/* ============================================================
   KovaDeck — Shared base styles
   Design language: warm, calm, trustworthy
   ============================================================ */

:root{
  --bg:#fafaf5; --bg-soft:#f4f3eb; --bg-warm:#f7f5ec;
  --card:#ffffff; --card-warm:#fbfaf3;
  --ink:#0e1117; --ink-soft:#1a1a1f; --ink-mid:#34343d;
  --muted:#6c6c75; --muted-soft:#8d8d94; --whisper:#b3b3b8;
  --line:#e8e6dc; --line-soft:#f0eee5; --line-warm:#ddd9cb;
  --green:#00b67a; --green-dark:#009566; --green-soft:#ebf6f0; --green-faint:#f4faf6;
  --blue:#1a4fff; --blue-soft:#eff2ff;
  --amber:#d97706; --amber-soft:#fef3c7;
  --red:#dc2626; --red-soft:#fef2f2;
  --radius-xs:6px; --radius-sm:10px; --radius-md:14px; --radius-lg:20px; --radius-xl:28px; --radius-pill:999px;
  --shadow-xs:0 1px 2px rgba(20,20,25,0.04);
  --shadow-sm:0 1px 3px rgba(20,20,25,0.05),0 1px 2px rgba(20,20,25,0.03);
  --shadow-md:0 6px 16px rgba(20,20,25,0.06),0 2px 4px rgba(20,20,25,0.04);
  --shadow-lg:0 20px 48px rgba(20,20,25,0.08),0 4px 12px rgba(20,20,25,0.05);
  --shadow-xl:0 32px 80px rgba(20,20,25,0.10),0 8px 24px rgba(20,20,25,0.06);
  --tr:0.18s cubic-bezier(0.4,0,0.2,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--bg);
  color:var(--ink-soft);
  font-family:'Onest',-apple-system,BlinkMacSystemFont,sans-serif;
  font-size:15.5px; line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  text-rendering:optimizeLegibility;
}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,textarea{font-family:inherit}

/* ===== Skip link ===== */
.skip-link{position:absolute;left:-9999px;top:auto;width:1px;height:1px;overflow:hidden}
.skip-link:focus{position:fixed;left:1rem;top:1rem;width:auto;height:auto;padding:.75rem 1rem;background:var(--green);color:#fff;border-radius:8px;font-weight:700;z-index:9999}

/* ===== NAV ===== */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(250,250,245,0.85);
  backdrop-filter:saturate(160%) blur(12px);
  -webkit-backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--line-soft);
}
.nav-inner{max-width:1240px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-0.02em;font-size:19px;color:var(--ink)}
.brand-mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(135deg,#0e1117 0%,#1f2733 100%);
  color:#fafaf5;display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;letter-spacing:-0.02em;
  position:relative;box-shadow:0 4px 12px rgba(14,17,23,0.18);
}
.brand-mark::after{content:'';position:absolute;top:-2px;right:-2px;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#00b67a,#00d68a);box-shadow:0 0 8px rgba(0,182,122,0.5)}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-link{padding:8px 14px;border-radius:var(--radius-sm);font-size:14.5px;font-weight:500;color:var(--muted);transition:color var(--tr),background var(--tr)}
.nav-link:hover{color:var(--ink);background:var(--bg-soft)}
.nav-cta{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;border-radius:var(--radius-pill);background:var(--ink);color:#fafaf5;font-weight:600;font-size:14px;transition:background var(--tr),transform var(--tr)}
.nav-cta:hover{background:#000;transform:translateY(-1px)}
.nav-mobile{display:none;width:40px;height:40px;border-radius:10px;background:var(--bg-soft);align-items:center;justify-content:center;font-size:20px}
.nav-back{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14px;font-weight:500;padding:8px 12px;border-radius:10px;transition:all var(--tr)}
.nav-back:hover{background:var(--bg-soft);color:var(--ink)}
.nav-help{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;color:var(--muted);padding:8px 14px;border-radius:99px;border:1px solid var(--line);transition:all var(--tr)}
.nav-help:hover{border-color:var(--ink-mid);color:var(--ink)}

@media(max-width:900px){.nav-links{display:none}.nav-mobile{display:flex}}

/* Mobile drawer */
.drawer{position:fixed;top:0;right:-100%;height:100vh;width:min(86vw,360px);z-index:200;background:var(--card);box-shadow:-12px 0 40px rgba(20,20,25,0.12);transition:right 0.3s cubic-bezier(0.4,0,0.2,1);display:flex;flex-direction:column;padding:24px}
.drawer.open{right:0}
.drawer-overlay{position:fixed;inset:0;background:rgba(14,17,23,0.4);z-index:190;opacity:0;pointer-events:none;transition:opacity 0.3s}
.drawer-overlay.open{opacity:1;pointer-events:auto}
.drawer-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}
.drawer-close{width:36px;height:36px;border-radius:10px;background:var(--bg-soft);display:flex;align-items:center;justify-content:center;font-size:20px}
.drawer a{padding:14px 12px;font-size:16px;font-weight:500;color:var(--ink);border-radius:10px}
.drawer a:hover{background:var(--bg-soft)}
.drawer .drawer-cta{margin-top:14px;text-align:center;background:var(--ink);color:#fafaf5;border-radius:var(--radius-pill);font-weight:600}

