/*
Theme Name: NextSkillTh Academy
Theme URI: https://nextskillth.com
Author: NextSkillTh
Author URI: https://nextskillth.com
Description: ธีม WordPress สำหรับเว็บสอนเขียนโปรแกรมออนไลน์ NextSkillTh ครอบคลุมคอร์ส Web, Mobile, Backend และฐานข้อมูล ดีไซน์ one-page landing พร้อมใช้งาน
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: nextskillth
*/

/* ==========================================================================
   NextSkillTh Academy landing page styles
   ========================================================================== */

:root {
  --color-primary: #4f46e5;
  --color-primary-dark: #4338ca;
  --color-accent: #84cc16;
  --color-ink: #12132a;
  --color-body: #4a4d68;
  --color-muted: #82859f;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f6fb;
  --color-border: #e6e7f3;
  --color-success: #1fa971;
  --color-code-bg: #1e1b3a;

  --font-heading: 'Kanit', 'Noto Sans Thai', sans-serif;
  --font-body: 'IBM Plex Sans Thai', 'Kanit', sans-serif;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-sm: 0 2px 8px rgba(20, 22, 43, 0.06);
  --shadow-md: 0 12px 32px rgba(20, 22, 43, 0.10);
  --shadow-lg: 0 24px 60px rgba(20, 22, 43, 0.16);

  --container-w: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-body);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--color-ink);
  line-height: 1.3;
  margin: 0 0 .5em;
}

h1 { font-size: clamp(2rem, 4vw, 3.1rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }

p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-ink);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  z-index: 999;
}
.skip-link:focus { left: 0; }

.eyebrow {
  display: inline-block;
  font-weight: 600;
  font-size: .85rem;
  letter-spacing: .04em;
  color: var(--color-primary);
  margin: 0 0 .6em;
}

.text-gradient {
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 1.5px solid transparent;
  transition: transform .15s ease, box-shadow .15s ease, background-color .15s ease, color .15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn-lg { padding: 15px 28px; font-size: 1rem; }
.btn-block { width: 100%; }

.btn-primary {
  background: linear-gradient(90deg, var(--color-primary), #7c6ff0);
  color: #fff;
  box-shadow: 0 10px 24px rgba(79, 70, 229, .32);
}
.btn-primary:hover { box-shadow: 0 14px 30px rgba(79, 70, 229, .4); }

.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-ink);
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }

.btn-ghost {
  background: transparent;
  color: var(--color-body);
  padding: 10px 16px;
}
.btn-ghost:hover { color: var(--color-primary); }

.btn-light { background: #fff; color: var(--color-primary-dark); }
.btn-outline-light { border-color: rgba(255,255,255,.55); color: #fff; }
.btn-outline-light:hover { border-color: #fff; }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 76px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-ink);
  margin-right: auto;
}
.brand-accent { color: var(--color-primary); }
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, #4ade80 0%, #3b82f6 55%, #8b5cf6 100%);
  color: #fff;
  box-shadow: 0 6px 18px rgba(88, 80, 232, .38), 0 2px 6px rgba(74, 222, 128, .2);
  position: relative;
  overflow: hidden;
}
.brand-mark::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 28% 22%, rgba(255,255,255,.55), transparent 55%);
}
.brand-mark-letter {
  position: relative;
  z-index: 1;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.15rem;
  line-height: 1;
  color: #fff;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-weight: 500;
  font-size: .95rem;
}
.main-nav a {
  position: relative;
  color: var(--color-body);
  padding: 4px 0;
  letter-spacing: .01em;
  transition: color .15s ease;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: right .2s ease;
}
.main-nav a:hover { color: var(--color-ink); }
.main-nav a:hover::after { right: 0; }

.header-actions { display: flex; align-items: center; gap: 8px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px; height: 40px;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border: none;
  border-radius: 10px;
  transition: background-color .15s ease;
}
.nav-toggle:hover { background: var(--color-border); }
.nav-toggle span {
  width: 20px; height: 2px;
  background: var(--color-ink);
  border-radius: 999px;
  transition: transform .2s ease, opacity .2s ease;
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
  padding: 76px 0 40px;
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(79,70,229,.10), transparent 60%),
    radial-gradient(800px 400px at 0% 10%, rgba(132,204,22,.10), transparent 60%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 56px;
  align-items: center;
}

