/* E7A Studio — brand-consistent interface.
 * Source of truth: seleznevna/e7a/src/styles/tokens.css.
 * Keep the token block byte-for-byte aligned with upstream E7A. */
/* E7A design tokens — one system for rhythm, type and composition */

:root {
  /* Color */
  --e7a-bg: #0b0d12;
  --e7a-text: #f5f7fa;
  --e7a-muted: #b8c0cc;
  --e7a-blue: #3b82f6;
  --e7a-balance-point: var(--e7a-blue);
  --e7a-system: var(--e7a-muted);
  --e7a-human: var(--e7a-text);
  --e7a-grid: rgba(245, 247, 250, 0.055);
  --e7a-grid-strong: rgba(245, 247, 250, 0.1);
  --e7a-border: rgba(245, 247, 250, 0.1);

  /* Legacy aliases */
  --e7a-black: var(--e7a-bg);
  --e7a-off-white: var(--e7a-text);
  --e7a-gray: var(--e7a-muted);

  /* Composition */
  --e7a-container: 82rem;
  --e7a-gutter: clamp(1rem, 2.2vw, 2.5rem);
  --e7a-rail: 11rem;
  --e7a-measure-copy: 42rem;
  --e7a-measure-wide: 58rem;
  --e7a-layout-gap: clamp(2rem, 5vw, 5rem);
  --e7a-section-y-sm: clamp(2.75rem, 4vw, 4rem);
  --e7a-section-y: clamp(4rem, 6vw, 6.5rem);
  --e7a-section-y-lg: clamp(5rem, 7vw, 7.5rem);

  /* Spacing */
  --e7a-space-1: 0.25rem;
  --e7a-space-2: 0.5rem;
  --e7a-space-3: 0.75rem;
  --e7a-space-4: 1rem;
  --e7a-space-5: 1.5rem;
  --e7a-space-6: 2rem;
  --e7a-space-7: 2.75rem;
  --e7a-space-8: 4rem;
  --e7a-space-9: 6rem;

  /* Type */
  --e7a-type-logo: clamp(4.5rem, 13vw, 8.75rem);
  --e7a-type-display: clamp(2.7rem, 5vw, 5rem);
  --e7a-type-title: clamp(2rem, 3.7vw, 3.6rem);
  --e7a-type-heading: clamp(1.4rem, 2.3vw, 2.1rem);
  --e7a-type-lead: clamp(1.05rem, 1.35vw, 1.2rem);
  --e7a-type-body: 1rem;
  --e7a-line-display: 0.98;
  --e7a-line-tight: 1.12;
  --e7a-line-body: 1.65;
  --e7a-tracking-system: 0.12em;
  --e7a-tracking-display: -0.045em;
  --e7a-tracking-tight: -0.025em;
  --e7a-tracking-logo: -0.06em;

  /* Motion */
  --e7a-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --e7a-dur-fast: 180ms;
  --e7a-dur: 320ms;
  --e7a-dur-slow: 520ms;
}

