/* MyCrypto — Claude.ai-style light theme: cream bg, terracotta accent, serif AI output. */ * { box-sizing: border-box; } :root { /* surfaces — Claude warm cream palette */ --bg: #faf9f5; --bg-elevated: #ffffff; --bg-sidebar: #f0eee6; --bg-bubble: #ffffff; /* user msg bubble */ --bg-input: #ffffff; --bg-code: #f5f4ed; --bg-card: #ffffff; --bg-hover: rgba(60, 50, 38, 0.05); --bg-active: rgba(204, 120, 92, 0.10); /* text */ --fg: #3d3929; /* warm near-black */ --fg-strong: #1f1e1c; --fg-muted: #6b6859; --fg-faint: #a09c8c; /* lines */ --border: rgba(60, 50, 38, 0.12); --border-strong: rgba(60, 50, 38, 0.22); /* anthropic terracotta accent */ --accent: #cc785c; --accent-hover: #b56849; --accent-fg: #ffffff; --accent-soft: rgba(204, 120, 92, 0.12); /* status */ --ok: #3e8e5a; --warn: #c08a3e; --err: #c54e3c; --link: #5e76a8; /* fonts — Claude uses Tiempos (serif) for AI body, Styrene (sans) for UI. Use Source Serif 4 / Charter as open fallbacks; Chinese chars naturally fall through to PingFang/YaHei (sans) via the cascade. */ --font-serif: 'Source Serif 4', 'Source Serif Pro', Charter, 'Iowan Old Style', 'Iowan', Palatino, 'Cambria', Georgia, 'PingFang SC', 'Microsoft YaHei', 'Noto Serif SC', serif; --font-sans: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, sans-serif; --font-mono: ui-monospace, 'SF Mono', 'JetBrains Mono', Menlo, Consolas, monospace; --safe-top: env(safe-area-inset-top, 0px); --safe-bottom: env(safe-area-inset-bottom, 0px); --safe-left: env(safe-area-inset-left, 0px); --safe-right: env(safe-area-inset-right, 0px); --radius-sm: 6px; --radius-md: 10px; --radius-lg: 14px; --radius-xl: 22px; --shadow-xs: 0 1px 2px rgba(60, 50, 38, 0.05); --shadow-sm: 0 2px 6px rgba(60, 50, 38, 0.06); --shadow-md: 0 6px 20px rgba(60, 50, 38, 0.08); --shadow-lg: 0 16px 40px rgba(60, 50, 38, 0.14); --t-fast: .12s ease; --t-norm: .2s ease; } /* dark theme — toggled via */ :root[data-theme="dark"] { --bg: #262624; --bg-elevated: #30302e; --bg-sidebar: #1f1e1c; --bg-bubble: #3a3937; --bg-input: #3a3937; --bg-code: #1f1e1c; --bg-card: #30302e; --bg-hover: rgba(255, 255, 255, 0.06); --bg-active: rgba(204, 120, 92, 0.20); --fg: #e8e6dc; --fg-strong: #faf9f5; --fg-muted: #a09c8c; --fg-faint: #75716a; --border: rgba(255, 255, 255, 0.10); --border-strong: rgba(255, 255, 255, 0.18); --accent-soft: rgba(204, 120, 92, 0.20); --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.25); --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3); --shadow-md: 0 6px 22px rgba(0, 0, 0, 0.4); --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.55); } html, body { margin: 0; height: 100%; background: var(--bg); color: var(--fg); font: 15px/1.6 var(--font-sans); -webkit-tap-highlight-color: transparent; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility; } button { cursor: pointer; font: inherit; color: inherit; } button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } a { color: var(--link); text-decoration: underline; text-decoration-color: rgba(94, 118, 168, 0.4); text-underline-offset: 2px; } a:hover { text-decoration-color: var(--link); } /* code styles — used both in chat output and timeline */ code { background: var(--bg-code); padding: 2px 6px; border-radius: 4px; font-size: 0.88em; font-family: var(--font-mono); color: var(--fg-strong); } pre { background: var(--bg-code); padding: 14px 16px 14px 16px; border-radius: var(--radius-md); overflow-x: auto; font-size: 13.5px; border: 1px solid var(--border); position: relative; font-family: var(--font-mono); line-height: 1.55; } pre code { background: transparent; padding: 0; font-size: inherit; color: var(--fg-strong); } hr { border: 0; border-top: 1px solid var(--border); margin: 18px 0; } /* copy button on code blocks */ .copy-btn { position: absolute; top: 8px; right: 8px; padding: 4px 10px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: 6px; color: var(--fg-muted); font-family: var(--font-sans); font-size: 11.5px; font-weight: 500; opacity: 0; transition: opacity var(--t-fast), background var(--t-fast), color var(--t-fast); } pre:hover .copy-btn { opacity: 1; } .copy-btn:hover { color: var(--fg-strong); background: var(--bg); } .copy-btn.copied { color: var(--ok); border-color: rgba(62, 142, 90, 0.3); } ::-webkit-scrollbar { width: 10px; height: 10px; } ::-webkit-scrollbar-track { background: transparent; } ::-webkit-scrollbar-thumb { background: rgba(60, 50, 38, 0.16); border-radius: 5px; border: 2px solid transparent; background-clip: padding-box; } ::-webkit-scrollbar-thumb:hover { background: rgba(60, 50, 38, 0.28); background-clip: padding-box; border: 2px solid transparent; } /* ---------- login ---------- */ .login-body { display: grid; place-items: center; height: 100vh; height: 100dvh; padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left); background: radial-gradient(ellipse 90% 60% at 50% 0%, rgba(204, 120, 92, 0.06), transparent 60%), var(--bg); } .login-card { background: var(--bg-elevated); padding: 36px 32px; border-radius: var(--radius-lg); display: flex; flex-direction: column; gap: 14px; min-width: 320px; border: 1px solid var(--border); box-shadow: var(--shadow-md); } .login-card h1 { margin: 0; font-family: var(--font-serif); font-size: 26px; font-weight: 600; letter-spacing: -.01em; color: var(--fg-strong); } .login-card .muted { color: var(--fg-muted); font-size: 13px; margin: -6px 0 6px; } .login-card input { padding: 12px 14px; background: var(--bg); border: 1px solid var(--border); color: var(--fg); border-radius: var(--radius-md); font-size: 16px; transition: border-color var(--t-fast), box-shadow var(--t-fast); } .login-card input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); } .login-card button { padding: 12px; background: var(--accent); border: 0; color: var(--accent-fg); border-radius: var(--radius-md); font-size: 14px; font-weight: 600; transition: background var(--t-fast); } .login-card button:hover { background: var(--accent-hover); } .login-card .error { color: var(--err); font-size: 13px; } /* ---------- layout ---------- */ #app { display: grid; grid-template-columns: 260px 1fr; height: 100vh; height: 100dvh; } /* ---------- sidebar ---------- */ #sidebar { background: var(--bg-sidebar); display: flex; flex-direction: column; overflow: hidden; padding-top: var(--safe-top); padding-left: var(--safe-left); padding-bottom: var(--safe-bottom); border-right: 1px solid var(--border); } .sidebar-head { padding: 14px 12px 8px; } .sidebar-head button { width: 100%; padding: 10px 14px; background: transparent; border: 1px solid var(--border); color: var(--fg); border-radius: var(--radius-md); font-size: 14px; font-weight: 500; text-align: left; display: flex; align-items: center; gap: 10px; transition: background var(--t-fast), border-color var(--t-fast), color var(--t-fast); } .sidebar-head button:hover { background: var(--bg-elevated); border-color: var(--border-strong); color: var(--fg-strong); } .sidebar-head button .plus { font-size: 16px; line-height: 1; opacity: .7; } /* model selector — sidebar between "+ 新对话" and the session list */ .model-bar { position: relative; padding: 0 12px 8px; } .model-toggle { width: 100%; padding: 7px 12px; background: transparent; border: 1px solid var(--border); color: var(--fg); border-radius: var(--radius-md); display: flex; align-items: center; gap: 6px; font-size: 12.5px; cursor: pointer; text-align: left; transition: background var(--t-fast), border-color var(--t-fast), color var(--t-fast); } .model-toggle:hover { background: var(--bg-hover); border-color: var(--border-strong); } .model-toggle .label-pre { color: var(--fg-faint); font-weight: 400; } .model-toggle strong { color: var(--fg-strong); font-weight: 500; flex: 1; } .model-toggle .chevron { font-size: 11px; color: var(--fg-faint); transition: transform .15s ease; flex-shrink: 0; } .model-toggle.open .chevron { transform: rotate(180deg); color: var(--accent); } .model-popover { display: none; position: absolute; top: calc(100% - 4px); left: 12px; right: 12px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-md); z-index: 30; padding: 4px; } .model-popover.open { display: block; animation: fadeIn .12s ease; } .model-opt { width: 100%; background: transparent; border: 0; padding: 8px 10px; border-radius: var(--radius-sm); text-align: left; cursor: pointer; display: flex; flex-direction: column; gap: 2px; transition: background var(--t-fast); } .model-opt:hover { background: var(--bg-hover); } .model-opt.active { background: var(--accent-soft); } .model-opt .model-name { font-size: 13px; color: var(--fg-strong); font-weight: 500; } .model-opt .model-desc { font-size: 11.5px; color: var(--fg-muted); } .model-opt.active .model-name { color: var(--accent); } .model-opt.active::after { content: '✓'; position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--accent); font-size: 13px; font-weight: 700; } .model-opt { position: relative; padding-right: 28px; } #sessionList { list-style: none; margin: 0; padding: 4px 8px; flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; } #sessionList li { padding: 8px 10px; border-radius: var(--radius-sm); cursor: pointer; font-size: 13.5px; color: var(--fg-muted); margin-bottom: 1px; display: flex; align-items: center; gap: 8px; transition: background var(--t-fast), color var(--t-fast); overflow: hidden; } #sessionList li .sess-title { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } #sessionList li:hover { background: var(--bg-hover); color: var(--fg); } #sessionList li.active { background: var(--bg-elevated); color: var(--fg-strong); } #sessionList li .del { opacity: 0.85; color: var(--fg-muted); font-size: 14px; margin-left: auto; padding: 2px 7px; min-width: 26px; min-height: 26px; display: inline-flex; align-items: center; justify-content: center; border-radius: 4px; flex-shrink: 0; background: rgba(60, 50, 38, 0.05); transition: opacity var(--t-fast), color var(--t-fast), background var(--t-fast); } #sessionList li:hover .del { opacity: 1; color: var(--fg); background: rgba(60, 50, 38, 0.1); } #sessionList li.active .del { opacity: 1; color: var(--fg-strong); background: rgba(60, 50, 38, 0.1); } #sessionList li .del:hover { color: var(--err) !important; background: rgba(197, 78, 60, 0.16) !important; opacity: 1; } .sidebar-foot { padding: 10px 12px 14px; display: flex; flex-direction: column; gap: 8px; } .sidebar-foot .foot-row { display: flex; gap: 6px; align-items: stretch; } .sidebar-foot .foot-row button:not(.foot-icon-btn) { flex: 1; } .sidebar-foot button { background: transparent; border: 1px solid transparent; color: var(--fg-muted); padding: 8px 12px; border-radius: var(--radius-md); font-size: 13px; text-align: center; transition: background var(--t-fast), color var(--t-fast); } .sidebar-foot button:hover { background: var(--bg-hover); color: var(--fg); } .foot-icon-btn { width: 36px; flex-shrink: 0; font-size: 15px !important; padding: 8px !important; } .budget { font-size: 11.5px; color: var(--fg-muted); padding: 10px 12px; background: var(--bg-elevated); border-radius: var(--radius-md); border: 1px solid var(--border); line-height: 1.5; } .budget .bar { height: 4px; background: rgba(60, 50, 38, 0.08); border-radius: 2px; margin: 6px 0; overflow: hidden; } .budget .bar > div { height: 100%; background: var(--ok); transition: width .3s ease; border-radius: 2px; } .budget.warn .bar > div { background: var(--warn); } .budget.err .bar > div { background: var(--err); } #scrim { display: none; position: fixed; inset: 0; background: rgba(60, 50, 38, 0.4); z-index: 40; backdrop-filter: blur(3px); -webkit-backdrop-filter: blur(3px); } #scrim.show { display: block; } /* ---------- chat main ---------- */ #chat { display: flex; flex-direction: column; overflow: hidden; min-width: 0; padding-top: var(--safe-top); padding-right: var(--safe-right); background: var(--bg); } #chatHead { padding: 12px 18px; display: flex; align-items: center; gap: 12px; position: relative; background: var(--bg); z-index: 1; } #chatHead h2 { margin: 0; font-family: var(--font-serif); font-size: 18px; font-weight: 600; letter-spacing: -.01em; color: var(--fg-strong); flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; } #hamburger { display: none; background: transparent; border: 0; color: var(--fg); width: 36px; height: 36px; border-radius: var(--radius-md); font-size: 20px; align-items: center; justify-content: center; flex-shrink: 0; transition: background var(--t-fast); } #hamburger:hover { background: var(--bg-hover); } .cap-toggle { background: transparent; border: 1px solid var(--border); color: var(--fg-muted); padding: 5px 12px; border-radius: 999px; cursor: pointer; font-size: 12px; flex-shrink: 0; transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast); } .cap-toggle:hover { background: var(--bg-elevated); color: var(--fg); border-color: var(--border-strong); } .header-icon-btn { background: transparent; border: 0; color: var(--fg-muted); width: 32px; height: 32px; border-radius: var(--radius-sm); font-size: 16px; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; transition: background var(--t-fast), color var(--t-fast); } .header-icon-btn:hover { background: var(--bg-hover); color: var(--fg-strong); } .cap-popover { display: none; position: absolute; top: calc(100% + 6px); right: 18px; z-index: 10; background: var(--bg-elevated); border: 1px solid var(--border); padding: 18px 20px; border-radius: var(--radius-lg); width: min(440px, calc(100vw - 24px)); color: var(--fg); box-shadow: var(--shadow-lg); font-size: 13px; line-height: 1.6; } .cap-popover.open { display: block; animation: fadeIn .14s ease; } .cap-popover strong { font-family: var(--font-sans); font-size: 11.5px; color: var(--fg-muted); display: block; margin-top: 8px; text-transform: uppercase; letter-spacing: .08em; font-weight: 600; } .cap-popover strong:first-child { margin-top: 0; } .cap-popover ul { margin: 6px 0 14px 18px; padding: 0; font-size: 13px; color: var(--fg); } .cap-popover ul:last-child { margin-bottom: 0; } .cap-popover li { margin: 4px 0; } /* ---------- messages: user-right-bubble + assistant-left-naked-serif ---------- */ #messages { flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch; padding: 16px 20px 32px; scroll-behavior: smooth; } .msg-stream { max-width: 740px; margin: 0 auto; display: flex; flex-direction: column; } .msg { margin-bottom: 22px; display: flex; flex-direction: column; animation: fadeUp .22s ease; } .msg.user { align-items: flex-end; } .msg.assistant { align-items: stretch; } /* role labels — visual distinction comes from alignment + bubble vs naked serif */ .msg .role { display: none; } .msg.user .body { background: var(--bg-bubble); padding: 11px 16px; border-radius: 18px; border-bottom-right-radius: 6px; max-width: 80%; white-space: pre-wrap; word-wrap: break-word; overflow-wrap: anywhere; font-family: var(--font-sans); font-size: 15px; line-height: 1.55; color: var(--fg-strong); border: 1px solid var(--border); box-shadow: var(--shadow-xs); } .msg.assistant .body { background: transparent; padding: 4px 2px; word-wrap: break-word; overflow-wrap: anywhere; /* THE Claude reading vibe: serif for AI output */ font-family: var(--font-serif); font-size: 16px; line-height: 1.72; color: var(--fg); letter-spacing: -.005em; } .msg.assistant .body img { max-width: 100%; height: auto; border-radius: var(--radius-md); } .msg .body p { margin: 0.6em 0; } .msg .body p:first-child { margin-top: 0; } .msg .body p:last-child { margin-bottom: 0; } .msg .body h1, .msg .body h2, .msg .body h3 { font-family: var(--font-serif); font-weight: 600; margin: 1.4em 0 .5em; line-height: 1.3; letter-spacing: -.01em; color: var(--fg-strong); } .msg .body h1 { font-size: 1.5em; } .msg .body h2 { font-size: 1.25em; } .msg .body h3 { font-size: 1.08em; } .msg .body ul, .msg .body ol { padding-left: 1.6em; margin: 0.5em 0; } .msg .body li { margin: .35em 0; } .msg .body strong { color: var(--fg-strong); font-weight: 600; } .msg .body em { font-style: italic; } .msg .body blockquote { border-left: 3px solid var(--accent); padding-left: 14px; margin: 1em 0; color: var(--fg-muted); font-style: italic; } .msg .body table { border-collapse: collapse; margin: 1em 0; font-size: .94em; font-family: var(--font-sans); background: var(--bg-elevated); border-radius: var(--radius-md); overflow: hidden; } .msg .body th, .msg .body td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; } .msg .body th { background: var(--bg-code); font-weight: 600; color: var(--fg-strong); } .msg .meta { font-family: var(--font-sans); font-size: 11.5px; color: var(--fg-faint); margin-top: 8px; word-break: break-all; align-self: flex-start; } .msg.user .meta { align-self: flex-end; } .msg.error .body { color: var(--err); } .msg.pending-hint { color: var(--fg-muted); font-size: 13px; padding: 10px 14px; border: 1px dashed var(--border); border-radius: var(--radius-md); background: var(--bg-elevated); align-items: center; flex-direction: row; gap: 8px; } /* typing dots — replaces "正在分析..." text spinner */ .typing-dots { display: inline-flex; gap: 5px; align-items: center; padding: 4px 0; } .typing-dots span { width: 7px; height: 7px; border-radius: 50%; background: var(--fg-faint); animation: typingDot 1.4s infinite ease-in-out both; } .typing-dots span:nth-child(1) { animation-delay: -0.32s; } .typing-dots span:nth-child(2) { animation-delay: -0.16s; } .typing-dots span:nth-child(3) { animation-delay: 0s; } @keyframes typingDot { 0%, 80%, 100% { opacity: 0.3; transform: scale(0.85); } 40% { opacity: 1; transform: scale(1); background: var(--accent); } } /* Claude-style thinking block: collapsible
with summary + content */ .thinking-block { align-self: stretch; margin-bottom: 14px; background: var(--bg-elevated); border: 1px solid var(--border); border-radius: var(--radius-md); font-family: var(--font-sans); font-size: 13px; overflow: hidden; box-shadow: var(--shadow-xs); transition: border-color var(--t-fast); } .thinking-block:hover { border-color: var(--border-strong); } .thinking-block summary { list-style: none; cursor: pointer; padding: 9px 14px; display: flex; align-items: center; gap: 8px; color: var(--fg-muted); user-select: none; font-size: 13px; transition: background var(--t-fast), color var(--t-fast); } .thinking-block summary:hover { background: var(--bg-hover); color: var(--fg); } .thinking-block summary::-webkit-details-marker { display: none; } .thinking-block summary::before { content: '›'; display: inline-block; font-size: 18px; line-height: 1; color: var(--fg-faint); transition: transform .18s ease; width: 12px; text-align: center; } .thinking-block[open] summary::before { transform: rotate(90deg); } .thinking-block summary strong { color: var(--fg); font-weight: 600; } .thinking-block .thinking-icon { color: var(--accent); font-size: 13px; line-height: 1; } .thinking-block .thinking-label { color: var(--fg); font-style: italic; } .thinking-block .thinking-content { padding: 4px 14px 12px 36px; /* indent past the chevron */ border-top: 1px solid var(--border); background: rgba(60, 50, 38, 0.015); max-height: 360px; overflow-y: auto; font-family: var(--font-mono); font-size: 12px; line-height: 1.65; } .thinking-row { padding: 3px 0; display: flex; gap: 10px; align-items: center; color: var(--fg-muted); } .thinking-row.ok { color: var(--ok); } .thinking-row.err { color: var(--err); } .thinking-row.llm { color: var(--accent); } .thinking-row.status { color: var(--fg-muted); font-style: italic; font-family: var(--font-sans); } .thinking-row .name { color: var(--fg-strong); font-weight: 500; } .thinking-row .muted { color: var(--fg-faint); } .url-hints { background: var(--accent-soft); border: 1px solid rgba(204, 120, 92, 0.22); padding: 8px 12px; border-radius: var(--radius-sm); font-size: 12px; margin: 6px 0 8px; word-break: break-all; font-family: var(--font-sans); line-height: 1.6; } .url-hints .h { font-weight: 600; color: var(--accent); margin-bottom: 4px; font-size: 11px; text-transform: uppercase; letter-spacing: .05em; } .url-hints .err { color: var(--err); } /* ---------- composer ---------- */ #composer { padding: 14px 20px calc(18px + var(--safe-bottom)); background: var(--bg); display: flex; flex-direction: column; align-items: center; gap: 8px; } .composer-wrap { width: 100%; max-width: 