/* =========================================================
   SpeakBloom LP - Stylesheet
   Design tokens follow the handoff spec (design_handoff_speakbloom_lp/README.md)
   ========================================================= */

:root {
  /* Colors */
  --c-primary: #1a73c7;
  --c-primary-dark: #0f6ab4;
  --c-navy: #143a6b;
  --c-body: #3c5a78;
  --c-muted: #5b7186;
  --c-muted-2: #6b8299;
  --c-nav-link: #26476a;
  --c-accent: #ef7d2c;
  --c-accent-light: #f9a04a;
  --c-bg: #ffffff;
  --c-bg-alt: #e8f4fd;
  --c-card-tint: #f7fbff;
  --c-card-tint-2: #f9fcff;
  --c-card-border: #dce9f4;
  --c-header-border: #e3eef8;
  --c-icon-chip-bg: #eaf5fe;
  --c-recommended-tint: #fff6ee;
  --c-recommended-muted: #7b6352;
  --c-footer-link: #cfe3f7;
  --c-footer-copyright: #96b8dc;

  --grad-hero: linear-gradient(165deg, #f2f9ff 0%, #e2f0fd 100%);
  --grad-cta: linear-gradient(135deg, #f9a04a 0%, #ef7d2c 100%);
  --grad-final-cta: linear-gradient(135deg, #1a73c7 0%, #0f5aa8 100%);

  /* Layout */
  --max-width: 1120px;
  --max-width-faq: 860px;
  --max-width-cta: 780px;
  --side-padding: 20px;
  --header-offset: 76px;

  /* Shadows */
  --shadow-card: 0 2px 10px rgba(20, 58, 107, 0.05);
  --shadow-card-2: 0 2px 10px rgba(20, 58, 107, 0.06);
  --shadow-card-hover: 0 12px 28px rgba(20, 58, 107, 0.14);
  --shadow-hero-img: 0 18px 44px rgba(20, 58, 107, 0.16);
  --shadow-cta-btn: 0 10px 24px rgba(239, 125, 44, 0.34);
  --shadow-cta-btn-sm: 0 6px 16px rgba(239, 125, 44, 0.32);
  --shadow-cta-final: 0 10px 26px rgba(8, 44, 86, 0.3);
  --shadow-recommended: 0 10px 28px rgba(239, 125, 44, 0.18);
}

/* =========================================================
   Reset / base
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  background: var(--c-bg);
  color: #1f3a52;
  overflow-x: hidden;
}

body.is-menu-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--c-primary-dark);
  text-decoration: none;
}

button {
  font-family: inherit;
}

h1, h2, h3, p {
  text-wrap: pretty;
}

.font-poppins {
  font-family: Poppins, sans-serif;
}

:focus-visible {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
}

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

.section {
  padding: clamp(48px, 7vw, 84px) var(--side-padding);
}

.section--alt {
  background: var(--c-bg-alt);
}

.section-heading {
  margin: 0 0 clamp(26px, 4vw, 44px);
  text-align: center;
  font-size: clamp(23px, 5.4vw, 34px);
  font-weight: 900;
  color: var(--c-primary-dark);
  line-height: 1.45;
}

/* =========================================================
   Header
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--c-header-border);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 9px;
  flex: 1 1 auto;
  min-width: 0;
}

.logo__wordmark {
  font-family: Poppins, sans-serif;
  font-weight: 700;
  font-size: clamp(19px, 4.4vw, 23px);
  color: var(--c-navy);
  letter-spacing: -0.01em;
}

.logo__wordmark--light {
  color: #ffffff;
  font-size: 19px;
}

.nav-desktop {
  display: none;
  align-items: center;
  gap: 26px;
  margin-right: 6px;
}

.nav-desktop a {
  font-size: 15px;
  font-weight: 500;
  color: var(--c-nav-link);
  transition: color 0.15s ease;
}

.nav-desktop a:hover,
.nav-desktop a:focus-visible {
  color: var(--c-accent);
}

.btn-login {
  display: none;
  align-items: center;
  justify-content: center;
  height: 42px;
  padding: 0 20px;
  border: 1.5px solid #9cc7ea;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  color: var(--c-primary-dark);
  transition: background 0.15s ease;
  white-space: nowrap;
}

.btn-login:hover,
.btn-login:focus-visible {
  background: #eef7fe;
}

.btn-cta-header {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 22px;
  border-radius: 999px;
  background: var(--grad-cta);
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  box-shadow: var(--shadow-cta-btn-sm);
  white-space: nowrap;
  transition: filter 0.15s ease;
}

.btn-cta-header:hover,
.btn-cta-header:focus-visible {
  color: #fff;
  filter: brightness(1.05);
}

.hamburger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  border: 1px solid #cfe4f5;
  background: #fff;
  border-radius: 12px;
  cursor: pointer;
  padding: 0;
}

