/* ============================================
   暖字表達寫作班 — 官方網站樣式表
   色彩系統：
     主色 暖橘 #E8834A
     底色 米白 #FDF6EE
     輔色 淺橘 #FDEEDE
     文字 深褐 #3D2B1F
============================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+TC:wght@300;400;500;600;700&family=Noto+Sans+TC:wght@300;400;500&display=swap');

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --orange:  #E8834A;
  --orange-light: #F0A070;
  --cream:   #FDF6EE;
  --peach:   #FDEEDE;
  --brown:   #3D2B1F;
  --brown-light: #7A5C48;
  --white:   #FFFFFF;
  --shadow:  0 4px 20px rgba(61, 43, 31, 0.08);
  --shadow-hover: 0 8px 32px rgba(61, 43, 31, 0.15);
  --radius:  16px;
  --radius-sm: 10px;
  --transition: 0.25s ease;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: 'Noto Serif TC', 'Georgia', serif;
  background-color: var(--cream);
  color: var(--brown);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--orange); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--orange-light); }

/* ── Typography ── */
h1, h2, h3, h4 { font-weight: 600; line-height: 1.4; }
h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.5vw, 1.4rem); }
p  { margin-bottom: 1rem; }

.text-orange { color: var(--orange); }
.text-center { text-align: center; }

/* ── Layout ── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}
.section--alt {
  background: var(--peach);
}

/* ── Section Header ── */
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}
.section-header h2 {
  color: var(--brown);
  margin-bottom: 0.5rem;
}
.section-header p {
  color: var(--brown-light);
  font-size: 1rem;
}
.section-header .underline {
  display: inline-block;
  width: 60px;
  height: 3px;
  background: var(--orange);
  border-radius: 2px;
  margin: 0.75rem auto 0;
}

/* ── Navigation ── */
.site-nav {
  background: var(--white);
  box-shadow: 0 2px 12px rgba(61, 43, 31, 0.06);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
.nav-logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--brown);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.nav-logo-img {
  height: 44px;
  width: auto;
  display: block;
}
.nav-logo-text { color: var(--brown); }
.nav-links {
  display: flex;
  list-style: none;
  gap: 2rem;
}
.nav-links a {
  color: var(--brown);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* Hamburger */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--brown);
  margin: 5px 0;
  transition: all var(--transition);
  border-radius: 2px;
}

@media (max-width: 768px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    gap: 0;
    box-shadow: 0 4px 16px rgba(61,43,31,0.1);
  }
  .nav-links.open { display: flex; }
  .nav-links li { border-bottom: 1px solid var(--peach); }
  .nav-links a {
    display: block;
    padding: 1rem 1.5rem;
    border-bottom: none;
  }
}

/* ── Hero ── */
.hero {
  background: linear-gradient(135deg, #E8834A 0%, #F0A070 50%, #FDEEDE 100%);
  padding: 6rem 0 5rem;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}
.hero-text { color: var(--white); }
.hero-tag {
  display: inline-block;
  background: rgba(255,255,255,0.25);
  color: var(--white);
  font-size: 0.85rem;
  padding: 0.3rem 0.9rem;
  border-radius: 20px;
  margin-bottom: 1.2rem;
  letter-spacing: 0.05em;
}
.hero-text h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin-bottom: 1rem;
  line-height: 1.3;
}
.hero-text .subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  line-height: 1.9;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero-image-placeholder {
  width: 320px;
  height: 380px;
  background: rgba(255,255,255,0.2);
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.8);
  font-size: 0.9rem;
  gap: 1rem;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.3);
}
.hero-image-placeholder svg {
  opacity: 0.6;
}
.hero-teacher-img {
  width: 320px;
  height: 380px;
  object-fit: cover;
  object-position: center top;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(61,43,31,0.25);
}
.hero-main-img {
  width: 340px;
  height: 340px;
  object-fit: cover;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(61,43,31,0.2);
}
.hero-photo {
  width: 320px;
  height: 380px;
  object-fit: cover;
  border-radius: 24px;
  box-shadow: 0 20px 60px rgba(61,43,31,0.25);
}

@media (max-width: 768px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
  }
  .hero-cta { justify-content: center; }
  .hero-image-placeholder, .hero-photo { width: 260px; height: 300px; }
  .hero-main-img { width: 280px; height: 280px; }
  .hero-image { order: -1; }
}

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border-radius: 50px;
  font-weight: 500;
  font-size: 0.95rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  font-family: inherit;
  letter-spacing: 0.02em;
}
.btn-primary {
  background: var(--white);
  color: var(--orange);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}
.btn-primary:hover {
  background: var(--cream);
  color: var(--orange);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.16);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.7);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  color: var(--white);
  border-color: var(--white);
}
.btn-orange {
  background: var(--orange);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(232,131,74,0.35);
}
.btn-orange:hover {
  background: #D4723A;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(232,131,74,0.45);
}

