/* ============================================================
   AI 1day 集中研修 LP — Main Stylesheet
   Design: Flat / Modern / Clean
   ============================================================ */

/* ── Variables ─────────────────────────────────────────────── */
:root {
  --primary:       #4F6EF7;
  --primary-dark:  #3B55E0;
  --primary-light: #EEF2FF;
  --accent:        #06D6A0;
  --accent2:       #FF6B6B;
  --accent3:       #FFD166;
  --dark:          #1A1F36;
  --text:          #2D3748;
  --text-muted:    #718096;
  --border:        #E8EDF5;
  --bg:            #F5F7FF;
  --white:         #FFFFFF;

  /* Course tag colors */
  --lp:       #7C3AED;
  --banner:   #F43F8B;
  --notebook: #10B981;
  --gemini:   #F59E0B;
  --cloud:    #4F6EF7;
  --video:    #EF4444;

  --radius:   12px;
  --radius-sm: 6px;
  --shadow:   0 4px 24px rgba(79,110,247,.10);
  --shadow-lg: 0 8px 40px rgba(79,110,247,.16);

  --font-sans: 'Noto Sans JP', sans-serif;
  --font-en:   'Inter', sans-serif;

  --transition: .25s cubic-bezier(.4,0,.2,1);
}

/* ── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; font-family: inherit; border: none; background: none; }

/* ── Container ─────────────────────────────────────────────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.pc-only { display: inline; }

/* ── Section Base ───────────────────────────────────────────── */
.section { padding: 96px 0; }
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-en);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 900;
  color: var(--dark);
  line-height: 1.25;
  margin-bottom: 16px;
}
.section-desc {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 52px;
}

/* ── Buttons ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: .95rem;
  font-weight: 700;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #7B8FFF 100%);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(79,110,247,.35);
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(79,110,247,.45);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(79,110,247,.18);
}
.btn-white {
  background: var(--white);
  color: var(--primary);
  font-weight: 700;
}
.btn-white:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,255,255,.3);
}
.btn-full { width: 100%; justify-content: center; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: var(--shadow); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}
.logo {
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.logo-mark {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--primary);
}
.logo-sub {
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: .04em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}
.main-nav a {
  font-size: .875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
}
.main-nav a:not(.nav-cta)::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition);
}
.main-nav a:not(.nav-cta):hover::after { width: 100%; }
.main-nav a:not(.nav-cta):hover { color: var(--primary); }
.nav-cta {
  background: linear-gradient(135deg, var(--primary) 0%, #7B8FFF 100%);
  color: var(--white) !important;
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 700;
  transition: all var(--transition);
  box-shadow: 0 3px 10px rgba(79,110,247,.3);
}
.nav-cta:hover {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  transform: translateY(-1px);
  box-shadow: 0 5px 16px rgba(79,110,247,.4);
}
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 90vh;
  background: linear-gradient(145deg, #1A1F5E 0%, #2D3A9B 40%, #4F4DA8 70%, #7B4FBF 100%);
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 80px 0 100px;
}
.hero-bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.shape {
  position: absolute;
  border-radius: 50%;
  opacity: .18;
  background: radial-gradient(circle, var(--accent), transparent);
}
.shape-1 {
  width: 700px; height: 700px;
  top: -250px; right: -180px;
  background: radial-gradient(circle, #9BE8D8, transparent);
  animation: float 8s ease-in-out infinite;
}
.shape-2 {
  width: 350px; height: 350px;
  bottom: -100px; left: 3%;
  background: radial-gradient(circle, #FFD166, transparent);
  opacity: .15;
  animation: float 10s ease-in-out infinite 2s;
}
.shape-3 {
  width: 200px; height: 200px;
  top: 25%; left: 48%;
  background: radial-gradient(circle, #FF6B6B, transparent);
  opacity: .12;
  animation: float 6s ease-in-out infinite 1s;
}
.shape-4 {
  width: 120px; height: 120px;
  bottom: 20%; right: 15%;
  background: radial-gradient(circle, #C4B5FD, transparent);
  opacity: .2;
  animation: float 7s ease-in-out infinite 3s;
}
@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50%       { transform: translateY(-20px) scale(1.05); }
}
.hero-inner {
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(6,214,160,.18);
  color: #6EFFD8;
  border: 1px solid rgba(6,214,160,.35);
  padding: 7px 18px;
  border-radius: 100px;
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 28px;
}
.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4.4rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -.01em;
}
.hero-title .highlight {
  color: #7BFFD6;
  position: relative;
  text-shadow: 0 0 40px rgba(6,214,160,.4);
}
.hero-sub {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 600;
  color: rgba(255,255,255,.75);
  margin-bottom: 24px;
}
.hero-desc {
  font-size: 1rem;
  color: rgba(255,255,255,.65);
  line-height: 1.85;
  max-width: 600px;
  margin-bottom: 36px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 40px;
}
.meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.8);
  font-size: .9rem;
  font-weight: 500;
}
.meta-item i { color: #7BFFD6; font-size: 1rem; }
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.hero .btn-outline {
  border-color: rgba(255,255,255,.4);
  color: rgba(255,255,255,.85);
}
.hero .btn-outline:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.7);
}
.hero-scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.4);
  font-size: .7rem;
  letter-spacing: .1em;
  font-family: var(--font-en);
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,.4), transparent);
  animation: scrollDown 2s ease-in-out infinite;
}
@keyframes scrollDown {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* wave divider */
.section-wave {
  display: block;
  line-height: 0;
  margin-bottom: -2px;
}
.section-wave svg {
  width: 100%;
  height: 60px;
  display: block;
}

