/* ===========================================================
   HELORAS — Aydınlık & Ferah Premium Tasarım Sistemi
   Beyaz zemin, safir/indigo + cyan vurgular, yumuşak gölgeler
   =========================================================== */
:root{
  --bg:#ffffff;
  --bg-soft:#f4f8ff;       /* ferah açık bölüm zemini */
  --bg-3:#eaf1fc;
  --ink:#0f1b35;           /* derin lacivert metin */
  --muted:#566181;         /* ikincil */
  --faint:#8a96b4;         /* en soluk */
  --line:rgba(15,27,53,.08);
  --line-2:rgba(15,27,53,.14);
  --sapphire:#2563eb;
  --indigo:#4f46e5;
  --diamond:#0891b2;       /* okunaklı cyan */
  --violet:#8b5cf6;
  --gold:#b9882f;
  --grad: linear-gradient(120deg,#4f46e5 0%,#2563eb 50%,#0891b2 100%);   /* fill/buton (beyaz yazı güvenli) */
  --grad-bright: linear-gradient(120deg,#4f46e5 0%,#2563eb 42%,#06b6d4 100%); /* metin vurgusu */
  --grad-soft: linear-gradient(135deg,rgba(79,70,229,.10),rgba(6,182,212,.08));
  --radius:18px;
  --radius-lg:26px;
  --shadow: 0 30px 70px -30px rgba(15,40,100,.30);
  --shadow-sm: 0 12px 36px -16px rgba(15,40,100,.20);
  --glow: 0 14px 34px -10px rgba(37,99,235,.45);
  --maxw:1180px;
  --font:'Plus Jakarta Sans','Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:var(--font);font-size:16px;line-height:1.65;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3,h4{line-height:1.15;margin:0;font-weight:700;letter-spacing:-.02em;color:var(--ink)}
p{margin:0}
::selection{background:rgba(37,99,235,.18)}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.section{padding:104px 0;position:relative}
.section.soft{background:var(--bg-soft)}
.center{text-align:center}

/* ambient ferah ışıklar */
.bg-orbs{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none}
.bg-orbs::before,.bg-orbs::after{content:"";position:absolute;border-radius:50%;filter:blur(110px);opacity:.55}
.bg-orbs::before{width:540px;height:540px;background:radial-gradient(circle,#cfe0ff,transparent 70%);top:-180px;left:-140px}
.bg-orbs::after{width:520px;height:520px;background:radial-gradient(circle,#d2f3fb,transparent 70%);top:-120px;right:-120px}
.grid-overlay{position:fixed;inset:0;z-index:-1;background-image:linear-gradient(rgba(15,27,53,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(15,27,53,.035) 1px,transparent 1px);background-size:64px 64px;mask-image:radial-gradient(ellipse 75% 55% at 50% 0%,#000 25%,transparent 72%)}

/* ---------- NAV ---------- */
.nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);background:rgba(255,255,255,.82);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:74px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;font-size:20px;letter-spacing:-.03em;color:var(--ink)}
.brand .logo{width:36px;height:36px;border-radius:10px;background:var(--grad);display:grid;place-items:center;box-shadow:var(--glow)}
.brand .logo svg{width:21px;height:21px}
.brand b{background:var(--grad-bright);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{padding:9px 14px;border-radius:10px;color:var(--muted);font-weight:600;font-size:14.5px;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--ink);background:rgba(15,27,53,.05)}
.nav-cta{margin-left:8px}
.nav-toggle{display:none;background:#fff;border:1px solid var(--line-2);color:var(--ink);border-radius:10px;width:42px;height:42px;font-size:20px;cursor:pointer}

/* butonlar */
.btn{display:inline-flex;align-items:center;gap:9px;font-weight:700;font-size:15px;padding:13px 22px;border-radius:12px;cursor:pointer;border:1px solid transparent;transition:.22s;white-space:nowrap}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 44px -10px rgba(37,99,235,.55)}
.btn-ghost{background:#fff;border-color:var(--line-2);color:var(--ink)}
.btn-ghost:hover{border-color:var(--sapphire);background:var(--bg-soft);transform:translateY(-2px)}
.btn-sm{padding:9px 16px;font-size:14px}
.btn svg{width:18px;height:18px}

