/* ============================================================
   Clarify — New Chat (ChatGPT/Claude-style assistant)
   Re-skinned onto the suite design system. Layout primitives
   (the persistent sidebar + main column + sticky composer) are
   page-specific, but every surface, control, colour, radius and
   motion comes from suite.css --s-* tokens. Chrome is monochrome
   ink; the only colour on the page is the user's own content
   (message text, code blocks, links inside a reply).

   Canadian spelling throughout. No frameworks, no build step.
   ============================================================ */

.chat-body {
    overflow: hidden;
    height: 100vh;
    background: var(--s-bg);
    font-family: var(--s-font);
}

.chat-layout {
    display: flex;
    height: 100vh;
    background: var(--s-bg);
    color: var(--s-text);
}

/* ============================================================
   Sidebar — past conversations + profile menu
   ============================================================ */
.chat-sidebar {
    width: 280px;
    flex-shrink: 0;
    background: var(--s-surface-2);
    border-right: 1px solid var(--s-border);
    display: flex;
    flex-direction: column;
    transition: margin-left var(--s-t), width var(--s-t);
    position: relative;
    z-index: 20;
}
.chat-sidebar.collapsed { margin-left: -280px; }

.chat-sidebar-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.85rem 0.85rem 0.65rem;
}

/* Home/back affordance — monochrome ink, matches .s-topbar-back language
   but solid-ink so it reads as a real, findable Dashboard link in the
   tinted sidebar rail. */
.chat-home-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    border-radius: var(--s-r-md);
    background: var(--s-accent);
    color: var(--s-on-accent);
    box-shadow: var(--s-shadow-xs);
    transition: background var(--s-t-fast);
}
.chat-home-link svg { width: 18px; height: 18px; stroke: currentColor; }
.chat-home-link:hover { background: var(--s-accent-hover); }
.chat-home-link:active { background: var(--s-accent-press); }

.chat-brand {
    flex: 1;
    font-weight: 800;
    font-size: 0.98rem;
    letter-spacing: -0.02em;
    color: var(--s-text);
}

.chat-sidebar-collapse {
    background: transparent;
    border: 1px solid transparent;
    width: 34px;
    height: 34px;
    border-radius: var(--s-r-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--s-text-3);
    transition: background var(--s-t-fast), color var(--s-t-fast);
}
.chat-sidebar-collapse svg { width: 17px; height: 17px; }
.chat-sidebar-collapse:hover { background: var(--s-surface-3); color: var(--s-text); }

.new-chat-btn {
    margin: 0.15rem 0.85rem 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.55rem;
    background: var(--s-surface);
    border: 1px solid var(--s-border-strong);
    color: var(--s-text);
    padding: 0 0.95rem;
    height: 40px;
    border-radius: var(--s-r-md);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--s-shadow-xs);
    transition: background var(--s-t-fast), border-color var(--s-t-fast),
                box-shadow var(--s-t-fast), transform 0.08s;
}
.new-chat-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.new-chat-btn:hover { background: var(--s-surface-2); border-color: var(--s-text-3); box-shadow: var(--s-shadow-sm); }
.new-chat-btn:active { transform: scale(0.985); }

.conversations-list {
    flex: 1;
    overflow-y: auto;
    padding: 0.15rem 0.55rem 0.85rem;
}
.conversations-empty {
    font-size: 0.78rem;
    color: var(--s-text-3);
    padding: 1rem 0.75rem;
    text-align: center;
}

.conversation-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.7rem;
    border-radius: var(--s-r-sm);
    cursor: pointer;
    color: var(--s-text-2);
    font-size: 0.84rem;
    line-height: 1.3;
    transition: background var(--s-t-fast), color var(--s-t-fast);
    position: relative;
}
.conversation-item:hover { background: var(--s-accent-soft); color: var(--s-text); }
.conversation-item.active { background: var(--s-accent-soft-2); color: var(--s-text); font-weight: 600; }
.conversation-title {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.conversation-actions {
    display: none;
    gap: 0.15rem;
}
.conversation-item:hover .conversation-actions,
.conversation-item.active .conversation-actions {
    display: flex;
}
.conv-action-btn {
    background: transparent;
    border: none;
    width: 26px;
    height: 26px;
    border-radius: var(--s-r-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--s-text-3);
    padding: 0;
    transition: background var(--s-t-fast), color var(--s-t-fast);
}
.conv-action-btn:hover { background: var(--s-border-strong); color: var(--s-text); }