/* ── Values / Philosophy ── */
.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}
.value-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}
.value-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.value-icon {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}
.value-card h3 {
  color: var(--orange);
  margin-bottom: 0.5rem;
  font-size: 1.1rem;
}
.value-card p {
  color: var(--brown-light);
  font-size: 0.92rem;
  margin: 0;
}

/* ── Cards (Blog & Works) ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}
.card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}
.card-body {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: 0.82rem;
  color: var(--brown-light);
}
.card-tag {
  background: var(--peach);
  color: var(--orange);
  padding: 0.2rem 0.7rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}
.card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
  color: var(--brown);
}
.card p {
  color: var(--brown-light);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 0;
  flex: 1;
}
.card-footer {
  padding: 1rem 1.75rem;
  border-top: 1px solid var(--peach);
}
.card-link {
  color: var(--orange);
  font-size: 0.9rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}
.card-link::after { content: '→'; transition: transform var(--transition); }
.card-link:hover::after { transform: translateX(4px); }

/* ── Testimonials ── */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}
.testimonial {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  position: relative;
}
.testimonial::before {
  content: '"';
  position: absolute;
  top: 1rem;
  left: 1.25rem;
  font-size: 4rem;
  color: var(--peach);
  font-family: Georgia, serif;
  line-height: 1;
}
.testimonial-text {
  color: var(--brown);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  padding-top: 1.5rem;
}
.testimonial-author {
  color: var(--brown-light);
  font-size: 0.85rem;
  font-style: italic;
}

/* ── LINE Float Button ── */
.line-float {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 200;
}
.line-float a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: #06C755;
  color: var(--white);
  padding: 0.85rem 1.4rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 6px 24px rgba(6,199,85,0.4);
  transition: all var(--transition);
}
.line-float a:hover {
  background: #05B04B;
  color: var(--white);
  transform: translateY(-3px);
  box-shadow: 0 10px 32px rgba(6,199,85,0.5);
}
.line-float svg { width: 22px; height: 22px; }

/* ── Footer ── */
.site-footer {
  background: var(--brown);
  color: rgba(255,255,255,0.8);
  padding: 3rem 0 2rem;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}
.footer-brand h3 {
  color: var(--white);
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}
.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.7);
  margin: 0;
}
.footer-nav h4, .footer-contact h4 {
  color: var(--orange-light);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  letter-spacing: 0.05em;
}
.footer-nav ul {
  list-style: none;
}
.footer-nav li { margin-bottom: 0.5rem; }
.footer-nav a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--orange-light); }
.footer-contact p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 0.5rem;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
}

@media (max-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

/* ── Post / Work Content ── */
.post-hero {
  background: linear-gradient(135deg, var(--orange) 0%, #F0A070 100%);
  padding: 4rem 0 3rem;
  color: var(--white);
  text-align: center;
}
.post-hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  margin-bottom: 1rem;
}
.post-meta {
  font-size: 0.9rem;
  opacity: 0.85;
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.post-content {
  max-width: 740px;
  margin: 0 auto;
  padding: 3rem 1.5rem 5rem;
}
.post-content p { margin-bottom: 1.5rem; font-size: 1.05rem; line-height: 1.9; }
.post-content h2 { margin: 2.5rem 0 1rem; color: var(--orange); }
.post-content h3 { margin: 2rem 0 0.75rem; }
.post-content blockquote {
  border-left: 4px solid var(--orange);
  padding: 1rem 1.5rem;
  background: var(--peach);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--brown-light);
}

/* Work specific */
.work-author-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--peach);
  color: var(--orange);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  margin-top: 0.5rem;
}

/* Student works list */
.student-works-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  max-width: 720px;
  margin: 0 auto;
}
.student-work-item {
  background: var(--white);
  border-radius: var(--radius);
  border-left: 4px solid var(--orange);
  box-shadow: var(--shadow);
  padding: 2rem 2.25rem;
}
.student-work-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--peach);
  flex-wrap: wrap;
}
.student-work-title {
  font-size: 1.15rem;
  color: var(--brown);
  margin: 0;
}
.student-work-date {
  font-size: 0.85rem;
  color: var(--brown-light);
  white-space: nowrap;
}
.student-work-body {
  font-size: 1rem;
  line-height: 2;
  color: var(--brown);
}
.student-work-body p {
  margin-bottom: 1rem;
}
.student-work-body p:last-child {
  margin-bottom: 0;
}

/* ── About Page ── */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
}
.about-photo {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}
.about-photo-placeholder {
  background: var(--peach);
  border-radius: var(--radius);
  height: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--brown-light);
  gap: 0.75rem;
  font-size: 0.9rem;
}
.about-teacher-img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  object-position: center 60%;
  border-radius: var(--radius);
  box-shadow: var(--shadow-hover);
  display: block;
}
.about-text h2 { color: var(--orange); margin-bottom: 1.25rem; }
.about-text p { color: var(--brown); line-height: 1.9; }

