/* ===================================
   LANDING PAGE TEMPLATE — style.css
   Conversion-focused, Bold & Modern
   =================================== */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --color-primary:    #6c63ff;
  --color-primary-d:  #5a52d5;
  --color-primary-l:  #ede9ff;
  --color-accent:     #ff6584;
  --color-dark:       #1a1a2e;
  --color-gray:       #64748b;
  --color-light:      #f8fafc;
  --color-border:     #e2e8f0;
  --color-white:      #ffffff;

  --font-base: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-xl:  32px;
  --shadow-sm:  0 1px 4px rgba(0,0,0,.06);
  --shadow-md:  0 8px 32px rgba(108,99,255,.15);
  --shadow-lg:  0 24px 64px rgba(108,99,255,.2);
  --transition: .25s ease;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-base);
  color: var(--color-dark);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 980px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  white-space: nowrap;
}
.btn--primary { background: var(--color-primary); color: #fff; }
.btn--primary:hover { background: var(--color-primary-d); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn--ghost { background: transparent; color: var(--color-primary); border: 1.5px solid var(--color-primary); }
.btn--ghost:hover { background: var(--color-primary); color: #fff; }
.btn--white { background: #fff; color: var(--color-primary); font-weight: 700; }
.btn--white:hover { background: var(--color-primary-l); }
.btn--sm { padding: 10px 20px; font-size: 14px; }
.btn--full { width: 100%; }

/* ── Section ── */
.section { padding: 100px 0; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-eyebrow {
  font-size: 12px; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--color-primary); margin-bottom: 12px;
}
.section-title {
  font-size: clamp(28px, 4vw, 44px); font-weight: 800;
  letter-spacing: -.03em; line-height: 1.2; margin-bottom: 16px;
}
.section-desc { font-size: 17px; color: var(--color-gray); line-height: 1.7; }

/* ── Topbar ── */
.topbar {
  background: var(--color-primary);
  color: #fff;
  text-align: center;
  padding: 10px 24px;
  font-size: 14px;
  position: relative;
}
.topbar strong { font-weight: 700; }
.topbar__close {
  position: absolute; right: 16px; top: 50%; transform: translateY(-50%);
  background: none; border: none; color: rgba(255,255,255,.7);
  cursor: pointer; font-size: 16px; padding: 4px;
}
.topbar__close:hover { color: #fff; }

/* ── Header ── */
.header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}
.header__inner {
  display: flex; align-items: center; height: 64px; gap: 24px;
}
.logo { display: flex; align-items: center; gap: 8px; font-size: 18px; font-weight: 800; flex-shrink: 0; }
.logo__icon { color: var(--color-primary); }
.logo--white .logo__icon, .logo--white .logo__text { color: #fff; }
.gnb { margin-left: auto; }
.gnb__list { display: flex; gap: 4px; }
.gnb__list a {
  padding: 8px 14px; border-radius: var(--radius-sm);
  font-size: 14px; font-weight: 500; color: var(--color-gray); transition: var(--transition);
}
.gnb__list a:hover { color: var(--color-primary); background: var(--color-primary-l); }
.header__actions { display: flex; gap: 10px; flex-shrink: 0; }
.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px; margin-left: auto;
}
.hamburger span { display: block; width: 22px; height: 2px; background: var(--color-dark); border-radius: 2px; transition: var(--transition); }

/* ── Hero ── */
.hero {
  background: linear-gradient(160deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
  color: #fff;
  padding: 100px 0 80px;
  overflow: hidden;
}
.hero__inner { display: flex; flex-direction: column; align-items: center; text-align: center; }
.hero__badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.2);
  border-radius: 980px; padding: 6px 16px; font-size: 13px; font-weight: 600;
  margin-bottom: 28px; backdrop-filter: blur(10px);
}
.hero__title {
  font-size: clamp(36px, 6vw, 68px); font-weight: 900;
  letter-spacing: -.04em; line-height: 1.1; margin-bottom: 24px;
}
.hero__highlight {
  background: linear-gradient(135deg, #a78bfa, #60a5fa);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero__desc { font-size: 18px; color: rgba(255,255,255,.75); line-height: 1.7; margin-bottom: 40px; max-width: 560px; }
.hero__form {
  display: flex; gap: 12px; width: 100%; max-width: 520px; margin-bottom: 16px;
}
.hero__input {
  flex: 1; padding: 16px 20px; border-radius: 980px;
  border: none; font-size: 15px; font-family: var(--font-base);
  background: rgba(255,255,255,.12); color: #fff;
  backdrop-filter: blur(10px); outline: none;
  border: 1px solid rgba(255,255,255,.2);
}
.hero__input::placeholder { color: rgba(255,255,255,.5); }
.hero__input:focus { border-color: rgba(255,255,255,.5); background: rgba(255,255,255,.18); }
.hero__submit { flex-shrink: 0; }
.hero__note { font-size: 13px; color: rgba(255,255,255,.5); margin-bottom: 40px; }
.hero__social-proof { display: flex; align-items: center; gap: 12px; margin-bottom: 64px; }
.avatar-group { display: flex; }
.avatar {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; color: #fff;
  border: 2px solid #302b63; margin-left: -8px;
}
.avatar:first-child { margin-left: 0; }
.hero__social-proof p { font-size: 14px; color: rgba(255,255,255,.75); }
.hero__social-proof strong { color: #fff; }

