/* ==========================================================================
   NoteBuddy — Design Tokens
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root{
  /* Color */
  --bg: #0E0B09;
  --bg-soft: #14100D;
  --surface: #1B1512;
  --surface-2: #241C17;
  --line: #322922;
  --accent: #FF6A3D;        /* sunset orange */
  --accent-dim: #C24E28;
  --gold: #E8B368;          /* secondary, from logo tail */
  --text: #F7F1E8;
  --text-dim: #B8AC9E;
  --text-faint: #7A6F63;

  /* Type */
  --f-display: 'Space Grotesk', sans-serif;
  --f-body: 'Inter', sans-serif;
  --f-mono: 'JetBrains Mono', monospace;

  /* Layout */
  --max: 1180px;
  --radius: 14px;
  --radius-sm: 8px;
}

/* ---------- Day mode ---------- */
:root[data-theme="light"]{
  --bg: #FFFFFF;
  --bg-soft: #FBF8F4;
  --surface: #FFFFFF;
  --surface-2: #FFF3EA;
  --line: #F0E1D2;
  --accent: #FF6A3D;
  --accent-dim: #E5502A;
  --gold: #D98A3D;
  --text: #221A14;
  --text-dim: #6B5D50;
  --text-faint: #9C8C7C;
}
:root[data-theme="light"] .btn-primary{ color:#FFF9F5; }
:root[data-theme="light"] .device-stage{ box-shadow: inset 0 0 0 1px var(--line); }
:root[data-theme="light"] .cta-band{ background:linear-gradient(120deg,#FFF3EA,#FFFFFF 60%); }
:root[data-theme="light"] .cta-band::before{ background:radial-gradient(circle, rgba(255,106,61,.12), transparent 60%); }
:root[data-theme="light"] .note-card{ box-shadow:0 30px 60px -24px rgba(120,80,50,.25); }
:root[data-theme="light"] body::before{
  background:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(255,106,61,.08), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 10%, rgba(217,138,61,.06), transparent 60%);
}

*{ box-sizing:border-box; margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--f-body);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
  transition:background .3s ease, color .3s ease;
}
body::before{
  content:"";
  position:fixed; inset:0;
  background:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(255,106,61,.14), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 10%, rgba(232,179,104,.08), transparent 60%);
  pointer-events:none;
  z-index:0;
  transition:background .3s ease;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }
::selection{ background:var(--accent); color:#160D08; }
:focus-visible{ outline:2px solid var(--gold); outline-offset:3px; }

.wrap{ max-width:var(--max); margin:0 auto; padding:0 24px; position:relative; z-index:1; }
section{ position:relative; z-index:1; }

h1,h2,h3,h4{ font-family:var(--f-display); letter-spacing:-0.02em; font-weight:600; color:var(--text); }
.eyebrow{
  font-family:var(--f-mono); font-size:12.5px; letter-spacing:.14em; text-transform:uppercase;
  color:var(--accent); display:flex; align-items:center; gap:10px; margin-bottom:14px;
}
.eyebrow::before{ content:""; width:22px; height:1px; background:var(--accent); display:inline-block; }
.lede{ color:var(--text-dim); font-size:1.05rem; max-width:56ch; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  font-family:var(--f-body); font-weight:600; font-size:.95rem;
  padding:14px 26px; border-radius:999px; cursor:pointer; border:1px solid transparent;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-dim));
  color:#1A0D06; box-shadow:0 8px 24px -8px rgba(255,106,61,.55);
}
.btn-primary:hover{ transform:translateY(-2px); box-shadow:0 12px 28px -8px rgba(255,106,61,.7); }
.btn-ghost{
  background:transparent; border-color:var(--line); color:var(--text);
}
.btn-ghost:hover{ border-color:var(--gold); color:var(--gold); }
.btn-sm{ padding:10px 18px; font-size:.85rem; }
.btn-block{ width:100%; }

