/* ==========================================================================
   ベーススタイル
   リセット（Tailwind CSS v4 Preflight 相当）＋ デザイントークン ＋ 共通スタイル
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Preflight 用の既定フォント変数（Tailwind CSS v4 の theme 相当）
   -------------------------------------------------------------------------- */

:root {
  --font-sans: ui-sans-serif, system-ui, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --default-font-family: var(--font-sans);
  --default-mono-font-family: var(--font-mono);
}

/* --------------------------------------------------------------------------
   2. リセット（Tailwind CSS v4 Preflight）
   -------------------------------------------------------------------------- */

/*
   1. Prevent padding and border from affecting element width. (https://github.com/mozdevs/cssremedy/issues/4)
   2. Remove default margins and padding
   3. Reset all borders.
 */
*,
::after,
::before,
::backdrop,
::file-selector-button {
  box-sizing: border-box; /* 1 */
  margin: 0; /* 2 */
  padding: 0; /* 2 */
  border: 0 solid; /* 3 */
}

/*
   1. Use a consistent sensible line-height in all browsers.
   2. Prevent adjustments of font size after orientation changes in iOS.
   3. Use a more readable tab size.
   4. Use the user's configured `sans` font-family by default.
   5. Use the user's configured `sans` font-feature-settings by default.
   6. Use the user's configured `sans` font-variation-settings by default.
   7. Disable tap highlights on iOS.
 */
html {
  line-height: 1.5; /* 1 */
  -webkit-text-size-adjust: 100%; /* 2 */
  tab-size: 4; /* 3 */
  font-family: var(
    --default-font-family,
    ui-sans-serif,
    system-ui,
    sans-serif,
    'Apple Color Emoji',
    'Segoe UI Emoji',
    'Segoe UI Symbol',
    'Noto Color Emoji'
  ); /* 4 */
  font-feature-settings: var(--default-font-feature-settings, normal); /* 5 */
  font-variation-settings: var(--default-font-variation-settings, normal); /* 6 */
  -webkit-tap-highlight-color: transparent; /* 7 */
}

/*
   1. Add the correct height in Firefox.
   2. Correct the inheritance of border color in Firefox. (https://bugzilla.mozilla.org/show_bug.cgi?id=190655)
   3. Reset the default border style to a 1px solid border.
 */
hr {
  height: 0; /* 1 */
  color: inherit; /* 2 */
  border-top-width: 1px; /* 3 */
}

/*
   Add the correct text decoration in Chrome, Edge, and Safari.
 */
abbr:where([title]) {
  -webkit-text-decoration: underline dotted;
  text-decoration: underline dotted;
}

/*
   Remove the default font size and weight for headings.
 */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-size: inherit;
  font-weight: inherit;
}

/*
   Reset links to optimize for opt-in styling instead of opt-out.
 */
a {
  color: inherit;
  -webkit-text-decoration: inherit;
  text-decoration: inherit;
}

/*
   Add the correct font weight in Edge and Safari.
 */
b,
strong {
  font-weight: bolder;
}

/*
   1. Use the user's configured `mono` font-family by default.
   2. Use the user's configured `mono` font-feature-settings by default.
   3. Use the user's configured `mono` font-variation-settings by default.
   4. Correct the odd `em` font sizing in all browsers.
 */
code,
kbd,
samp,
pre {
  font-family: var(
    --default-mono-font-family,
    ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    Consolas,
    'Liberation Mono',
    'Courier New',
    monospace
  ); /* 1 */
  font-feature-settings: var(--default-mono-font-feature-settings, normal); /* 2 */
  font-variation-settings: var(--default-mono-font-variation-settings, normal); /* 3 */
  font-size: 1em; /* 4 */
}

/*
   Add the correct font size in all browsers.
 */
small {
  font-size: 80%;
}

/*
   Prevent `sub` and `sup` elements from affecting the line height in all browsers.
 */
sub,
sup {
  font-size: 75%;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sub {
  bottom: -0.25em;
}

sup {
  top: -0.5em;
}

/*
   1. Remove text indentation from table contents in Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=999088, https://bugs.webkit.org/show_bug.cgi?id=201297)
   2. Correct table border color inheritance in all Chrome and Safari. (https://bugs.chromium.org/p/chromium/issues/detail?id=935729, https://bugs.webkit.org/show_bug.cgi?id=195016)
   3. Remove gaps between table borders by default.
 */
table {
  text-indent: 0; /* 1 */
  border-color: inherit; /* 2 */
  border-collapse: collapse; /* 3 */
}

/*
   Use the modern Firefox focus style for all focusable elements.
 */
:-moz-focusring {
  outline: auto;
}

/*
   Add the correct vertical alignment in Chrome and Firefox.
 */
progress {
  vertical-align: baseline;
}

/*
   Add the correct display in Chrome and Safari.
 */
summary {
  display: list-item;
}