/* ===== Buttons ===== */
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:16px 28px;border-radius:var(--radius-pill);background:var(--ink);color:#fafaf5;font-weight:600;font-size:15.5px;transition:background var(--tr),transform var(--tr),box-shadow var(--tr);box-shadow:0 4px 14px rgba(14,17,23,0.2)}
.btn-primary:hover{background:#000;transform:translateY(-2px);box-shadow:0 8px 24px rgba(14,17,23,0.28)}
.btn-secondary{display:inline-flex;align-items:center;gap:8px;padding:16px 26px;border-radius:var(--radius-pill);background:var(--card);color:var(--ink);font-weight:600;font-size:15.5px;border:1px solid var(--line-warm);transition:border-color var(--tr),transform var(--tr)}
.btn-secondary:hover{border-color:var(--ink);transform:translateY(-2px)}
.btn-green{display:inline-flex;align-items:center;gap:8px;padding:14px 26px;border-radius:var(--radius-pill);background:var(--green);color:#fff;font-weight:600;font-size:15px;transition:background var(--tr),transform var(--tr);box-shadow:0 4px 14px rgba(0,182,122,0.25)}
.btn-green:hover{background:var(--green-dark);transform:translateY(-2px)}

/* ===== Section ===== */
.sec{padding:88px 24px;position:relative}
.sec-inner{max-width:1180px;margin:0 auto}
.sec-head{text-align:center;max-width:680px;margin:0 auto 56px}
.sec-eyebrow{display:inline-block;font-size:12px;font-weight:700;color:var(--green);text-transform:uppercase;letter-spacing:0.12em;margin-bottom:14px;padding:5px 12px;background:var(--green-soft);border-radius:var(--radius-pill)}
.sec-title{font-size:clamp(30px,4.5vw,46px);font-weight:700;letter-spacing:-0.035em;color:var(--ink);line-height:1.1;margin-bottom:14px}
.sec-sub{font-size:clamp(15px,1.6vw,17px);color:var(--muted);line-height:1.55}

/* ===== Footer ===== */
footer{background:var(--bg-soft);padding:56px 24px 32px;border-top:1px solid var(--line)}
.foot-inner{max-width:1240px;margin:0 auto}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
@media(max-width:900px){.foot-grid{grid-template-columns:1fr 1fr}}
@media(max-width:540px){.foot-grid{grid-template-columns:1fr}}
.foot-tag{color:var(--muted);font-size:14px;line-height:1.6;margin-top:12px;max-width:280px}
.foot-col h4{font-size:12.5px;font-weight:700;color:var(--ink);text-transform:uppercase;letter-spacing:0.1em;margin-bottom:14px}
.foot-col ul{list-style:none}
.foot-col li{margin-bottom:8px}
.foot-col a{color:var(--muted);font-size:14px;transition:color var(--tr)}
.foot-col a:hover{color:var(--ink)}
.foot-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;padding-top:28px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.foot-social{display:flex;gap:10px;margin-top:18px}
.foot-social a{width:36px;height:36px;background:var(--card);border:1px solid var(--line);display:flex;align-items:center;justify-content:center;border-radius:10px;color:var(--ink-mid);transition:all var(--tr)}
.foot-social a:hover{background:var(--ink);color:#fafaf5;border-color:var(--ink)}