/* ── Mockup ── */
.hero__mockup { width: 100%; max-width: 800px; }
.mockup-window {
  background: #1e1e2e; border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: 0 40px 80px rgba(0,0,0,.5);
  border: 1px solid rgba(255,255,255,.1);
}
.mockup-bar {
  background: #2a2a3e; padding: 12px 16px;
  display: flex; align-items: center; gap: 6px;
}
.dot { width: 12px; height: 12px; border-radius: 50%; }
.dot--red { background: #ff5f57; }
.dot--yellow { background: #febc2e; }
.dot--green { background: #28c840; }
.mockup-content { display: flex; height: 240px; }
.mockup-sidebar {
  width: 60px; background: #16162a; padding: 16px 12px;
  display: flex; flex-direction: column; gap: 8px;
}
.mockup-nav-item {
  height: 8px; border-radius: 4px; background: rgba(255,255,255,.15);
}
.mockup-nav-item--active { background: var(--color-primary); }
.mockup-main { flex: 1; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.mockup-header-bar { height: 10px; background: rgba(255,255,255,.1); border-radius: 4px; width: 40%; }
.mockup-cards { display: flex; gap: 8px; }
.mockup-card { flex: 1; height: 48px; border-radius: var(--radius-sm); }
.mockup-card--blue { background: linear-gradient(135deg, #667eea, #764ba2); }
.mockup-card--green { background: linear-gradient(135deg, #11998e, #38ef7d); }
.mockup-card--purple { background: linear-gradient(135deg, #f093fb, #f5576c); }
.mockup-chart { display: flex; align-items: flex-end; gap: 6px; flex: 1; }
.mockup-bar-item { flex: 1; background: rgba(108,99,255,.5); border-radius: 4px 4px 0 0; min-height: 10px; }

/* ── Logos ── */
.logos { padding: 48px 0; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.logos__label { text-align: center; font-size: 13px; color: var(--color-gray); margin-bottom: 24px; text-transform: uppercase; letter-spacing: .08em; }
.logos__grid { display: flex; justify-content: center; align-items: center; gap: 48px; flex-wrap: wrap; }
.logo-item { font-size: 16px; font-weight: 700; color: var(--color-border); letter-spacing: .05em; }

/* ── Features ── */
.features { background: var(--color-light); }
.feature-block {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: center; margin-bottom: 100px;
}
.feature-block:last-child { margin-bottom: 0; }
.feature-block--reverse { direction: rtl; }
.feature-block--reverse > * { direction: ltr; }
.feature-block__badge {
  display: inline-block; font-size: 48px; font-weight: 900;
  color: var(--color-primary-l); line-height: 1; margin-bottom: 16px;
}
.feature-block__content h3 { font-size: 28px; font-weight: 800; letter-spacing: -.02em; margin-bottom: 16px; }
.feature-block__content p { font-size: 16px; color: var(--color-gray); line-height: 1.8; margin-bottom: 24px; }
.feature-list { display: flex; flex-direction: column; gap: 10px; }
.feature-list li { font-size: 15px; font-weight: 500; color: var(--color-dark); }
.feature-block__visual { }
.feature-visual-placeholder {
  aspect-ratio: 4/3; background: var(--color-primary-l);
  border-radius: var(--radius-lg); display: flex; align-items: center;
  justify-content: center; color: var(--color-primary); font-size: 14px;
  border: 2px dashed var(--color-primary);
}

