:root{--bg: #020617;--bg-elevated: #020617;--bg-header: #020617;--bg-footer: #020617;--border-subtle: #111827;--text-primary: #f9fafb;--text-secondary: #9ca3af;--accent: #14b8a6;--accent-hover: #0d9488;--radius-lg: 16px}*,*:before,*:after{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background-color:var(--bg);color:var(--text-primary)}a{color:inherit;text-decoration:none}button{font:inherit}.app-root{min-height:100vh;display:flex;flex-direction:column}.app-header{position:sticky;top:0;z-index:50;background-color:var(--bg-header);border-bottom:1px solid var(--border-subtle);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.app-header-inner{max-width:1200px;margin:0 auto;padding:.75rem 1.5rem;display:flex;align-items:center;justify-content:space-between}.app-logo{display:inline-flex;align-items:center;gap:.5rem}.app-logo 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var(--border-subtle)}.profile-section-title{font-size:1rem;font-weight:600;margin-bottom:.5rem}.profile-section{margin-bottom:1.5rem}.chat-page{max-width:920px}.chat-card{margin-top:1.5rem;border-radius:20px;border:1px solid var(--border-subtle);background:radial-gradient(circle at top left,#020617,#020617);display:flex;flex-direction:column;height:60vh;max-height:640px}.chat-card-body{flex:1;padding:.75rem;overflow-y:auto}.chat-messages{display:flex;flex-direction:column;gap:.5rem}.chat-empty{font-size:.9rem;color:var(--text-secondary)}.chat-message{display:flex}.chat-message--me{justify-content:flex-end}.chat-message--them{justify-content:flex-start}.chat-message-bubble{max-width:75%;border-radius:16px;padding:.5rem .75rem;background:#0f172a;border:1px solid rgba(148,163,184,.3);font-size:.9rem}.chat-message--me 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