/* ---- Sidebar footer / profile menu ---- */
.chat-sidebar-footer {
    border-top: 1px solid var(--s-border);
    padding: 0.55rem;
    position: relative;
}
.sidebar-profile-btn {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.5rem 0.55rem;
    border-radius: var(--s-r-md);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    font-family: inherit;
    text-align: left;
    transition: background var(--s-t-fast);
}
.sidebar-profile-btn:hover { background: var(--s-accent-soft); }
/* The avatar reuses .s-avatar; size tuned for the rail */
.sidebar-avatar {
    width: 30px;
    height: 30px;
    font-size: 0.72rem;
}
.sidebar-profile-name {
    flex: 1;
    font-size: 0.84rem;
    font-weight: 600;
    color: var(--s-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sidebar-profile-chevron { width: 14px; height: 14px; color: var(--s-text-3); flex-shrink: 0; }

.profile-dropdown {
    position: absolute;
    bottom: calc(100% - 0.1rem);
    left: 0.55rem;
    right: 0.55rem;
    background: var(--s-surface);
    border: 1px solid var(--s-border);
    border-radius: var(--s-r-md);
    box-shadow: var(--s-shadow-md);
    padding: 0.3rem;
    z-index: 50;
}
.profile-menu-item {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    width: 100%;
    padding: 0.55rem 0.65rem;
    border: none;
    background: transparent;
    border-radius: var(--s-r-sm);
    cursor: pointer;
    font-family: inherit;
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--s-text);
    text-align: left;
    transition: background var(--s-t-fast);
}
.profile-menu-item svg { width: 16px; height: 16px; flex-shrink: 0; color: var(--s-text-2); }
.profile-menu-item:hover { background: var(--s-surface-3); }

/* ============================================================
   Main chat column
   ============================================================ */
.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    background: var(--s-bg);
    position: relative;
}

.chat-topbar {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    height: var(--s-topbar-h);
    padding: 0 1.1rem;
    border-bottom: 1px solid var(--s-border);
    background: rgba(255, 255, 255, 0.82);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    backdrop-filter: saturate(180%) blur(14px);
    position: sticky;
    top: 0;
    z-index: 10;
}
.chat-sidebar-toggle {
    background: transparent;
    border: 1px solid transparent;
    width: 36px;
    height: 36px;
    border-radius: var(--s-r-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--s-text-2);
    flex-shrink: 0;
    transition: background var(--s-t-fast), color var(--s-t-fast);
}
.chat-sidebar-toggle svg { width: 18px; height: 18px; }
.chat-sidebar-toggle:hover { background: var(--s-surface-3); color: var(--s-text); }
.chat-topbar-title {
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: -0.01em;
    color: var(--s-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 2rem 1rem 1.5rem;
    scroll-behavior: smooth;
}

/* ---- Welcome / empty state ---- */
.chat-welcome {
    max-width: 760px;
    margin: 14vh auto 0;
    text-align: center;
    animation: chat-fade-up var(--s-t) cubic-bezier(0.2, 0.7, 0.2, 1);
}
.chat-welcome h1 {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    font-weight: 800;
    letter-spacing: -0.025em;
    margin-bottom: 0.5rem;
    color: var(--s-text);
}
.chat-welcome p {
    font-size: 0.98rem;
    color: var(--s-text-2);
}