/* ── How It Works ── */
.how { background: var(--color-white); }
.how__steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; position: relative; }
.step { text-align: center; padding: 40px 24px; background: var(--color-light); border-radius: var(--radius-lg); position: relative; }
.step__number {
  position: absolute; top: -16px; left: 50%; transform: translateX(-50%);
  width: 32px; height: 32px; background: var(--color-primary); color: #fff;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700;
}
.step__icon { font-size: 48px; margin-bottom: 16px; }
.step__title { font-size: 20px; font-weight: 700; margin-bottom: 12px; }
.step__desc { font-size: 14px; color: var(--color-gray); line-height: 1.7; }

/* ── Pricing ── */
.pricing { background: var(--color-light); }
.pricing-toggle {
  display: flex; align-items: center; justify-content: center;
  gap: 12px; margin-top: 24px;
}
.pricing-toggle__label { font-size: 15px; font-weight: 500; color: var(--color-gray); }
.pricing-toggle__label--active { color: var(--color-dark); font-weight: 700; }
.badge-save {
  font-style: normal; background: #dcfce7; color: #16a34a;
  font-size: 12px; font-weight: 700; padding: 2px 8px; border-radius: 980px;
}
.switch { position: relative; display: inline-block; width: 44px; height: 24px; }
.switch input { opacity: 0; width: 0; height: 0; }
.switch__slider {
  position: absolute; cursor: pointer; inset: 0;
  background: var(--color-border); border-radius: 24px; transition: var(--transition);
}
.switch__slider::before {
  content: ''; position: absolute; height: 18px; width: 18px;
  left: 3px; bottom: 3px; background: #fff; border-radius: 50%; transition: var(--transition);
}
input:checked + .switch__slider { background: var(--color-primary); }
input:checked + .switch__slider::before { transform: translateX(20px); }

.pricing__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; }
.pricing-card {
  background: var(--color-white); border-radius: var(--radius-lg);
  padding: 36px 28px; border: 1.5px solid var(--color-border); position: relative;
  transition: var(--transition);
}
.pricing-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.pricing-card--featured {
  background: var(--color-primary); border-color: var(--color-primary);
  color: #fff; transform: scale(1.04);
}
.pricing-card--featured:hover { transform: scale(1.04) translateY(-4px); }
.pricing-card__popular {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--color-accent); color: #fff; font-size: 12px; font-weight: 700;
  padding: 4px 16px; border-radius: 980px; white-space: nowrap;
}
.pricing-card__header h3 { font-size: 22px; font-weight: 800; margin-bottom: 4px; }
.pricing-card__header p { font-size: 14px; color: var(--color-gray); margin-bottom: 24px; }
.pricing-card--featured .pricing-card__header p { color: rgba(255,255,255,.75); }
.pricing-card__price { margin-bottom: 28px; }
.price-amount { font-size: 40px; font-weight: 900; letter-spacing: -.03em; }
.price-unit { font-size: 14px; color: var(--color-gray); margin-left: 4px; }
.pricing-card--featured .price-unit { color: rgba(255,255,255,.75); }
.pricing-card__features { display: flex; flex-direction: column; gap: 12px; margin-bottom: 28px; }
.pricing-card__features li { font-size: 14px; }
.included { color: var(--color-dark); }
.pricing-card--featured .included { color: #fff; }
.excluded { color: var(--color-border); text-decoration: line-through; }

/* ── Testimonials ── */
.testimonials { background: var(--color-white); }
.testimonials__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card {
  background: var(--color-light); border-radius: var(--radius-md);
  padding: 32px 28px; border: 1px solid var(--color-border);
}
.review-card--featured {
  background: var(--color-primary); color: #fff; border-color: var(--color-primary);
}
.review-card__stars { font-size: 18px; color: #fbbf24; margin-bottom: 16px; letter-spacing: 2px; }
.review-card__text { font-size: 15px; line-height: 1.8; margin-bottom: 24px; font-style: italic; }
.review-card--featured .review-card__text { color: rgba(255,255,255,.9); }
.review-card__author { display: flex; align-items: center; gap: 12px; }
.review-card__avatar {
  width: 44px; height: 44px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700; color: #fff; flex-shrink: 0;
}
.review-card__author strong { display: block; font-size: 15px; }
.review-card__author span { font-size: 13px; color: var(--color-gray); }
.review-card--featured .review-card__author span { color: rgba(255,255,255,.7); }