/* ============================================================
   OVERVIEW
   ============================================================ */
.overview { background: linear-gradient(180deg, #F5F7FF 0%, #FFFFFF 100%); }
.overview-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.overview-course-name {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  border: 1.5px solid rgba(79,110,247,.2);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 36px;
}
.overview-course-name i { font-size: .95rem; }
.overview-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  border: 1.5px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}
.overview-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 12px 12px 0 0;
}
.overview-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}
.highlight-card {
  background: linear-gradient(135deg, var(--primary) 0%, #7B8FFF 100%);
  border-color: transparent;
}
.highlight-card::before { background: rgba(255,255,255,.3); }
.highlight-card .overview-icon {
  background: rgba(255,255,255,.92);
  color: var(--primary);
}
.highlight-card .overview-label,
.highlight-card .overview-value { color: var(--white); }
.overview-icon {
  font-size: 1.8rem;
  color: var(--primary);
  margin-bottom: 14px;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
}
.overview-label {
  font-size: .875rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 10px;
}
.overview-value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.5;
}
.overview-value small {
  font-size: .875rem;
  font-weight: 400;
  opacity: .75;
}
.price-val {
  font-family: var(--font-en);
  font-size: 1.4rem !important;
  font-weight: 800;
  line-height: 1.2;
  white-space: nowrap;
}
.price-unit {
  font-size: .75rem;
  font-weight: 500;
  opacity: .85;
  margin-left: 2px;
  white-space: nowrap;
}

/* ============================================================
   RECOMMEND
   ============================================================ */
.recommend {
  background: var(--white);
  position: relative;
  overflow: hidden;
}
.recommend::before {
  content: '';
  position: absolute;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(79,110,247,.05), transparent);
  top: -200px; right: -200px;
  pointer-events: none;
}
.recommend::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(6,214,160,.05), transparent);
  bottom: -150px; left: -100px;
  pointer-events: none;
}
.recommend-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.recommend-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1.5px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  opacity: 0;
  transform: translateY(20px);
  position: relative;
  overflow: hidden;
}
.recommend-item.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .5s ease, transform .5s ease, box-shadow var(--transition), border-color var(--transition);
}
.recommend-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(79,110,247,.14);
  border-color: var(--primary);
}
.rec-icon {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-light) 0%, #E0E7FF 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.15rem;
  box-shadow: 0 3px 10px rgba(79,110,247,.15);
}
.recommend-item:nth-child(2) .rec-icon { background: linear-gradient(135deg, #FFF0F7 0%, #FFE4F0 100%); color: var(--banner); box-shadow: 0 3px 10px rgba(244,63,139,.15); }
.recommend-item:nth-child(3) .rec-icon { background: linear-gradient(135deg, #F0FDF4 0%, #D1FAE5 100%); color: var(--notebook); box-shadow: 0 3px 10px rgba(16,185,129,.15); }
.recommend-item:nth-child(4) .rec-icon { background: linear-gradient(135deg, #FFFBEB 0%, #FEF3C7 100%); color: var(--gemini); box-shadow: 0 3px 10px rgba(245,158,11,.15); }
.recommend-item:nth-child(5) .rec-icon { background: linear-gradient(135deg, #FFF5F5 0%, #FFE4E4 100%); color: var(--video); box-shadow: 0 3px 10px rgba(239,68,68,.15); }
.recommend-item p {
  font-size: .95rem;
  line-height: 1.75;
  color: var(--text);
}
.recommend-item p strong { color: var(--primary); font-weight: 700; background: var(--primary-light); padding: 0 3px; border-radius: 3px; }

