:root{--bg: #000;--bg-elevated: #16181c;--border: #2f3336;--text: #e7e9ea;--text-dim: #71767b;--accent: #1d9bf0;--accent-hover: #1a8cd8;--pink: #f91880;--green: #00ba7c;--danger: #f4212e}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Noto Sans JP,sans-serif;font-size:15px;line-height:1.4}a{color:inherit;text-decoration:none}button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}input,textarea{font:inherit;color:var(--text);background:transparent;border:1px solid var(--border);border-radius:8px;padding:10px 12px;outline:none;width:100%}input:focus,textarea:focus{border-color:var(--accent)}.dim{color:var(--text-dim)}.display-name{font-weight:700}.layout{display:grid;grid-template-columns:240px minmax(0,600px) 320px;justify-content:center;min-height:100vh;gap:16px}.sidebar{position:sticky;top:0;height:100vh;display:flex;flex-direction:column;gap:4px;padding:12px 8px}.logo{padding:8px 12px;color:var(--accent);display:flex;width:fit-content}.nav-link{display:flex;align-items:center;gap:14px;padding:10px 12px;border-radius:9999px;font-size:19px;width:fit-content}.nav-link:hover{background:var(--bg-elevated)}.nav-link.active{font-weight:700}.nav-icon{position:relative;display:flex;align-items:center}.nav-badge{position:absolute;top:-6px;right:-10px;background:var(--accent);color:#fff;font-size:11px;font-weight:700;border-radius:9999px;min-width:16px;height:16px;line-height:16px;text-align:center;padding:0 4px}.conversation-row .nav-badge,.sidebar-me .nav-badge{position:static}.sidebar-spacer{flex:1}.sidebar-me{display:flex;align-items:center;gap:8px;padding:8px;border-radius:9999px}.sidebar-me:hover{background:var(--bg-elevated)}.sidebar-me-link{display:flex;align-items:center;gap:10px;flex:1;min-width:0}.sidebar-me-names{display:flex;flex-direction:column;line-height:1.2;min-width:0}.sidebar-login{text-align:center}.main-column{border-left:1px 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18px}.primary-button:hover:not(:disabled){background:var(--accent-hover)}.primary-button:disabled{opacity:.5;cursor:default}.secondary-button{border:1px solid var(--text-dim);font-weight:700;border-radius:9999px;padding:8px 18px}.secondary-button:hover{border-color:var(--danger);color:var(--danger)}.icon-button{font-size:18px;padding:6px 10px;border-radius:9999px}.icon-button:hover:not(:disabled){background:var(--bg-elevated)}.icon-button:disabled{opacity:.4;cursor:default}.form-error{color:var(--danger);font-size:14px;margin:6px 0}.avatar{border-radius:9999px;object-fit:cover;flex-shrink:0;display:block}.avatar-fallback{display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700}.feed-status{padding:32px 16px;text-align:center}.load-more{width:100%;padding:14px;color:var(--accent);border-bottom:1px solid var(--border)}.load-more:hover{background:var(--bg-elevated)}.hashtag{color:var(--accent)}.hashtag:hover{text-decoration:underline}.post-card{padding:12px 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var(--border);padding-top:8px}.char-count{margin-left:auto;color:var(--text-dim);font-size:13px}.char-count.over{color:var(--danger);font-weight:700}.modal-backdrop{position:fixed;inset:0;background:#5b708366;display:flex;justify-content:center;align-items:flex-start;padding-top:8vh;z-index:100}.modal{background:var(--bg);border-radius:16px;width:min(600px,92vw);padding:12px;position:relative}.modal .composer{border-bottom:none}.modal-close{margin-bottom:4px}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.auth-card{width:min(400px,100%);display:flex;flex-direction:column;gap:12px}.auth-logo{font-size:40px}.auth-card h1{font-size:26px;margin:0 0 8px}.auth-card form{display:flex;flex-direction:column;gap:14px}.auth-card label,.settings-form label{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--text-dim)}.search-box 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var(--border);position:sticky;bottom:0;background:var(--bg)}.settings-form{display:flex;flex-direction:column;gap:16px;padding:16px}.image-picker{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--text-dim)}.image-picker img{width:64px;height:64px;object-fit:cover;border-radius:8px}