:root{--background: #131313;--surface: #131313;--surface-lowest: #0e0e0e;--surface-low: #1b1b1c;--surface-container: #202020;--surface-high: #2a2a2a;--surface-highest: #353535;--outline: #d8b890;--outline-variant: #5f5146;--on-surface: #fef8f1;--on-surface-variant: #e0caac;--primary: #e0b860;--primary-container: #804820;--secondary: #d8b890;--error: #f5a3a8;--brand-brown: #804820;--brand-brown-dark: #5a2e12;--brand-cream: #fef8f1;--font-body: Geist, Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-code: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;color:var(--on-surface);background:var(--background);font-family:var(--font-body)}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0}button,textarea{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}::-webkit-scrollbar{height:8px;width:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--surface-highest);border-radius:4px}.app-shell{background:var(--background);color:var(--on-surface);display:flex;height:100vh;overflow:hidden}.sidebar{background:#0e0e0ef5;border-right:1px solid rgb(70 69 84 / 70%);display:flex;flex:0 0 260px;flex-direction:column;height:100vh;width:260px}.sidebar-header{border-bottom:1px solid rgb(70 69 84 / 55%);display:grid;gap:14px;padding:14px}.brand{align-items:center;display:flex;gap:10px;min-height:34px}.brand-mark{align-items:center;background:#80482057;border:1px solid rgb(224 184 96 / 35%);border-radius:8px;color:var(--primary);display:inline-flex;height:32px;justify-content:center;width:32px}.brand span:last-child{color:var(--primary);font-size:1.12rem;font-weight:600;letter-spacing:0}.new-chat{align-items:center;background:var(--brand-brown);border:0;border-radius:4px;color:var(--brand-cream);display:flex;font-size:.86rem;font-weight:650;gap:8px;height:36px;justify-content:center;padding:0 12px;width:100%}.primary-nav{display:grid;gap:2px;padding:10px 8px}.nav-item,.profile-button,.history-link{align-items:center;background:transparent;border:0;border-radius:4px;color:var(--on-surface-variant);display:flex;font-size:.9rem;gap:12px;min-height:36px;padding:0 12px;text-align:left;width:100%}.nav-item:hover,.profile-button:hover,.history-link:hover{background:var(--surface-highest);color:var(--on-surface)}.nav-item.active{background:#80482038;border-right:2px solid var(--primary);color:var(--primary)}.chat-history{border-top:1px solid rgb(70 69 84 / 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svg{margin-left:auto}.user-initial{align-items:center;background:#8048206b;border-radius:999px;color:var(--primary);display:inline-flex;font-size:.72rem;font-weight:800;height:28px;justify-content:center;width:28px}.workspace{background:var(--background);display:flex;flex:1;flex-direction:column;height:100vh;min-height:0;min-width:0;overflow:hidden;position:relative}.topbar{align-items:center;background:#131313eb;border-bottom:1px solid rgb(70 69 84 / 72%);display:flex;height:48px;justify-content:space-between;padding:0 12px;z-index:4}.tabs{align-items:center;display:flex;height:100%}.tab,.mobile-menu,.top-actions button{background:transparent;border:0;color:var(--outline)}.tab{align-items:center;border-bottom:1px solid transparent;display:inline-flex;font-family:var(--font-code);font-size:.76rem;height:100%;justify-content:center;padding:0 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a{align-items:center;background:var(--brand-brown);border:0;border-radius:4px;color:var(--brand-cream);display:inline-flex;font-weight:750;justify-content:center;min-height:38px;padding:0 14px}.auth-form button:disabled{background:var(--surface-highest);color:var(--outline);cursor:not-allowed}.auth-links{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between}.auth-links a{color:var(--outline);font-size:.84rem}.auth-state,.auth-placeholder p,.auth-error,.auth-success{font-size:.9rem;line-height:1.5;margin:0 0 14px}.auth-state,.auth-placeholder p{color:var(--on-surface-variant)}.auth-error{color:var(--error)}.auth-success{color:#9fd8a7}.auth-placeholder{display:grid;gap:14px}.chat-canvas{--composer-block: 120px;flex:1;height:calc(100vh - 48px);min-height:0;overflow:hidden;position:relative}.message-list{height:100%;margin:0 auto;max-width:1180px;overflow-y:auto;overscroll-behavior:contain;padding:24px 24px calc(var(--composer-block) + 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textarea::placeholder{color:var(--outline)}.composer-icon,.composer-send{align-items:center;border:0;border-radius:8px;display:inline-flex;height:36px;justify-content:center;width:36px}.composer-icon{background:transparent;color:var(--outline)}.composer-icon:hover{background:var(--surface-highest);color:var(--on-surface)}.composer-send{background:var(--brand-brown);color:var(--brand-cream)}.composer-send:disabled{background:var(--surface-highest);color:var(--outline);cursor:not-allowed}@media(max-width:860px){.app-shell{display:flex;overflow:hidden}.sidebar{display:none}.workspace{height:100vh}.mobile-menu{display:inline-flex}.top-actions a{display:none}.message-list{padding:20px 16px calc(var(--composer-block) + 96px);scroll-padding-bottom:calc(var(--composer-block) + 96px)}.code-block,.starter-prompts{margin-left:0}.composer{bottom:18px;width:calc(100% - 24px)}.chat-status{padding:0 12px}.admin-panel{padding:20px 16px}.admin-header{align-items:flex-start;flex-direction:column}.admin-metrics,.admin-grid,.developer-grid,.admin-user-stats,.admin-user-detail-grid{grid-template-columns:1fr}.admin-modal-backdrop{align-items:stretch;padding:12px}.admin-user-modal{max-height:calc(100vh - 24px)}.admin-user-modal>header,.admin-section-header{align-items:flex-start;flex-direction:column}.admin-user-detail-grid dl div{grid-template-columns:1fr}}@media(max-width:560px){.tab{padding:0 10px}.top-actions{gap:4px}.intro h1{font-size:1.4rem}.message{gap:10px}.assistant-avatar{display:none}.message.user .message-body{max-width:92%}.starter-prompts,.admin-grid dl div{grid-template-columns:1fr}}