/* ============================================================
   COURSES
   ============================================================ */
.courses { background: linear-gradient(180deg, #F5F7FF 0%, #EEF2FF 100%); }
.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.course-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px 28px;
  border: 1.5px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(24px);
}
.course-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  border-radius: 12px 12px 0 0;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}
.course-card:nth-child(1)::before { background: linear-gradient(90deg, var(--lp), #A78BFA); }
.course-card:nth-child(2)::before { background: linear-gradient(90deg, var(--banner), #FF9EC4); }
.course-card:nth-child(3)::before { background: linear-gradient(90deg, var(--notebook), #34D399); }
.course-card:nth-child(4)::before { background: linear-gradient(90deg, #F59E0B, #FCD34D); }
.course-card:nth-child(5)::before { background: linear-gradient(90deg, var(--cloud), #93C5FD); }
.course-card:nth-child(6)::before { background: linear-gradient(90deg, var(--video), #FCA5A5); }
.course-card.visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity .5s ease, transform .5s ease, box-shadow var(--transition), border-color var(--transition);
}
.course-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(79,110,247,.18);
  border-color: var(--primary);
}
.course-number {
  font-family: var(--font-en);
  font-size: 3.8rem;
  font-weight: 900;
  line-height: 1;
  letter-spacing: -.03em;
  margin-bottom: 16px;
  opacity: .12;
  transition: opacity var(--transition);
  /* 各カードのテーマカラーを継承して色付け */
  color: var(--dark);
}
.course-card:nth-child(1) .course-number { color: var(--lp);       opacity: .18; }
.course-card:nth-child(2) .course-number { color: var(--banner);   opacity: .18; }
.course-card:nth-child(3) .course-number { color: var(--notebook); opacity: .18; }
.course-card:nth-child(4) .course-number { color: var(--gemini);   opacity: .22; }
.course-card:nth-child(5) .course-number { color: var(--cloud);    opacity: .18; }
.course-card:nth-child(6) .course-number { color: var(--video);    opacity: .18; }
.course-card:hover .course-number        { opacity: .32; }
.course-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 100px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .04em;
  margin-bottom: 12px;
}
.course-title {
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--dark);
  line-height: 1.4;
  margin-bottom: 14px;
}
.course-desc {
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
  flex: 1;
}
.course-points {
  margin-bottom: 20px;
}
.course-points li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  color: var(--text);
  padding: 4px 0;
  border-bottom: 1px solid var(--bg);
}
.course-points li:last-child { border-bottom: none; }
.course-points .fa-check { color: var(--accent); font-size: .75rem; flex-shrink: 0; }
.course-dates {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .8rem;
  color: var(--text-muted);
  background: var(--primary-light);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  margin-top: auto;
  border: 1px solid rgba(79,110,247,.1);
}
.course-dates i { color: var(--primary); }

/* Tag colors */
.tag-lp     { background: rgba(124,58,237,.12); color: var(--lp); }
.tag-banner { background: rgba(244,63,139,.12); color: var(--banner); }
.tag-notebook { background: rgba(16,185,129,.12); color: var(--notebook); }
.tag-gemini { background: rgba(245,158,11,.14); color: #B45309; }
.tag-cloud  { background: rgba(79,110,247,.12); color: var(--cloud); }
.tag-video  { background: rgba(239,68,68,.12);  color: var(--video); }

