;
    right: 18px;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1.7px solid var(--coral);
    background: var(--slate);
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    flex-shrink: 0;
    z-index: 10;
    transition: opacity 0.15s;
}

.stop-btn.visible { display: flex; }

/* Outlined rounded square icon inside stop button */
.stop-icon {
    display: block;
    width: 14px;
    height: 14px;
    border: 1.7px solid var(--coral);
    border-radius: 3px;
    flex-shrink: 0;
}

/* X icon inside stop button when interrupted */
.stop-icon-x {
    color: var(--coral);
    font-size: 18px;
    line-height: 1;
    display: block;
}

/* Wave status pill — centered on line, shown during continuation phase */
.wave-pill {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%) scaleY(1);
    transform-origin: center center;
    height: 40px;
    border-radius: 20px;
    border: 1.7px solid var(--coral);
    background: var(--slate);
    color: var(--coral);
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
    padding: 0 18px;
    max-width: calc(100% - 120px);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    pointer-events: auto;
    cursor: pointer;
    z-index: 10;
}

.wave-pill.animating-in {
    animation: wavePillGrow 0.28s ease-out both;
}

@keyframes wavePillGrow {
    from { transform: translateX(-50%) scaleY(0); opacity: 0; }
    55%  { transform: translateX(-50%) scaleY(1); opacity: 0; }
    to   { transform: translateX(-50%) scaleY(1); opacity: 1; }
}

/* Interrupted pill — left-aligned, shown after response is interrupted */
.wave-interrupted-pill {
    position: absolute;
    bottom: 12px;
    left: 20px;
    transform: scaleY(1);
    transform-origin: center center;
    height: 40px;
    border-radius: 20px;
    border: 1.7px solid var(--coral);
    background: var(--slate);
    color: var(--coral);
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.02em;
    display: flex;
    align-items: center;
    padding: 0 18px;
    max-width: calc(100% - 170px);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    pointer-events: none;
    z-index: 10;
    opacity: 0;
}

.wave-interrupted-pill.animating-in {
    animation: wavePillGrowLeft 0.28s ease-out both;
}

@keyframes wavePillGrowLeft {
    from { transform: scaleY(0); opacity: 0; }
    55%  { transform: scaleY(1); opacity: 0; }
    to   { transform: scaleY(1); opacity: 1; }
}

/* YES button — pill to the left of the stop button, shown when interrupted */
.wave-yes-btn {
    position: absolute;
    bottom: 12px;
    right: 62px;   /* 18px margin + 40px stop btn + 4px gap */
    transform: scaleY(1);
    transform-origin: center center;
    height: 40px;
    border-radius: 20px;
    border: 1.7px solid var(--coral);
    background: var(--slate);
    color: var(--coral);
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 0.08em;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 16px;
    cursor: pointer;
    z-index: 10;
    opacity: 0;
    transition: opacity 0.15s;
}

.wave-yes-btn.animating-in {
    animation: wavePillGrowLeft 0.28s ease-out 0.06s both;
}

.wave-yes-btn.visible {
    opacity: 1;
}

.wave-yes-btn:hover { opacity: 0.8; }

/* Interrupted indicator on assistant message */
.interrupted-indicator {
    font-style: italic;
    color: var(--chalk);
    font-size: 0.85em;
    opacity: 0.7;
}

/* File attach (hidden, triggered by plus icon) */
.attach-btn { display: none; }

/* Pending attachments */
.pending-attachments {
    display: none;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0 0 4px 0;
}

.pending-attachments.has-items {
    display: flex;
    padding: 0 0 6px 0;
}

.pending-attachment-item {
    position: relative;
    width: 80px;
    height: 80px;
    border-radius: 10px;
    overflow: hidden;
    flex-shrink: 0;
    cursor: pointer;
}

.attachment-preview {
    width: 100%;
    height: 100%;
    background: var(--gravel);
    display: flex;
    align-items: center;
    justify-content: center;
}

.attachment-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.file-icon {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--coral);
}