/* rozet */
.badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--indigo);background:rgba(79,70,229,.08);border:1px solid rgba(79,70,229,.2);padding:7px 14px;border-radius:999px}
.badge .dot{width:7px;height:7px;border-radius:50%;background:var(--indigo);box-shadow:0 0 10px rgba(79,70,229,.7)}

.eyebrow{font-size:13px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--indigo)}
.h-grad{background:var(--grad-bright);-webkit-background-clip:text;background-clip:text;color:transparent}
.lead{color:var(--muted);font-size:18px;max-width:620px}

/* ---------- HERO ---------- */
.hero{position:relative;padding:128px 0 104px;text-align:center;overflow:hidden}
.hero h1{font-size:clamp(40px,7vw,78px);font-weight:800;margin:22px auto 0;max-width:940px}
.hero .lead{margin:24px auto 0;font-size:20px;color:var(--muted)}
.hero-cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;margin-top:40px}
.hero-stats{display:flex;gap:52px;justify-content:center;flex-wrap:wrap;margin-top:72px}
.hero-stats .s b{display:block;font-size:36px;font-weight:800;background:var(--grad-bright);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats .s span{color:var(--faint);font-size:13px;font-weight:700;letter-spacing:.06em}

/* bölüm başlığı */
.sec-head{max-width:700px;margin:0 auto 60px}
.sec-head.center{text-align:center}
.sec-head h2{font-size:clamp(28px,4.5vw,46px);margin-top:14px}
.sec-head p{color:var(--muted);margin-top:16px;font-size:17px}

/* ---------- KART IZGARALARI ---------- */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;transition:.28s;position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}
.card::after{content:"";position:absolute;inset:0;border-radius:inherit;padding:1.5px;background:var(--grad-bright);-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;opacity:0;transition:.28s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.card:hover::after{opacity:.8}
.card .ic{width:56px;height:56px;border-radius:15px;background:var(--grad-soft);border:1px solid rgba(79,70,229,.16);display:grid;place-items:center;color:var(--indigo);margin-bottom:20px}
.card .ic svg{width:27px;height:27px}
.card h3{font-size:21px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.card .more{display:inline-flex;align-items:center;gap:6px;margin-top:18px;color:var(--sapphire);font-weight:700;font-size:14px}
.card .more svg{width:15px;height:15px}
.card.linkable{cursor:pointer}

/* özellik satırı */
.feature-row{display:grid;grid-template-columns:1.05fr 1fr;gap:64px;align-items:center}
.feature-row.rev{direction:rtl}.feature-row.rev>*{direction:ltr}
.feature-list{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:14px}
.feature-list li{display:flex;gap:12px;color:var(--muted);font-size:15.5px}
.feature-list .ck{flex:none;width:24px;height:24px;border-radius:7px;background:rgba(6,182,212,.12);border:1px solid rgba(6,182,212,.3);display:grid;place-items:center;color:var(--diamond);font-size:13px;font-weight:700}
.visual{aspect-ratio:4/3;border-radius:var(--radius-lg);background:var(--grad-soft);border:1px solid var(--line);position:relative;overflow:hidden;display:grid;place-items:center;box-shadow:var(--shadow-sm)}
.visual .code-chip{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;color:#a5b4fc;background:#0b1226;border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:20px 24px;box-shadow:var(--shadow);white-space:pre;line-height:1.7}

/* marka şeridi (müşavirlerkulübü) */
.brandstrip{background:linear-gradient(135deg,rgba(79,70,229,.08),rgba(6,182,212,.06));border:1px solid var(--line-2);border-radius:var(--radius-lg);padding:46px;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center}
.brandstrip .tag{font-size:13px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}
.brandstrip h3{font-size:28px;margin-top:10px}
.brandstrip p{color:var(--muted);margin-top:10px;max-width:560px}

/* süreç adımları */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.step{position:relative;padding:30px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}
.step::before{counter-increment:s;content:"0" counter(s);font-size:40px;font-weight:800;background:var(--grad-bright);-webkit-background-clip:text;background-clip:text;color:transparent}
.step h4{margin:10px 0 8px;font-size:18px}
.step p{color:var(--muted);font-size:14.5px}

