/* ============================================================
   Carolina Vier — Portfolio site
   Design system: bold gradient "cover" cards (echoing the
   LinkedIn article covers), geometric display type, mono labels.
   ============================================================ */
:root{
  --ink:#0e0a24;        /* deep indigo-black base */
  --ink-2:#171036;
  --paper:#ffffff;
  --surface:#f6f5fb;
  --line:#e7e4f1;
  --muted:#615c7a;
  --muted-2:#8b86a6;

  --magenta:#ff1d83;
  --orange:#ff5a1f;
  --cyan:#16c2e8;
  --violet:#7b2ff7;
  --blue:#1366d6;
  --green:#12c08a;
  --lime:#d8ff36;
  --yellow:#ffd60a;

  --grad-fire:linear-gradient(120deg,#ff5a1f 0%,#ff1d83 55%,#c81fd6 100%);
  --grad-night:linear-gradient(120deg,#2a0e5a 0%,#7b2ff7 55%,#ff1d83 100%);
  --grad-ocean:linear-gradient(120deg,#0a3aa0 0%,#1366d6 45%,#12c08a 100%);
  --grad-cyan:linear-gradient(120deg,#1a1145 0%,#3b1d8f 50%,#16c2e8 100%);

  --r:18px;
  --maxw:1080px;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',system-ui,sans-serif;
  color:var(--ink);background:var(--paper);
  line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- type ---------- */
.display{font-family:'Space Grotesk',sans-serif;font-weight:700;line-height:1.04;letter-spacing:-.02em}
.eyebrow{font-family:'Space Mono',monospace;font-size:.7rem;letter-spacing:.18em;text-transform:uppercase}
h1,h2,h3{font-family:'Space Grotesk',sans-serif;font-weight:700;line-height:1.08;letter-spacing:-.02em}
h2{font-size:clamp(1.7rem,3.6vw,2.6rem)}
h3{font-size:1.3rem}
p{color:#2c2740}
.lead{font-size:1.12rem;color:var(--muted)}

/* ---------- nav ---------- */
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);
  backdrop-filter:saturate(160%) blur(12px);border-bottom:1px solid var(--line)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:24px}
.brand{font-family:'Space Grotesk',sans-serif;font-weight:700;letter-spacing:-.02em;font-size:1.05rem}
.brand b{background:var(--grad-fire);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{margin-left:auto;display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.nav-links a{font-size:.9rem;color:var(--muted);padding:8px 12px;border-radius:10px;transition:.15s var(--ease)}
.nav-links a:hover{color:var(--ink);background:var(--surface)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-cta{background:var(--ink);color:#fff!important;font-weight:600;border-radius:11px}
.nav-cta:hover{background:var(--ink-2)!important;color:#fff}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:10px;padding:8px 12px;font-size:1rem;cursor:pointer}

/* ---------- hero ---------- */
.hero{background:var(--ink);color:#fff;position:relative;overflow:hidden;padding:84px 0 72px}
.hero::before{content:"";position:absolute;inset:0;
  background:radial-gradient(900px 380px at 78% -10%,rgba(255,29,131,.42),transparent 60%),
             radial-gradient(680px 340px at 8% 120%,rgba(22,194,232,.30),transparent 60%);
  pointer-events:none}
.hero .wrap{position:relative}
.hero .eyebrow{color:var(--lime)}
.hero h1{font-size:clamp(2.3rem,6vw,4.2rem);margin:16px 0 14px;max-width:16ch}
.hero h1 .g{background:var(--grad-fire);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:rgba(255,255,255,.74);font-size:1.12rem;max-width:60ch}
.hero-cta{margin-top:28px;display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:.95rem;
  padding:12px 20px;border-radius:12px;cursor:pointer;border:none;transition:.18s var(--ease);font-family:inherit}
.btn-fire{background:var(--grad-fire);color:#fff}
.btn-fire:hover{filter:brightness(1.07);transform:translateY(-1px)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.22)}
.btn-ghost:hover{background:rgba(255,255,255,.16)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:var(--ink-2);transform:translateY(-1px)}

/* stat chips */
.stat-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:40px}
.chip{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:16px 18px;min-width:150px}
.chip .n{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:1.7rem;letter-spacing:-.02em}
.chip .l{font-size:.78rem;color:rgba(255,255,255,.62);margin-top:2px}
.chip .n.fire{background:var(--grad-fire);-webkit-background-clip:text;background-clip:text;color:transparent}
.chip .n.cy{color:var(--cyan)} .chip .n.lm{color:var(--lime)}

/* ---------- sections ---------- */
section.band{padding:72px 0}
section.band.alt{background:var(--surface)}
.sec-head{max-width:62ch;margin-bottom:34px}
.sec-head .eyebrow{color:var(--magenta)}
.sec-head h2{margin-top:10px}
.sec-head p{margin-top:12px;color:var(--muted)}