.attachment-remove {
    position: absolute;
    top: 5px;
    right: 5px;
    background: rgba(30, 30, 28, 0.75);
    border: none;
    border-radius: 3px;
    color: var(--granite);
    cursor: pointer;
    font-size: 13px;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    padding: 0;
    z-index: 2;
}

.attachment-remove:hover {
    background: rgba(30, 30, 28, 0.95);
    color: var(--white);
}

/* Expanded image preview — fills messages area above input on tap */
.attachment-expanded-overlay {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    max-width: calc(100% - 32px);
    /* bottom and max-height set by JS */
    border-radius: 16px;
    overflow: hidden;
    z-index: 101;
    box-shadow: 0 8px 32px rgba(0,0,0,0.6);
    cursor: pointer;
    animation: expandIn 0.18s ease-out both;
}

.attachment-expanded-overlay img {
    display: block;
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: inherit;
}

@keyframes expandIn {
    from { opacity: 0; transform: translateX(-50%) scale(0.94); }
    to   { opacity: 1; transform: translateX(-50%) scale(1); }
}


/* ── SCROLL BUTTON ───────────────────────────────── */

.scroll-to-bottom {
    position: absolute;
    bottom: calc(100% + 10px);
    right: 18px;
    background: var(--gravel);
    border: 1.7px solid var(--coral);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.35);
    opacity: 0.7;
    transition: opacity 0.15s;
    z-index: 11;
}


.scroll-to-bottom.visible { display: flex; }
.scroll-to-bottom:hover,
.scroll-to-bottom:active { opacity: 1; }

/* ── LOADING (hidden) ────────────────────────────── */

.loading-indicator { display: none !important; }

/* ── ERROR BANNER ────────────────────────────────── */

.error-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--gravel);
    border-bottom: 1.5px solid var(--error);
    color: var(--error);
    padding: 8px 16px;
    display: none;
    align-items: center;
    justify-content: space-between;
    z-index: 200;
    font-family: var(--font-mono);
    font-size: 11px;
}

.error-banner.active { display: flex; }
.error-message { flex: 1; }

.error-close {
    background: none;
    border: none;
    color: var(--error);
    cursor: pointer;
    padding: 4px;
    font-size: 14px;
    line-height: 1;
    opacity: 0.7;
    transition: opacity 0.15s;
}

.error-close:hover { opacity: 1; }

/* ── MODALS ──────────────────────────────────────── */

.modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(38, 38, 36, 0.92);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 300;
    padding: 16px;
}

.modal.active { display: flex; }

.modal-content {
    background: var(--gravel);
    border: 1.5px solid var(--chalk);
    border-radius: 20px;
    max-width: 480px;
    width: 100%;
    max-height: 82vh;
    overflow-y: auto;
    box-shadow: var(--shadow-card);
}

.modal-content::-webkit-scrollbar { width: 3px; }
.modal-content::-webkit-scrollbar-track { background: transparent; }
.modal-content::-webkit-scrollbar-thumb { background: var(--chalk); border-radius: 2px; }

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px 12px;
}

.modal-header h2 {
    font-family: var(--font-serif);
    font-size: 15px;
    font-weight: 600;
    color: var(--white);
}

.modal-close {
    background: none;
    border: none;
    color: var(--granite);
    cursor: pointer;
    font-size: 20px;
    padding: 0;
    line-height: 1;
    transition: color 0.15s;
}

.modal-close:hover { color: var(--white); }

.modal-divider {
    height: 1px;
    background: var(--chalk);
    margin: 0 20px;
    opacity: 0.3;
}

.modal-body { padding: 12px 20px 20px; }

.cmd-section-label {
    font-family: var(--font-mono);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--chalk);
    margin: 16px 0 4px;
    padding: 0 4px;
}
.cmd-section-label:first-child { margin-top: 4px; }

.command-item {
    margin-bottom: 2px;
    border-radius: 6px;
    overflow: hidden;
}
.command-item:last-child { margin-bottom: 0; }

.command-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px 6px;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.12s;
    user-select: none;
}
.command-trigger:hover { background: rgba(255, 255, 255, 0.04); }