.hamburger__bars {
  display: flex;
  flex-direction: column;
  gap: 5px;
  align-items: center;
}

.hamburger__bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--c-primary);
  border-radius: 2px;
}

.mobile-menu {
  display: none;
  border-top: 1px solid var(--c-header-border);
  background: #fff;
  padding: 10px 16px 18px;
}

.mobile-menu.is-open {
  display: block;
}

.mobile-menu__link {
  display: flex;
  align-items: center;
  min-height: 56px;
  font-size: 17px;
  font-weight: 500;
  color: var(--c-nav-link);
  border-bottom: 1px solid #eef4fa;
}

.mobile-menu__actions {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.mobile-menu__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  border-radius: 999px;
  background: var(--grad-cta);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
}

.mobile-menu__login {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  border: 1.5px solid #9cc7ea;
  border-radius: 999px;
  color: var(--c-primary-dark);
  font-size: 16px;
  font-weight: 700;
}

@media (min-width: 900px) {
  .nav-desktop,
  .btn-login,
  .btn-cta-header {
    display: flex;
  }
  .hamburger,
  .mobile-menu {
    display: none !important;
  }
}

/* =========================================================
   Hero
   ========================================================= */
.hero {
  background: var(--grad-hero);
  padding: clamp(28px, 5vw, 64px) var(--side-padding) clamp(40px, 6vw, 72px);
}

.hero__grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  align-items: center;
}

.hero__col {
  min-width: 0;
}

.hero__title {
  margin: 0 0 18px;
  font-size: clamp(31px, 8.2vw, 52px);
  line-height: 1.28;
  font-weight: 900;
  letter-spacing: -0.01em;
  color: var(--c-navy);
}

.hero__title-accent {
  color: var(--c-primary);
}

.hero__lead {
  margin: 0 0 26px;
  font-size: clamp(15.5px, 3.7vw, 18px);
  line-height: 1.95;
  color: var(--c-body);
}

.btn-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  max-width: 360px;
  min-height: 62px;
  padding: 0 26px;
  border-radius: 999px;
  background: var(--grad-cta);
  color: #fff;
  font-size: clamp(16px, 4vw, 18px);
  font-weight: 700;
  box-shadow: var(--shadow-cta-btn);
  transition: filter 0.15s ease;
}

.btn-cta:hover,
.btn-cta:focus-visible {
  color: #fff;
  filter: brightness(1.05);
}

.btn-cta__arrow {
  font-size: 1.1em;
}

.hero__badges {
  margin-top: clamp(26px, 4vw, 36px);
  display: grid;
  gap: 14px 22px;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.badge {
  display: flex;
  align-items: center;
  gap: 11px;
}

.badge__icon {
  flex: 0 0 auto;
}

.badge__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1.5;
}

.badge__desc {
  font-size: 13.5px;
  color: var(--c-muted);
  line-height: 1.5;
}

.hero__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: 5% 28%;
  border-radius: 20px;
  box-shadow: var(--shadow-hero-img);
}

/* =========================================================
   Card grids (problems / reasons / courses / instructors)
   ========================================================= */
.grid {
  display: grid;
}

.grid--problems {
  gap: clamp(14px, 2.4vw, 22px);
  grid-template-columns: repeat(auto-fit, minmax(255px, 1fr));
}

.grid--reasons {
  gap: clamp(14px, 2.2vw, 20px);
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.grid--courses,
.grid--instructors {
  gap: clamp(16px, 2.4vw, 22px);
  grid-template-columns: repeat(auto-fit, minmax(268px, 1fr));
}

.grid--pricing {
  gap: clamp(16px, 2.4vw, 22px);
  grid-template-columns: repeat(auto-fit, minmax(262px, 1fr));
  align-items: start;
}

.card-problem {
  background: #fff;
  border: 1px solid var(--c-card-border);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  padding: clamp(24px, 4vw, 32px);
  text-align: center;
}

.card-problem__icon {
  margin: 0 auto 14px;
  display: block;
}

.card-problem h3 {
  margin: 0 0 12px;
  font-size: clamp(17px, 4.2vw, 19px);
  font-weight: 700;
  color: var(--c-navy);
}

.card-problem p {
  margin: 0;
  font-size: clamp(14.5px, 3.5vw, 15.5px);
  line-height: 1.9;
  color: var(--c-muted);
}

.card-reason {
  background: var(--c-card-tint);
  border: 1px solid var(--c-card-border);
  border-radius: 16px;
  padding: clamp(22px, 3.6vw, 28px);
  text-align: center;
}

.card-reason__icon {
  margin: 0 auto 14px;
  display: block;
}

.card-reason h3 {
  margin: 0 0 12px;
  font-size: clamp(16.5px, 4vw, 18px);
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1.6;
}