.hero-sub { font-size: 1.05rem; max-width: 52ch; }

.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin: 28px 0 22px; }

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: .88rem;
  color: var(--color-muted);
}
.hero-trust li { display: flex; align-items: center; gap: 6px; }
.hero-trust li::before {
  content: "";
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-success);
}

/* ---- Hero visual (dashboard mockup) ---- */
.hero-visual { position: relative; }

.mockup-window {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
  overflow: hidden;
  transform: rotate(1deg);
}

.mockup-bar {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  background: var(--color-bg-alt);
  border-bottom: 1px solid var(--color-border);
}
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.dot-r { background: #ff6259; }
.dot-y { background: #ffbd2e; }
.dot-g { background: #28c840; }

.mockup-body { display: flex; min-height: 300px; }

.mockup-sidebar {
  width: 56px;
  background: var(--color-bg-alt);
  border-right: 1px solid var(--color-border);
  padding: 16px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}
.ms-item { width: 26px; height: 26px; border-radius: 8px; background: #dedcfa; }
.ms-item.ms-active { background: var(--color-primary); }

.mockup-main { flex: 1; padding: 0; background: var(--color-code-bg); }

.code-editor { padding: 22px 24px; font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace; font-size: .84rem; line-height: 1.9; }
.code-line { display: flex; gap: 16px; white-space: pre; color: #b9b8e0; }
.code-line .ln { color: #56537f; width: 16px; flex-shrink: 0; text-align: right; user-select: none; }
.code-kw { color: #c084fc; }
.code-fn { color: #7dd3fc; }
.code-str { color: #a3e635; }
.code-cm { color: #56537f; font-style: italic; }
.code-tag { color: #f472b6; }

.progress-card {
  margin: 18px 24px 22px;
  background: rgba(255,255,255,.06);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
}
.progress-card .mm-label { color: #9c9ac2; font-size: .72rem; }
.progress-card .mm-value { color: #fff; font-family: var(--font-heading); font-weight: 700; font-size: 1.05rem; margin: 4px 0 10px; }
.progress-bar { height: 8px; border-radius: 999px; background: rgba(255,255,255,.12); overflow: hidden; }
.progress-bar span { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--color-accent), #a3e635); }

.float-card {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  padding: 10px 14px;
  border-radius: 999px;
  box-shadow: var(--shadow-md);
  font-size: .82rem;
  font-weight: 600;
  color: var(--color-ink);
}
.float-card-1 { top: -16px; right: 12px; }
.float-card-2 { bottom: -18px; left: -10px; }

/* ==========================================================================
   Logo strip
   ========================================================================== */
.logo-strip { padding: 36px 0; border-bottom: 1px solid var(--color-border); }
.logo-strip-label {
  text-align: center;
  font-size: .85rem;
  color: var(--color-muted);
  margin-bottom: 18px;
}
.logo-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 32px;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-muted);
  opacity: .8;
}

/* ==========================================================================
   Section shared
   ========================================================================== */
.section { padding: 88px 0; }
.section-alt { background: var(--color-bg-alt); }

.section-head { max-width: 640px; margin: 0 auto 48px; text-align: center; }
.section-head .section-sub { color: var(--color-muted); }
.section-head h2 { margin-bottom: .4em; }

/* ==========================================================================
   Features
   ========================================================================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: box-shadow .2s ease, transform .2s ease;
}
.feature-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }

.feature-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(79,70,229,.14), rgba(132,204,22,.14));
  color: var(--color-primary);
  margin-bottom: 16px;
}

.feature-card p { color: var(--color-muted); margin: 0; font-size: .93rem; }

/* ==========================================================================
   Showcase
   ========================================================================== */
.showcase-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 64px;
  align-items: center;
}

.checklist { margin: 20px 0 28px; display: flex; flex-direction: column; gap: 12px; }
.checklist li {
  position: relative;
  padding-left: 30px;
  color: var(--color-body);
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0; top: 4px;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: rgba(31,169,113,.15);
}
.checklist li::after {
  content: "";
  position: absolute;
  left: 5px; top: 9px;
  width: 8px; height: 4px;
  border-left: 2px solid var(--color-success);
  border-bottom: 2px solid var(--color-success);
  transform: rotate(-45deg);
}