/* ============================================================
   Messages
   ============================================================ */
.message {
    max-width: 760px;
    margin: 0 auto 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    animation: chat-fade-up var(--s-t-fast) cubic-bezier(0.2, 0.7, 0.2, 1);
}
.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 700;
    margin-top: 0.15rem;
}
/* Both avatars are monochrome ink — chrome carries no hue. The user is
   solid ink; the assistant is a soft-ink ring so the two roles read as
   distinct without introducing a colour. */
.message.user .message-avatar {
    background: var(--s-accent);
    color: var(--s-on-accent);
}
.message.assistant .message-avatar {
    background: var(--s-accent-soft);
    color: var(--s-accent);
    border: 1px solid var(--s-accent-border);
}
.message-content {
    flex: 1;
    min-width: 0;
    color: var(--s-text);
    font-size: 0.96rem;
    line-height: 1.65;
}
.message-content p { margin-bottom: 0.9em; }
.message-content p:last-child { margin-bottom: 0; }
.message-content h1, .message-content h2, .message-content h3 {
    font-weight: 700;
    margin: 1.1em 0 0.5em;
    line-height: 1.3;
    letter-spacing: -0.01em;
    color: var(--s-text);
}
.message-content h1 { font-size: 1.25rem; }
.message-content h2 { font-size: 1.12rem; }
.message-content h3 { font-size: 1.02rem; }
.message-content ul, .message-content ol { margin: 0.4em 0 0.9em 1.4em; }
.message-content li { margin-bottom: 0.35em; }
.message-content code:not(pre code) {
    background: var(--s-surface-3);
    border: 1px solid var(--s-border);
    border-radius: 5px;
    padding: 0.1em 0.35em;
    font-family: var(--s-mono);
    font-size: 0.86em;
    color: var(--s-text);
}
.message-content pre {
    background: #1c1c1e;
    color: #e8e8e8;
    padding: 0.95rem 1rem;
    border-radius: var(--s-r-md);
    overflow-x: auto;
    margin: 0.7em 0;
    font-size: 0.85em;
    line-height: 1.55;
    position: relative;
}
.message-content pre code {
    background: none;
    border: none;
    padding: 0;
    color: inherit;
    font-family: var(--s-mono);
}
.code-copy-btn {
    position: absolute;
    top: 0.55rem;
    right: 0.55rem;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: #d4d4d4;
    padding: 0.25rem 0.55rem;
    border-radius: var(--s-r-sm);
    font-size: 0.72rem;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--s-t-fast), color var(--s-t-fast);
}
.code-copy-btn:hover { background: rgba(255, 255, 255, 0.18); color: #fff; }
.message-content blockquote {
    border-left: 3px solid var(--s-border-strong);
    padding-left: 0.9rem;
    margin: 0.6em 0;
    color: var(--s-text-2);
}
.message-content a {
    color: var(--s-text);
    text-decoration: underline;
    text-decoration-color: var(--s-text-3);
    text-underline-offset: 2px;
    transition: text-decoration-color var(--s-t-fast);
}
.message-content a:hover { text-decoration-color: var(--s-text); }
.message-content table {
    border-collapse: collapse;
    margin: 0.7em 0;
    font-size: 0.88em;
}
.message-content th, .message-content td {
    border: 1px solid var(--s-border);
    padding: 0.45rem 0.7rem;
    text-align: left;
}
.message-content th {
    background: var(--s-surface-2);
    font-weight: 700;
    color: var(--s-text-2);
}
.message-copy-btn {
    margin-top: 0.55rem;
    background: transparent;
    border: 1px solid transparent;
    color: var(--s-text-3);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.28rem 0.6rem;
    border-radius: var(--s-r-sm);
    cursor: pointer;
    transition: border-color var(--s-t-fast), color var(--s-t-fast), background var(--s-t-fast);
}
.message-copy-btn:hover { border-color: var(--s-border-strong); color: var(--s-text); background: var(--s-surface-2); }

