/* ChaiTalks — site styles
   Palette: charcoal #15171C · orange #F36B21 · white · silver #AEB6C2 */
:root {
  --ink: #15171C;
  --ink-2: #1D2026;
  --or: #F36B21;
  --or-dark: #D95A14;
  --sil: #AEB6C2;
  --text: #22252B;
  --muted: #5E6573;
  --line: #E6E8EC;
  --paper: #FFFFFF;
  --alt: #F7F5F2;
  --radius: 14px;
  --wrap: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: "Inter", system-ui, sans-serif; color: var(--text); background: var(--paper); line-height: 1.6; font-size: 17px; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { color: var(--or-dark); }
h1, h2, h3 { font-family: "Poppins", "Inter", sans-serif; color: var(--ink); line-height: 1.15; margin: 0 0 .5em; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4.6vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1em; }
.wrap { width: min(var(--wrap), 100% - 40px); margin-inline: auto; }
.narrow { width: min(760px, 100% - 40px); }
.center { text-align: center; }
.muted { color: var(--muted); }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 700; color: var(--or); margin-bottom: .8em; }
.lede { font-size: 1.15rem; color: var(--muted); max-width: 62ch; }
.mt { margin-top: 2.5rem; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 12px; top: 12px; background: #fff; padding: 8px 12px; z-index: 99; }

/* Buttons */
.btn { display: inline-block; background: var(--or); color: #fff; text-decoration: none; font-weight: 600; padding: .8em 1.4em; border-radius: 999px; border: 2px solid var(--or); transition: background .15s, transform .15s; cursor: pointer; font-size: 1rem; font-family: inherit; }
.btn:hover { background: var(--or-dark); border-color: var(--or-dark); transform: translateY(-1px); }
.btn-sm { padding: .5em 1.1em; font-size: .92rem; }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn-light { background: #fff; color: var(--ink); border-color: #fff; }
.btn-light:hover { background: var(--sil); border-color: var(--sil); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(21,23,28,.97); backdrop-filter: blur(6px); }
.header-row { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; }
.wordmark { font-family: "Poppins", sans-serif; font-weight: 700; font-size: 1.45rem; color: #fff; letter-spacing: -0.01em; }
.wordmark .c { color: var(--or); }
.wordmark .t { background: linear-gradient(90deg, #fff 50%, var(--or) 50%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.nav { display: flex; align-items: center; gap: 26px; }
.nav a:not(.btn) { color: #E4E7EC; text-decoration: none; font-size: .95rem; font-weight: 500; }
.nav a:not(.btn):hover, .nav a[aria-current="page"] { color: var(--or); }
.menu-btn { display: none; background: none; border: 1px solid #3A3F49; color: #fff; padding: 8px 14px; border-radius: 8px; font: inherit; cursor: pointer; }

/* Hero */
.hero { background: var(--ink); color: #fff; padding: 72px 0 88px; position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 6px; background: var(--or); }
.hero-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 56px; align-items: center; }
.hero h1 { color: #fff; }
.hero .hl { color: var(--or); }
.hero .lede { color: #C9CED6; }
.hero .btn-ghost { color: #fff; border-color: #fff; }
.hero .btn-ghost:hover { background: #fff; color: var(--ink); }
.hero-photo { text-align: center; }
.photo-ring { width: min(320px, 80vw); aspect-ratio: 1; margin: 0 auto; border-radius: 50%; border: 5px solid var(--or); padding: 6px; }
.photo-ring img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }
.photo-ring.small { width: 220px; }
.tagline { color: var(--sil); font-size: .9rem; letter-spacing: .06em; margin-top: 18px; }

/* Strip */
.strip { background: var(--ink-2); color: #fff; padding: 18px 0; }
.strip-row { display: flex; flex-wrap: wrap; gap: 10px 28px; align-items: center; justify-content: center; font-weight: 600; font-size: .95rem; }
.strip .muted { color: var(--sil); font-weight: 500; }
@media (max-width: 900px) { .strip .sep { display: none; } }