.card-reason p {
  margin: 0;
  font-size: clamp(14px, 3.4vw, 15px);
  line-height: 1.9;
  color: var(--c-muted);
}

/* Courses */
.card-course {
  display: block;
  background: #fff;
  border: 1px solid var(--c-card-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card-2);
  color: inherit;
  transition: box-shadow 0.2s ease;
}

.card-course:hover,
.card-course:focus-visible {
  box-shadow: var(--shadow-card-hover);
}

.card-course__img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.card-course__body {
  padding: clamp(18px, 3.2vw, 24px);
  display: flex;
  align-items: center;
  gap: 14px;
}

.card-course__text {
  flex: 1 1 auto;
  min-width: 0;
}

.card-course__text h3 {
  margin: 0 0 8px;
  font-size: clamp(17px, 4.2vw, 19px);
  font-weight: 700;
  color: var(--c-navy);
}

.card-course__text p {
  margin: 0;
  font-size: clamp(14px, 3.4vw, 15px);
  line-height: 1.85;
  color: var(--c-muted);
}

.card-course__chip {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--c-icon-chip-bg);
  color: var(--c-primary);
  font-size: 20px;
  font-weight: 700;
}

/* Instructors */
.card-instructor {
  background: #fff;
  border: 1px solid var(--c-card-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card-2);
}

.card-instructor__img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: 50% 25%;
}

.card-instructor__body {
  padding: clamp(18px, 3.2vw, 24px);
}

.card-instructor__name {
  margin: 0 0 4px;
  font-family: Poppins, sans-serif;
  font-size: clamp(18px, 4.4vw, 20px);
  font-weight: 700;
  color: var(--c-navy);
}

.card-instructor__origin {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--c-primary);
  margin-bottom: 12px;
}

.card-instructor__body p {
  margin: 0;
  font-size: clamp(14px, 3.4vw, 15px);
  line-height: 1.9;
  color: var(--c-muted);
}

/* =========================================================
   Lesson environment
   ========================================================= */
.lesson-env__grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  align-items: center;
}

.lesson-env__col {
  min-width: 0;
}

.lesson-env__heading {
  margin: 0 0 18px;
  font-size: clamp(24px, 5.6vw, 34px);
  font-weight: 900;
  line-height: 1.45;
  color: var(--c-navy);
}

.lesson-env__heading-accent {
  color: var(--c-primary);
}

.lesson-env__lead {
  margin: 0 0 24px;
  font-size: clamp(15px, 3.6vw, 16.5px);
  line-height: 1.95;
  color: var(--c-body);
}

.chip-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}

.chip {
  display: flex;
  align-items: center;
  gap: 11px;
  background: #fff;
  border: 1px solid var(--c-card-border);
  border-radius: 12px;
  padding: 14px 16px;
}

.chip__icon {
  flex: 0 0 auto;
}

.chip__text {
  min-width: 0;
}

.chip__title {
  font-size: 14.5px;
  font-weight: 700;
  color: var(--c-navy);
  line-height: 1.45;
}

.chip__desc {
  font-size: 12.5px;
  color: var(--c-muted-2);
  line-height: 1.45;
}

.lesson-env__img {
  width: 100%;
  height: auto;
}

/* =========================================================
   Pricing
   ========================================================= */
.card-pricing {
  background: #fff;
  border: 1px solid var(--c-card-border);
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card-2);
}

.card-pricing--recommended {
  border: 2px solid var(--c-accent);
  box-shadow: var(--shadow-recommended);
}

.card-pricing__ribbon {
  background: var(--grad-cta);
  color: #fff;
  text-align: center;
  font-size: 13px;
  font-weight: 700;
  padding: 7px 12px;
  letter-spacing: 0.06em;
}

.card-pricing__header {
  background: var(--c-icon-chip-bg);
  padding: 22px 20px;
  text-align: center;
}

.card-pricing--recommended .card-pricing__header {
  background: var(--c-recommended-tint);
  padding: 20px;
}

.card-pricing__header h3 {
  margin: 0 0 6px;
  font-size: clamp(18px, 4.4vw, 20px);
  font-weight: 700;
  color: var(--c-navy);
}

.card-pricing__tagline {
  margin: 0 0 14px;
  font-size: 13.5px;
  color: var(--c-muted);
}

.card-pricing--recommended .card-pricing__tagline {
  color: var(--c-recommended-muted);
}

.card-pricing__price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.card-pricing__price-label,
.card-pricing__price-unit {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-navy);
}

.card-pricing__price-amount {
  font-family: Poppins, sans-serif;
  font-size: clamp(32px, 7vw, 40px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-primary);
}

.card-pricing--recommended .card-pricing__price-amount {
  color: var(--c-accent);
}

.card-pricing__price-tax {
  font-size: 12.5px;
  color: var(--c-muted-2);
}

.card-pricing--recommended .card-pricing__price-tax {
  color: var(--c-recommended-muted);
}