/* Typing caret (shown while streaming) */
.typing-cursor {
    display: inline-block;
    width: 7px;
    height: 15px;
    background: var(--s-accent);
    vertical-align: middle;
    margin-left: 2px;
    border-radius: 1px;
    animation: chat-blink 1s steps(1) infinite;
}
@keyframes chat-blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}
@keyframes chat-fade-up {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================================
   Composer
   ============================================================ */
.chat-input-wrap {
    padding: 0.5rem 1rem 1rem;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0) 0%, var(--s-bg) 32%);
}
.chat-input-form {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    background: var(--s-surface);
    border: 1px solid var(--s-border-strong);
    border-radius: var(--s-r-xl);
    padding: 0.6rem 0.65rem 0.6rem 1rem;
    box-shadow: var(--s-shadow-xs);
    transition: border-color var(--s-t-fast), box-shadow var(--s-t-fast);
}
.chat-input-form:focus-within {
    border-color: var(--s-accent);
    box-shadow: 0 0 0 3px var(--s-focus);
}
.chat-input {
    flex: 1;
    border: none;
    outline: none;
    resize: none;
    font-family: inherit;
    font-size: 16px; /* >=16px prevents iOS zoom-on-focus */
    line-height: 1.5;
    color: var(--s-text);
    max-height: 240px;
    background: transparent;
    padding: 0.2rem 0;
}
.chat-input::placeholder { color: var(--s-text-3); }
.chat-send-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: var(--s-accent);
    color: var(--s-on-accent);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background var(--s-t-fast), opacity var(--s-t-fast), transform 0.08s;
}
.chat-send-btn svg { width: 18px; height: 18px; }
.chat-send-btn:hover:not(:disabled) { background: var(--s-accent-hover); }
.chat-send-btn:active:not(:disabled) { background: var(--s-accent-press); transform: scale(0.94); }
.chat-send-btn:disabled { opacity: 0.3; cursor: not-allowed; }
.chat-input-hint {
    max-width: 760px;
    margin: 0.55rem auto 0;
    font-size: 0.72rem;
    color: var(--s-text-3);
    text-align: center;
}

/* ============================================================
   Settings modal — Custom Instructions + Memory
   (suite modal vocabulary; class/ID names preserved for chat.js)
   ============================================================ */
.settings-overlay {
    position: fixed;
    inset: 0;
    background: rgba(20, 20, 24, 0.5);
    -webkit-backdrop-filter: blur(3px);
    backdrop-filter: blur(3px);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    animation: chat-overlay-in var(--s-t) ease;
}
@keyframes chat-overlay-in {
    from { opacity: 0; }
    to { opacity: 1; }
}
.settings-modal {
    background: var(--s-surface);
    border-radius: var(--s-r-xl);
    max-width: 600px;
    width: 100%;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: var(--s-shadow-lg);
    animation: chat-modal-in var(--s-t) cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes chat-modal-in {
    from { opacity: 0; transform: translateY(8px) scale(0.99); }
    to { opacity: 1; transform: none; }
}
.settings-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.1rem 1.4rem;
    border-bottom: 1px solid var(--s-border);
}
.settings-header h2 {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--s-text);
}
/* settings-close also carries .s-icon-btn from suite.css; nothing to add */

.settings-tabs {
    display: flex;
    gap: 0.25rem;
    padding: 0.55rem 1.4rem 0;
    border-bottom: 1px solid var(--s-border);
}
.settings-tab {
    appearance: none;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--s-text-3);
    padding: 0.6rem 0.4rem;
    margin-bottom: -1px;
    cursor: pointer;
    transition: color var(--s-t-fast), border-color var(--s-t-fast);
}
.settings-tab:hover { color: var(--s-text); }
.settings-tab.active { color: var(--s-accent); border-bottom-color: var(--s-accent); }

.settings-body {
    overflow-y: auto;
    padding: 1.4rem;
    flex: 1;
}
.settings-pane { display: none; }
.settings-pane.active { display: block; }

.settings-label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--s-text);
}
.settings-label .settings-hint {
    display: block;
    font-weight: 400;
    font-size: 0.78rem;
    color: var(--s-text-3);
    margin-top: 0.2rem;
    line-height: 1.5;
}
.settings-hint {
    font-size: 0.82rem;
    color: var(--s-text-2);
    line-height: 1.5;
    margin: 0;
}
.settings-textarea {
    width: 100%;
    padding: 0.65rem 0.85rem;
    border: 1px solid var(--s-border-strong);
    border-radius: var(--s-r-md);
    font-family: inherit;
    font-size: 16px; /* >=16px prevents iOS zoom-on-focus */
    line-height: 1.5;
    background: var(--s-surface);
    color: var(--s-text);
    resize: vertical;
    margin-bottom: 1.2rem;
    outline: none;
    transition: border-color var(--s-t-fast), box-shadow var(--s-t-fast);
}
.settings-textarea::placeholder { color: var(--s-text-3); }
.settings-textarea:focus {
    border-color: var(--s-accent);
    box-shadow: 0 0 0 3px var(--s-focus);
}