.triangle-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin: 2rem auto;
  max-width: 480px;
}
.triangle-top {
  background: var(--orange);
  color: var(--white);
  padding: 1.2rem 2.5rem;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  text-align: center;
  width: 200px;
}
.triangle-bottom {
  display: flex;
  width: 100%;
}
.triangle-left, .triangle-right {
  flex: 1;
  padding: 1.2rem 1.5rem;
  text-align: center;
}
.triangle-left {
  background: var(--peach);
  border-radius: 0 0 0 var(--radius-sm);
}
.triangle-right {
  background: #FDE8D8;
  border-radius: 0 0 var(--radius-sm) 0;
}
.triangle-label { font-weight: 600; font-size: 1rem; color: var(--brown); }
.triangle-desc { font-size: 0.82rem; color: var(--brown-light); margin-top: 0.25rem; }

@media (max-width: 768px) {
  .about-intro { grid-template-columns: 1fr; gap: 2rem; }
}

/* ── Courses ── */
.course-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  border-left: 5px solid var(--orange);
  margin-bottom: 1.5rem;
}
.course-card h3 { color: var(--orange); margin-bottom: 0.75rem; }
.course-info {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.course-badge {
  background: var(--peach);
  color: var(--brown);
  padding: 0.3rem 0.8rem;
  border-radius: 20px;
  font-size: 0.83rem;
}

.faq-item {
  border-bottom: 1px solid var(--peach);
  padding: 1.25rem 0;
}
.faq-question {
  font-weight: 600;
  color: var(--brown);
  margin-bottom: 0.5rem;
  font-size: 1rem;
}
.faq-question::before { content: 'Q｜'; color: var(--orange); }
.faq-answer {
  color: var(--brown-light);
  font-size: 0.92rem;
  line-height: 1.8;
  padding-left: 1.5rem;
}

/* ── Contact ── */
.contact-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 3rem;
  box-shadow: var(--shadow);
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}
.contact-card .big-icon { font-size: 3.5rem; margin-bottom: 1rem; }
.contact-card h2 { margin-bottom: 1rem; }
.contact-card p {
  color: var(--brown-light);
  line-height: 1.8;
  margin-bottom: 2rem;
}
.btn-line {
  background: #06C755;
  color: var(--white);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.05rem;
  padding: 0.9rem 2.5rem;
  box-shadow: 0 6px 20px rgba(6,199,85,0.35);
}
.btn-line:hover {
  background: #05B04B;
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(6,199,85,0.45);
}

/* ── Works List ── */
.work-card .author-info {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--orange);
  font-size: 0.88rem;
  font-weight: 500;
  margin-top: 0.5rem;
}

/* ── Page Hero (non-home) ── */
.page-hero {
  background: linear-gradient(135deg, var(--orange) 0%, #F0A070 100%);
  padding: 4rem 0 3.5rem;
  text-align: center;
  color: var(--white);
}
.page-hero h1 { margin-bottom: 0.75rem; }
.page-hero p { opacity: 0.9; font-size: 1.05rem; max-width: 520px; margin: 0 auto; }

/* ── Utility ── */
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-0 { margin-bottom: 0 !important; }
.flex-center {
  display: flex;
  justify-content: center;
  margin-top: 2.5rem;
}

/* ── Mobile Optimizations (≤ 768px) ── */
@media (max-width: 768px) {
  /* 縮減 section 上下間距 */
  .section { padding: 3rem 0; }
  .section-header { margin-bottom: 2rem; }

  /* Hero */
  .hero { padding: 3.5rem 0 3rem; }
  .page-hero { padding: 2.5rem 0 2rem; }
  .post-hero { padding: 2.5rem 0 2rem; }

  /* Cards 強制單欄 */
  .cards-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }

  /* 聯絡卡 padding */
  .contact-card { padding: 2rem 1.5rem; }

  /* Post 內文底部 padding */
  .post-content { padding: 2rem 1.25rem 3rem; }

  /* 老師照片佔位高度 */
  .about-photo-placeholder { height: 240px; }

  /* LINE 浮動按鈕：縮成圓形圖示 */
  .line-float { bottom: 1.25rem; right: 1.25rem; }
  .line-float .line-label { display: none; }
  .line-float a { padding: 0.85rem; border-radius: 50%; gap: 0; }
}

/* ── Small Screen (≤ 480px) ── */
@media (max-width: 480px) {
  .container { padding: 0 1rem; }

  /* 核心理念也單欄 */
  .values-grid { grid-template-columns: 1fr; }

  /* 按鈕組直排 */
  .hero-cta { flex-direction: column; align-items: center; }
  .hero-cta .btn { width: 100%; max-width: 260px; text-align: center; }

  /* hero 圖佔位縮小 */
  .hero-image-placeholder, .hero-photo { width: 200px; height: 240px; }
  .hero-main-img { width: 240px; height: 240px; }
}