/* device mockup */
.device-frame {
  max-width: 300px;
  margin: 0 auto;
  background: var(--color-ink);
  border-radius: 36px;
  padding: 14px;
  box-shadow: var(--shadow-lg);
}
.device-notch {
  width: 70px; height: 18px;
  background: var(--color-ink);
  border-radius: 0 0 12px 12px;
  margin: 0 auto;
  position: relative;
  top: 4px;
}
.device-screen {
  background: #fff;
  border-radius: 24px;
  padding: 16px;
  min-height: 420px;
}
.ds-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.ds-search { width: 65%; height: 34px; border-radius: 10px; background: var(--color-bg-alt); }
.ds-avatar { width: 34px; height: 34px; border-radius: 50%; background: linear-gradient(135deg, var(--color-primary), var(--color-accent)); }

.ds-video { aspect-ratio: 16/9; border-radius: 14px; background: linear-gradient(135deg, var(--color-primary), #7c6ff0); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; }
.ds-play { width: 44px; height: 44px; border-radius: 50%; background: rgba(255,255,255,.25); display: flex; align-items: center; justify-content: center; }
.ds-play::after { content: ""; border-style: solid; border-width: 7px 0 7px 11px; border-color: transparent transparent transparent #fff; margin-left: 3px; }

.ds-lesson-list { display: flex; flex-direction: column; gap: 10px; }
.ds-lesson {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--color-bg-alt);
  font-size: .78rem;
  color: var(--color-body);
}
.ds-lesson.done { background: rgba(132,204,22,.12); color: var(--color-ink); font-weight: 600; }
.ds-lesson-dot { width: 18px; height: 18px; border-radius: 50%; flex-shrink: 0; background: #fff; border: 2px solid var(--color-border); }
.ds-lesson.done .ds-lesson-dot { background: var(--color-accent); border-color: var(--color-accent); }

.ds-cart { border-top: 1px dashed var(--color-border); padding-top: 14px; }
.ds-cart-total {
  display: flex; justify-content: space-between; align-items: center;
  margin: 14px 0; font-family: var(--font-heading); color: var(--color-ink);
}
.ds-pay-btn {
  background: linear-gradient(90deg, var(--color-primary), #7c6ff0);
  color: #fff;
  text-align: center;
  font-weight: 600;
  padding: 12px;
  border-radius: 12px;
  font-size: .9rem;
}

/* ==========================================================================
   Steps
   ========================================================================== */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.step { text-align: center; padding: 0 12px; }
.step-num {
  width: 46px; height: 46px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
}
.step p { color: var(--color-muted); font-size: .93rem; }

/* ==========================================================================
   Pricing
   ========================================================================== */
.billing-toggle {
  display: inline-flex;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 4px;
  margin-top: 8px;
}
.toggle-btn {
  border: none;
  background: transparent;
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 600;
  font-size: .88rem;
  color: var(--color-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.toggle-btn.active { background: var(--color-ink); color: #fff; }
.save-badge {
  font-size: .68rem;
  background: rgba(31,169,113,.18);
  color: var(--color-success);
  padding: 2px 7px;
  border-radius: 999px;
}
.toggle-btn.active .save-badge { background: rgba(255,255,255,.18); color: #b7f5da; }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.price-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
}
.price-card.featured {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-10px);
}
.price-badge {
  position: absolute;
  top: -13px; left: 28px;
  background: var(--color-primary);
  color: #fff;
  font-size: .72rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}
.price-desc { color: var(--color-muted); font-size: .88rem; }
.price-value { display: flex; align-items: baseline; gap: 6px; margin: 14px 0 22px; }
.price-amount { font-family: var(--font-heading); font-size: 2.1rem; font-weight: 700; color: var(--color-ink); }
.price-period { color: var(--color-muted); font-size: .9rem; }

.price-features { display: flex; flex-direction: column; gap: 12px; margin-bottom: 26px; flex: 1; }
.price-features li {
  position: relative;
  padding-left: 26px;
  font-size: .9rem;
  color: var(--color-body);
}
.price-features li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* ==========================================================================
   Testimonials
   ========================================================================== */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 28px;
  margin: 0;
}
.stars { color: #f5b301; letter-spacing: 2px; margin-bottom: 12px; font-size: .95rem; }
.testimonial-card blockquote { margin: 0 0 20px; color: var(--color-ink); font-size: .96rem; }
.testimonial-card figcaption { display: flex; align-items: center; gap: 12px; }
.avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .85rem;
  flex-shrink: 0;
}
.testimonial-card figcaption div { display: flex; flex-direction: column; font-size: .85rem; }
.testimonial-card figcaption strong { color: var(--color-ink); font-size: .92rem; }
.testimonial-card figcaption span { color: var(--color-muted); }