.settings-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.8rem;
    margin-top: 0.5rem;
}
.settings-save-status {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--s-ok);
    opacity: 0;
    transition: opacity var(--s-t-fast);
}
.settings-save-status.visible { opacity: 1; }
.settings-save-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 40px;
    padding: 0 1.2rem;
    background: var(--s-accent);
    color: var(--s-on-accent);
    border: 1px solid transparent;
    border-radius: var(--s-r-md);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--s-shadow-xs);
    transition: background var(--s-t-fast), box-shadow var(--s-t-fast), transform 0.08s;
}
.settings-save-btn:hover { background: var(--s-accent-hover); box-shadow: var(--s-shadow-sm); }
.settings-save-btn:active { background: var(--s-accent-press); transform: scale(0.975); }
.settings-save-btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

/* ---- Memory tab ---- */
.memory-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.9rem;
    border-bottom: 1px solid var(--s-border);
}
.memory-clear-btn {
    flex-shrink: 0;
    background: transparent;
    border: 1px solid var(--s-border-strong);
    color: var(--s-danger);
    padding: 0 0.85rem;
    height: 34px;
    border-radius: var(--s-r-md);
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--s-t-fast), border-color var(--s-t-fast);
}
.memory-clear-btn:hover { background: var(--s-danger-soft); border-color: var(--s-danger-border); }
.memory-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.memory-item {
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    padding: 0.75rem 0.85rem;
    border: 1px solid var(--s-border);
    border-radius: var(--s-r-md);
    background: var(--s-surface-2);
    transition: border-color var(--s-t-fast);
}
.memory-item:hover { border-color: var(--s-border-strong); }
.memory-item-content {
    flex: 1;
    font-size: 0.88rem;
    color: var(--s-text);
    line-height: 1.5;
}
.memory-item-delete {
    background: transparent;
    border: none;
    width: 26px;
    height: 26px;
    border-radius: var(--s-r-sm);
    color: var(--s-text-3);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background var(--s-t-fast), color var(--s-t-fast);
}
.memory-item-delete svg { width: 14px; height: 14px; }
.memory-item-delete:hover { background: var(--s-danger-soft); color: var(--s-danger); }
.memory-empty {
    font-size: 0.85rem;
    color: var(--s-text-3);
    text-align: center;
    padding: 2rem 1rem;
}

/* ============================================================
   Responsive — usable down to 360px
   ============================================================ */
@media (max-width: 768px) {
    .chat-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        box-shadow: var(--s-shadow-lg);
    }
    .chat-sidebar.collapsed { margin-left: -280px; }
    .chat-messages { padding: 1.2rem 0.9rem; }
    .message { gap: 0.7rem; }
    .chat-input-wrap { padding: 0.4rem 0.75rem 0.9rem; }
    .chat-welcome { margin-top: 10vh; }
    .chat-welcome h1 { font-size: 1.5rem; }
    .settings-modal { max-height: 95vh; }
    .settings-header, .settings-tabs, .settings-body { padding-left: 1.1rem; padding-right: 1.1rem; }
}

@media (max-width: 400px) {
    .chat-sidebar { width: 86vw; }
    .chat-sidebar.collapsed { margin-left: -86vw; }
    .chat-topbar { padding: 0 0.75rem; }
    .chat-input-form { padding: 0.55rem 0.55rem 0.55rem 0.85rem; border-radius: var(--s-r-lg); }
    .message-content { font-size: 0.92rem; }
}

@media (prefers-reduced-motion: reduce) {
    .chat-body *, .chat-welcome, .message, .settings-overlay, .settings-modal {
        animation: none !important;
        transition: none !important;
    }
    .typing-cursor { animation: none !important; }
}