/* ── FAQ ── */
.faq { background: var(--color-light); }
.faq__list { max-width: 720px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { background: var(--color-white); border-radius: var(--radius-md); border: 1px solid var(--color-border); overflow: hidden; }
.faq-item__question {
  width: 100%; text-align: left; padding: 20px 24px;
  font-size: 16px; font-weight: 600; background: none; border: none;
  cursor: pointer; display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-base); color: var(--color-dark); transition: var(--transition);
}
.faq-item__question::after { content: '+'; font-size: 20px; color: var(--color-primary); font-weight: 300; }
.faq-item.is-open .faq-item__question::after { content: '−'; }
.faq-item__answer {
  max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .35s ease;
  padding: 0 24px;
}
.faq-item.is-open .faq-item__answer { max-height: 200px; padding: 0 24px 20px; }
.faq-item__answer p { font-size: 15px; color: var(--color-gray); line-height: 1.8; }

/* ── CTA Section ── */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-d));
  padding: 100px 0; text-align: center; color: #fff;
}
.cta-section__inner { display: flex; flex-direction: column; align-items: center; }
.cta-section h2 { font-size: clamp(28px, 4vw, 48px); font-weight: 900; letter-spacing: -.03em; margin-bottom: 16px; }
.cta-section p { font-size: 18px; color: rgba(255,255,255,.8); margin-bottom: 40px; }
.cta-section__form {
  display: flex; gap: 12px; width: 100%; max-width: 480px; margin-bottom: 16px;
}
.cta-section__form input {
  flex: 1; padding: 16px 20px; border-radius: 980px;
  border: none; font-size: 15px; font-family: var(--font-base);
  background: rgba(255,255,255,.15); color: #fff;
  border: 1px solid rgba(255,255,255,.3); outline: none;
}
.cta-section__form input::placeholder { color: rgba(255,255,255,.6); }
.cta-section__note { font-size: 13px; color: rgba(255,255,255,.6); }

/* ── Footer ── */
.footer { background: var(--color-dark); color: #fff; padding: 64px 0 0; }
.footer__inner { display: grid; grid-template-columns: 1.5fr 2fr; gap: 64px; padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,.1); }
.footer__brand p { font-size: 14px; color: rgba(255,255,255,.5); margin-top: 16px; line-height: 1.7; }
.footer__social { display: flex; gap: 12px; margin-top: 20px; }
.footer__social a { width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,.1); display: flex; align-items: center; justify-content: center; font-size: 14px; transition: var(--transition); }
.footer__social a:hover { background: var(--color-primary); }
.footer__links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer__col h4 { font-size: 14px; font-weight: 700; margin-bottom: 16px; color: rgba(255,255,255,.9); }
.footer__col ul { display: flex; flex-direction: column; gap: 10px; }
.footer__col a { font-size: 13px; color: rgba(255,255,255,.5); transition: var(--transition); }
.footer__col a:hover { color: #fff; }
.footer__bottom { padding: 20px 0; }
.footer__bottom .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.footer__bottom p { font-size: 12px; color: rgba(255,255,255,.4); }
.footer__legal { display: flex; gap: 20px; }
.footer__legal a { font-size: 12px; color: rgba(255,255,255,.4); transition: var(--transition); }
.footer__legal a:hover { color: rgba(255,255,255,.8); }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .feature-block { grid-template-columns: 1fr; gap: 40px; }
  .feature-block--reverse { direction: ltr; }
  .pricing__grid { grid-template-columns: 1fr; max-width: 400px; margin: 0 auto; }
  .pricing-card--featured { transform: none; }
  .testimonials__grid { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .gnb, .header__actions { display: none; }
  .hamburger { display: flex; }
  .gnb.is-open {
    display: flex; position: fixed; top: 64px; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--color-border);
    padding: 16px 24px; box-shadow: 0 8px 32px rgba(0,0,0,.1);
  }
  .gnb.is-open .gnb__list { flex-direction: column; width: 100%; }
  .gnb.is-open .gnb__list a { padding: 14px 16px; font-size: 16px; }
  .hero__form { flex-direction: column; }
  .how__steps { grid-template-columns: 1fr; }
  .footer__links { grid-template-columns: repeat(2, 1fr); }
  .cta-section__form { flex-direction: column; }
}
@media (max-width: 480px) {
  .logos__grid { gap: 24px; }
  .footer__links { grid-template-columns: 1fr; }
}