/* ===== Support chat ===== */
.chat-launcher{position:fixed;bottom:24px;right:24px;z-index:90;width:60px;height:60px;border-radius:50%;background:var(--ink);color:#fafaf5;display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:0 10px 30px rgba(14,17,23,0.3);cursor:pointer;transition:transform var(--tr)}
.chat-launcher:hover{transform:scale(1.05)}
.chat-launcher .chat-dot{position:absolute;top:0;right:0;width:14px;height:14px;border-radius:50%;background:var(--green);border:2px solid var(--card)}
.chat-window{position:fixed;bottom:24px;right:24px;z-index:91;width:min(380px,calc(100vw - 24px));height:min(580px,calc(100vh - 48px));background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);display:none;flex-direction:column;overflow:hidden}
.chat-window.open{display:flex;animation:slideUp 0.3s cubic-bezier(0.4,0,0.2,1)}
.chat-head{background:linear-gradient(135deg,#0e1117 0%,#1f2733 100%);color:#fafaf5;padding:18px 20px;display:flex;align-items:center;justify-content:space-between}
.chat-head-left{display:flex;align-items:center;gap:12px}
.chat-head-avatar{width:38px;height:38px;border-radius:50%;background:rgba(0,182,122,0.18);color:#00d68a;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;border:1px solid rgba(0,182,122,0.3)}
.chat-head-name{font-weight:700;font-size:15px}
.chat-head-status{font-size:11px;color:rgba(255,255,255,0.55);display:flex;align-items:center;gap:5px;margin-top:2px}
.chat-head-status::before{content:'';width:7px;height:7px;border-radius:50%;background:#00d68a;box-shadow:0 0 6px #00d68a}
.chat-head-close{width:32px;height:32px;border-radius:8px;background:rgba(255,255,255,0.06);color:#fafaf5;display:flex;align-items:center;justify-content:center;font-size:18px;cursor:pointer}
.chat-body{flex:1;overflow-y:auto;padding:18px;background:var(--bg-soft);display:flex;flex-direction:column;gap:10px}
.chat-msg{max-width:85%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.5;word-wrap:break-word}
.chat-msg.bot{background:var(--card);color:var(--ink);align-self:flex-start;border:1px solid var(--line);border-bottom-left-radius:4px}
.chat-msg.user{background:var(--ink);color:#fafaf5;align-self:flex-end;border-bottom-right-radius:4px}
.chat-foot{padding:14px;background:var(--card);border-top:1px solid var(--line)}
.chat-form{display:flex;gap:8px}
.chat-input{flex:1;padding:11px 14px;border:1px solid var(--line);border-radius:var(--radius-pill);font-size:14px;outline:none;transition:border-color var(--tr)}
.chat-input:focus{border-color:var(--ink)}
.chat-send{width:42px;height:42px;border-radius:50%;background:var(--ink);color:#fafaf5;display:flex;align-items:center;justify-content:center;font-size:18px;cursor:pointer;flex-shrink:0;transition:background var(--tr)}
.chat-send:hover{background:#000}
.chat-email-form{padding:24px 20px;flex:1;display:flex;flex-direction:column;gap:14px;justify-content:center;background:var(--bg-soft)}
.chat-email-form h3{font-size:18px;color:var(--ink);font-weight:700;letter-spacing:-0.01em}
.chat-email-form p{color:var(--muted);font-size:14px;line-height:1.55}
.chat-email-form input{padding:12px 16px;border:1px solid var(--line);border-radius:var(--radius-md);font-size:14px;outline:none}
.chat-email-form input:focus{border-color:var(--ink)}
.chat-email-form button{padding:13px;border-radius:var(--radius-md);background:var(--ink);color:#fafaf5;font-weight:600;font-size:14.5px;cursor:pointer}

/* PWA toast */
.pwa-toast{position:fixed;bottom:20px;left:20px;right:20px;max-width:420px;margin:0 auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);padding:18px;display:none;z-index:80;animation:slideUp 0.4s cubic-bezier(0.4,0,0.2,1)}
.pwa-toast.show{display:flex;align-items:flex-start;gap:14px}
.pwa-toast-icon{width:42px;height:42px;border-radius:11px;background:var(--ink);color:#fafaf5;display:flex;align-items:center;justify-content:center;font-weight:800;flex-shrink:0}
.pwa-toast-text{flex:1}
.pwa-toast-title{font-weight:700;color:var(--ink);font-size:14.5px;margin-bottom:2px}
.pwa-toast-sub{font-size:12.5px;color:var(--muted)}
.pwa-toast-actions{display:flex;gap:6px;margin-top:10px}
.pwa-toast-btn{padding:7px 12px;border-radius:8px;font-weight:600;font-size:12.5px;cursor:pointer}
.pwa-toast-btn.primary{background:var(--ink);color:#fafaf5}
.pwa-toast-btn.ghost{background:transparent;color:var(--muted)}

@keyframes slideUp{from{transform:translateY(120%);opacity:0}to{transform:translateY(0);opacity:1}}
@keyframes spin{to{transform:rotate(360deg)}}

@media(prefers-reduced-motion:reduce){*{animation-duration:0.01ms!important;transition-duration:0.01ms!important}}

@media(max-width:600px){
  .nav-inner{padding:0 16px;height:60px}
  .brand-mark{width:30px;height:30px;font-size:14px}
  .brand{font-size:17px}
  .sec{padding:64px 18px}
  .sec-head{margin-bottom:36px}
  .chat-launcher{bottom:18px;right:18px;width:54px;height:54px;font-size:22px}
  .chat-window{bottom:0;right:0;width:100vw;height:100vh;border-radius:0;border:0}
}