/* ---------- Nav ---------- */
.nav{
  position:sticky; top:0; z-index:50;
  background:rgba(14,11,9,.78); backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.nav .wrap{ display:flex; align-items:center; justify-content:space-between; height:76px; }
.brand{ display:flex; align-items:center; gap:10px; font-family:var(--f-display); font-weight:700; font-size:1.15rem; }
.brand img{ height:34px; width:auto; }
.nav-links{ display:flex; align-items:center; gap:34px; }
.nav-links a{
  font-size:.92rem; color:var(--text-dim); font-weight:500; position:relative; padding:4px 0;
  transition:color .18s ease;
}
.nav-links a:hover, .nav-links a.active{ color:var(--text); }
.nav-links a.active::after{
  content:""; position:absolute; left:0; right:0; bottom:-6px; height:2px;
  background:var(--accent); border-radius:2px;
}
.nav-cta{ display:flex; align-items:center; gap:14px; }
.nav-toggle{ display:none; background:none; border:none; color:var(--text); font-size:1.5rem; cursor:pointer; }

/* ---------- Theme toggle ---------- */
.theme-toggle{
  width:42px; height:42px; border-radius:999px; border:1px solid var(--line);
  background:var(--surface); color:var(--text); cursor:pointer; position:relative;
  display:flex; align-items:center; justify-content:center; overflow:hidden;
  transition:border-color .2s ease;
}
.theme-toggle:hover{ border-color:var(--accent); }
.theme-toggle span{ position:absolute; font-size:1.05rem; transition:transform .35s ease, opacity .35s ease; }
.theme-icon-sun{ color:var(--gold); transform:translateY(30px); opacity:0; }
.theme-icon-moon{ color:var(--gold); transform:translateY(0); opacity:1; }
:root[data-theme="light"] .theme-icon-sun{ transform:translateY(0); opacity:1; }
:root[data-theme="light"] .theme-icon-moon{ transform:translateY(-30px); opacity:0; }

@media (max-width: 880px){
  .nav-links{
    position:fixed; top:76px; left:0; right:0; background:var(--bg-soft);
    flex-direction:column; align-items:flex-start; gap:0; border-bottom:1px solid var(--line);
    max-height:0; overflow:hidden; transition:max-height .3s ease;
  }
  .nav-links.open{ max-height:400px; }
  .nav-links a{ width:100%; padding:16px 24px; border-bottom:1px solid var(--line); }
  .nav-toggle{ display:block; }
  .nav-cta .btn-ghost{ display:none; }
}

/* ---------- Hero ---------- */
.hero{ padding:88px 0 70px; }
.hero-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:60px; align-items:center; }
.hero h1{ font-size:clamp(2.4rem, 4.6vw, 3.6rem); line-height:1.06; margin-bottom:20px; }
.hero h1 em{ font-style:normal; background:linear-gradient(100deg,var(--accent),var(--gold)); -webkit-background-clip:text; background-clip:text; color:transparent; }
.hero p.lede{ font-size:1.12rem; margin-bottom:32px; }
.hero-actions{ display:flex; gap:16px; flex-wrap:wrap; margin-bottom:36px; }
.hero-meta{ display:flex; gap:28px; color:var(--text-faint); font-family:var(--f-mono); font-size:.78rem; letter-spacing:.03em; }
.hero-meta span{ color:var(--gold); }

/* Signature: waveform -> knowledge card */
.device-stage{
  position:relative; aspect-ratio:1/1; border-radius:24px;
  background:radial-gradient(circle at 30% 20%, rgba(255,106,61,.16), transparent 60%), var(--surface);
  border:1px solid var(--line); overflow:hidden;
  display:flex; align-items:center; justify-content:center;
}
.wave-canvas{ position:absolute; inset:0; width:100%; height:100%; opacity:.9; }
.note-card{
  position:relative; z-index:2; width:78%; background:var(--surface-2);
  border:1px solid var(--line); border-radius:16px; padding:22px 22px 18px;
  opacity:0; transform:translateY(14px) scale(.97);
  animation: cardIn .8s ease .9s forwards;
  box-shadow:0 30px 60px -20px rgba(0,0,0,.6);
}
.note-card .tag{ font-family:var(--f-mono); font-size:11px; color:var(--accent); letter-spacing:.08em; text-transform:uppercase; margin-bottom:10px; display:block; }
.note-card h4{ font-size:1rem; margin-bottom:12px; }
.note-card li{ font-size:.85rem; color:var(--text-dim); display:flex; gap:8px; margin-bottom:8px; }
.note-card li::before{ content:"—"; color:var(--gold); flex:none; }
@keyframes cardIn{ to{ opacity:1; transform:translateY(0) scale(1); } }
@media (prefers-reduced-motion: reduce){
  .note-card{ animation:none; opacity:1; transform:none; }
}