/* teknoloji etiketleri */
.tags{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.tag{font-size:14px;font-weight:600;color:var(--muted);background:#fff;border:1px solid var(--line);padding:9px 16px;border-radius:10px;transition:.2s;box-shadow:var(--shadow-sm)}
.tag:hover{color:var(--sapphire);border-color:var(--sapphire);transform:translateY(-2px)}

/* CTA bandı */
.cta-band{background:var(--grad);border-radius:var(--radius-lg);padding:66px;text-align:center;color:#fff;position:relative;overflow:hidden;box-shadow:var(--shadow)}
.cta-band h2{font-size:clamp(28px,4vw,42px);color:#fff}
.cta-band p{margin:14px auto 0;max-width:520px;color:rgba(255,255,255,.92);font-weight:500}
.cta-band .btn{margin-top:28px;background:#fff;color:var(--indigo)}
.cta-band .btn:hover{transform:translateY(-2px);box-shadow:0 16px 36px -12px rgba(0,0,0,.3)}

/* sayfa başlığı */
.page-hero{padding:92px 0 60px;text-align:center;position:relative}
.page-hero h1{font-size:clamp(34px,5.5vw,58px);margin-top:16px}
.page-hero p{color:var(--muted);margin:18px auto 0;max-width:640px;font-size:18px}
.crumbs{font-size:13.5px;color:var(--faint)}
.crumbs a:hover{color:var(--sapphire)}

/* iletişim */
.contact-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:48px;align-items:start}
.info-card{display:flex;gap:16px;padding:20px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin-bottom:14px;box-shadow:var(--shadow-sm)}
.info-card .ic{flex:none;width:46px;height:46px;border-radius:12px;background:var(--grad-soft);display:grid;place-items:center;color:var(--indigo)}
.info-card .ic svg{width:22px;height:22px}
.info-card b{font-size:15px}.info-card span{color:var(--muted);font-size:14.5px}
.form{display:grid;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;box-shadow:var(--shadow-sm)}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field label{display:block;font-size:13.5px;font-weight:600;color:var(--ink);margin-bottom:7px}
.field input,.field textarea,.field select{width:100%;background:var(--bg-soft);border:1px solid var(--line-2);border-radius:11px;padding:13px 15px;color:var(--ink);font-family:inherit;font-size:15px;transition:.2s}
.field input::placeholder,.field textarea::placeholder{color:var(--faint)}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--sapphire);background:#fff;box-shadow:0 0 0 3px rgba(37,99,235,.14)}
.field textarea{min-height:130px;resize:vertical}
.alert{padding:14px 18px;border-radius:12px;font-size:14.5px;font-weight:600}
.alert-ok{background:rgba(16,185,129,.12);border:1px solid rgba(16,185,129,.35);color:#0a7d57}
.alert-err{background:rgba(239,68,68,.10);border:1px solid rgba(239,68,68,.32);color:#b42424}

/* ---------- FOOTER ---------- */
.footer{border-top:1px solid var(--line);background:var(--bg-soft);padding:66px 0 32px;margin-top:40px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.foot-grid h5{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);margin-bottom:16px}
.foot-grid a{display:block;color:var(--muted);font-size:14.5px;padding:6px 0;transition:.2s}
.foot-grid a:hover{color:var(--sapphire)}
.foot-about{color:var(--muted);font-size:14.5px;margin-top:14px;max-width:320px}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:14px;margin-top:48px;padding-top:24px;border-top:1px solid var(--line);color:var(--faint);font-size:13.5px}

/* reveal animasyon */
.reveal{opacity:0;transform:translateY(26px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- RESPONSIVE ---------- */
@media(max-width:920px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .feature-row{grid-template-columns:1fr;gap:32px}
  .feature-row.rev{direction:ltr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .brandstrip{grid-template-columns:1fr;text-align:center}
  .nav-links{position:fixed;inset:74px 0 auto 0;flex-direction:column;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);box-shadow:var(--shadow-sm);padding:18px 24px;gap:4px;display:none}
  .nav-links.open{display:flex}
  .nav-links a{width:100%;padding:13px}
  .nav-toggle{display:grid;place-items:center}
}
@media(max-width:560px){
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .form .row{grid-template-columns:1fr}
  .section{padding:68px 0}
  .hero{padding:96px 0 72px}
  .hero-stats{gap:30px}
  .cta-band,.brandstrip{padding:38px 24px}
}