:root{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.45;--color-brand-primary: #5b8cff;--color-brand-primary-hover: #6f9bff;--color-brand-secondary: #7c4dff;--color-brand-accent: #00e5a8;--color-bg-app: #0b1220;--color-bg-card: #131d32;--color-bg-elevated: #17223a;--color-bg-surface-alt: #1d2943;--color-bg-light: #f8fafc;--color-border-soft: #2d3f63;--color-text-dark: #0b1220;--color-text-primary: #e8eeff;--color-text-secondary: #c9d4f0;--color-text-muted: #91a2c8;--color-white: #ffffff;--color-state-error: #ef4444;--color-state-warning: #f59e0b;--color-state-success: #10b981;--brand-primary: var(--color-brand-primary);--brand-primary-hover: var(--color-brand-primary-hover);--brand-secondary: var(--color-brand-secondary);--brand-accent: var(--color-brand-accent);--bg-app: var(--color-bg-app);--bg-card: var(--color-bg-card);--bg-elevated: var(--color-bg-elevated);--bg-surface-alt: var(--color-bg-surface-alt);--text-primary: var(--color-text-primary);--text-secondary: var(--color-text-secondary);--text-muted: var(--color-text-muted);--border-default: var(--color-border-soft);--gradient-brand: linear-gradient(135deg, #5b8cff 0%, #7c4dff 100%);--gradient-highlight: linear-gradient(135deg, rgba(91, 140, 255, .2) 0%, rgba(124, 77, 255, .22) 100%);--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-7: 1.75rem;--space-8: 2rem;--space-10: 2.5rem;--radius-sm: .625rem;--radius-md: .75rem;--radius-lg: .875rem;--radius-xl: 1rem;--radius-2xl: 1.25rem;--radius-pill: 999px;--shadow-card: 0 14px 34px rgba(2, 8, 23, .3);--shadow-soft: 0 10px 24px rgba(2, 8, 23, .25);--shadow-hover: 0 18px 34px rgba(2, 8, 23, .36);--shadow-focus: 0 0 0 3px rgba(91, 140, 255, .28);--transition-standard: .18s ease;--transition-fast: .15s ease;--transition-slow: .22s ease}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;background:radial-gradient(circle at 5% 10%,rgba(91,140,255,.13),transparent 30%),radial-gradient(circle at 85% 0%,rgba(124,77,255,.14),transparent 38%),var(--bg-app);color:var(--text-primary)}a{color:var(--brand-primary);text-decoration:none;transition:color var(--transition-standard)}a:hover{color:var(--color-white)}h1,h2,h3,h4{color:var(--color-white);letter-spacing:-.02em;margin:0}h1{font-size:clamp(1.9rem,3vw,2.6rem);line-height:1.12}h2{font-size:clamp(1.35rem,2vw,1.85rem)}h3{font-size:1.05rem}p{color:var(--text-secondary);margin:0}button,input,textarea,select{font:inherit}.btn{border:0;border-radius:.8rem;min-height:46px;padding:.75rem 1.2rem;cursor:pointer;font-weight:600;color:var(--color-white);background:var(--gradient-brand);box-shadow:var(--shadow-soft);transition:transform var(--transition-standard),filter var(--transition-standard),box-shadow var(--transition-standard),background var(--transition-standard),border-color var(--transition-standard)}.btn:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:var(--shadow-hover)}.btn:active{transform:translateY(0);filter:brightness(.98)}.btn:focus-visible{outline:none;box-shadow:var(--shadow-focus),var(--shadow-soft)}.btn:disabled{opacity:.58;cursor:not-allowed;transform:none;box-shadow:none}.btn-secondary{background:#1d2943eb;color:var(--text-primary);border:1px solid rgba(148,163,184,.28);box-shadow:none}.btn-secondary:hover{background:#263350f5;border-color:#94a3b875}.btn-ghost{background:transparent;color:var(--text-secondary);border:1px solid transparent;box-shadow:none}.btn-ghost:hover{background:#94a3b81a;color:var(--text-primary);border-color:#94a3b833}.btn-sm{min-height:38px;padding:.4rem .78rem;border-radius:var(--radius-md);font-size:.88rem}.card{background:linear-gradient(180deg,#131d32f5,#131d32eb);border:1px solid rgba(148,163,184,.22);border-radius:var(--radius-2xl);padding:clamp(1.25rem,2vw,1.75rem);margin-bottom:var(--space-5);box-shadow:var(--shadow-card)}.page-shell{max-width:1180px;display:grid;gap:var(--space-6);margin:0 