/*
   Make lists unstyled by default.
 */
ol,
ul,
menu {
  list-style: none;
}

/*
   1. Make replaced elements `display: block` by default. (https://github.com/mozdevs/cssremedy/issues/14)
   2. Add `vertical-align: middle` to align replaced elements more sensibly by default. (https://github.com/jensimmons/cssremedy/issues/14#issuecomment-634934210)
   This can trigger a poorly considered lint error in some tools but is included by design.
 */
img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
  display: block; /* 1 */
  vertical-align: middle; /* 2 */
}

/*
   Constrain images and videos to the parent width and preserve their intrinsic aspect ratio. (https://github.com/mozdevs/cssremedy/issues/14)
 */
img,
video {
  max-width: 100%;
  height: auto;
}

/*
   1. Inherit font styles in all browsers.
   2. Remove border radius in all browsers.
   3. Remove background color in all browsers.
   4. Ensure consistent opacity for disabled states in all browsers.
 */
button,
input,
select,
optgroup,
textarea,
::file-selector-button {
  font: inherit; /* 1 */
  font-feature-settings: inherit; /* 1 */
  font-variation-settings: inherit; /* 1 */
  letter-spacing: inherit; /* 1 */
  color: inherit; /* 1 */
  border-radius: 0; /* 2 */
  background-color: transparent; /* 3 */
  opacity: 1; /* 4 */
}

/*
   Restore default font weight.
 */
:where(select:is([multiple], [size])) optgroup {
  font-weight: bolder;
}

/*
   Restore indentation.
 */
:where(select:is([multiple], [size])) optgroup option {
  padding-inline-start: 20px;
}

/*
   Restore space after button.
 */
::file-selector-button {
  margin-inline-end: 4px;
}

/*
   Reset the default placeholder opacity in Firefox. (https://github.com/tailwindlabs/tailwindcss/issues/3300)
 */
::placeholder {
  opacity: 1;
}

/*
   Set the default placeholder color to a semi-transparent version of the current text color in browsers that do not
   crash when using `color-mix(…)` with `currentcolor`. (https://github.com/tailwindlabs/tailwindcss/issues/17194)
 */
@supports (not (-webkit-appearance: -apple-pay-button)) /* Not Safari */ or
  (contain-intrinsic-size: 1px) /* Safari 17+ */ {
  ::placeholder {
    color: color-mix(in oklab, currentcolor 50%, transparent);
  }
}

/*
   Prevent resizing textareas horizontally by default.
 */
textarea {
  resize: vertical;
}

/*
   Remove the inner padding in Chrome and Safari on macOS.
 */
::-webkit-search-decoration {
  -webkit-appearance: none;
}

/*
   1. Ensure date/time inputs have the same height when empty in iOS Safari.
   2. Ensure text alignment can be changed on date/time inputs in iOS Safari.
 */
::-webkit-date-and-time-value {
  min-height: 1lh; /* 1 */
  text-align: inherit; /* 2 */
}

/*
   Prevent height from changing on date/time inputs in macOS Safari when the input is set to `display: block`.
 */
::-webkit-datetime-edit {
  display: inline-flex;
}

/*
   Remove excess padding from pseudo-elements in date/time inputs to ensure consistent height across browsers.
 */
::-webkit-datetime-edit-fields-wrapper {
  padding: 0;
}

::-webkit-datetime-edit,
::-webkit-datetime-edit-year-field,
::-webkit-datetime-edit-month-field,
::-webkit-datetime-edit-day-field,
::-webkit-datetime-edit-hour-field,
::-webkit-datetime-edit-minute-field,
::-webkit-datetime-edit-second-field,
::-webkit-datetime-edit-millisecond-field,
::-webkit-datetime-edit-meridiem-field {
  padding-block: 0;
}

/*
   Center dropdown marker shown on inputs with paired `<datalist>`s in Chrome. (https://github.com/tailwindlabs/tailwindcss/issues/18499)
 */
::-webkit-calendar-picker-indicator {
  line-height: 1;
}

/*
   Remove the additional `:invalid` styles in Firefox. (https://github.com/mozilla/gecko-dev/blob/2f9eacd9d3d995c937b4251a5557d95d494c9be1/layout/style/res/forms.css#L728-L737)
 */
:-moz-ui-invalid {
  box-shadow: none;
}

/*
   Correct the inability to style the border radius in iOS Safari.
 */
button,
input:where([type='button'], [type='reset'], [type='submit']),
::file-selector-button {
  appearance: button;
}

/*
   Correct the cursor style of increment and decrement buttons in Safari.
 */
::-webkit-inner-spin-button,
::-webkit-outer-spin-button {
  height: auto;
}

/*
   Make elements with the HTML hidden attribute stay hidden by default.
 */
[hidden]:where(:not([hidden='until-found'])) {
  display: none !important;
}

/* --------------------------------------------------------------------------
   3. デザイントークン・共通スタイル（元: src/app/globals.css）
   -------------------------------------------------------------------------- */