/* ==========================================================================
   FAQ
   ========================================================================== */
.faq-container { max-width: 780px; }
.faq-list { display: flex; flex-direction: column; gap: 12px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: none;
  border: none;
  text-align: left;
  padding: 18px 22px;
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-ink);
  font-size: .98rem;
}
.faq-icon { flex-shrink: 0; color: var(--color-primary); transition: transform .2s ease; }
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(180deg); }

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .25s ease;
}
.faq-answer p {
  overflow: hidden;
  min-height: 0;
  padding: 0 22px;
  color: var(--color-muted);
  font-size: .92rem;
  margin: 0;
}
.faq-item.open .faq-answer { grid-template-rows: 1fr; }
.faq-item.open .faq-answer p { padding: 0 22px 20px; }

/* ==========================================================================
   CTA banner
   ========================================================================== */
.cta-banner {
  background: linear-gradient(120deg, var(--color-primary), #4f42d6);
  color: #fff;
  padding: 64px 0;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-inner h2 { color: #fff; margin-bottom: .3em; }
.cta-inner p { color: rgba(255,255,255,.85); margin: 0; max-width: 46ch; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer { background: var(--color-ink); color: rgba(255,255,255,.65); padding: 64px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .brand { color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: .88rem; max-width: 30ch; }
.footer-col h4 { color: #fff; font-size: .88rem; margin-bottom: 16px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; font-size: .88rem; }
.footer-col a:hover { color: #fff; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
  font-size: .82rem;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-legal { display: flex; gap: 20px; }
.footer-legal a:hover { color: #fff; }

/* ==========================================================================
   Course grid (replaces generic feature grid on courses section)
   ========================================================================== */
.course-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.course-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow .2s ease, transform .2s ease;
  display: flex;
  flex-direction: column;
}
.course-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.course-thumb {
  height: 160px;
  background:
    radial-gradient(120px 120px at 85% -10%, rgba(255,255,255,.22), transparent 60%),
    radial-gradient(160px 160px at -10% 110%, rgba(255,255,255,.14), transparent 60%),
    linear-gradient(135deg, var(--color-primary), #7c6ff0);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.course-thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.28) 1.5px, transparent 1.5px);
  background-size: 18px 18px;
  opacity: .5;
  mask-image: linear-gradient(135deg, #000 10%, transparent 65%);
}
.course-thumb-img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: 0;
}
.course-thumb-img + svg,
.course-thumb:has(.course-thumb-img)::before { display: none; }
.course-thumb:has(.course-thumb-img)::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15,15,25,.15), rgba(15,15,25,.55) 85%);
}
.course-thumb svg {
  position: relative;
  z-index: 1;
  width: 52px; height: 52px;
  filter: drop-shadow(0 6px 14px rgba(0,0,0,.2));
}
.course-thumb.thumb-mobile     { background: radial-gradient(120px 120px at 85% -10%, rgba(255,255,255,.22), transparent 60%), radial-gradient(160px 160px at -10% 110%, rgba(255,255,255,.14), transparent 60%), linear-gradient(135deg, #0ea5a4, #34d399); }
.course-thumb.thumb-backend    { background: radial-gradient(120px 120px at 85% -10%, rgba(255,255,255,.22), transparent 60%), radial-gradient(160px 160px at -10% 110%, rgba(255,255,255,.14), transparent 60%), linear-gradient(135deg, #f97362, #fb923c); }
.course-thumb.thumb-database   { background: radial-gradient(120px 120px at 85% -10%, rgba(255,255,255,.22), transparent 60%), radial-gradient(160px 160px at -10% 110%, rgba(255,255,255,.14), transparent 60%), linear-gradient(135deg, #2563eb, #22d3ee); }
.course-level {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 1;
  background: rgba(15,15,20,.35);
  backdrop-filter: blur(4px);
  color: #fff;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 999px;
}
.course-body { padding: 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.course-meta { display: flex; gap: 14px; font-size: .78rem; color: var(--color-muted); }
.course-meta span { display: flex; align-items: center; gap: 5px; }
.course-body p { color: var(--color-muted); font-size: .9rem; margin: 0; flex: 1; }
.course-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 6px; }
.course-price { font-family: var(--font-heading); font-weight: 700; color: var(--color-ink); }
.course-price small { color: var(--color-muted); font-weight: 400; font-size: .75rem; }