740px; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: 10px 12px 10px 18px; display: flex; align-items: flex-end; gap: 8px; box-shadow: var(--shadow-sm); transition: border-color var(--t-fast), box-shadow var(--t-fast); } .composer-wrap:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft), var(--shadow-sm); } #composer textarea { flex: 1; resize: none; min-height: 26px; max-height: 200px; background: transparent; color: var(--fg-strong); border: 0; padding: 6px 0; font: inherit; font-family: var(--font-sans); font-size: 16px; line-height: 1.5; outline: none; } #composer textarea::placeholder { color: var(--fg-faint); } #sendBtn { flex-shrink: 0; width: 32px; height: 32px; border-radius: 50%; background: var(--accent); color: var(--accent-fg); border: 0; font-size: 16px; font-weight: 700; display: inline-flex; align-items: center; justify-content: center; transition: background var(--t-fast), transform var(--t-fast), opacity var(--t-fast); } #sendBtn:hover:not(:disabled) { background: var(--accent-hover); } #sendBtn:active:not(:disabled) { transform: scale(.94); } #sendBtn:disabled { background: rgba(60, 50, 38, 0.15); color: var(--fg-faint); cursor: not-allowed; } #sendBtn .arrow { line-height: 1; } #sendBtn .stop-icon { display: none; width: 11px; height: 11px; background: white; border-radius: 2px; } #sendBtn.sending { background: var(--err); cursor: pointer; animation: stopPulse 1.6s ease-in-out infinite; } #sendBtn.sending:hover:not(:disabled) { background: #a23a2c; } #sendBtn.sending .arrow { display: none; } #sendBtn.sending .stop-icon { display: inline-block; } @keyframes stopPulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(197, 78, 60, 0.45); } 50% { box-shadow: 0 0 0 6px rgba(197, 78, 60, 0); } } .composer-hint { font-family: var(--font-sans); font-size: 11px; color: var(--fg-faint); text-align: center; max-width: 740px; width: 100%; } .spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin .9s linear infinite; vertical-align: middle; } .spinner-mini { width: 14px; height: 14px; border: 2px solid rgba(255, 255, 255, 0.4); border-top-color: var(--accent-fg); border-radius: 50%; animation: spin .9s linear infinite; } @keyframes spin { to { transform: rotate(360deg); } } @keyframes fadeUp { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } } @keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } } /* welcome / empty state */ .empty-state { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100%; text-align: center; color: var(--fg-muted); padding: 60px 20px; } .empty-state .greet { font-family: var(--font-serif); font-size: 32px; font-weight: 600; letter-spacing: -.015em; color: var(--fg-strong); margin-bottom: 14px; } .empty-state .greet .accent { color: var(--accent); font-style: italic; } .empty-state .sub { font-size: 14px; max-width: 460px; line-height: 1.6; } /* ---------- mobile (<=720px) ---------- */ @media (max-width: 720px) { #app { grid-template-columns: 1fr; } #sidebar { position: fixed; top: 0; bottom: 0; left: 0; width: min(82vw, 320px); transform: translateX(-100%); transition: transform .22s ease; z-index: 50; box-shadow: var(--shadow-lg); padding-top: var(--safe-top); padding-left: var(--safe-left); padding-bottom: var(--safe-bottom); } #sidebar.open { transform: translateX(0); } #hamburger { display: inline-flex; } #chatHead { padding: 10px 12px; gap: 10px; } #chatHead h2 { font-size: 16px; } .cap-toggle { padding: 4px 10px; font-size: 11.5px; } #messages { padding: 14px 14px 24px; } .msg.user .body { max-width: 88%; font-size: 15px; } .msg.assistant .body { font-size: 16px; line-height: 1.7; } #composer { padding: 10px 12px calc(14px + var(--safe-bottom)); } .composer-wrap { padding: 8px 8px 8px 14px; border-radius: 20px; } #composer textarea { font-size: 16px; } .composer-hint { display: none; } /* delete button always visible on touch (no hover) */ #sessionList li .del { opacity: 0.8; } #sessionList li { padding: 10px 10px; font-size: 14px; } .empty-state .greet { font-size: 26px; } /* always show copy button on mobile (no hover) */ .copy-btn { opacity: 1; } }