auto}.section-heading-row{display:flex;justify-content:space-between;align-items:flex-end;gap:var(--space-5);flex-wrap:wrap}.eyebrow{color:#b9c8f8;text-transform:uppercase;letter-spacing:.1em;font-size:.73rem;font-weight:700;margin-bottom:var(--space-2)}.auth-page{min-height:100vh;display:grid;gap:var(--space-8);align-content:start;padding:var(--space-8)}.auth-layout{width:min(1180px,100%);display:grid;grid-template-columns:1.3fr minmax(350px,460px);gap:var(--space-8);align-items:start}.landing{border:1px solid rgba(148,163,184,.22);background:linear-gradient(180deg,#131d32cc,#131d32b8);-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);border-radius:1.3rem;padding:clamp(1.3rem,2vw,1.8rem);box-shadow:var(--shadow-card)}.top-nav{display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);margin-bottom:var(--space-7)}.top-nav-links{display:flex;gap:var(--space-4)}.nav-action{color:var(--text-secondary);font-size:.9rem}.brand-row{display:flex;align-items:center;gap:var(--space-3);color:var(--color-white);font-weight:700;margin-bottom:var(--space-5)}.brand-mark{width:34px;height:34px;border-radius:11px;background:var(--gradient-brand);display:inline-block;box-shadow:0 0 36px #5b8cff66}.hero{text-align:left;padding-bottom:var(--space-4)}.hero h1{margin-bottom:var(--space-4)}.lead{max-width:68ch;color:var(--text-muted);margin-bottom:var(--space-6);font-size:1.02rem}.hero-actions{display:flex;flex-wrap:wrap;gap:var(--space-3);margin-bottom:var(--space-6)}.hero-panel{position:relative;overflow:hidden}.hero-panel:before{content:"";position:absolute;inset:0 0 auto;height:2px;background:var(--gradient-brand);opacity:.72}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--space-4)}.feature-item{border:1px solid rgba(148,163,184,.2);border-radius:var(--radius-xl);padding:var(--space-5);background:linear-gradient(180deg,#1d2943cc,#182339a6);transition:border-color var(--transition-standard),transform var(--transition-standard),background var(--transition-standard),box-shadow var(--transition-standard)}.feature-item h3{margin-bottom:var(--space-2)}.feature-item p{color:var(--text-muted)}.feature-item.link-card{display:flex;flex-direction:column;gap:var(--space-2)}.feature-item.link-card:hover{border-color:#5b8cffb3;background:linear-gradient(180deg,#243350db,#1d2943c2);transform:translateY(-3px);box-shadow:var(--shadow-soft)}.card-link{color:#b3c5ff;font-size:.86rem;font-weight:600;margin-top:auto}.footer{color:var(--text-muted);display:flex;gap:var(--space-4);align-items:center;border-top:1px solid rgba(148,163,184,.2);margin-top:var(--space-6);padding-top:var(--space-4);font-size:.9rem;flex-wrap:wrap}.auth-card{width:100%}.auth-card p{color:var(--text-muted);margin-bottom:var(--space-4)}.auth-switch{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:var(--space-2)}.auth-pricing-wrap{width:min(1180px,100%);margin:0 auto}.pricing-section{border:1px solid rgba(148,163,184,.22);border-radius:1.3rem;background:linear-gradient(180deg,#f8fafcfa,#eff6fff7);box-shadow:var(--shadow-card);padding:clamp(1.3rem,2vw,2rem)}.pricing-section h2,.pricing-section h3,.pricing-section h4{color:var(--color-text-dark)}.pricing-headline-wrap{display:grid;gap:var(--space-3);margin-bottom:var(--space-6)}.pricing-headline-wrap .eyebrow{color:#344ea0;margin-bottom:0}.pricing-subheadline{color:#334155;max-width:72ch}.pricing-value-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--space-3);margin-bottom:var(--space-6)}.pricing-value-strip p{margin:0;border:1px solid rgba(91,140,255,.25);border-radius:var(--radius-lg);background:#f8fbff;color:#1e293b;font-weight:600;padding:.8rem 1rem}.pricing-card-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--space-4)}.pricing-card{position:relative;display:grid;gap:var(--space-4);border:1px