/* ============================================================
   SCHEDULE
   ============================================================ */
.schedule { background: var(--white); position: relative; overflow: hidden; }
.schedule::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--accent2), var(--accent3));
}
.schedule-months { display: flex; flex-direction: column; gap: 40px; }
.schedule-month { }
.month-label {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 16px;
  font-size: .9rem;
  font-weight: 700;
  color: var(--text-muted);
  border-left: 4px solid var(--primary);
  padding-left: 14px;
}
/* 月ごとに色を変える */
.schedule-month:nth-child(1) .month-label { border-color: var(--lp); }
.schedule-month:nth-child(1) .month-label span { color: var(--lp); }
.schedule-month:nth-child(2) .month-label { border-color: var(--cloud); }
.schedule-month:nth-child(2) .month-label span { color: var(--cloud); }
.schedule-month:nth-child(3) .month-label { border-color: var(--notebook); }
.schedule-month:nth-child(3) .month-label span { color: var(--notebook); }
.month-label span {
  font-family: var(--font-en);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--dark);
}
.schedule-items { display: flex; flex-direction: column; gap: 10px; }
.schedule-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--bg);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  border: 1.5px solid var(--border);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.schedule-item:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  box-shadow: 0 4px 16px rgba(79,110,247,.1);
}
.s-date {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 700;
  color: var(--dark);
  min-width: 72px;
  flex-shrink: 0;
}
.dow {
  font-family: var(--font-sans);
  font-size: .7rem;
  background: linear-gradient(135deg, var(--primary), #7B8FFF);
  color: var(--white);
  padding: 1px 6px;
  border-radius: 3px;
  margin-left: 4px;
  font-weight: 700;
  vertical-align: middle;
}
.s-course {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  font-size: .9rem;
  font-weight: 500;
  color: var(--text);
}
.s-tag {
  display: inline-block;
  padding: 2px 9px;
  border-radius: 100px;
  font-size: .68rem;
  font-weight: 700;
  flex-shrink: 0;
}
.s-btn {
  flex-shrink: 0;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .8rem;
  font-weight: 700;
  padding: 7px 18px;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  white-space: nowrap;
  border: 1.5px solid rgba(79,110,247,.2);
}
.s-btn:hover {
  background: linear-gradient(135deg, var(--primary), #7B8FFF);
  color: var(--white);
  transform: translateY(-1px);
  border-color: transparent;
  box-shadow: 0 4px 12px rgba(79,110,247,.3);
}
.schedule-note {
  margin-top: 24px;
  font-size: .85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}
.schedule-note i { color: var(--primary); }

/* ============================================================
   CTA BANNER
   ============================================================ */
.cta-banner {
  background: linear-gradient(135deg, #4F6EF7 0%, #7B52D3 40%, #F43F8B 100%);
  padding: 88px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.08), transparent);
  top: -200px; left: -100px;
  pointer-events: none;
}
.cta-banner::after {
  content: '';
  position: absolute;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,209,102,.1), transparent);
  bottom: -150px; right: -50px;
  pointer-events: none;
}
.cta-banner h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 900;
  color: var(--white);
  margin-bottom: 16px;
}
.cta-banner p {
  color: rgba(255,255,255,.8);
  font-size: 1rem;
  line-height: 1.85;
  margin-bottom: 36px;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact { background: var(--bg); }
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 48px;
  align-items: start;
}
.contact-form { background: var(--white); border-radius: var(--radius); padding: 40px; border: 1px solid var(--border); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.required {
  font-size: .7rem;
  background: linear-gradient(135deg, var(--accent2), #FF8E8E);
  color: var(--white);
  padding: 1px 6px;
  border-radius: 3px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: .9rem;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,110,247,.14);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #CBD5E1; }
.form-group textarea { resize: vertical; min-height: 120px; }

/* Contact Info */
.contact-info { display: flex; flex-direction: column; gap: 24px; }
.company-info {
  background: var(--white);
  border-radius: var(--radius);
  padding: 32px;
  border: 1px solid var(--border);
}
.company-info h3 {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}
.company-logo-text {
  font-family: var(--font-en);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 16px;
}
.company-detail ul { display: flex; flex-direction: column; gap: 10px; }
.company-detail li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.company-detail i {
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
  width: 16px;
}
.company-detail a { color: var(--primary); transition: opacity var(--transition); }
.company-detail a:hover { opacity: .75; text-decoration: underline; }

/* Price summary */
.price-tag-box {
  background: linear-gradient(135deg, var(--primary) 0%, #7B52D3 100%);
  border-radius: var(--radius);
  padding: 28px;
  text-align: center;
  box-shadow: 0 8px 32px rgba(79,110,247,.3);
}
.price-tag-label {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: rgba(255,255,255,.65);
  margin-bottom: 6px;
}
.price-tag-amount {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
}
.price-tag-amount span {
  font-size: .8rem;
  font-weight: 500;
  opacity: .8;
  margin-left: 2px;
}
.price-tag-note {
  margin-top: 8px;
  font-size: .78rem;
  color: rgba(255,255,255,.65);
}