/* ==========================================================================
   Curriculum timeline
   ========================================================================== */
.curriculum-list { display: flex; flex-direction: column; gap: 0; max-width: 680px; margin: 0 auto; }
.curriculum-item {
  display: flex;
  gap: 20px;
  padding: 0 0 32px;
  position: relative;
}
.curriculum-item:last-child { padding-bottom: 0; }
.curriculum-item::before {
  content: "";
  position: absolute;
  left: 19px; top: 40px; bottom: 0;
  width: 2px;
  background: var(--color-border);
}
.curriculum-item:last-child::before { display: none; }
.curriculum-num {
  flex-shrink: 0;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .9rem;
  z-index: 1;
}
.curriculum-body h3 { margin-bottom: 4px; }
.curriculum-body p { color: var(--color-muted); font-size: .9rem; margin: 0; }

/* ==========================================================================
   Instructor
   ========================================================================== */
.instructor-card {
  display: flex;
  gap: 32px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.instructor-avatar {
  width: 120px; height: 120px;
  border-radius: 50%;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 2rem;
}
.instructor-info h3 { margin-bottom: 2px; }
.instructor-role { color: var(--color-primary); font-weight: 600; font-size: .88rem; margin-bottom: 12px; display: block; }
.instructor-info p { color: var(--color-muted); font-size: .93rem; }
.instructor-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.instructor-tags span {
  background: var(--color-bg-alt);
  color: var(--color-body);
  font-size: .78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
}

/* ==========================================================================
   Course detail page (Udemy-style hero: title left, video right)
   ========================================================================== */
.course-hero-section {
  padding: 56px 0 40px;
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(79,70,229,.08), transparent 60%),
    radial-gradient(800px 400px at 0% 10%, rgba(132,204,22,.08), transparent 60%);
}
.course-hero {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
}
.course-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  margin: 18px 0 26px;
  font-size: .92rem;
  color: var(--color-muted);
}
.course-hero-price {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--color-ink);
  font-size: 1.05rem;
}
.course-hero-video {
  position: relative;
  aspect-ratio: 16/9;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--color-code-bg);
}
.course-hero-video iframe,
.course-hero-video img {
  width: 100%; height: 100%;
  border: 0;
  object-fit: cover;
  display: block;
}
.course-hero-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), #7c6ff0);
}
.course-hero-placeholder svg { width: 72px; height: 72px; filter: drop-shadow(0 6px 14px rgba(0,0,0,.2)); }
.course-hero-placeholder.thumb-mobile   { background: linear-gradient(135deg, #0ea5a4, #34d399); }
.course-hero-placeholder.thumb-backend  { background: linear-gradient(135deg, #f97362, #fb923c); }
.course-hero-placeholder.thumb-database { background: linear-gradient(135deg, #2563eb, #22d3ee); }

.course-outline h2 { margin-top: 2.2em; }
.course-outline h2:first-child { margin-top: 0; }
.course-outline h3 { color: var(--color-primary); }
.course-outline ul { list-style: none; margin: 0 0 1.4em; padding: 0; }
.course-outline ul li {
  position: relative;
  padding-left: 28px;
  margin-bottom: 10px;
  color: var(--color-body);
}
.course-outline ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 8px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* ---- Blog listing: featured article card ---- */
.article-featured {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: stretch;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 48px;
  text-decoration: none;
  color: inherit;
  transition: box-shadow .2s ease, transform .2s ease;
}
.article-featured:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}
.article-featured-media {
  position: relative;
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary), #7c6ff0);
}
.article-featured-media::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.28) 1.5px, transparent 1.5px);
  background-size: 20px 20px;
  opacity: .5;
  mask-image: linear-gradient(135deg, #000 10%, transparent 65%);
}
.article-featured-media svg { position: relative; z-index: 1; width: 64px; height: 64px; filter: drop-shadow(0 6px 14px rgba(0,0,0,.2)); }
.article-featured-media.thumb-mobile   { background: linear-gradient(135deg, #0ea5a4, #34d399); }
.article-featured-media.thumb-backend  { background: linear-gradient(135deg, #f97362, #fb923c); }
.article-featured-media.thumb-database { background: linear-gradient(135deg, #2563eb, #22d3ee); }
.article-featured-body {
  display: flex;
  flex-direction: column;
  padding: 36px 40px 36px 0;
}
.article-featured-body h2 { margin: 0 0 12px; font-size: 1.7rem; }
.article-featured-body p { color: var(--color-muted); margin: 0; }
@media (max-width: 860px) {
  .article-featured { grid-template-columns: 1fr; }
  .article-featured-media { min-height: 200px; }
  .article-featured-body { padding: 24px; }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 960px) {
  .course-hero { grid-template-columns: 1fr; }
  .course-hero-media { order: -1; }
  .course-grid { grid-template-columns: repeat(2, 1fr); }
  .instructor-card { flex-direction: column; text-align: center; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; max-width: 480px; margin: 0 auto; }
  .showcase-grid { grid-template-columns: 1fr; }
  .showcase-visual { order: -1; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }
  .price-card.featured { transform: none; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .main-nav {
    position: absolute;
    top: 76px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 16px;
    display: none;
    box-shadow: var(--shadow-md);
  }
  .main-nav.open { display: flex; }
  .nav-toggle { display: flex; }
  .header-actions .btn-ghost { display: none; }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
}

