/* ChetChats — Light Blue Theme */
:root{
  --bg:#f4f8ff;
  --bg-soft:#eaf1ff;
  --card:#ffffff;
  --blue:#2563eb;
  --blue-dark:#1d4ed8;
  --blue-light:#60a5fa;
  --blue-glow:#93c5fd;
  --text:#0f1e3d;
  --muted:#6b7a99;
  --border:#dbe5f5;
  --grad:linear-gradient(135deg,#2563eb,#60a5fa);
  --radius:18px;
  --shadow:0 20px 50px -20px rgba(37,99,235,.45);
  font-family:'Poppins',system-ui,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--text);min-height:100%}
body{
  background:
    radial-gradient(900px 500px at 90% -10%,rgba(96,165,250,.25),transparent 60%),
    radial-gradient(800px 500px at -10% 110%,rgba(37,99,235,.18),transparent 60%),
    var(--bg);
  font-family:'Poppins',system-ui,sans-serif;line-height:1.5;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer;border:none}

/* NAV */
.nav{
  position:sticky;top:0;z-index:50;display:flex;align-items:center;justify-content:space-between;
  padding:18px 6vw;backdrop-filter:blur(14px);background:rgba(255,255,255,.8);
  border-bottom:1px solid var(--border);
}
.logo{font-weight:800;font-size:1.5rem;letter-spacing:-.5px;color:var(--text)}
.logo span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a{color:var(--muted);font-weight:500;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--blue)}
.nav-cta{background:var(--grad);color:#fff !important;padding:10px 22px;border-radius:999px;font-weight:600;box-shadow:var(--shadow);transition:transform .2s}
.nav-cta:hover{transform:translateY(-2px)}
.menu-btn{display:none;background:none;color:var(--text);font-size:1.6rem}

/* BUTTONS */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border-radius:999px;font-weight:600;font-size:1rem;transition:transform .2s,box-shadow .2s}
.btn-primary{background:var(--grad);color:#fff;box-shadow:var(--shadow)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{background:var(--bg-soft)}

/* HERO with REGISTER on LEFT */
.hero{display:grid;grid-template-columns:1fr 1.1fr;gap:60px;align-items:center;padding:60px 6vw 90px}
.hero-copy h1{font-size:clamp(2rem,4.5vw,3.4rem);line-height:1.05;letter-spacing:-1.5px;font-weight:800}
.hero-copy h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy p{margin:20px 0 30px;color:var(--muted);font-size:1.1rem;max-width:520px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:36px;margin-top:40px}
.hero-stats div b{font-size:1.6rem;display:block;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-stats div span{color:var(--muted);font-size:.85rem}

/* Register card on left */
.register-card{
  background:var(--card);border:1px solid var(--border);border-radius:24px;
  padding:32px;box-shadow:0 30px 70px -25px rgba(37,99,235,.35);
}
.register-card h2{font-size:1.6rem;margin-bottom:4px}
.register-card > p.sub{color:var(--muted);margin-bottom:22px;font-size:.95rem}
.register-card .field{margin-bottom:14px}
.register-card .row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.register-card .btn{width:100%;justify-content:center;margin-top:6px}
.register-card .alt{margin-top:14px;text-align:center;color:var(--muted);font-size:.9rem}
.register-card .alt a{color:var(--blue);font-weight:600}

/* Gender picker */
.gender-group{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:6px}
.gender-opt{position:relative}
.gender-opt input{position:absolute;opacity:0;inset:0;cursor:pointer}
.gender-opt label{
  display:flex;flex-direction:column;align-items:center;gap:4px;
  padding:14px 8px;border:2px solid var(--border);border-radius:14px;cursor:pointer;
  transition:.2s;background:var(--bg-soft);
}
.gender-opt .sym{font-size:1.6rem;line-height:1;color:var(--muted);font-weight:700}
.gender-opt .name{font-size:.85rem;color:var(--muted)}
.gender-opt input:checked + label{border-color:var(--blue);background:#e0ecff}
.gender-opt input:checked + label .sym,
.gender-opt input:checked + label .name{color:var(--blue)}

/* SECTION */
section.block{padding:80px 6vw}
.section-head{text-align:center;margin-bottom:50px}
.section-head h2{font-size:clamp(1.8rem,3.5vw,2.6rem);font-weight:800;letter-spacing:-1px}
.section-head h2 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.section-head p{color:var(--muted);margin-top:12px}

/* FEATURES */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px;transition:.3s}
.feature:hover{transform:translateY(-6px);border-color:var(--blue-light);box-shadow:var(--shadow)}
.feature .icon{width:50px;height:50px;border-radius:14px;background:var(--grad);display:grid;place-items:center;font-size:1.4rem;margin-bottom:18px;color:#fff}
.feature h3{margin-bottom:8px}
.feature p{color:var(--muted);font-size:.95rem}

