/* ════════════════════════════════════════════════════════════
   CASE STUDY — Inbox Agent (Web · SEO · GEO · Outlook AI)
   Shared styles for case-study-inbox-agent.html (SR) and -en.html
   Base layout mirrors case-study-bellvet.html
════════════════════════════════════════════════════════════ */

:root {
  --bg-deep: #060a1c;
  --bg-base: #03080f;
  --bg-card: rgba(13,27,62,0.7);
  --blue: #4a6cf7;
  --blue-bright: #2979ff;
  --cyan: #00c8ff;
  --cyan-hot: #00d4ff;
  --sky: #7dd3fc;
  --silver: #b8bcd0;
  --slate: #94a3b8;
  --muted: #5a6080;
  --text: #e8eaf0;
  --gradient: linear-gradient(135deg, #4a6cf7, #00c8ff);
  --border: rgba(74,108,247,0.12);
  --border-hi: rgba(74,108,247,0.28);
  --max: 1160px;
  --ease: cubic-bezier(.22,.8,.26,1);
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
[hidden]{display:none!important}
body{background:var(--bg-deep);color:var(--text);font-family:'Outfit',sans-serif;overflow-x:hidden;-webkit-font-smoothing:antialiased;line-height:1.6}
a:focus-visible,button:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ── AMBIENT ─────────────────────────────────────────────── */
.progress{position:fixed;top:0;left:0;height:2px;background:var(--gradient);z-index:9999;width:0%;transition:width .05s linear}
.noise{position:fixed;inset:0;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.03'/%3E%3C/svg%3E");pointer-events:none;z-index:1;opacity:.35}
#constellation{position:fixed;top:0;left:0;width:100%;height:100%;z-index:0;pointer-events:none}
.cursor-glow{position:fixed;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(74,108,247,.07) 0%,transparent 70%);pointer-events:none;z-index:1;transform:translate(-50%,-50%);transition:left .08s ease,top .08s ease}

/* ── NAV ─────────────────────────────────────────────────── */
nav{position:fixed;top:0;left:0;right:0;z-index:100;padding:20px 48px;display:flex;align-items:center;justify-content:space-between;gap:16px;background:rgba(6,10,28,.85);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid rgba(74,108,247,.07);transition:padding .3s}
nav.small{padding:13px 48px}
.nav-back{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--silver);font-size:14px;transition:color .2s}
.nav-back:hover{color:var(--text)}
.nav-back svg{width:15px;height:15px}
.nav-center{font-family:'Space Mono',monospace;font-size:11px;letter-spacing:3px;text-transform:uppercase;color:var(--muted)}
.nav-right{display:flex;align-items:center;gap:14px}
.nav-lang{font-family:'Space Mono',monospace;font-size:11px;letter-spacing:2px;color:var(--muted);text-decoration:none;padding:6px 10px;border:1px solid rgba(255,255,255,.08);border-radius:6px;transition:color .2s,border-color .2s}
.nav-lang:hover{color:var(--text);border-color:var(--border-hi)}
.nav-cta{padding:10px 22px;background:var(--gradient);color:#fff;text-decoration:none;border-radius:8px;font-family:'Sora',sans-serif;font-size:13px;font-weight:600;transition:transform .2s,opacity .2s}
.nav-cta:hover{transform:translateY(-1px);opacity:.9}