.command-trigger code {
    color: var(--coral);
    font-family: var(--font-mono);
    font-size: 12px;
    background: rgba(217, 119, 87, 0.08);
    padding: 1px 5px;
    border-radius: 3px;
}

.command-chevron {
    color: var(--chalk);
    font-size: 16px;
    line-height: 1;
    flex-shrink: 0;
    margin-left: 8px;
    font-family: var(--font-mono);
    transition: transform 0.15s;
}
.command-item.open .command-chevron { transform: rotate(90deg); }

.command-desc {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.2s ease, padding 0.2s ease;
    padding: 0 6px;
    font-size: 12px;
    color: var(--granite);
    line-height: 1.55;
    font-family: var(--font-serif);
}
.command-desc code {
    color: var(--coral);
    font-family: var(--font-mono);
    font-size: 11px;
    background: rgba(217, 119, 87, 0.08);
    padding: 1px 4px;
    border-radius: 3px;
}
.command-item.open .command-desc {
    max-height: 200px;
    padding: 2px 6px 8px;
}

/* Stats */
.stats-section { margin-bottom: 16px; }
.stats-section:last-child { margin-bottom: 0; }

.stats-section h3 {
    color: var(--coral);
    font-family: var(--font-serif);
    font-size: var(--fs-small);
    font-weight: 600;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2px 0;
}

.stat-label { color: var(--granite); }
.stat-value { color: var(--white); }

.stats-link {
    display: inline-block;
    color: var(--coral);
    text-decoration: underline;
    text-decoration-style: dotted;
    text-underline-offset: 2px;
}

.stats-link:hover { color: var(--white); }

/* ── DOTS MENU POPOVER ───────────────────────────── */

.dots-menu {
    position: absolute;
    top: 52px;
    right: 12px;
    background: var(--gravel);
    border: 1.5px solid var(--chalk);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    z-index: 150;
    display: none;
    flex-direction: column;
    overflow: hidden;
    min-width: 120px;
}

.dots-menu.active { display: flex; }

.dots-menu-item {
    background: none;
    border: none;
    color: var(--white);
    font-family: var(--font-serif);
    font-size: var(--fs);
    font-weight: 400;
    padding: 10px 16px;
    cursor: pointer;
    text-align: left;
    transition: background 0.1s;
}

.dots-menu-item:hover { background: var(--slate); }

/* ── MODEL SELECTOR ──────────────────────────────── */

/* Wrap: shown/hidden as a unit; sizes to the selector card width */
.model-selector-wrap {
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: max-content;
}

.model-selector-wrap.active { display: flex; }

/* Main card — the three model options */
.model-selector {
    display: flex;
    flex-direction: column;
    background: var(--gravel);
    border: 1.5px solid var(--chalk);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    padding: 12px 8px;
    position: relative;
    z-index: 2;
}

/* Others card — same border, tucked behind the main card */
.model-selector-footer {
    background: rgba(48, 48, 46, 0.5);
    border: 1.5px solid var(--chalk);
    border-top: none;
    border-radius: 0 0 20px 20px;
    position: relative;
    z-index: 1;
    margin-top: -16px;
    padding-top: 18px;
    padding-bottom: 2px;
    display: flex;
}

.model-selector-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 3px 8px;
    cursor: pointer;
    border-radius: 12px;
    transition: background 0.1s;
    background: none;
    border: none;
    color: var(--white);
    font-family: var(--font-serif);
    font-size: var(--fs);
    font-weight: 400;
    text-align: left;
}

.model-selector-item:hover { background: var(--slate); }
.model-selector-item img { width: 18px; height: 18px; flex-shrink: 0; }
.model-selector-item .model-version { color: var(--granite); }

.model-selector-item.others {
    color: var(--granite);
    flex: 1;
    justify-content: center;
    margin: 0 4px;
}

/* ── OTHERS PANEL ────────────────────────────────── */

@keyframes selectorSlideOutLeft {
    from { transform: translateX(0);     opacity: 1; }
    to   { transform: translateX(-14px); opacity: 0; }
}