/* FOOTER */
footer{padding:50px 6vw;border-top:1px solid var(--border);text-align:center;color:var(--muted);font-size:.9rem;margin-top:60px;background:var(--card)}
footer a{color:var(--blue)}

/* FORMS */
.form-wrap{max-width:560px;margin:60px auto;padding:40px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.form-wrap h2{margin-bottom:6px;font-size:1.8rem}
.form-wrap > p{color:var(--muted);margin-bottom:28px}
.field{margin-bottom:18px}
.field label{display:block;font-size:.9rem;margin-bottom:6px;color:var(--muted);font-weight:500}
.field input,.field textarea,.field select{
  width:100%;padding:13px 15px;border-radius:12px;background:var(--bg-soft);
  border:1px solid var(--border);color:var(--text);font-family:inherit;font-size:1rem;outline:none;transition:.2s;
}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--blue);background:#fff;box-shadow:0 0 0 4px rgba(37,99,235,.12)}
.field textarea{min-height:130px;resize:vertical}
.form-wrap .btn{width:100%;justify-content:center;margin-top:8px}
.form-msg{margin-top:14px;text-align:center;color:var(--blue);min-height:1.2em}

/* SWIPE */
.swipe-wrap{min-height:calc(100vh - 90px);display:flex;flex-direction:column;align-items:center;padding:30px 20px 60px;gap:30px}
.swipe-stage{position:relative;width:min(380px,92vw);height:560px}
.swipe-card{position:absolute;inset:0;border-radius:24px;overflow:hidden;background:var(--card);border:1px solid var(--border);box-shadow:0 30px 80px -20px rgba(37,99,235,.3);user-select:none;cursor:grab;transition:transform .3s ease,opacity .3s ease}
.swipe-card:active{cursor:grabbing}
.swipe-card .photo{height:75%;background-size:cover;background-position:center;background:var(--grad)}
.swipe-card .meta{padding:18px 22px}
.swipe-card .meta h3{font-size:1.4rem}
.swipe-card .meta p{color:var(--muted);font-size:.9rem;margin-top:4px}
.swipe-card .stamp{position:absolute;top:30px;padding:8px 18px;border:3px solid;border-radius:12px;font-weight:800;font-size:1.4rem;letter-spacing:2px;opacity:0;transition:.2s;transform:rotate(-20deg)}
.swipe-card .stamp.like{right:24px;color:#22c55e;border-color:#22c55e;transform:rotate(20deg)}
.swipe-card .stamp.nope{left:24px;color:#ef4444;border-color:#ef4444}
.swipe-actions{display:flex;gap:18px}
.action-btn{width:64px;height:64px;border-radius:50%;display:grid;place-items:center;background:var(--card);border:1px solid var(--border);font-size:1.6rem;transition:.2s;color:var(--text);box-shadow:0 10px 25px -10px rgba(37,99,235,.2)}
.action-btn:hover{transform:scale(1.08)}
.action-btn.nope{color:#ef4444}
.action-btn.like{color:#22c55e}
.action-btn.super{color:var(--blue)}
.empty-stage{display:grid;place-items:center;height:100%;color:var(--muted);text-align:center;padding:30px}

/* CHAT */
.chat-shell{display:grid;grid-template-columns:320px 1fr;height:calc(100vh - 84px);background:var(--bg-soft)}
.chat-sidebar{border-right:1px solid var(--border);overflow-y:auto;background:var(--card)}
.chat-sidebar h3{padding:20px;font-size:1.1rem;border-bottom:1px solid var(--border)}
.match-item{display:flex;gap:12px;align-items:center;padding:14px 18px;border-bottom:1px solid var(--border);cursor:pointer;transition:.2s}
.match-item:hover,.match-item.active{background:var(--bg-soft)}
.match-item .avatar{width:46px;height:46px;border-radius:50%;background:var(--grad);flex-shrink:0}
.match-item .name{font-weight:600}
.match-item .preview{font-size:.85rem;color:var(--muted)}
.chat-main{display:flex;flex-direction:column;background:var(--bg-soft)}
.chat-head{padding:18px 24px;background:var(--card);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;justify-content:space-between}
.chat-head .who{display:flex;align-items:center;gap:12px}
.chat-head .avatar{width:42px;height:42px;border-radius:50%;background:var(--grad)}
.credit-pill{background:var(--grad);color:#fff;padding:6px 14px;border-radius:999px;font-size:.85rem;font-weight:600}
.messages{flex:1;overflow-y:auto;padding:24px;display:flex;flex-direction:column;gap:12px}
.msg{max-width:65%;padding:11px 16px;border-radius:18px;line-height:1.4;font-size:.95rem}
.msg.them{background:var(--card);border:1px solid var(--border);border-bottom-left-radius:6px;align-self:flex-start}
.msg.me{background:var(--grad);color:#fff;border-bottom-right-radius:6px;align-self:flex-end}
.composer{display:flex;gap:10px;padding:16px 20px;background:var(--card);border-top:1px solid var(--border)}
.composer input{flex:1;padding:13px 16px;border-radius:999px;background:var(--bg-soft);border:1px solid var(--border);color:var(--text);outline:none;font-family:inherit;font-size:.95rem}
.composer input:focus{border-color:var(--blue)}
.composer button{padding:0 22px;border-radius:999px;background:var(--grad);color:#fff;font-weight:600}

