/* ==========================================================================
   9O VAN — Main Stylesheet
   All values reference design-tokens.css via var(--token-name)
   ========================================================================== */

/* ------------------------------------------------------------------
   RESET & BASE
   ------------------------------------------------------------------ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-heading);
  font-size: var(--body-2-size);
  font-weight: var(--body-2-weight);
  line-height: var(--body-2-lh);
  letter-spacing: var(--body-2-ls);
  color: var(--color-font-body);
  background-color: var(--color-surface-white);
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-default);
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
}

/* ------------------------------------------------------------------
   TYPOGRAPHY UTILITIES
   ------------------------------------------------------------------ */
.heading-1 {
  font-family: var(--font-heading);
  font-size: var(--heading-1-size);
  font-weight: var(--heading-1-weight);
  line-height: var(--heading-1-lh);
  letter-spacing: var(--heading-1-ls);
}

.heading-2 {
  font-family: var(--font-heading);
  font-size: var(--heading-2-size);
  font-weight: var(--heading-2-weight);
  line-height: var(--heading-2-lh);
  letter-spacing: var(--heading-2-ls);
}

.heading-3 {
  font-family: var(--font-heading);
  font-size: var(--heading-3-size);
  font-weight: var(--heading-3-weight);
  line-height: var(--heading-3-lh);
  letter-spacing: var(--heading-3-ls);
}

.heading-4 {
  font-family: var(--font-heading);
  font-size: var(--heading-4-size);
  font-weight: var(--heading-4-weight);
  line-height: var(--heading-4-lh);
  letter-spacing: var(--heading-4-ls);
}

.heading-5 {
  font-family: var(--font-heading);
  font-size: var(--heading-5-size);
  font-weight: var(--heading-5-weight);
  line-height: var(--heading-5-lh);
  letter-spacing: var(--heading-5-ls);
}

.heading-6 {
  font-family: var(--font-heading);
  font-size: var(--heading-6-size);
  font-weight: var(--heading-6-weight);
  line-height: var(--heading-6-lh);
  letter-spacing: var(--heading-6-ls);
}

.heading-7 {
  font-family: var(--font-heading);
  font-size: var(--heading-7-size);
  font-weight: var(--heading-7-weight);
  line-height: var(--heading-7-lh);
  letter-spacing: var(--heading-7-ls);
}

.heading-8 {
  font-family: var(--font-heading);
  font-size: var(--heading-8-size);
  font-weight: var(--heading-8-weight);
  line-height: var(--heading-8-lh);
  letter-spacing: var(--heading-8-ls);
}

.heading-9 {
  font-family: var(--font-heading);
  font-size: var(--heading-9-size);
  font-weight: var(--heading-9-weight);
  line-height: var(--heading-9-lh);
  letter-spacing: var(--heading-9-ls);
}

.body-1 {
  font-family: var(--font-heading);
  font-size: var(--body-1-size);
  font-weight: var(--body-1-weight);
  line-height: var(--body-1-lh);
  letter-spacing: var(--body-1-ls);
}

.body-2 {
  font-family: var(--font-heading);
  font-size: var(--body-2-size);
  font-weight: var(--body-2-weight);
  line-height: var(--body-2-lh);
  letter-spacing: var(--body-2-ls);
}

.body-3 {
  font-family: var(--font-heading);
  font-size: var(--body-3-size);
  font-weight: var(--body-3-weight);
  line-height: var(--body-3-lh);
  letter-spacing: var(--body-3-ls);
}

.en-heading-1 {
  font-family: var(--font-en);
  font-size: var(--en-heading-1-size);
  font-weight: var(--en-heading-1-weight);
  line-height: var(--en-heading-1-lh);
  letter-spacing: var(--en-heading-1-ls);
}

.en-heading-2 {
  font-family: var(--font-en);
  font-size: var(--en-heading-2-size);
  font-weight: var(--en-heading-2-weight);
  line-height: var(--en-heading-2-lh);
  letter-spacing: var(--en-heading-2-ls);
}