@keyframes selectorSlideInRight {
    from { transform: translateX(14px); opacity: 0; }
    to   { transform: translateX(0);    opacity: 1; }
}

@keyframes selectorSlideOutRight {
    from { transform: translateX(0);    opacity: 1; }
    to   { transform: translateX(14px); opacity: 0; }
}

@keyframes selectorSlideInLeft {
    from { transform: translateX(-14px); opacity: 0; }
    to   { transform: translateX(0);     opacity: 1; }
}

.model-selector-wrap.slide-out {
    animation: selectorSlideOutLeft 0.15s ease forwards;
    pointer-events: none;
}

.model-others-panel {
    display: none;
    flex-direction: column;
    background: var(--gravel);
    border: 1.5px solid var(--chalk);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    padding: 8px;
    width: max-content;
}

.model-others-panel.active {
    display: flex;
    animation: selectorSlideInRight 0.18s ease forwards;
}

.model-others-panel.slide-out {
    animation: selectorSlideOutRight 0.15s ease forwards;
    pointer-events: none;
}

.model-selector-wrap.slide-in {
    animation: selectorSlideInLeft 0.18s ease forwards;
}

.model-others-back {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    color: var(--white);
    font-family: var(--font-serif);
    font-size: var(--fs-small);
    font-weight: 300;
    padding: 0 4px 4px;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.1s;
}

/* Spacer mirrors arrow+gap on the right so "Back" lands at true center */
.model-others-back::after {
    content: '';
    display: inline-block;
    width: 2px; /* adjusted for smaller arrow */
    flex-shrink: 0;
}

.model-others-back:hover { opacity: 0.85; }

/* ── PROFILE SELECTOR (stubbed) ──────────────────── */

.profile-selector {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -60%);
    background: var(--gravel);
    border: 1.5px solid var(--chalk);
    border-radius: 20px;
    box-shadow: var(--shadow-card);
    z-index: 200;
    display: none;
    flex-direction: column;
    padding: 12px;
    min-width: 240px;
}

.profile-selector.active { display: flex; }

.new-instance-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    cursor: pointer;
    border-radius: 14px;
    background: var(--coral-20);
    border: none;
    color: var(--white);
    font-family: var(--font-serif);
    font-size: var(--fs-small);
    text-align: left;
    width: 100%;
    margin-top: 4px;
    transition: background 0.1s;
}

.new-instance-btn:hover { background: var(--coral-15); }

/* ── THINKING BLOCK ──────────────────────────────── */

.thinking-block {
    margin-bottom: 16px;
    max-width: 100%;
    border-radius: 20px;
    border: 1.5px solid var(--coral-50);
    padding: 5px 14px;
}

.thinking-block[open] {
    max-width: calc(100% - 32px);  /* 16px margin on each side within flex-start container */
    padding: 20px 20px 28px;
    margin: 16px 16px 32px;
}

.thinking-block summary {
    cursor: pointer;
    color: var(--white);
    user-select: none;
    list-style: none;
    display: flex;
    align-items: center;
    padding: 0;
    margin: 0;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 400;
    transition: color 0.15s;
    /* Optical compensation: Fira Code renders slightly high and left-heavy */
    padding-top: 1px;
    padding-left: 2px;
    padding-right: 3px;
}

.thinking-block summary::-webkit-details-marker { display: none; }

.thinking-block[open] > summary { display: none; }

.thinking-block summary:hover { color: var(--granite); }

.thinking-content {
    color: var(--white);
    font-family: var(--font-serif);
    font-size: 14px;
    font-weight: 300;
    white-space: pre-wrap;
    word-wrap: break-word;
    line-height: var(--lh);
}

.thinking-content::-webkit-scrollbar { width: 3px; }
.thinking-content::-webkit-scrollbar-track { background: transparent; }
.thinking-content::-webkit-scrollbar-thumb { background: var(--chalk); border-radius: 2px; }