solid rgba(15,23,42,.12);border-radius:var(--radius-2xl);background:var(--color-white);box-shadow:0 14px 24px #0f172a0f;padding:1.2rem;transition:transform var(--transition-standard),box-shadow var(--transition-standard),border-color var(--transition-standard)}.pricing-card:hover{transform:translateY(-4px);border-color:#5b8cff66;box-shadow:0 18px 34px #0f172a1f}.pricing-card.is-featured{border-color:#5b8cffb3;box-shadow:0 22px 42px #5b8cff33}.pricing-badge{position:absolute;top:-.72rem;left:1rem;color:var(--color-white);font-size:.76rem;font-weight:700;letter-spacing:.02em;border-radius:var(--radius-pill);background:var(--gradient-brand);padding:.25rem .65rem}.pricing-card-header{display:grid;gap:var(--space-2)}.pricing-card-header p{color:#475569;font-size:.88rem}.pricing-card-price{display:flex;align-items:baseline;gap:.4rem}.price-main{color:#0f172a;font-size:2rem;font-weight:800;line-height:1}.price-unit{color:#475569;font-size:.95rem}.pricing-card-description{color:#334155;font-size:.93rem}.pricing-btn{width:100%}.pricing-feature-list{margin:0;padding:0;list-style:none;display:grid;gap:var(--space-2)}.pricing-feature-list li{position:relative;padding-left:1.2rem;color:#334155;font-size:.88rem}.pricing-feature-list li:before{content:"✓";position:absolute;left:0;top:0;color:#2563eb;font-weight:700}.pricing-comparison-note{margin-top:var(--space-5);color:#334155;text-align:center;font-weight:600}.pricing-faq{margin-top:var(--space-6)}.pricing-faq>h3{margin-bottom:var(--space-4)}.pricing-faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-4)}.pricing-faq-item{border:1px solid rgba(15,23,42,.1);border-radius:var(--radius-xl);background:#fff;padding:var(--space-4)}.pricing-faq-item h4{margin-bottom:var(--space-2);font-size:.98rem}.pricing-faq-item p{color:#334155;font-size:.9rem}.app-layout{min-height:100vh;display:grid;grid-template-columns:286px 1fr;background:var(--bg-app)}.mobile-header{display:none}.sidebar{background:linear-gradient(180deg,#0f1a31,#0c1528);color:var(--text-primary);padding:var(--space-6) var(--space-5);border-right:1px solid rgba(148,163,184,.22);display:flex;flex-direction:column;gap:var(--space-4)}.sidebar .brand-row{margin-bottom:var(--space-2)}.sidebar-user-wrap{padding:var(--space-3);border-radius:var(--radius-xl);border:1px solid rgba(148,163,184,.22);background:#1d294394}.sidebar-user-wrap .caption{margin-bottom:var(--space-1)}.sidebar-user{color:var(--text-primary);font-size:.9rem;margin:0;word-break:break-word}.nav-list{display:grid;gap:var(--space-2)}.nav-link{display:block;padding:.72rem .8rem;border-radius:var(--radius-lg);color:var(--text-secondary);border:1px solid transparent;transition:background var(--transition-standard),border-color var(--transition-standard),color var(--transition-standard),transform var(--transition-standard)}.nav-link:hover{background:#1d2943b8;color:var(--text-primary);border-color:#94a3b859;transform:translateY(-1px)}.nav-link.active{background:var(--gradient-highlight);color:var(--color-white);border-color:#5b8cff94}.content{padding:clamp(1.2rem,2.5vw,2rem)}.sidebar-overlay{display:none}.form-grid{display:grid;gap:var(--space-4)}.prompt-form{background:linear-gradient(180deg,#131d32fa,#121c30e6)}label{display:grid;gap:var(--space-2);font-weight:600;color:var(--text-secondary);font-size:.93rem}input,textarea,select{width:100%;border:1px solid rgba(148,163,184,.26);border-radius:var(--radius-md);min-height:46px;padding:.74rem .85rem;background:#1d2943bf;color:var(--text-primary);transition:border-color var(--transition-standard),box-shadow var(--transition-standard),background