/* ------------------------------------------------------------------
   SECTION HEADING (shared component)
   ------------------------------------------------------------------ */
.section-heading {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0 auto var(--space-40);
}

.section-heading__deco {
  font-family: var(--font-heading);
  font-size: var(--heading-1-size);
  font-weight: var(--heading-1-weight);
  line-height: var(--heading-1-lh);
  letter-spacing: var(--heading-1-ls);
  background: linear-gradient(to bottom, rgba(255, 202, 64, 0.6), rgba(255, 255, 255, 0));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  text-align: center;
}

.section-heading__title {
  font-family: var(--font-heading);
  font-size: var(--heading-2-size);
  font-weight: var(--heading-2-weight);
  line-height: var(--heading-2-lh);
  letter-spacing: var(--heading-2-ls);
  color: var(--color-font-primary);
  text-align: center;
  margin-top: -30px;
}

@media (max-width: 768px) {
  .section-heading__deco {
    font-size: 48px;
  }

  .section-heading__title {
    margin-top: -22px;
  }
}

@media (max-width: 480px) {
  .section-heading__deco {
    font-size: 36px;
  }

  .section-heading__title {
    margin-top: -16px;
  }
}

/* ------------------------------------------------------------------
   BUTTONS
   ------------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--btn-primary-font);
  font-weight: var(--btn-primary-weight);
  border-radius: var(--btn-primary-radius);
  cursor: pointer;
  transition: var(--transition-default);
  white-space: nowrap;
  text-align: center;
  border: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-bg-01);
  outline-offset: 2px;
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled,
.btn--disabled {
  opacity: var(--color-state-disabled-opacity);
  pointer-events: none;
}

.btn--primary {
  background-color: var(--btn-primary-bg);
  color: var(--btn-primary-color);
}

.btn--primary:hover {
  background-image: linear-gradient(
    to bottom,
    var(--color-state-hover-overlay),
    transparent
  );
}

.btn--primary.btn--lg {
  padding: var(--btn-primary-lg-py) var(--btn-primary-lg-px);
  font-size: var(--btn-primary-lg-size);
  min-width: var(--btn-primary-lg-min-w);
  box-shadow: var(--btn-primary-lg-shadow);
}

.btn--primary.btn--sm {
  padding: var(--btn-primary-sm-py) var(--btn-primary-sm-px);
  font-size: var(--btn-primary-sm-size);
  min-width: var(--btn-primary-sm-min-w);
  box-shadow: var(--btn-primary-sm-shadow);
}

.btn--secondary {
  background-color: var(--btn-secondary-bg);
  color: var(--btn-secondary-color);
}

.btn--secondary:hover {
  background-image: linear-gradient(
    to bottom,
    var(--color-state-hover-overlay),
    transparent
  );
}

.btn--secondary.btn--lg {
  padding: var(--btn-secondary-lg-py) var(--btn-secondary-lg-px);
  font-size: var(--btn-secondary-lg-size);
  min-width: var(--btn-secondary-lg-min-w);
}

.btn--secondary.btn--sm {
  padding: var(--btn-secondary-sm-py) var(--btn-secondary-sm-px);
  font-size: var(--btn-secondary-sm-size);
  min-width: var(--btn-secondary-sm-min-w);
}

.btn--outline {
  background-color: var(--btn-outline-bg);
  color: inherit;
  border: var(--btn-outline-border);
}

.btn--outline:hover {
  background-color: var(--color-white-06);
}

.btn--outline.btn--lg {
  padding: var(--btn-outline-lg-py) var(--btn-outline-lg-px);
  font-size: var(--btn-outline-lg-size);
  min-width: var(--btn-outline-lg-min-w);
}

.btn--outline.btn--sm {
  padding: var(--btn-outline-sm-py) var(--btn-outline-sm-px);
  font-size: var(--btn-outline-sm-size);
  min-width: var(--btn-outline-sm-min-w);
}