/* ===========================================
   株式会社ビーソリューションズ Global Styles
   =========================================== */
/* CSS Variables for Design Tokens */
:root {
  /* Colors */
  --color-text-primary: #3a3a3a;
  --color-text-secondary: #6c6c6c;
  --color-text-tertiary: #b7b7b7;
  --color-text-light: #b7b7b7;
  --color-background: #f9f9f9;
  --color-blue: #4480e8;
  --color-white: #ffffff;
  --color-border: #e0e0e0;
  --color-card-side: rgba(255, 255, 255, 0.7);
  /* Gradients */
  --gradient-accent: linear-gradient(to bottom, #74e2e1, #539ee6);
  --gradient-logo: linear-gradient(135deg, #79ede1, var(--color-blue));
  --gradient-bg-main: linear-gradient(
    128.316deg,
    #e3ecee 11.053%,
    #e5e5e5 86.427%
  );
  --gradient-bg-footer: linear-gradient(
    138.561deg,
    #e3ecee 11.053%,
    #f2f2f2 86.427%
  );
  --gradient-card-center: linear-gradient(
    134.965deg,
    rgba(237, 246, 251, 0.7) 8.2789%,
    rgba(237, 237, 237, 0.7) 98.666%
  );
  /* Font Families */
  --font-heading: "Barlow Condensed", sans-serif;
  --font-heading-en: "Barlow Condensed", sans-serif;
  --font-logo: "futura-pt", sans-serif;
  --font-accent-en: "Baskerville Old Face", "Playfair Display", serif;
  --font-body: "Noto Sans JP", sans-serif;
  /* Font Sizes */
  --font-size-hero: 70px;
  --font-size-section-title: 70px;
  --font-size-section-md: 60px;
  --font-size-subtitle: 27px;
  --font-size-category: 25px;
  --font-size-body: 18px;
  --font-size-list: 16px;
  --font-size-tag: 15px;
  --font-size-nav-en: 20px;
  --font-size-nav-ja: 11px;
  --font-size-copyright: 12px;
  --font-size-number: 140px;
  /* Font Weights */
  --font-weight-thin: 100;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-black: 900;
  /* Line Heights */
  --line-height-hero: 1.4;
  --line-height-section: 1.5;
  --line-height-body: 1.9;
  --line-height-list: 50px;
  /* Layout */
  --max-width: 1400px;
  --padding-x-desktop: 80px;
  --padding-x-tablet: 40px;
  --padding-x-mobile: 20px;
  /* Header */
  --header-height: 116px;
  --header-z-index: 1000;
  /* Common Sizes */
  --button-width: 350px;
  --button-height: 60px;
  --tag-width: 150px;
  --tag-height: 30px;
  --divider-width: 2px;
  --card-width: 466px;
}

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

html {
  scroll-behavior: auto;
}

body {
  font-family: "Noto Sans JP", sans-serif;
  font-weight: 400;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 300;
  line-height: 1.4;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

/* Container */
@media (max-width: 1024px) {
  :root {
    --padding-x: 60px;
  }
}

@media (max-width: 768px) {
  :root {
    --padding-x: 20px;
    --font-size-hero: 40px;
    --font-size-section-title: 50px;
    --font-size-section-md: 36px;
    --font-size-subtitle: 20px;
  }
}

/* Section Title (English) */
.section-title {
  font-family: "Barlow Condensed", sans-serif;
  font-weight: 100;
  font-size: var(--font-size-section-title);
  color: var(--color-text-primary);
  line-height: normal;
}

/* Gradient Divider */
.gradient-divider {
  width: 2px;
  border-radius: 140px;
  background: linear-gradient(
    to bottom,
    var(--gradient-start),
    var(--gradient-end)
  );
}

/* Category Tag */
.category-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 150px;
  height: 30px;
  padding: 0 16px;
  background: transparent;
  border: 1px solid var(--color-text-secondary);
  font-size: 15px;
  color: var(--color-text-primary);
}

/* ===========================================
   InView Animation System
   =========================================== */
/* CSS Variables for InView animations */
:root {
  --inview-duration: 800ms;
  --inview-delay: 0ms;
  --inview-distance: 30px;
  --inview-easing: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* Base state for elements with data-inview attribute */
[data-inview] {
  opacity: 0;
  transform: translateY(var(--inview-distance));
  transition: opacity var(--inview-duration) var(--inview-easing)
      var(--inview-delay),
    transform var(--inview-duration) var(--inview-easing) var(--inview-delay);
  will-change: opacity, transform;
}

/* Animated state when element is in view */
[data-inview].is-inview {
  opacity: 1;
  transform: translateY(0);
}

/* Disable animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  [data-inview] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

@media screen and (max-width: 640px) {
  :root {
    --font-size-body: 3.5vw;
  }
}

/* ===========================================
   Responsive Display Utilities
   =========================================== */
/* SP Only - モバイルのみ表示 */
.sp-only {
  display: none;
}

@media screen and (max-width: 768px) {
  .sp-only {
    display: inline;
  }
}

/* --------------------------------------------------------------------------
   4. ページ表示時のフェードイン（元: framer-motion の PageTransition）
      opacity 0 → 1 / 1秒 / cubic-bezier(0.25, 0.46, 0.45, 0.94)
   -------------------------------------------------------------------------- */

.page-transition {
  animation: page-fade-in 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) backwards;
}

@keyframes page-fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}