/* ============================================================
   ORGANIZER
   ============================================================ */
.organizer { background: var(--bg); }
.organizer-card {
  display: flex;
  align-items: center;
  gap: 40px;
  background: var(--white);
  border-radius: var(--radius);
  padding: 40px 48px;
  border: 1.5px solid var(--border);
  box-shadow: var(--shadow);
}
.organizer-logo {
  flex-shrink: 0;
  width: 180px;
  height: 110px;
  border-radius: var(--radius);
  background: var(--white);
  border: 1.5px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px 20px;
}
.organizer-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.organizer-logo-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.organizer-name {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--dark);
  margin-bottom: 16px;
}
.organizer-detail {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.organizer-detail li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .9rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.organizer-detail i {
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 3px;
  width: 16px;
}
.organizer-detail a {
  color: var(--primary);
  transition: opacity var(--transition);
}
.organizer-detail a:hover { opacity: .75; text-decoration: underline; }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: linear-gradient(135deg, #1A1F36 0%, #2D2060 100%);
  padding: 40px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-logo { display: flex; align-items: baseline; gap: 6px; }
.footer-logo .logo-mark { font-family: var(--font-en); font-weight: 800; font-size: 1.1rem; color: var(--white); }
.footer-logo .logo-sub  { font-size: .7rem; color: rgba(255,255,255,.4); }
.footer-copy { font-size: .8rem; color: rgba(255,255,255,.4); }
.back-to-top {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,.1);
  color: rgba(255,255,255,.6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .875rem;
  transition: background var(--transition), color var(--transition);
}
.back-to-top:hover {
  background: var(--primary);
  color: var(--white);
}

/* ============================================================
   MODAL
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  backdrop-filter: blur(4px);
}
.modal-overlay.active { opacity: 1; pointer-events: auto; }
.modal {
  background: var(--white);
  border-radius: var(--radius);
  padding: 48px 40px;
  max-width: 420px;
  width: calc(100% - 48px);
  text-align: center;
  transform: translateY(16px) scale(.97);
  transition: transform var(--transition);
}
.modal-overlay.active .modal { transform: none; }
.modal-icon { font-size: 3rem; color: #22C55E; margin-bottom: 16px; }
.modal h3 { font-size: 1.3rem; font-weight: 900; color: var(--dark); margin-bottom: 12px; }
.modal p  { font-size: .9rem; color: var(--text-muted); line-height: 1.75; margin-bottom: 28px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .overview-grid { grid-template-columns: repeat(2, 1fr); }
  .courses-grid  { grid-template-columns: repeat(2, 1fr); }
  .contact-wrapper { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }
  .pc-only { display: none; }

  /* Organizer */
  .organizer-card { flex-direction: column; align-items: flex-start; gap: 24px; padding: 28px 24px; }
  .organizer-logo { width: 120px; height: 72px; }

  /* Header */
  .hamburger { display: flex; }
  .main-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    gap: 0;
    padding: 16px 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
  }
  .main-nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .main-nav a {
    display: block;
    padding: 14px 24px;
    border-bottom: 1px solid var(--bg);
    font-size: 1rem;
    color: var(--text);
  }
  .main-nav a:last-child { border-bottom: none; }
  .nav-cta { border-radius: 0; background: var(--primary-light); color: var(--primary) !important; }

  /* Hero */
  .hero { min-height: 80vh; padding: 60px 0 80px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .hero-meta { flex-direction: column; gap: 12px; }

  /* Overview */
  .overview-grid { grid-template-columns: repeat(2, 1fr); }

  /* Recommend */
  .recommend-list { grid-template-columns: 1fr; }

  /* Courses */
  .courses-grid { grid-template-columns: 1fr; }

  /* Schedule */
  .schedule-item { flex-wrap: wrap; gap: 10px; }
  .s-course { flex: 1 0 100%; order: 2; }
  .s-date { order: 1; }
  .s-btn { order: 3; margin-left: auto; }

  /* Contact */
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 28px 20px; }
}

@media (max-width: 480px) {
  .overview-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.4rem; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* ── Accessibility ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}