/*
Theme Name: Polar Linguist
Theme URI: https://www.polarlinguist.com
Author: Polar Linguist
Description: Minimal, fast Mandarin-learning site — home, about and contact templates with the trainer profile. Converted from the static prototype.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GPLv2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: polar-linguist
*/

/* ============================================================
   Tokens & base
   ============================================================ */
:root{
  --accent:#0284c7; --accent-dark:#0369a1; --accent-soft:#e0f2fe;
  --red:#dc2626; --red-soft:#fef2f2;
  --ink:#0f172a; --ink-soft:#475569; --ink-mute:#64748b;
  --bg:#ffffff; --bg-alt:#f8fafc; --line:#e2e8f0;
  --radius:12px; --shadow:0 1px 2px rgba(15,23,42,.05);
  --shadow-lg:0 8px 24px rgba(15,23,42,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Inter',system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3{letter-spacing:-0.025em;line-height:1.15}
a{text-decoration:none;color:inherit}
img{max-width:100%}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.eyebrow{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.btn{display:inline-block;padding:12px 24px;border-radius:8px;font-weight:600;font-size:15px;border:1px solid transparent;cursor:pointer;transition:background .15s,border-color .15s,box-shadow .15s;font-family:inherit}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-dark);box-shadow:var(--shadow-lg)}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--ink-mute)}
.screen-reader-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}

/* ============================================================
   Nav
   ============================================================ */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:800;font-size:20px;letter-spacing:-0.03em;display:flex;align-items:center;gap:9px}
.logo span{color:var(--accent)}
.logo svg{flex-shrink:0}
.nav-links{display:flex;gap:8px;align-items:center;list-style:none}
.nav-links a{padding:8px 14px;border-radius:8px;font-size:14px;font-weight:500;color:var(--ink-soft);transition:color .15s,background .15s}
.nav-links a:hover{color:var(--ink);background:var(--bg-alt)}
.nav-links a.active{color:var(--accent);background:var(--accent-soft);font-weight:600}
.nav-cta{margin-left:8px}
.nav-cta a{padding:9px 18px;font-size:14px}
.hamburger{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 10px;cursor:pointer}
.hamburger svg{display:block}
/* keep the sticky bar clear of the WP admin bar */
.admin-bar .nav{top:32px}
@media screen and (max-width:782px){.admin-bar .nav{top:46px}}

/* ============================================================
   Sections
   ============================================================ */
section{padding:80px 0}
.section-alt{background:var(--bg-alt);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{text-align:center;max-width:640px;margin:0 auto 48px}
.section-head h2{font-size:clamp(26px,3.5vw,36px);font-weight:800;margin-bottom:12px}
.section-head p{color:var(--ink-soft)}
.home .section-head{max-width:620px}
.pl-contact .section-head{max-width:600px;margin-bottom:40px}

/* Page hero (about / contact / generic pages) */
.page-hero{padding:88px 0 72px;text-align:center}
.page-hero h1{font-size:clamp(32px,4.5vw,52px);font-weight:800;max-width:720px;margin:0 auto 20px}
.page-hero h1 em{font-style:normal;color:var(--accent)}
.page-hero p{font-size:18px;color:var(--ink-soft);max-width:600px;margin:0 auto}
.pl-contact .page-hero{padding:88px 0 64px}
.pl-contact .page-hero p{max-width:560px}

/* ============================================================
   Home — hero
   ============================================================ */
.hero{padding:80px 0 88px}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.hero h1{font-size:clamp(34px,5vw,54px);font-weight:800;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero-text > p{font-size:18px;color:var(--ink-soft);max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-phrases{margin-top:44px;display:flex;gap:28px;flex-wrap:wrap}
.hero-phrases div{font-size:14px;color:var(--ink-mute)}
.hero-phrases b{display:block;font-size:22px;font-weight:600;color:var(--ink-soft)}
.hero-art{border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-lg);overflow:hidden;background:#fff}
.hero-art svg{display:block;width:100%;height:auto}