/* ---------- cover card (signature) ---------- */
.cover{border-radius:var(--r);color:#fff;padding:30px 30px 26px;position:relative;overflow:hidden;
  min-height:220px;display:flex;flex-direction:column;justify-content:flex-end}
.cover.fire{background:var(--grad-fire)} .cover.night{background:var(--grad-night)}
.cover.ocean{background:var(--grad-ocean)} .cover.cyan{background:var(--grad-cyan)}
.cover .kick{font-family:'Space Mono',monospace;font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.82)}
.cover .big{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:clamp(1.5rem,2.6vw,2.1rem);margin-top:auto;line-height:1.1}
.cover .big .y{color:var(--lime)} .cover .big .w{color:#fff}
.cover .tags{margin-top:14px;font-family:'Space Mono',monospace;font-size:.66rem;color:rgba(255,255,255,.8)}

/* work grid */
.work-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:20px}
.work-card{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:.2s var(--ease);display:flex;flex-direction:column}
.work-card:hover{transform:translateY(-4px);box-shadow:0 18px 40px rgba(14,10,36,.12);border-color:transparent}
.work-card .cover{min-height:170px;border-radius:0}
.work-card .body{padding:20px 22px 22px;flex:1;display:flex;flex-direction:column}
.work-card h3{font-size:1.18rem;margin-bottom:8px}
.work-card p{color:var(--muted);font-size:.95rem;flex:1}
.work-card .go{margin-top:14px;font-family:'Space Mono',monospace;font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--magenta)}

/* case study detail */
.case{padding:0 0 80px}
.case-hero{color:#fff;padding:74px 0 56px;position:relative;overflow:hidden}
.case-hero.fire{background:var(--grad-fire)} .case-hero.night{background:var(--grad-night)}
.case-hero.ocean{background:var(--grad-ocean)} .case-hero.cyan{background:var(--grad-cyan)}
.case-hero .eyebrow{color:rgba(255,255,255,.9)}
.case-hero h1{font-size:clamp(2rem,4.6vw,3.1rem);margin:14px 0 12px;max-width:20ch}
.case-hero p{color:rgba(255,255,255,.9);max-width:60ch;font-size:1.08rem}
.case-meta{display:flex;gap:26px;flex-wrap:wrap;margin-top:26px;font-size:.9rem}
.case-meta div span{display:block;font-family:'Space Mono',monospace;font-size:.62rem;letter-spacing:.14em;text-transform:uppercase;color:rgba(255,255,255,.7);margin-bottom:3px}
.case-body{max-width:760px;margin:0 auto;padding:54px 24px 0}
.case-body h2{font-size:1.5rem;margin:36px 0 12px}
.case-body p{margin-bottom:16px;color:#2c2740}
.case-body ul{margin:0 0 16px 0;padding-left:0;list-style:none}
.case-body li{position:relative;padding-left:26px;margin-bottom:10px;color:#2c2740}
.case-body li::before{content:"";position:absolute;left:6px;top:11px;width:8px;height:8px;border-radius:50%;background:var(--grad-fire)}
.metrics{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:14px;margin:24px 0 8px}
.metric{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px}
.metric .n{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:1.7rem;letter-spacing:-.02em;
  background:var(--grad-night);-webkit-background-clip:text;background-clip:text;color:transparent}
.metric .l{font-size:.8rem;color:var(--muted);margin-top:4px}
.callout{border-left:4px solid var(--magenta);padding:6px 0 6px 20px;margin:26px 0;
  font-family:'Space Grotesk',sans-serif;font-size:1.25rem;font-weight:500;line-height:1.4}
.note{font-size:.82rem;color:var(--muted-2);margin-top:30px;padding-top:16px;border-top:1px solid var(--line)}

/* notes / articles */
.note-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.note-card{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;background:#fff;transition:.2s var(--ease);display:flex;flex-direction:column}
.note-card:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(14,10,36,.1)}
.note-card .cover{min-height:150px;border-radius:0}
.note-card .body{padding:18px 20px 20px}
.note-card h3{font-size:1.05rem;line-height:1.25}
.note-card .meta{font-family:'Space Mono',monospace;font-size:.64rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted-2);margin-top:10px}