.card-pricing__note {
  margin: 8px 0 0;
  font-size: 13px;
  color: var(--c-muted);
}

.card-pricing--recommended .card-pricing__note {
  color: var(--c-recommended-muted);
}

.card-pricing__features {
  padding: clamp(20px, 3.4vw, 26px);
  display: grid;
  gap: 13px;
}

.feature-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.feature-row__icon {
  flex: 0 0 auto;
  margin-top: 2px;
}

.feature-row span:last-child {
  font-size: clamp(14.5px, 3.5vw, 15.5px);
  line-height: 1.7;
  color: var(--c-body);
}

.pricing-note {
  margin: clamp(20px, 3vw, 28px) 0 0;
  text-align: center;
  font-size: 13.5px;
  color: var(--c-muted-2);
}

/* =========================================================
   Steps
   ========================================================= */
.steps {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(12px, 2vw, 16px);
  align-items: stretch;
  justify-content: center;
}

.card-step {
  flex: 1 1 260px;
  min-width: 0;
  background: #fff;
  border: 1px solid var(--c-card-border);
  border-radius: 16px;
  padding: clamp(22px, 3.6vw, 28px);
  text-align: center;
  position: relative;
}

.card-step__number {
  position: absolute;
  top: 16px;
  left: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--c-primary);
  color: #fff;
  font-family: Poppins, sans-serif;
  font-size: 14px;
  font-weight: 700;
}

.card-step__icon {
  margin: 6px auto 14px;
  display: block;
}

.card-step h3 {
  margin: 0 0 10px;
  font-size: clamp(17px, 4.2vw, 19px);
  font-weight: 700;
  color: var(--c-primary);
}

.card-step p {
  margin: 0;
  font-size: clamp(14px, 3.4vw, 15px);
  line-height: 1.85;
  color: var(--c-muted);
}

.steps__separator {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #9dbdd8;
  font-size: 30px;
  font-weight: 700;
  min-height: 40px;
}

/* =========================================================
   FAQ
   ========================================================= */
.faq-container {
  max-width: var(--max-width-faq);
  margin: 0 auto;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--c-card-border);
  border-radius: 12px;
  background: var(--c-card-tint-2);
  overflow: hidden;
}

.faq-item__question {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  min-height: 62px;
  padding: 14px 18px;
  background: transparent;
  border: 0;
  cursor: pointer;
  text-align: left;
}

.faq-item__question-text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: clamp(15px, 3.6vw, 16.5px);
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-nav-link);
}

.faq-item__sign {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--c-icon-chip-bg);
  color: var(--c-primary);
  font-size: 19px;
  font-weight: 700;
  line-height: 1;
}

.faq-item__answer {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.25s ease-out;
}

.faq-item.is-open .faq-item__answer {
  max-height: 400px;
}

.faq-item__answer-inner {
  padding: 0 18px 20px;
  font-size: clamp(14.5px, 3.5vw, 15.5px);
  line-height: 1.95;
  color: var(--c-muted);
}

/* =========================================================
   Final CTA
   ========================================================= */
.final-cta {
  background: var(--grad-final-cta);
  padding: clamp(44px, 6.5vw, 76px) var(--side-padding);
  scroll-margin-top: var(--header-offset);
}

.final-cta__inner {
  max-width: var(--max-width-cta);
  margin: 0 auto;
  text-align: center;
}

.final-cta__heading {
  margin: 0 0 26px;
  font-size: clamp(23px, 5.4vw, 34px);
  font-weight: 900;
  line-height: 1.5;
  color: #ffffff;
}

.final-cta .btn-cta {
  margin: 0 auto;
}

.final-cta__note {
  margin: 18px 0 0;
  font-size: 13.5px;
  color: #d5e8fa;
}

/* =========================================================
   Footer
   ========================================================= */
.site-footer {
  background: var(--c-navy);
  padding: clamp(28px, 4.4vw, 38px) var(--side-padding);
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px 30px;
}

.site-footer__logo {
  display: flex;
  align-items: center;
  gap: 9px;
  flex: 0 0 auto;
}

.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  flex: 1 1 auto;
}

.site-footer__nav a {
  display: flex;
  align-items: center;
  min-height: 44px;
  font-size: 14.5px;
  color: var(--c-footer-link);
  transition: color 0.15s ease;
}

.site-footer__nav a:hover,
.site-footer__nav a:focus-visible {
  color: #ffffff;
}

.site-footer__copyright {
  margin: 0;
  flex: 0 0 auto;
  font-size: 12.5px;
  color: var(--c-footer-copyright);
}

/* Anchor scroll offset for sticky header */
#courses,
#instructors,
#pricing,
#faq {
  scroll-margin-top: var(--header-offset);
}