/* ============================================================
   Home — course tracks
   ============================================================ */
.lang-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.lang-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:border-color .15s,box-shadow .15s,transform .15s;display:flex;flex-direction:column}
.lang-card:hover{border-color:var(--accent);box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.card-img{display:block;width:100%;height:auto;border-bottom:1px solid var(--line)}
.lang-body{padding:28px 28px 26px;display:flex;flex-direction:column;flex:1}
.lang-card h3{font-size:19px;font-weight:700;margin-bottom:8px}
.lang-card h3 small{font-weight:600;color:var(--ink-mute);font-size:13px;margin-left:6px}
.lang-body > p{font-size:14px;color:var(--ink-soft);flex:1;margin-bottom:20px}
.lang-meta{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-mute)}
.pill{display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:600}
.pill-green{background:#ecfdf5;color:#047857}
.pill-amber{background:#fffbeb;color:#b45309}
.pill-red{background:var(--red-soft);color:#b91c1c}
.coming-soon{margin-top:32px;text-align:center;font-size:14px;color:var(--ink-mute)}
.coming-soon strong{color:var(--ink-soft)}

/* ============================================================
   Home — features
   ============================================================ */
.feat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);transition:border-color .15s,box-shadow .15s}
.feat:hover{border-color:#bae6fd;box-shadow:var(--shadow-lg)}
.feat-icon{width:44px;height:44px;border-radius:10px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.feat h3{font-size:16px;font-weight:700;margin-bottom:8px}
.feat p{font-size:14px;color:var(--ink-soft)}

/* ============================================================
   Home — panorama band
   ============================================================ */
.panorama{position:relative;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-lg)}
.panorama svg{display:block;width:100%;height:auto}
.panorama-caption{position:absolute;left:0;right:0;bottom:0;padding:28px 32px;color:#fff;background:linear-gradient(transparent,rgba(12,35,64,.72))}
.panorama-caption b{display:block;font-size:clamp(18px,2.6vw,26px);font-weight:800;letter-spacing:-0.02em}
.panorama-caption span{font-size:14px;opacity:.9}

/* ============================================================
   Home — trainer profile
   ============================================================ */
.trainer{display:grid;grid-template-columns:.82fr 1fr;background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;box-shadow:var(--shadow-lg)}
.trainer-photo{margin:0;background:var(--bg-alt);border-right:1px solid var(--line);padding:32px;display:flex;flex-direction:column;justify-content:center;gap:14px}
.trainer-photo img{display:block;width:100%;height:auto;aspect-ratio:1/1;object-fit:cover;border-radius:12px;border:1px solid var(--line);box-shadow:var(--shadow)}
.trainer-photo figcaption{font-size:12.5px;color:var(--ink-mute)}
.trainer-body{padding:40px}
.trainer-body h3{font-size:clamp(22px,3vw,28px);font-weight:800;margin-bottom:6px}
.trainer-role{font-size:14px;font-weight:600;color:var(--accent);margin-bottom:18px}
.trainer-body p{font-size:15px;color:var(--ink-soft);margin-bottom:14px}
.trainer-creds{list-style:none;display:grid;gap:12px;margin-top:24px;padding-top:24px;border-top:1px solid var(--line)}
.trainer-creds li{display:flex;gap:11px;font-size:14px;color:var(--ink-soft);line-height:1.5}
.trainer-creds svg{flex-shrink:0;color:var(--accent);margin-top:3px}
.trainer-clients{grid-column:1/-1;border-top:1px solid var(--line);background:var(--bg-alt);padding:24px 40px}
.trainer-clients h4{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-mute);margin-bottom:10px}
.trainer-tags{display:flex;flex-wrap:wrap;gap:8px}
.trainer-tags span{border:1px solid var(--line);background:var(--bg-alt);border-radius:999px;padding:5px 13px;font-size:12.5px;color:var(--ink-soft)}

/* ============================================================
   Home — stats & testimonials
   ============================================================ */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:40px 24px;box-shadow:var(--shadow)}
.stat{text-align:center}
.stat b{display:block;font-size:32px;font-weight:800;letter-spacing:-0.02em;color:var(--accent)}
.stat span{font-size:13px;color:var(--ink-mute);text-transform:uppercase;letter-spacing:.08em;font-weight:600}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testi{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.testi .stars{color:#f59e0b;letter-spacing:2px;margin-bottom:14px;font-size:14px}
.testi p{font-size:15px;color:var(--ink-soft);margin-bottom:20px}
.testi-person{display:flex;align-items:center;gap:12px}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;flex-shrink:0}
.testi-person b{display:block;font-size:14px}
.testi-person span{font-size:12.5px;color:var(--ink-mute)}