/* ---------- Section shells ---------- */
.section{ padding:96px 0; border-top:1px solid var(--line); }
.section-head{ max-width:640px; margin-bottom:52px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

/* ---------- Stat grid ---------- */
.stat-grid{ display:grid; grid-template-columns:repeat(4,1fr); gap:1px; background:var(--line); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; }
.stat{ background:var(--bg-soft); padding:34px 26px; }
.stat .num{ font-family:var(--f-mono); font-size:2.2rem; color:var(--accent); font-weight:500; }
.stat .lbl{ font-weight:600; margin:6px 0 6px; }
.stat .desc{ font-size:.85rem; color:var(--text-faint); }

/* ---------- Cards / grids ---------- */
.grid-3{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.grid-2{ display:grid; grid-template-columns:repeat(2,1fr); gap:24px; }
.card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:30px; transition:transform .2s ease, border-color .2s ease, background .2s ease;
}
.card:hover{ transform:translateY(-4px); border-color:var(--accent-dim); background:var(--surface-2); }
.card .icon{
  width:46px; height:46px; border-radius:12px; display:flex; align-items:center; justify-content:center;
  background:linear-gradient(135deg, rgba(255,106,61,.18), rgba(232,179,104,.12)); color:var(--accent);
  margin-bottom:18px; font-size:1.3rem;
}
.card h3{ font-size:1.05rem; margin-bottom:10px; }
.card p{ color:var(--text-dim); font-size:.9rem; }

/* ---------- Steps ---------- */
.steps{ display:grid; grid-template-columns:repeat(3,1fr); gap:24px; counter-reset:step; }
.step{ position:relative; padding:34px 26px; background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); }
.step .num{ font-family:var(--f-mono); color:var(--gold); font-size:.8rem; letter-spacing:.1em; margin-bottom:16px; display:block; }
.step h3{ font-size:1.2rem; margin-bottom:10px; }
.step p{ color:var(--text-dim); font-size:.9rem; }
.step:not(:last-child)::after{
  content:"→"; position:absolute; top:34px; right:-30px; color:var(--text-faint); font-size:1.1rem; display:none;
}
@media(min-width:900px){ .step:not(:last-child)::after{ display:block; } }

/* ---------- Table ---------- */
.table-wrap{ overflow-x:auto; border:1px solid var(--line); border-radius:var(--radius); }
table{ width:100%; border-collapse:collapse; min-width:640px; font-size:.88rem; }
th,td{ padding:16px 18px; text-align:left; border-bottom:1px solid var(--line); }
thead th{ font-family:var(--f-mono); font-size:.72rem; letter-spacing:.08em; text-transform:uppercase; color:var(--text-faint); background:var(--surface); }
tbody tr:last-child td{ border-bottom:none; }
tbody tr:hover{ background:var(--surface); }
td.hero-col, th.hero-col{ color:var(--accent); font-weight:600; }
.yes{ color:#8FD19E; } .no{ color:#8A7C70; } .warn{ color:var(--gold); }

/* ---------- Pricing ---------- */
.price-grid{ display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.price-card{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:36px; }
.price-card.highlight{ border-color:var(--accent); background:linear-gradient(180deg, rgba(255,106,61,.08), var(--surface) 40%); }
.price-card .amount{ font-family:var(--f-mono); font-size:2.6rem; color:var(--text); margin:14px 0 4px; }
.price-card .amount span{ font-size:1rem; color:var(--text-faint); }
.price-card ul{ margin:22px 0; }
.price-card li{ font-size:.9rem; color:var(--text-dim); padding:9px 0; border-top:1px solid var(--line); display:flex; gap:10px; }
.price-card li:first-child{ border-top:none; }
.price-card li::before{ content:"✓"; color:var(--accent); flex:none; }