/* ── HERO ────────────────────────────────────────────────── */
.hero{min-height:100vh;padding:160px 48px 100px;position:relative;z-index:2;max-width:var(--max);margin:0 auto;display:flex;flex-direction:column;justify-content:center}
.hero-glow{position:absolute;top:10%;right:-15%;width:640px;height:640px;border-radius:50%;background:radial-gradient(circle,rgba(74,108,247,.055) 0%,transparent 70%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1fr 380px;gap:72px;align-items:center}
.tag{display:inline-flex;align-items:center;gap:8px;font-family:'Space Mono',monospace;font-size:11px;letter-spacing:4px;text-transform:uppercase;color:var(--blue);margin-bottom:24px}
.tag-dot{width:6px;height:6px;border-radius:50%;background:var(--blue);box-shadow:0 0 8px var(--blue)}
h1{font-family:'Sora',sans-serif;font-size:clamp(34px,4.8vw,62px);font-weight:800;line-height:1.06;letter-spacing:-2px;margin-bottom:24px}
.g{background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:17px;font-weight:300;color:var(--silver);max-width:520px;line-height:1.75;margin-bottom:40px}
.hero-meta{display:flex;flex-wrap:wrap;gap:28px;padding-top:28px;border-top:1px solid rgba(255,255,255,.06);margin-bottom:40px}
.mi-label{font-family:'Space Mono',monospace;font-size:10px;letter-spacing:3px;text-transform:uppercase;color:var(--muted);margin-bottom:5px}
.mi-val{font-family:'Sora',sans-serif;font-size:13px;font-weight:600}
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 34px;background:var(--gradient);color:#fff;text-decoration:none;border-radius:10px;font-family:'Sora',sans-serif;font-size:15px;font-weight:600;transition:transform .3s,box-shadow .3s;position:relative;border:0;cursor:pointer}
.btn:hover{transform:translateY(-2px);box-shadow:0 16px 48px rgba(74,108,247,.25)}
.btn svg{width:15px;height:15px}

.result-card{background:linear-gradient(145deg,rgba(13,27,62,.85),rgba(6,10,28,.95));border:1px solid var(--border);border-radius:20px;padding:38px 34px;position:relative;overflow:hidden}
.result-card::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:var(--gradient);opacity:.6}
.rc-label{font-family:'Space Mono',monospace;font-size:10px;letter-spacing:3px;text-transform:uppercase;color:var(--muted);margin-bottom:28px}
.rc-stat{margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid rgba(255,255,255,.05)}
.rc-stat:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}
.rc-num{font-family:'Sora',sans-serif;font-size:50px;font-weight:800;letter-spacing:-2px;line-height:1;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:5px}
.rc-desc{font-size:13px;color:var(--silver);line-height:1.5}

/* ── SECTIONS ────────────────────────────────────────────── */
.div{height:1px;background:linear-gradient(90deg,transparent,rgba(74,108,247,.14),transparent);max-width:var(--max);margin:0 auto;position:relative;z-index:2}
.section{padding:96px 48px;position:relative;z-index:2;max-width:var(--max);margin:0 auto}
.sec-tag{font-family:'Space Mono',monospace;font-size:11px;letter-spacing:4px;text-transform:uppercase;color:var(--blue);margin-bottom:16px;display:flex;align-items:center;gap:12px}
.sec-tag::before{content:'';width:22px;height:1px;background:var(--blue)}
h2{font-family:'Sora',sans-serif;font-size:clamp(26px,3.4vw,42px);font-weight:700;letter-spacing:-1.5px;line-height:1.1;margin-bottom:16px}
.lead{font-size:17px;color:var(--silver);max-width:640px;line-height:1.75}

/* Problem */
.prob-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:56px}
.prob-card{background:linear-gradient(145deg,rgba(13,27,62,.6),rgba(6,10,28,.9));border:1px solid rgba(148,163,184,.12);border-radius:16px;padding:32px 28px}
.prob-ico{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:rgba(148,163,184,.08);border:1px solid rgba(148,163,184,.16);color:var(--slate);margin-bottom:20px}
.prob-ico svg{width:20px;height:20px}
.prob-title{font-family:'Sora',sans-serif;font-size:17px;font-weight:700;margin-bottom:10px;line-height:1.3}
.prob-text{font-size:14px;color:var(--silver);line-height:1.65;margin-bottom:18px}
.prob-list{list-style:none;display:flex;flex-direction:column;gap:9px}
.prob-list li{font-size:13px;color:var(--slate);line-height:1.5;padding-left:16px;position:relative}
.prob-list li::before{content:'✕';position:absolute;left:0;top:0;font-size:10px;color:var(--muted)}