/* ============================================================
   Final CTA
   ============================================================ */
.cta-final{background:var(--accent);border-radius:16px;padding:64px 32px;text-align:center;color:#fff}
.cta-final h2{font-size:clamp(26px,3.5vw,36px);font-weight:800;margin-bottom:12px}
.cta-final p{opacity:.9;max-width:480px;margin:0 auto 28px}
.cta-final .btn{background:#fff;color:var(--accent)}
.cta-final .btn:hover{box-shadow:0 8px 24px rgba(0,0,0,.2)}
.pl-about .cta-final{padding:56px 32px}
.pl-about .cta-final h2{font-size:clamp(24px,3vw,32px)}
.pl-about .cta-final p{max-width:460px;margin-bottom:26px}

/* ============================================================
   About — story, method, team, values
   ============================================================ */
.story-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.story-text h2{font-size:clamp(24px,3vw,32px);font-weight:800;margin-bottom:16px}
.story-text p{color:var(--ink-soft);margin-bottom:14px;font-size:15.5px}
.story-visual{border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-lg);overflow:hidden;background:#fff}
.story-visual svg{display:block;width:100%;height:auto}

.method-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);position:relative;transition:border-color .15s,box-shadow .15s}
.step:hover{border-color:#bae6fd;box-shadow:var(--shadow-lg)}
.step-num{width:36px;height:36px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;font-size:15px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.step h3{font-size:17px;font-weight:700;margin-bottom:8px}
.step p{font-size:14px;color:var(--ink-soft)}
.step .native{margin-top:14px;font-size:15px;color:var(--ink-mute)}
.step .native b{font-size:20px;color:var(--ink-soft);font-weight:600;margin-right:6px}

.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.member{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:32px 24px;text-align:center;box-shadow:var(--shadow);transition:border-color .15s,box-shadow .15s,transform .15s}
.member:hover{border-color:var(--accent);box-shadow:var(--shadow-lg);transform:translateY(-2px)}
.initials{width:72px;height:72px;border-radius:50%;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:22px;color:#fff;letter-spacing:.02em}
.c1{background:linear-gradient(135deg,#0284c7,#0e7490)}
.c2{background:linear-gradient(135deg,#dc2626,#f59e0b)}
.c3{background:linear-gradient(135deg,#0369a1,#7c3aed)}
.c4{background:linear-gradient(135deg,#059669,#0ea5e9)}
.member h3{font-size:16px;font-weight:700;margin-bottom:4px}
.member .role{font-size:13px;color:var(--accent);font-weight:600;margin-bottom:10px}
.member p{font-size:13.5px;color:var(--ink-soft)}

.values-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.value{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);display:flex;gap:18px;transition:border-color .15s,box-shadow .15s}
.value:hover{border-color:#bae6fd;box-shadow:var(--shadow-lg)}
.value-icon{width:44px;height:44px;flex-shrink:0;border-radius:10px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center}
.value h3{font-size:16px;font-weight:700;margin-bottom:6px}
.value p{font-size:14px;color:var(--ink-soft)}

/* ============================================================
   Contact — form, info card, FAQ
   ============================================================ */
.contact-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:32px;align-items:start}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:36px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:20px}
label{display:block;font-size:13.5px;font-weight:600;margin-bottom:6px}
input,select,textarea{width:100%;padding:11px 14px;border:1px solid var(--line);border-radius:8px;font-family:inherit;font-size:15px;color:var(--ink);background:#fff;transition:border-color .15s,box-shadow .15s}
input:hover,select:hover,textarea:hover{border-color:#bae6fd}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(2,132,199,.12)}
textarea{resize:vertical;min-height:120px}
.pl-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form-note{font-size:13px;color:var(--ink-mute);margin-top:14px}
.notice{margin-bottom:22px;border-radius:8px;padding:14px 16px;font-size:14.5px;font-weight:500;display:flex;gap:10px;align-items:flex-start}
.notice svg{flex-shrink:0;margin-top:1px}
.notice-ok{background:#ecfdf5;border:1px solid #a7f3d0;color:#047857}
.notice-err{background:var(--red-soft);border:1px solid #fecaca;color:#b91c1c}