/* about */
.about-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:start}
.tl{list-style:none}
.tl li{position:relative;padding:0 0 22px 26px;border-left:2px solid var(--line)}
.tl li:last-child{border-left-color:transparent}
.tl li::before{content:"";position:absolute;left:-7px;top:2px;width:12px;height:12px;border-radius:50%;background:var(--grad-fire)}
.tl .yr{font-family:'Space Mono',monospace;font-size:.7rem;letter-spacing:.1em;color:var(--magenta);text-transform:uppercase}
.tl .role{font-family:'Space Grotesk',sans-serif;font-weight:700;margin:2px 0}
.tl .org{color:var(--muted);font-size:.92rem}
.side-card{background:var(--ink);color:#fff;border-radius:var(--r);padding:26px;position:relative;overflow:hidden}
.side-card::before{content:"";position:absolute;inset:0;background:radial-gradient(400px 200px at 90% 0,rgba(255,29,131,.4),transparent 60%)}
.side-card *{position:relative}
.side-card h3{margin-bottom:10px}
.side-card ul{list-style:none}
.side-card li{padding:6px 0;color:rgba(255,255,255,.82);font-size:.92rem;border-bottom:1px solid rgba(255,255,255,.08)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.contact-card{border:1px solid var(--line);border-radius:var(--r);padding:28px;background:#fff;transition:.2s var(--ease)}
.contact-card:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(14,10,36,.1)}
.contact-card .ic{width:46px;height:46px;border-radius:12px;display:grid;place-items:center;color:#fff;font-weight:700;font-family:'Space Grotesk',sans-serif;margin-bottom:14px}
.contact-card h3{margin-bottom:6px}
.contact-card p{color:var(--muted);font-size:.95rem;margin-bottom:14px}

/* download gate */
.gate{background:var(--ink);color:#fff;border-radius:var(--r);padding:30px;position:relative;overflow:hidden}
.gate::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 220px at 100% 0,rgba(123,47,247,.5),transparent 60%)}
.gate *{position:relative}
.gate h3{font-size:1.4rem;margin-bottom:8px}
.gate p{color:rgba(255,255,255,.74);margin-bottom:16px;font-size:.95rem}
.gate form{display:flex;gap:10px;flex-wrap:wrap}
.gate input{flex:1;min-width:180px;padding:12px 14px;border-radius:11px;border:1px solid rgba(255,255,255,.2);
  background:rgba(255,255,255,.06);color:#fff;font-family:inherit;font-size:.95rem}
.gate input::placeholder{color:rgba(255,255,255,.5)}
.gate small{display:block;margin-top:10px;color:rgba(255,255,255,.5);font-size:.78rem}

/* footer */
footer{background:var(--ink);color:rgba(255,255,255,.6);padding:42px 0;margin-top:0}
footer .wrap{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;align-items:center}
footer a{color:rgba(255,255,255,.8)}
footer a:hover{color:#fff}
.foot-links{display:flex;gap:18px;font-size:.9rem}

/* assistant bot */
#bot-toggle{position:fixed;right:22px;bottom:22px;z-index:60;background:var(--grad-fire);color:#fff;border:none;
  border-radius:999px;padding:14px 20px;font-family:'Space Grotesk',sans-serif;font-weight:700;cursor:pointer;
  box-shadow:0 12px 30px rgba(255,29,131,.4);font-size:.95rem;transition:.18s var(--ease)}
#bot-toggle:hover{transform:translateY(-2px)}
#bot{position:fixed;right:22px;bottom:84px;z-index:61;width:min(380px,calc(100vw - 44px));height:min(560px,70vh);
  background:#fff;border-radius:20px;box-shadow:0 30px 70px rgba(14,10,36,.34);display:none;flex-direction:column;overflow:hidden;border:1px solid var(--line)}
#bot.open{display:flex}
.bot-head{background:var(--ink);color:#fff;padding:16px 18px;position:relative;overflow:hidden}
.bot-head::before{content:"";position:absolute;inset:0;background:radial-gradient(300px 140px at 100% 0,rgba(255,29,131,.5),transparent 60%)}
.bot-head *{position:relative}
.bot-head .t{font-family:'Space Grotesk',sans-serif;font-weight:700}
.bot-head .s{font-size:.74rem;color:rgba(255,255,255,.7)}
.bot-head .x{position:absolute;right:14px;top:14px;background:none;border:none;color:#fff;font-size:1.2rem;cursor:pointer}
.bot-log{flex:1;overflow-y:auto;padding:16px;background:var(--surface);display:flex;flex-direction:column;gap:10px}
.msg{max-width:84%;padding:10px 13px;border-radius:14px;font-size:.9rem;line-height:1.5}
.msg.bot{background:#fff;border:1px solid var(--line);align-self:flex-start;border-bottom-left-radius:4px}
.msg.me{background:var(--ink);color:#fff;align-self:flex-end;border-bottom-right-radius:4px}
.bot-opts{padding:12px;display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--line);background:#fff;max-height:230px;overflow-y:auto}
.opt{text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:11px;padding:10px 13px;
  font-family:inherit;font-size:.86rem;cursor:pointer;transition:.15s var(--ease);color:var(--ink)}
.opt:hover{background:#fff;border-color:var(--magenta);color:var(--magenta)}
.bot-foot{font-size:.66rem;color:var(--muted-2);text-align:center;padding:8px;background:#fff;border-top:1px solid var(--line)}

/* responsive */
@media(max-width:820px){
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    flex-direction:column;padding:10px 18px;gap:2px}
  .nav-links.show{display:flex}
  .nav-links a{padding:11px 8px}
  .menu-btn{display:block}
  .about-grid,.contact-grid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto}}