/* Sections */
.section { padding: 80px 0; }
.section.alt { background: var(--alt); }
.page-head { background: var(--ink); color: #fff; padding: 64px 0 56px; border-bottom: 6px solid var(--or); }
.page-head h1 { color: #fff; }
.page-head .lede { color: #C9CED6; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 20px; margin-bottom: 28px; }
.more { color: var(--or-dark); font-weight: 600; text-decoration: none; }

/* Cards */
.cards { display: grid; gap: 22px; }
.cards.three { grid-template-columns: repeat(3, 1fr); }
.cards.two { grid-template-columns: repeat(2, 1fr); }
.card { display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; text-decoration: none; color: var(--text); transition: transform .15s, box-shadow .15s, border-color .15s; }
.card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(21,23,28,.08); border-color: var(--or); }
.card p { color: var(--muted); flex: 1; }
.card .num { font-family: "Poppins", sans-serif; font-weight: 700; color: var(--or); font-size: 1.1rem; margin-bottom: 10px; }
.card .meta { font-size: .82rem; color: var(--muted); margin-bottom: 8px; }
.card .thumb { border-radius: 10px; margin-bottom: 16px; aspect-ratio: 16/9; object-fit: cover; }
.badge { display: inline-block; align-self: flex-start; background: #FFF1E8; color: var(--or-dark); font-size: .78rem; font-weight: 700; padding: 4px 10px; border-radius: 999px; margin-bottom: 12px; }

/* Feature (signature session) */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.steps { list-style: none; counter-reset: s; margin: 0; padding: 0; }
.steps li { counter-increment: s; position: relative; padding: 14px 0 14px 52px; border-bottom: 1px solid var(--line); color: var(--muted); }
.steps li:last-child { border-bottom: 0; }
.steps li::before { content: counter(s); position: absolute; left: 0; top: 12px; width: 34px; height: 34px; border-radius: 50%; background: var(--or); color: #fff; font-weight: 700; display: grid; place-items: center; font-size: .9rem; }
.steps b { color: var(--ink); }

/* Lists (events) */
.list { border-top: 1px solid var(--line); }
.row { display: grid; grid-template-columns: 150px 1fr 30px; gap: 18px; align-items: center; padding: 18px 6px; border-bottom: 1px solid var(--line); text-decoration: none; color: var(--text); }
.row:hover { background: var(--alt); }
.row .date { font-weight: 700; color: var(--or-dark); }
.row .arrow { color: var(--or); font-size: 1.2rem; }
.empty { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; background: var(--alt); border: 1px dashed #D6D9DF; border-radius: var(--radius); padding: 24px 28px; }
.empty p { margin: 0; }

/* CTA band */
.cta-band { background: var(--ink); color: #fff; padding: 56px 0; }
.cta-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px; }
.cta-band h2 { color: #fff; margin-bottom: .25em; }
.cta-band p { color: #C9CED6; margin: 0; }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr auto; gap: 48px; align-items: center; }

/* Posts & prose */
.post { padding: 56px 0 80px; }
.back { display: inline-block; margin-bottom: 24px; color: var(--muted); text-decoration: none; font-size: .95rem; }
.back:hover { color: var(--or-dark); }
.prose { font-size: 1.06rem; }
.prose h2 { margin-top: 1.6em; font-size: 1.5rem; }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin-bottom: .4em; }
.prose blockquote { margin: 1.5em 0; padding: 4px 0 4px 20px; border-left: 4px solid var(--or); color: var(--muted); }
.prose img { border-radius: 10px; margin: 1.5em 0; }
.cover { border-radius: var(--radius); margin: 8px 0 28px; }
.notice { background: #FFF6F0; border: 1px solid #F8C9A9; border-left: 5px solid var(--or); border-radius: 10px; padding: 14px 18px; margin: 20px 0 28px; color: var(--text); font-size: .96rem; }
.page-head .notice { margin-top: 28px; margin-bottom: 0; }
.post-cta { margin-top: 48px; padding: 24px 28px; border-radius: var(--radius); background: var(--alt); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.post-cta p { margin: 0; font-weight: 600; }