.info-art{display:block;width:100%;height:auto;border-radius:8px;margin-bottom:20px;border:1px solid var(--line)}
.info-item{display:flex;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}
.info-item:last-child{border-bottom:none}
.info-icon{width:40px;height:40px;flex-shrink:0;border-radius:10px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center}
.info-item h3{font-size:14px;font-weight:700;margin-bottom:2px}
.info-item p,.info-item a{font-size:14px;color:var(--ink-soft)}
.info-item a:hover{color:var(--accent)}
.hours{margin-top:20px;background:var(--bg-alt);border:1px solid var(--line);border-radius:8px;padding:14px 16px;font-size:13.5px;color:var(--ink-mute)}
.hours b{color:var(--ink)}

.faq-wrap{max-width:760px;margin:0 auto}
details{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;box-shadow:var(--shadow);transition:border-color .15s,box-shadow .15s}
details:hover{border-color:#bae6fd}
details[open]{border-color:var(--accent);box-shadow:var(--shadow-lg)}
summary{cursor:pointer;padding:18px 22px;font-weight:600;font-size:15.5px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";font-size:20px;font-weight:500;color:var(--accent);flex-shrink:0;transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details .answer{padding:0 22px 20px;font-size:14.5px;color:var(--ink-soft)}

/* ============================================================
   Generic WordPress page/post content
   ============================================================ */
.entry-content{max-width:760px;margin:0 auto;font-size:16px;color:var(--ink-soft)}
.entry-content h2{font-size:26px;font-weight:800;color:var(--ink);margin:32px 0 12px}
.entry-content h3{font-size:20px;font-weight:700;color:var(--ink);margin:26px 0 10px}
.entry-content p{margin-bottom:16px}
.entry-content ul,.entry-content ol{margin:0 0 16px 22px}
.entry-content li{margin-bottom:8px}
.entry-content a{color:var(--accent);font-weight:500}
.entry-content img{border-radius:var(--radius)}
.post-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.post-card h2{font-size:19px;font-weight:700;margin-bottom:8px}
.post-card .meta{font-size:13px;color:var(--ink-mute);margin-bottom:12px}
.post-card p{font-size:14px;color:var(--ink-soft)}

/* ============================================================
   Footer
   ============================================================ */
footer.site-footer{border-top:1px solid var(--line);background:var(--bg-alt);padding:56px 0 32px;margin-top:80px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.foot-brand p{font-size:14px;color:var(--ink-mute);max-width:260px;margin-top:12px}
footer.site-footer h4{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--ink-mute);margin-bottom:16px}
footer.site-footer ul{list-style:none}
footer.site-footer ul li{margin-bottom:10px}
footer.site-footer ul a{font-size:14px;color:var(--ink-soft);transition:color .15s}
footer.site-footer ul a:hover{color:var(--accent)}
.foot-bottom{border-top:1px solid var(--line);padding-top:24px;font-size:13px;color:var(--ink-mute);text-align:center}

/* ============================================================
   Fade-in on scroll
   ============================================================ */
.fade{opacity:0;transform:translateY(12px);transition:opacity .5s ease,transform .5s ease}
.fade.visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.fade{opacity:1;transform:none;transition:none}}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-text{text-align:center}
  .hero-text > p{margin-left:auto;margin-right:auto}
  .hero-actions,.hero-phrases{justify-content:center}
  .lang-grid,.testi-grid,.feat-grid{grid-template-columns:1fr 1fr}
  .stats{grid-template-columns:1fr 1fr;gap:32px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .trainer{grid-template-columns:1fr}
  .trainer-photo{border-right:0;border-bottom:1px solid var(--line);padding:24px}
  .trainer-photo img{aspect-ratio:4/3;object-position:center 45%}
  .trainer-body{padding:32px 28px}
  .trainer-clients{padding:24px 28px}
  .method-grid,.team-grid{grid-template-columns:1fr 1fr}
  .story-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
  .post-list{grid-template-columns:1fr 1fr}
}
@media (max-width:640px){
  .hamburger{display:block}
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;padding:16px 24px;gap:4px;box-shadow:var(--shadow-lg)}
  .nav-links.open{display:flex}
  .nav-links a{display:block}
  .nav-cta{margin:8px 0 0}
  .lang-grid,.testi-grid,.feat-grid{grid-template-columns:1fr}
  .method-grid,.team-grid,.values-grid{grid-template-columns:1fr}
  .post-list{grid-template-columns:1fr}
  section{padding:56px 0}
  .hero{padding:56px 0}
  .page-hero{padding:64px 0 48px}
  .pl-contact .page-hero{padding:64px 0 40px}
  .form-row{grid-template-columns:1fr}
  .card{padding:24px}
}