/* ── MOBILE ──────────────────────────────────────── */

@media (max-width: 768px) {
    .app-container { max-width: 100%; }

    .messages-container { padding: 30px 14px 60px; }

    .status-float.expanded { padding: 0 0 14px; }
    .status-float.expanded::before { left: 14px; right: 14px; bottom: 14px; }

    .input-container {
        padding: 16px 18px calc(12px + var(--safe-area-bottom, 0px)) 22px;
        border-radius: 0;
        border-top: 1.5px solid var(--chalk);
        border-left: none;
        border-right: none;
        box-shadow: var(--shadow-input);
    }

    .starting-screen {
        padding: calc(var(--header-h) + 20px) 40px 120px;
    }

    .starting-headline { font-size: 34px; }
    .modal-content { margin: 8px; }
    .status-log-panel.expanded { max-height: calc(100dvh - 120px); }
}

@media (max-width: 400px) {
    .starting-headline { font-size: 32px; }
}

/* ── DESKTOP FRAME ───────────────────────────────── */

.desktop-hint,
.resize-notice {
    display: none;
}

/* ── Normal desktop: phone frame ── */
@media (min-width: 768px) and (min-height: 520px) {
    body {
        background-color: var(--gravel);
        justify-content: center;
        align-items: center;
        padding: 78px 0 32px;
        overflow: auto;
    }

    .app-container {
        /* Phone-like aspect ratio: always 9:19.5. Height drives width. */
        background-color: var(--slate);
        flex-shrink: 0;
        width: auto;
        max-width: 460px;
        height: min(1000px, calc(100dvh - 64px));
        aspect-ratio: 9 / 19.5;
        border: 2.5px solid rgba(235, 233, 228, 0.75);
        border-radius: 34px;
        overflow: hidden;
    }

    /* Push input-container 2px outside each side so its left/right borders
       sit beyond the overflow:hidden boundary and get clipped away cleanly */
    .input-container {
        margin-left: -2px;
        margin-right: -2px;
    }

    /* Sits in flow directly below the container; padding gives equal space
       above and below the text */
    .desktop-hint {
        display: block;
        flex-shrink: 0;
        padding: 12px 0;
        text-align: center;
        font-family: var(--font-serif);
        font-size: 11px;
        font-weight: 300;
        color: rgba(255, 255, 255, 0.2);
        pointer-events: none;
        letter-spacing: 0.02em;
    }
}

/* ── Large monitors: let the phone grow ── */
@media (min-width: 768px) and (min-height: 1100px) {
    .app-container {
        max-width: 560px;
        height: min(1220px, calc(100dvh - 64px));
    }
}

/* ── Very small desktop windows: resize prompt ── */
@media (min-width: 768px) and (max-height: 519px) {
    .app-container,
    .desktop-hint {
        display: none;
    }

    .resize-notice {
        display: block;
        position: fixed;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        font-family: var(--font-serif);
        font-size: 15px;
        font-weight: 300;
        color: rgba(255, 255, 255, 0.5);
        pointer-events: none;
        white-space: nowrap;
    }
}

/* ── ATTACHMENT CHIPS (below user bubble) ──────── */

.attachment-chips {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 6px;
    margin-top: 6px;
    padding: 0 8px;
}

.attachment-chip {
    display: flex;
    align-items: center;
    gap: 5px;
    background: var(--gravel);
    border: 1.5px solid var(--chalk);
    border-radius: 12px;
    padding: 3px 8px 3px 5px;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--granite);
    max-width: 150px;
}

.attachment-chip img {
    width: 18px;
    height: 18px;
    border-radius: 4px;
    object-fit: cover;
    flex-shrink: 0;
}

.attachment-chip .chip-icon {
    color: var(--coral);
    font-size: 11px;
    flex-shrink: 0;
    line-height: 1;
}

.attachment-chip .chip-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ── COPY FLASH (user message right-click / long-press) ── */

.message.user.copy-flash .message-content {
    border-color: var(--coral);
    transition: border-color 0.1s ease;
}

/* ── REDUCED MOTION ──────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}