:root{
  color-scheme:dark;
  --font-manrope:Manrope;
  --font-jetbrains-mono:"JetBrains Mono";
  font-family:var(--font-manrope),system-ui,sans-serif;
  background:var(--e7a-bg);color:var(--e7a-text);
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--e7a-bg)}
body{margin:0;min-width:280px;min-height:100dvh;background:var(--e7a-bg);color:var(--e7a-text);-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
button:disabled{cursor:not-allowed;opacity:.4}
button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible,summary:focus-visible{outline:2px solid var(--e7a-blue);outline-offset:3px}
a{color:inherit}
.hidden{display:none!important}
.muted{font-size:.78rem;line-height:1.65;color:var(--e7a-muted)}
.eyebrow,.caption,.statusbar,.brand-subtitle,.index-label{font-family:var(--font-jetbrains-mono),ui-monospace,monospace;font-size:.66rem;line-height:1.65;letter-spacing:var(--e7a-tracking-system);text-transform:uppercase}
.eyebrow,.caption,.brand-subtitle,.index-label{color:var(--e7a-muted)}
.eyebrow{margin:0}
.caption{margin:0 0 1rem}
.logo{font-weight:500;letter-spacing:var(--e7a-tracking-logo);font-size:2rem;line-height:1;color:var(--e7a-text);white-space:nowrap}
.logo .digit{position:relative}
.logo .digit::after{content:"";position:absolute;top:.12em;right:-.02em;width:.14em;height:.14em;background:var(--e7a-blue)}
.mark{display:block;width:76px;height:106px;color:var(--e7a-text)}
.mark .mark-node{fill:var(--e7a-blue)}
button.primary,button.secondary,button.link{min-height:42px;padding:.72rem 1.08rem;border-radius:0;transition:background var(--e7a-dur-fast) ease,color var(--e7a-dur-fast) ease,border-color var(--e7a-dur-fast) ease,transform var(--e7a-dur-fast) ease}
button.primary{border:1px solid var(--e7a-blue);background:var(--e7a-blue);color:var(--e7a-bg);font-weight:700}
button.primary:hover:not(:disabled){background:var(--e7a-text);border-color:var(--e7a-text)}
button.secondary{background:transparent;border:1px solid var(--e7a-border);color:var(--e7a-text)}
button.secondary:hover:not(:disabled){border-color:var(--e7a-blue);color:var(--e7a-blue)}
button.link{background:transparent;border:1px solid transparent;color:var(--e7a-muted);padding-inline:0}
button.link:hover{color:var(--e7a-blue)}
input,select,textarea{display:block;width:100%;min-width:0;padding:.78rem .86rem;margin-top:.5rem;background:color-mix(in srgb,var(--e7a-bg) 94%,var(--e7a-text));border:1px solid var(--e7a-border);border-radius:0;color:var(--e7a-text);outline:none}
input::placeholder,textarea::placeholder{color:var(--e7a-muted);opacity:.7}
input:hover,select:hover,textarea:hover{border-color:var(--e7a-grid-strong)}
textarea{resize:vertical;min-height:100px}
.login-outer{min-height:100dvh;display:grid;place-items:center;padding:clamp(1.25rem,4vw,3rem);position:relative;isolation:isolate;overflow:hidden}
.login-outer::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(90deg,var(--e7a-grid) 1px,transparent 1px),linear-gradient(0deg,var(--e7a-grid) 1px,transparent 1px);background-size:72px 72px;mask-image:radial-gradient(ellipse at 70% 45%,#000,transparent 73%)}
.login-card{width:min(480px,100%);padding:clamp(1.5rem,5vw,3rem);border:1px solid var(--e7a-border);background:var(--e7a-bg);position:relative}
.login-card::before{content:"";width:45px;height:1px;background:var(--e7a-blue);position:absolute;top:0;left:0}
.login-top{display:flex;align-items:start;justify-content:space-between;gap:1rem;padding-bottom:2rem}
.login-top .logo{font-size:3rem}
.login-card h1{font-size:clamp(2.1rem,5vw,3.6rem);font-weight:500;letter-spacing:var(--e7a-tracking-display);line-height:var(--e7a-line-display);margin:.85rem 0 1rem}
.login-card label,.edit label{font-size:.77rem;font-weight:550;display:block;margin:1.1rem 0}
.login-card button.primary{width:100%;margin-top:.9rem}
.login-footer{margin-top:2.5rem;padding-top:1rem;border-top:1px solid var(--e7a-border);display:flex;justify-content:space-between;gap:1rem}
.login-footer a{font-family:var(--font-jetbrains-mono),ui-monospace,monospace;color:var(--e7a-muted);font-size:.64rem;text-decoration:none;letter-spacing:.08em}
.login-footer a:hover{color:var(--e7a-blue)}
.error{color:#f58b92;font-size:.77rem;min-height:1.2em}
.shell{display:flex;min-height:100dvh}
.sidebar{width:250px;flex-shrink:0;border-right:1px solid var(--e7a-border);padding:1.5rem 1rem;display:flex;flex-direction:column;gap:.3rem;background:var(--e7a-bg)}
.brand{display:flex;flex-direction:column;align-items:start;gap:.6rem;padding:.5rem .7rem 3rem;text-decoration:none}
.brand .logo{font-size:2.6rem}
.brand strong{font-size:1rem;font-weight:500;letter-spacing:-.02em}
.brand-subtitle{font-size:.58rem}
.sidebar .caption{padding-inline:.7rem}