var(--transition-standard)}input::placeholder,textarea::placeholder{color:#89a0ca}input:focus,textarea:focus,select:focus{outline:none;border-color:#5b8cffcc;box-shadow:var(--shadow-focus);background:#243350c7}textarea{min-height:132px;resize:vertical}.error{color:#ffc3c3;font-weight:600;padding:.6rem .75rem;border:1px solid rgba(239,68,68,.4);background:#ef444429;border-radius:var(--radius-md)}.caption{color:var(--text-muted);font-size:.88rem}.card-header-row{display:flex;justify-content:space-between;align-items:center;gap:var(--space-3)}.result-card{display:grid;gap:var(--space-4)}.chips{display:flex;flex-wrap:wrap;gap:var(--space-2);margin:0 0 var(--space-3)}.chip{border:1px solid rgba(148,163,184,.34);background:#1d2943b8;color:var(--text-secondary);border-radius:var(--radius-pill);padding:.5rem .92rem;cursor:pointer;transition:all var(--transition-standard)}.chip:hover{border-color:#5b8cff8c;color:var(--text-primary)}.chip-active{background:var(--gradient-highlight);border-color:#5b8cff99;color:var(--color-white)}.badge-row{display:flex;flex-wrap:wrap;gap:var(--space-2);margin-bottom:var(--space-2)}.badge{display:inline-flex;align-items:center;border-radius:var(--radius-pill);border:1px solid;padding:.24rem .64rem;font-size:.78rem;font-weight:700}.badge-ai{color:#ddd2ff;border-color:#7c4dff8c;background:#7c4dff33}.badge-success{color:#a7f3d0;border-color:#10b9818c;background:#10b98133}.badge-warning{color:#fcd34d;border-color:#f59e0b94;background:#f59e0b33}.badge-beta{color:#bfdbfe;border-color:#5b8cff8c;background:#5b8cff33}.ai-section{padding:var(--space-4);border:1px solid rgba(148,163,184,.24);border-radius:var(--radius-xl);background:#1d294399}.ai-primary-output{border-color:#5b8cff5c}.ai-section h4{margin-bottom:var(--space-2)}.ai-section ul{margin:var(--space-2) 0 0;padding-left:1.2rem;color:var(--text-secondary)}.code-block{margin-top:var(--space-2);background:#0a1327;border:1px solid rgba(148,163,184,.3);border-radius:var(--radius-xl);padding:var(--space-4);overflow-x:auto;white-space:pre;color:#dbe6ff;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;font-size:.92rem;line-height:1.5}.usage-badge{display:flex;gap:var(--space-3);flex-wrap:wrap;border:1px solid rgba(0,229,168,.32);background:#00e5a817;color:#9af2d8;border-radius:var(--radius-md);padding:.55rem .75rem;font-size:.85rem}.history-list{display:grid;gap:var(--space-4)}.history-card{transition:transform var(--transition-standard),box-shadow var(--transition-standard),border-color var(--transition-standard)}.history-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft);border-color:#5b8cff70}.empty-state{border:1px dashed rgba(148,163,184,.3);background:#11182785;color:var(--text-muted);border-radius:var(--radius-xl);padding:var(--space-8);text-align:center}@media (max-width: 1200px){.pricing-card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width: 1024px){.auth-layout{grid-template-columns:1fr}.auth-card{max-width:620px;justify-self:center}.pricing-value-strip,.pricing-faq-grid{grid-template-columns:1fr}}@media (max-width: 900px){.pricing-card-grid{grid-template-columns:1fr}.app-layout{grid-template-columns:1fr;align-content:start}.mobile-header{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);background:#0f172a;border-bottom:1px solid rgba(148,163,184,.2);padding:var(--space-3) var(--space-4)}.mobile-header .brand-row{margin-bottom:0;font-size:1.1rem}.mobile-menu-toggle{white-space:nowrap}.sidebar-overlay{display:block;position:fixed;top:0;right:0;bottom:0;left:0;border:0;background:#0206178a;z-index:18}.sidebar{position:fixed;top:0;left:0;bottom:0;z-index:20;width:min(86vw,320px);padding:var(--space-4);transform:translate(-100%);transition:transform var(--transition-standard);overflow-y:auto;box-shadow:var(--shadow-soft)}.sidebar .brand-row{display:none}.sidebar.sidebar-open{transform:translate(0)}.content{padding:var(--space-4)}.section-heading-row{align-items:flex-start}}