@media (max-width: 600px) {
  .feature-grid { grid-template-columns: 1fr; }
  .cta-inner { text-align: center; justify-content: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-cta .btn { width: 100%; }
}

/* Code blocks inside article/course content, with a copy-to-clipboard button */
.entry-content pre {
  position: relative;
  background: var(--color-code-bg);
  color: #e7e8fa;
  border-radius: 12px;
  padding: 20px 22px;
  margin: 24px 0;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
}
.entry-content pre code {
  background: none;
  padding: 0;
  color: inherit;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  white-space: pre;
}
.entry-content :not(pre) > code {
  background: var(--color-bg-alt);
  color: var(--color-primary-dark);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.9em;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}
.entry-content pre.has-copy-btn { padding-top: 44px; }
.code-copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(255, 255, 255, 0.08);
  color: #e7e8fa;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.code-copy-btn:hover { background: rgba(255, 255, 255, 0.16); }
.code-copy-btn.copied {
  background: var(--color-success);
  border-color: var(--color-success);
  color: #fff;
}

/* Contact Form 7 — professional card-style form */
.wpcf7 {
  display: block;
  max-width: 620px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}
.wpcf7-form p { margin: 0 0 22px; }
.wpcf7-form label {
  display: block;
  font-weight: 600;
  color: var(--color-ink);
  font-size: .95rem;
  margin-bottom: 8px;
}
.wpcf7-form-control-wrap { display: block; }
.wpcf7-form-control.wpcf7-text,
.wpcf7-form-control.wpcf7-email,
.wpcf7-form-control.wpcf7-textarea {
  width: 100%;
  font-family: inherit;
  font-size: 1rem;
  color: var(--color-ink);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  transition: border-color .15s ease, box-shadow .15s ease, background .15s ease;
}
.wpcf7-form-control.wpcf7-textarea { min-height: 140px; resize: vertical; }
.wpcf7-form-control.wpcf7-text:focus,
.wpcf7-form-control.wpcf7-email:focus,
.wpcf7-form-control.wpcf7-textarea:focus {
  outline: none;
  background: #fff;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(79, 70, 229, .12);
}
.wpcf7-form-control.wpcf7-not-valid {
  border-color: #e0435c;
  background: #fff;
}
.wpcf7-not-valid-tip {
  color: #e0435c;
  font-size: .85rem;
  font-weight: 500;
  margin-top: 6px;
}
.wpcf7-form .wpcf7-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 15px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  cursor: pointer;
  background: linear-gradient(90deg, var(--color-primary), #7c6ff0);
  color: #fff;
  box-shadow: 0 10px 24px rgba(79, 70, 229, .32);
  transition: box-shadow .15s ease, transform .15s ease;
}
.wpcf7-form .wpcf7-submit:hover { box-shadow: 0 14px 30px rgba(79, 70, 229, .4); transform: translateY(-1px); }
.wpcf7-form .wpcf7-submit:disabled { opacity: .6; cursor: not-allowed; transform: none; }
.wpcf7-spinner { margin-left: 10px; }
.wpcf7-response-output {
  margin: 24px 0 0;
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
}
.wpcf7-form.sent .wpcf7-response-output {
  background: rgba(31, 169, 113, .1);
  border-color: var(--color-success);
  color: var(--color-success);
}
.wpcf7-form.invalid .wpcf7-response-output,
.wpcf7-form.failed .wpcf7-response-output,
.wpcf7-form.aborted .wpcf7-response-output,
.wpcf7-form.spam .wpcf7-response-output {
  background: rgba(224, 67, 92, .08);
  border-color: #e0435c;
  color: #e0435c;
}
@media (max-width: 600px) {
  .wpcf7 { padding: 28px 20px; }
}