.sidebar button{width:100%;text-align:left;margin:.2rem 0}
.sidebar .project{background:transparent;border:1px solid transparent;padding:.76rem .7rem;color:var(--e7a-muted);text-align:left;font-size:.78rem;overflow-wrap:anywhere}
.sidebar .project:hover,.sidebar .project.active{border-color:var(--e7a-border);color:var(--e7a-text)}
.sidebar .project.active{border-left-color:var(--e7a-blue)}
.sidebar-bottom{margin-top:auto;padding:2rem .5rem .2rem;overflow-wrap:anywhere;border-top:1px solid var(--e7a-border)}
.sidebar-bottom small{color:var(--e7a-muted);font-size:.72rem}
.sidebar-bottom button{margin-top:1rem}
.shell main{flex:1;min-width:0;display:flex;flex-direction:column}
.header{display:flex;justify-content:space-between;align-items:end;gap:1.5rem;padding:2rem clamp(1rem,3vw,3rem);border-bottom:1px solid var(--e7a-border)}
.header h1{font-weight:500;letter-spacing:var(--e7a-tracking-display);font-size:clamp(1.7rem,3vw,3rem);line-height:1.12;margin:.5rem 0}
.header .muted{margin:0}
.actions{display:flex;flex-wrap:wrap;gap:.6rem}
.actions button{white-space:nowrap}
.content{display:grid;grid-template-columns:220px minmax(250px,1fr) minmax(310px,370px);flex:1;min-height:calc(100dvh - 202px)}
.panel{padding:1.4rem;border-right:1px solid var(--e7a-border);min-width:0}
.panel h2{font-family:var(--font-jetbrains-mono),ui-monospace,monospace;font-size:.7rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;margin:0 0 1.5rem;color:var(--e7a-text)}
.panel .flow{display:block;width:100%;text-align:left;border:1px solid transparent;background:transparent;color:var(--e7a-muted);padding:.8rem .6rem;font-size:.78rem}
.panel .flow.active,.panel .flow:hover{color:var(--e7a-text);border-color:var(--e7a-border);border-left-color:var(--e7a-blue)}
.canvas{background-image:linear-gradient(to right,var(--e7a-grid) 1px,transparent 1px),linear-gradient(to bottom,var(--e7a-grid) 1px,transparent 1px);background-size:48px 48px}
.step{display:block;width:min(310px,100%);margin:1rem auto;padding:1rem;text-align:left;border:1px solid var(--e7a-border);border-left:2px solid var(--e7a-grid-strong);background:var(--e7a-bg);color:var(--e7a-text);transition:border-color var(--e7a-dur-fast)}
.step.active,.step:hover{border-left-color:var(--e7a-blue);border-color:var(--e7a-blue)}
.step strong{display:block;font-size:.79rem;font-weight:600}
.step small{display:block;color:var(--e7a-muted);margin-top:.5rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.edge{text-align:center;font-family:var(--font-jetbrains-mono),ui-monospace,monospace;font-size:.65rem;color:var(--e7a-muted);overflow-wrap:anywhere}
.edit details{border-top:1px solid var(--e7a-border);margin:2rem 0;padding-top:1rem}
.edit summary{font-size:.8rem;cursor:pointer}
.edit details textarea{font: .73rem/1.6 var(--font-jetbrains-mono),ui-monospace,monospace;min-height:180px}
.chat{background:color-mix(in srgb,var(--e7a-bg) 94%,var(--e7a-text));padding:1rem;border:1px solid var(--e7a-border);height:210px;overflow:auto;display:flex;flex-direction:column;gap:.6rem;margin-top:.5rem}
.bubble{padding:.6rem .8rem;border:1px solid var(--e7a-border);background:var(--e7a-bg);font-size:.77rem;line-height:1.5;max-width:90%;align-self:start;white-space:pre-wrap}
.bubble.user{border-color:var(--e7a-blue);color:var(--e7a-text);align-self:end}
.inline{display:flex;gap:.5rem;margin:.7rem 0}
.inline input{margin:0}
.statusbar{display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;padding:1rem clamp(1rem,3vw,3rem);border-top:1px solid var(--e7a-border);color:var(--e7a-muted);letter-spacing:.04em}
.empty{margin:auto;padding:4rem 1.5rem;text-align:center;max-width:35rem}
.empty h2{font-weight:500;font-size:clamp(1.5rem,3vw,2.5rem);letter-spacing:var(--e7a-tracking-display)}
.empty p{color:var(--e7a-muted)}
@media(max-width:1120px){.content{grid-template-columns:200px 1fr}.edit{grid-column:1/-1;border-top:1px solid var(--e7a-border)}.sidebar{width:215px}}
@media(max-width:700px){.shell{display:block}.sidebar{width:100%;padding:1rem;border-right:0;border-bottom:1px solid var(--e7a-border)}.brand{padding:.2rem .3rem 1rem}.sidebar-bottom{margin-top:1rem}.header{padding:1.4rem 1rem;display:block}.actions{margin-top:1.4rem}.content{display:block}.panel{border-bottom:1px solid var(--e7a-border);border-right:0}.statusbar{padding:1rem}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}

.studio-boot{min-height:100dvh;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;text-align:center;background:var(--e7a-bg);color:var(--e7a-text);font-family:var(--font-jetbrains-mono),ui-monospace,monospace;font-size:.78rem;letter-spacing:.12em}
.studio-boot small{color:var(--e7a-muted);font-size:.65rem}