:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5;--bg: #0a0a0a;--surface: #141414;--surface-2: #1c1c1c;--border: rgba(255, 255, 255, .08);--border-hover: rgba(255, 255, 255, .15);--text: #fafafa;--text-muted: rgba(255, 255, 255, .5);--text-dim: rgba(255, 255, 255, .35);--accent: #6366f1;--accent-hover: #818cf8;--twitter: #1d9bf0;--linkedin: #0a66c2;--instagram: #e4405f;--threads: #ffffff;--mastodon: #6364ff;--success: #22c55e;--danger: #ef4444;--radius: .75rem;--radius-sm: .5rem}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100vh;background:var(--bg);color:var(--text)}.app{min-height:100vh;display:flex;flex-direction:column}.header{display:flex;align-items:center;justify-content:space-between;padding:1rem 2rem;border-bottom:1px solid var(--border);background:var(--surface);position:sticky;top:0;z-index:10}.logo{display:flex;align-items:center;gap:.5rem;font-size:1.25rem;font-weight:700;letter-spacing:-.03em}.logo-icon{width:28px;height:28px;background:linear-gradient(135deg,var(--accent),#a78bfa);border-radius:8px;display:grid;place-items:center;font-size:.85rem}.header-actions{display:flex;align-items:center;gap:.75rem}.main{flex:1;display:grid;grid-template-columns:1fr 380px;gap:0;max-width:1400px;width:100%;margin:0 auto}@media(max-width:900px){.main{grid-template-columns:1fr}}.composer{padding:2rem;display:flex;flex-direction:column;gap:1.5rem;border-right:1px solid var(--border)}.composer-header{display:flex;align-items:center;justify-content:space-between}.composer-header 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.6rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-family:inherit;font-size:.85rem;outline:none}.datetime-input:focus{border-color:var(--accent)}.publish-section{display:flex;align-items:center;gap:1rem;padding-top:.5rem}.btn-publish{padding:.65rem 2rem;background:var(--accent);color:#fff;border:none;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;font-family:inherit;cursor:pointer;transition:all .15s}.btn-publish:hover:not(:disabled){background:var(--accent-hover);transform:translateY(-1px)}.btn-publish:disabled{opacity:.4;cursor:not-allowed}.btn-draft{padding:.65rem 1.25rem;background:transparent;color:var(--text-muted);border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.85rem;font-family:inherit;cursor:pointer;transition:all .15s}.btn-draft:hover{color:var(--text);border-color:var(--border-hover)}.preview-panel{padding:2rem 1.5rem;overflow-y:auto;max-height:calc(100vh - 56px)}.preview-panel h2{margin:0 0 1.25rem;font-size:1.1rem;font-weight:600}.previews{display:flex;flex-direction:column;gap:1.5rem}.preview-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.preview-card-header{display:flex;align-items:center;justify-content:space-between;padding:.7rem 1rem;border-bottom:1px solid var(--border)}.preview-platform-name{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em}.preview-char-limit{font-size:.7rem;font-family:ui-monospace,monospace;color:var(--text-dim)}.preview-card-body{padding:1rem}.preview-user{display:flex;align-items:center;gap:.6rem;margin-bottom:.75rem}.preview-avatar{width:36px;height:36px;border-radius:50%;background:var(--surface-2);display:grid;place-items:center;font-size:.75rem;font-weight:600;flex-shrink:0}.preview-user-info{display:flex;flex-direction:column}.preview-username{font-size:.85rem;font-weight:600}.preview-handle{font-size:.75rem;color:var(--text-muted)}.preview-text{font-size:.88rem;line-height:1.55;white-space:pre-wrap;word-break:break-word;color:#ffffffe6}.preview-image{margin-top:.75rem;border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border)}.preview-image img{width:100%;display:block}.preview-meta{display:flex;align-items:center;gap:1.25rem;margin-top:.75rem;padding-top:.6rem;border-top:1px solid var(--border)}.preview-meta-item{display:flex;align-items:center;gap:.3rem;font-size:.75rem;color:var(--text-dim)}.toast{position:fixed;bottom:2rem;left:50%;transform:translate(-50%);padding:.75rem 1.5rem;background:var(--success);color:#fff;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;z-index:100;animation:toast-in .3s ease,toast-out .3s ease 2s forwards;box-shadow:0 8px 24px #0006}@keyframes toast-in{0%{opacity:0;transform:translate(-50%) translateY(20px)}to{opacity:1;transform:translate(-50%) translateY(0)}}@keyframes toast-out{0%{opacity:1;transform:translate(-50%) translateY(0)}to{opacity:0;transform:translate(-50%) translateY(20px)}}.history-section{margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border)}.history-section h3{margin:0 0 .75rem;font-size:.8rem;font-weight:500;text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted)}.history-list{display:flex;flex-direction:column;gap:.5rem}.history-item{display:flex;align-items:flex-start;gap:.75rem;padding:.75rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;transition:all .15s}.history-item:hover{border-color:var(--border-hover)}.history-text{flex:1;font-size:.82rem;color:var(--text-muted);overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}.history-time{font-size:.7rem;color:var(--text-dim);white-space:nowrap}.history-platforms{display:flex;gap:.25rem}.history-platform-dot{width:6px;height:6px;border-radius:50%}.empty-preview{text-align:center;padding:3rem 1rem;color:var(--text-dim);font-size:.9rem}.empty-preview-icon{font-size:2.5rem;margin-bottom:.75rem;opacity:.3}