/* ------------------------------------------------------------------
   BUTTON — LINE Brand
   ------------------------------------------------------------------ */
.btn--line {
  background-color: var(--color-line-green);
  color: var(--color-font-primary);
  border: none;
}

.btn--line:hover {
  background-color: #0C9200;
  background-image: none;
}

.btn--line:focus-visible {
  outline: 2px solid var(--color-line-green);
  outline-offset: 2px;
}

/* ------------------------------------------------------------------
   ARROW BUTTON
   ------------------------------------------------------------------ */
.arrow-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--arrow-btn-size);
  height: var(--arrow-btn-size);
  border-radius: var(--arrow-btn-radius);
  border: var(--arrow-btn-border);
  background: transparent;
  cursor: pointer;
  transition: var(--transition-default);
}

.arrow-btn:hover {
  background: linear-gradient(
    to bottom,
    var(--color-state-hover-overlay),
    transparent
  );
}

.arrow-btn:focus-visible {
  outline: 2px solid var(--color-bg-01);
  outline-offset: 2px;
}

.arrow-btn:disabled {
  opacity: var(--color-state-disabled-opacity);
  pointer-events: none;
}

.arrow-btn__icon {
  width: var(--arrow-btn-icon-size);
  height: var(--arrow-btn-icon-size);
}

/* ------------------------------------------------------------------
   TAB GROUP (shared component)
   ------------------------------------------------------------------ */
.tab-group {
  display: inline-flex;
  align-items: center;
  background: var(--tab-container-bg);
  border: var(--tab-container-border);
  border-radius: var(--tab-container-radius);
  padding: 4px;
  gap: 4px;
}

.tab-group__item {
  padding: var(--tab-item-py) var(--tab-item-px);
  font-family: var(--font-heading);
  font-size: var(--tab-item-size);
  font-weight: var(--tab-item-weight);
  letter-spacing: var(--tab-item-ls);
  color: var(--color-font-primary);
  background: transparent;
  border: none;
  border-radius: var(--tab-item-active-radius);
  cursor: pointer;
  transition: var(--transition-default);
  white-space: nowrap;
}

.tab-group__item:hover {
  background: var(--color-white-06);
}

.tab-group__item.is-active {
  background: var(--tab-item-active-bg);
  color: var(--tab-item-active-color);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}

/* ------------------------------------------------------------------
   FAQ ACCORDION (shared component)
   ------------------------------------------------------------------ */
.faq-accordion {
  width: 100%;
}

.faq-item {
  border-bottom: var(--faq-divider);
}

.faq-item__header {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 24px 0;
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition-default);
  text-align: left;
  gap: 16px;
}

.faq-item__q {
  font-family: var(--font-en);
  font-size: 24px;
  font-weight: 400;
  color: var(--faq-q-color);
  flex-shrink: 0;
  min-width: 40px;
}

.faq-item__question {
  flex: 1;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 400;
  color: var(--color-font-primary);
  transition: var(--transition-default);
}

.faq-item__chevron {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform 300ms ease;
  color: var(--color-font-primary);
}

.faq-item:hover .faq-item__q,
.faq-item:hover .faq-item__question {
  color: var(--faq-open-color);
}

.faq-item:hover .faq-item__question {
  font-weight: 700;
}

.faq-item.is-open .faq-item__q,
.faq-item.is-open .faq-item__question {
  color: var(--faq-open-color);
}

.faq-item.is-open .faq-item__question {
  font-weight: 700;
}

.faq-item.is-open .faq-item__chevron {
  transform: rotate(90deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms ease;
}

.faq-item__answer-inner {
  padding: 0 0 24px 56px;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.8;
  color: var(--color-gray-02);
}

/* ------------------------------------------------------------------
   CTA BUTTONS (shared component)
   ------------------------------------------------------------------ */
.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
}

@media (max-width: 768px) {
  .cta-buttons {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
  }

  .cta-buttons .btn {
    width: 100%;
  }
}