/* CREDITS */
.credits-wrap{padding:60px 6vw}
.credit-balance{text-align:center;margin-bottom:50px}
.credit-balance .amt{font-size:3.5rem;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.credit-balance p{color:var(--muted)}
.packs{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;max-width:1100px;margin:0 auto}
.pack{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:30px;text-align:center;transition:.3s;position:relative}
.pack:hover{transform:translateY(-6px);border-color:var(--blue-light);box-shadow:var(--shadow)}
.pack.featured{border-color:var(--blue);box-shadow:var(--shadow)}
.pack .tag{position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;padding:4px 14px;border-radius:999px;font-size:.75rem;font-weight:600}
.pack h3{font-size:1.2rem;color:var(--muted)}
.pack .credits{font-size:2.4rem;font-weight:800;margin:10px 0;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.pack .price{font-size:1.4rem;font-weight:700;margin-bottom:18px}
.pack .btn{width:100%;justify-content:center}

/* RESPONSIVE */
@media(max-width:900px){
  .hero{grid-template-columns:1fr;padding:40px 6vw 70px}
  .features{grid-template-columns:1fr}
  .nav-links{display:none}
  .menu-btn{display:block}
  .chat-shell{grid-template-columns:1fr}
  .chat-sidebar{display:none}
}

/* PURPLE ACCENTS */
:root{
  --purple:#8b5cf6;
  --purple-dark:#7c3aed;
  --purple-light:#c4b5fd;
  --grad-purple:linear-gradient(135deg,#8b5cf6,#c4b5fd);
  --grad-mix:linear-gradient(135deg,#2563eb 0%,#8b5cf6 100%);
}
.badge-purple{display:inline-block;background:var(--grad-purple);color:#fff;padding:6px 14px;border-radius:999px;font-size:.78rem;font-weight:600;margin-bottom:18px;box-shadow:0 10px 25px -10px rgba(139,92,246,.5)}
.hero-visual{display:flex;justify-content:center;align-items:center;margin-top:34px;gap:14px;flex-wrap:wrap}
.hero-visual img{width:46%;max-width:260px;border-radius:22px;box-shadow:0 24px 60px -20px rgba(139,92,246,.5);border:3px solid #fff;object-fit:cover;aspect-ratio:3/4}
.hero-visual img:first-child{transform:rotate(-3deg)}
.hero-visual img:last-child{transform:rotate(3deg)}
.btn-purple{background:var(--grad-purple);color:#fff;box-shadow:0 14px 30px -10px rgba(139,92,246,.5)}
.feature:nth-child(2){border-color:var(--purple-light)}
.feature:nth-child(2) .icon{background:var(--grad-purple)}
.pack:nth-child(even){border-color:var(--purple-light)}
.pack:nth-child(even) .credits,.pack:nth-child(even) .tag{background:var(--grad-purple);-webkit-background-clip:text;background-clip:text}
.pack:nth-child(even) .tag{color:#fff;-webkit-background-clip:border-box;background-clip:border-box}
.nav-links a:hover{color:var(--purple)}
footer a{color:var(--purple)}

/* PROFILE PAGE */
.profile-wrap{max-width:860px;margin:40px auto;padding:0 6vw}
.profile-head{display:flex;gap:24px;align-items:center;background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);margin-bottom:28px}
.profile-avatar{width:110px;height:110px;border-radius:50%;background:var(--grad-mix);display:grid;place-items:center;color:#fff;font-size:2.4rem;font-weight:800;flex-shrink:0;overflow:hidden}
.profile-avatar img{width:100%;height:100%;object-fit:cover}
.profile-head h2{font-size:1.6rem;margin-bottom:4px}
.profile-head p{color:var(--muted);font-size:.95rem}
.profile-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);margin-bottom:24px}
.profile-card h3{margin-bottom:16px;font-size:1.2rem;display:flex;align-items:center;gap:8px}
.profile-card h3 .dot{width:8px;height:8px;border-radius:50%;background:var(--grad-purple)}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.range-row{display:flex;justify-content:space-between;font-size:.85rem;color:var(--muted);margin-top:4px}
input[type=range]{width:100%;accent-color:var(--purple)}
@media(max-width:700px){.row2{grid-template-columns:1fr}.profile-head{flex-direction:column;text-align:center}}