/* ---------- Tabs (use cases) ---------- */
.tabs{ display:flex; gap:10px; margin-bottom:30px; flex-wrap:wrap; }
.tab-btn{
  font-family:var(--f-body); font-weight:600; font-size:.88rem; padding:10px 20px; border-radius:999px;
  border:1px solid var(--line); background:transparent; color:var(--text-dim); cursor:pointer;
  transition:all .18s ease;
}
.tab-btn.active{ background:var(--accent); color:#1A0D06; border-color:var(--accent); }
.tab-panel{ display:none; }
.tab-panel.active{ display:grid; grid-template-columns:1fr 1fr; gap:36px; align-items:center; }
.tab-panel h3{ font-size:1.4rem; margin-bottom:14px; }
.tab-panel p{ color:var(--text-dim); margin-bottom:18px; }
.tab-panel ul li{ font-size:.92rem; color:var(--text-dim); padding:8px 0; display:flex; gap:10px; }
.tab-panel ul li::before{ content:"—"; color:var(--gold); }
.tab-visual{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); padding:30px; font-family:var(--f-mono); font-size:.8rem; color:var(--text-faint); min-height:200px; display:flex; flex-direction:column; justify-content:center; gap:10px; }
.tab-visual b{ color:var(--gold); }

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(120deg,#241209,#160D08 60%);
  border:1px solid var(--accent-dim); border-radius:20px; padding:64px 48px; text-align:center;
  position:relative; overflow:hidden;
}
.cta-band::before{
  content:""; position:absolute; inset:-40%; background:radial-gradient(circle, rgba(255,106,61,.18), transparent 60%);
}
.cta-band > *{ position:relative; z-index:1; }
.cta-band h2{ font-size:clamp(1.8rem,3.4vw,2.6rem); margin-bottom:16px; }
.cta-band p{ color:var(--text-dim); max-width:52ch; margin:0 auto 30px; }
.cta-actions{ display:flex; gap:16px; justify-content:center; flex-wrap:wrap; }

/* ---------- Footer ---------- */
footer{ border-top:1px solid var(--line); padding:56px 0 34px; margin-top:40px; }
.foot-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; margin-bottom:44px; }
.foot-brand .brand{ margin-bottom:14px; }
.foot-brand p{ color:var(--text-faint); font-size:.88rem; max-width:32ch; }
.foot-col h5{ font-family:var(--f-mono); font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; color:var(--text-faint); margin-bottom:16px; }
.foot-col a{ display:block; font-size:.9rem; color:var(--text-dim); padding:6px 0; transition:color .15s ease; }
.foot-col a:hover{ color:var(--accent); }
.foot-bottom{ display:flex; justify-content:space-between; align-items:center; padding-top:26px; border-top:1px solid var(--line); font-size:.8rem; color:var(--text-faint); flex-wrap:wrap; gap:12px; }

/* ---------- Page hero (inner pages) ---------- */
.page-hero{ padding:64px 0 40px; }
.page-hero h1{ font-size:clamp(2rem,4vw,2.8rem); margin-bottom:16px; }

/* ---------- Contact form ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:start; }
.field{ margin-bottom:18px; }
.field label{ display:block; font-size:.82rem; color:var(--text-dim); margin-bottom:8px; font-weight:500; }
.field input, .field select, .field textarea{
  width:100%; background:var(--surface); border:1px solid var(--line); border-radius:var(--radius-sm);
  padding:13px 14px; color:var(--text); font-family:var(--f-body); font-size:.92rem;
  transition:border-color .15s ease;
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color:var(--accent); outline:none; }
.field textarea{ resize:vertical; min-height:110px; }
.form-note{ font-size:.82rem; color:var(--text-faint); margin-top:14px; display:none; }
.form-note.show{ display:block; color:#8FD19E; }
.contact-info .card{ margin-bottom:18px; }