/* Solution — 4 pillars */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:56px;position:relative}
.flow-line{position:absolute;top:44px;left:calc(12.5% + 8px);right:calc(12.5% + 8px);height:1px;background:linear-gradient(90deg,rgba(74,108,247,.25),rgba(0,200,255,.25));pointer-events:none}
.fnode{display:flex;flex-direction:column;align-items:center;text-align:center;position:relative;z-index:1}
.fnode-icon{width:88px;height:88px;border-radius:20px;background:linear-gradient(145deg,rgba(13,27,62,.9),rgba(6,10,28,.95));border:1px solid rgba(74,108,247,.18);display:flex;align-items:center;justify-content:center;color:var(--sky);margin-bottom:16px;transition:border-color .3s,box-shadow .3s}
.fnode-icon svg{width:30px;height:30px}
.fnode:hover .fnode-icon{border-color:rgba(74,108,247,.4);box-shadow:0 0 24px rgba(74,108,247,.1)}
.fnode.hot .fnode-icon{border-color:rgba(0,200,255,.4);box-shadow:0 0 28px rgba(0,200,255,.12)}
.fnode-title{font-family:'Sora',sans-serif;font-size:14px;font-weight:700;margin-bottom:6px}
.fnode-desc{font-size:12px;color:var(--slate);line-height:1.55;max-width:220px}

/* Agent demo section (the widget itself lives in inbox-demo.css) */
.agent-sec{max-width:1280px}

/* Outcome */
.outcome{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px}
.oc{padding:28px 26px;border-radius:16px;border:1px solid var(--border);background:linear-gradient(145deg,rgba(13,27,62,.6),rgba(6,10,28,.9))}
.oc svg{width:22px;height:22px;color:var(--cyan);margin-bottom:16px}
.oc-t{font-family:'Sora',sans-serif;font-size:16px;font-weight:600;margin-bottom:8px;line-height:1.35}
.oc-x{font-size:13.5px;color:var(--silver);line-height:1.6}
.outcome-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;margin-top:40px;padding-top:28px;border-top:1px solid rgba(255,255,255,.06)}
.outcome-foot p{font-size:14px;color:var(--silver);max-width:520px}
.outcome-foot a.link{color:var(--sky);text-decoration:none}
.outcome-foot a.link:hover{text-decoration:underline}

footer{padding:36px 48px;display:flex;align-items:center;justify-content:space-between;border-top:1px solid rgba(255,255,255,.04);position:relative;z-index:2;max-width:calc(var(--max) + 96px);margin:0 auto}
.foot-brand{font-family:'Sora',sans-serif;font-size:13px;font-weight:600;color:var(--muted)}
.foot-back{font-family:'Space Mono',monospace;font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);text-decoration:none;transition:color .2s}
.foot-back:hover{color:var(--blue)}
.foot-links{display:flex;gap:20px;list-style:none}
.foot-links a{font-family:'Space Mono',monospace;font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);text-decoration:none;transition:color .2s}
.foot-links a:hover{color:var(--blue)}

/* Reveal */
.reveal{opacity:0;transform:translateY(36px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}
.d1{transition-delay:.1s}.d2{transition-delay:.2s}.d3{transition-delay:.3s}

/* ── RESPONSIVE ──────────────────────────────────────────── */
@media(max-width:1024px){
  .outcome{grid-template-columns:1fr}
  .hero{padding:140px 32px 80px}
  .section{padding:76px 32px}
  .hero-grid{grid-template-columns:1fr;gap:48px}
  .hero-glow{display:none}
  .prob-grid{grid-template-columns:1fr}
  .flow{grid-template-columns:repeat(2,1fr);gap:28px}
  .flow-line{display:none}
}
@media(max-width:768px){
  nav{padding:15px 20px}
  nav.small{padding:11px 20px}
  .nav-center{display:none}
  .nav-cta{padding:9px 14px;font-size:12px}
  .hero{padding:118px 20px 60px}
  .section{padding:60px 20px}
  .flow{grid-template-columns:1fr}
  .btn{width:100%;text-align:center;justify-content:center}
  footer{flex-direction:column;gap:14px;text-align:center}
  .foot-links{justify-content:center}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;transition-delay:0s!important}
  .cursor-glow{display:none}
}