/* Filters */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.chip { font: inherit; font-size: .9rem; border: 1px solid var(--line); background: #fff; padding: 7px 14px; border-radius: 999px; cursor: pointer; color: var(--text); }
.chip.is-on, .chip:hover { background: var(--ink); color: #fff; border-color: var(--ink); }

/* Invite topics */
.topics { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 22px; margin-bottom: 24px; }
.topic { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; }
.topic p { color: var(--muted); margin: 0; }
.topic.featured { background: var(--ink); border-color: var(--ink); }
.topic.featured h3 { color: #fff; }
.topic.featured p { color: #C9CED6; }

/* Forms */
.form-wrap { display: grid; grid-template-columns: 1.6fr 1fr; gap: 48px; align-items: start; }
.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; display: grid; gap: 18px; }
.form h2 { margin-bottom: 0; }
.form label { display: block; font-weight: 600; font-size: .95rem; color: var(--ink); }
.form label > input, .form label > select, .form label > textarea { display: block; margin-top: 6px; }
.form .opt { font-weight: 400; color: var(--muted); }
.form input[type=text], .form input[type=email], .form input[type=tel], .form select, .form textarea {
  font: inherit; font-weight: 400; font-size: 1rem; padding: 12px 14px; border: 1px solid #D3D7DE; border-radius: 10px; background: #fff; color: var(--text); width: 100%; }
.form input:focus, .form select:focus, .form textarea:focus { outline: 3px solid rgba(243,107,33,.25); border-color: var(--or); }
.form label.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; color: var(--muted); }
.form label.check > input { display: inline; width: auto; margin-top: 5px; accent-color: var(--or); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.hp { display: none !important; }
.form-status { margin: 0; font-weight: 600; }
.form-status.ok { color: #1A7F4B; }
.form-status.err { color: #B42318; }
.side-note { background: var(--alt); border-radius: var(--radius); padding: 28px; }
.section.alt .side-note { background: #fff; border: 1px solid var(--line); }
.side-note ol { padding-left: 1.2em; }

/* Footer */
.site-footer { background: var(--ink); color: #C9CED6; padding: 56px 0 28px; }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; }
.footer-links { display: grid; grid-template-columns: repeat(2, auto); gap: 8px 40px; }
.footer-links a { color: #E4E7EC; text-decoration: none; font-size: .95rem; }
.footer-links a:hover { color: var(--or); }
.site-footer .muted { color: var(--sil); margin-top: 10px; }
.footer-base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; border-top: 1px solid #2B2F37; margin-top: 36px; padding-top: 20px; color: #8A919E; }

/* Responsive */
@media (max-width: 900px) {
  .menu-btn { display: block; }
  .nav { display: none; position: absolute; top: 70px; left: 0; right: 0; background: var(--ink); flex-direction: column; align-items: stretch; gap: 0; padding: 8px 20px 20px; border-bottom: 4px solid var(--or); }
  .nav.open { display: flex; }
  .nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid #2B2F37; }
  .nav .btn { margin-top: 14px; text-align: center; }
  .hero-grid, .feature, .form-wrap, .about-grid { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 64px; }
  .hero-photo { order: -1; }
  .photo-ring { width: 200px; }
  .cards.three, .cards.two, .topics { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
  .grid2 { grid-template-columns: 1fr; }
  .row { grid-template-columns: 1fr 24px; }
  .row .date { grid-column: 1 / -1; }
  .about-grid .photo-ring { order: -1; margin: 0; width: 160px; }
  .form { padding: 22px; }
}