/* ---------- FAQ accordion ---------- */
.faq-list{ display:grid; gap:14px; max-width:760px; }
.faq-item{ background:var(--surface); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; }
.faq-q{
  width:100%; text-align:left; background:none; border:none; cursor:pointer;
  padding:20px 24px; display:flex; align-items:center; justify-content:space-between; gap:16px;
  font-family:var(--f-body); font-weight:600; font-size:.98rem; color:var(--text);
}
.faq-q .plus{ font-family:var(--f-mono); color:var(--accent); font-size:1.2rem; flex:none; transition:transform .25s ease; }
.faq-item.open .faq-q .plus{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .3s ease; }
.faq-a p{ padding:0 24px 20px; color:var(--text-dim); font-size:.9rem; max-width:64ch; }
.faq-item.open .faq-a{ max-height:220px; }

/* ---------- Testimonials ---------- */
.testimonial{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:28px; display:flex; flex-direction:column; gap:16px;
}
.testimonial .quote{ color:var(--text-dim); font-size:.94rem; }
.testimonial .quote::before{ content:"“"; color:var(--accent); font-family:var(--f-display); font-size:1.4rem; }
.testimonial .person{ display:flex; align-items:center; gap:12px; }
.avatar{
  width:38px; height:38px; border-radius:50%; display:flex; align-items:center; justify-content:center;
  background:linear-gradient(135deg,var(--accent),var(--gold)); color:#1A0D06; font-weight:700; font-size:.82rem; flex:none;
}
.person .name{ font-size:.88rem; font-weight:600; color:var(--text); }
.person .role{ font-size:.78rem; color:var(--text-faint); }

/* ---------- Back to top ---------- */
.back-to-top{
  position:fixed; right:22px; bottom:22px; width:46px; height:46px; border-radius:50%;
  background:var(--accent); color:#1A0D06; border:none; font-size:1.1rem; cursor:pointer;
  display:flex; align-items:center; justify-content:center; box-shadow:0 10px 24px -8px rgba(255,106,61,.6);
  opacity:0; visibility:hidden; transform:translateY(10px); transition:opacity .25s ease, transform .25s ease, visibility .25s;
  z-index:40;
}
.back-to-top.show{ opacity:1; visibility:visible; transform:none; }

/* ---------- About / team ---------- */
.team-card{
  background:var(--surface); border:1px solid var(--line); border-radius:var(--radius);
  padding:34px; display:flex; gap:22px; align-items:center;
}
.team-avatar{
  width:76px; height:76px; border-radius:50%; flex:none;
  background:linear-gradient(135deg,var(--accent),var(--gold)); color:#1A0D06;
  display:flex; align-items:center; justify-content:center; font-family:var(--f-display); font-weight:700; font-size:1.5rem;
}
.timeline{ display:grid; gap:0; border-left:2px solid var(--line); margin-left:8px; }
.timeline-item{ position:relative; padding:0 0 32px 28px; }
.timeline-item:last-child{ padding-bottom:0; }
.timeline-item::before{
  content:""; position:absolute; left:-7px; top:2px; width:12px; height:12px; border-radius:50%;
  background:var(--accent); border:2px solid var(--bg);
}
.timeline-item .yr{ font-family:var(--f-mono); font-size:.78rem; color:var(--gold); margin-bottom:4px; display:block; }
.timeline-item h4{ font-size:1rem; margin-bottom:6px; }
.timeline-item p{ color:var(--text-dim); font-size:.88rem; }

/* ---------- Reveal on scroll ---------- */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
.reveal.in{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ .reveal{ opacity:1; transform:none; transition:none; } }

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .hero-grid{ grid-template-columns:1fr; }
  .stat-grid{ grid-template-columns:repeat(2,1fr); }
  .grid-3{ grid-template-columns:1fr 1fr; }
  .grid-2{ grid-template-columns:1fr; }
  .steps{ grid-template-columns:1fr; }
  .price-grid{ grid-template-columns:1fr; }
  .foot-grid{ grid-template-columns:1fr 1fr; }
  .tab-panel.active{ grid-template-columns:1fr; }
  .contact-grid{ grid-template-columns:1fr; }
}
@media (max-width: 600px){
  .stat-grid{ grid-template-columns:1fr; }
  .grid-3{ grid-template-columns:1fr; }
  .foot-grid{ grid-template-columns:1fr 1fr; }
  .section{ padding:64px 0; }
}