/* ============================================================
   ORION FIT — Design System
   ============================================================ */

/* ---------- Fonts ----------
   Inter 400/600 and Outfit 700 are loaded with <link> + preconnect from functions.php
   (orionfit_fonts_url). Japanese, Chinese and Korean text uses the system fonts below. */

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Colors */
  --color-bg:          #0D0D0F;
  --color-bg-alt:      #141418;
  --color-surface:     #1A1A1F;
  --color-surface-alt: #22222A;
  --color-border:      rgba(255, 255, 255, 0.06);
  --color-border-hover:rgba(255, 255, 255, 0.12);

  --color-text:        #E8E8EC;
  --color-text-muted:  #8A8A96;
  --color-text-dim:    #5A5A66;

  --color-primary:     #09CFB1;
  --color-primary-rgb: 9, 207, 177;
  --color-primary-dark:#07A58E;
  --color-primary-glow:rgba(9, 207, 177, 0.15);

  --color-accent:      #6C63FF;
  --color-accent-rgb:  108, 99, 255;

  --color-warning:     #FF6B6B;
  --color-success:     #4ADE80;

  /* Typography */
  --font-cjk:     'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Noto Sans JP', 'Yu Gothic UI', Meiryo, 'Noto Sans CJK JP', 'Apple SD Gothic Neo', 'Malgun Gothic', 'Microsoft YaHei', 'PingFang SC', sans-serif;
  --font-heading: 'Outfit', var(--font-cjk);
  --font-body:    'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, var(--font-cjk);

  --fs-hero:  clamp(2rem, 8vw, 4.5rem);
  --fs-h1:    clamp(1.6rem, 6vw, 3rem);
  --fs-h2:    clamp(1.3rem, 5vw, 2.2rem);
  --fs-h3:    clamp(1.1rem, 4vw, 1.5rem);
  --fs-body:  1rem;
  --fs-small: 0.875rem;
  --fs-xs:    0.75rem;

  /* Spacing */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  1.5rem;
  --space-lg:  2.5rem;
  --space-xl:  4rem;
  --space-2xl: 6rem;
  --space-3xl: 8rem;

  /* Borders */
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full:9999px;

  /* Transitions */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring:cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration:   0.3s;

  /* Shadows */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 24px rgba(0,0,0,0.4);
  --shadow-lg:  0 8px 40px rgba(0,0,0,0.5);
  --shadow-glow:0 0 40px rgba(var(--color-primary-rgb), 0.2);

  /* Layout */
  --container-max: 1200px;
  --nav-height:    72px;
}

/* ---------- Reset ---------- */
*, *::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-body);
  font-size: var(--fs-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

a { color: var(--color-primary); text-decoration: none; transition: color var(--duration) var(--ease-out); }
a:hover { color: #0BFFCF; }

img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
input, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ---------- Navigation ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--duration);
}

.nav::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(13, 13, 15, 0.8);
  backdrop-filter: blur(20px) saturate(1.8);
  -webkit-backdrop-filter: blur(20px) saturate(1.8);
  transition: background var(--duration) var(--ease-out);
}

.nav--scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.nav--scrolled::before {
  background: rgba(13, 13, 15, 0.95);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--color-text);
  text-decoration: none;
}

.nav__brand picture { display: block; line-height: 0; }

.nav__brand-logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.nav__brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.nav__brand span {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav__link {
  color: var(--color-text-muted);
  font-size: var(--fs-small);
  font-weight: 500;
  padding: 0.4rem 0;
  position: relative;
  transition: color var(--duration) var(--ease-out);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-text);
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--duration) var(--ease-out);
  border-radius: 1px;
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__cta {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-bg) !important;
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--fs-small);
  transition: transform var(--duration) var(--ease-spring), box-shadow var(--duration) var(--ease-out);
}

.nav__cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-glow);
  color: var(--color-bg) !important;
}

/* Mobile menu toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px 8px;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  position: relative;
  z-index: 1002;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--duration) var(--ease-out), opacity var(--duration);
}

.nav__toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav__toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: var(--fs-body);
  transition: all var(--duration) var(--ease-spring);
  text-decoration: none;
  white-space: nowrap;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), #06E8C8);
  color: var(--color-bg);
  box-shadow: 0 4px 20px rgba(var(--color-primary-rgb), 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(var(--color-primary-rgb), 0.4);
  color: var(--color-bg);
}

.btn--outline {
  border: 1.5px solid var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn--outline:hover {
  background: rgba(var(--color-primary-rgb), 0.1);
  transform: translateY(-2px);
  color: var(--color-primary);
}

.btn--ghost {
  color: var(--color-text-muted);
  border: 1.5px solid var(--color-border);
  background: transparent;
}

.btn--ghost:hover {
  border-color: var(--color-border-hover);
  color: var(--color-text);
  background: rgba(255,255,255,0.03);
}

.btn--sm {
  padding: 0.6rem 1.4rem;
  font-size: var(--fs-small);
}

.btn--lg {
  padding: 1.1rem 2.6rem;
  font-size: 1.05rem;
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--duration) var(--ease-out);
}

.card:hover {
  border-color: var(--color-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.card--glass {
  background: rgba(26, 26, 31, 0.6);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.card--glow:hover {
  box-shadow: var(--shadow-glow), var(--shadow-md);
  border-color: rgba(var(--color-primary-rgb), 0.2);
}

/* ---------- Section ---------- */
.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

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

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-xl);
}

.section__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 1rem;
  background: rgba(var(--color-primary-rgb), 0.1);
  border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  border-radius: var(--radius-full);
  color: var(--color-primary);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.section__title {
  font-size: var(--fs-h2);
  margin-bottom: var(--space-sm);
}

.section__subtitle {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* ---------- Feature Icon ---------- */
.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(var(--color-primary-rgb), 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: var(--space-sm);
  flex-shrink: 0;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.footer__brand-logo {
  width: 28px;
  height: 28px;
  border-radius: 6px;
}

.footer__brand span {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer__desc {
  color: var(--color-text-dim);
  font-size: var(--fs-small);
  max-width: 280px;
  line-height: 1.7;
}

.footer__col-title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--fs-small);
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.footer__link {
  color: var(--color-text-dim);
  font-size: var(--fs-small);
  transition: color var(--duration) var(--ease-out);
  padding: 0.35rem 0;
  display: inline-block;
}

.footer__link:hover { color: var(--color-primary); }

.footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--color-text-dim);
  font-size: var(--fs-xs);
}

/* ---------- Page Header ---------- */
.page-header {
  padding-top: calc(var(--nav-height) + var(--space-3xl));
  padding-bottom: var(--space-xl);
  text-align: center;
  position: relative;
  overflow: hidden; /* Prevent horizontal overflow from background blur glow on mobile */
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(ellipse, rgba(var(--color-primary-rgb), 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.page-header__title {
  font-size: var(--fs-h1);
  margin-bottom: var(--space-sm);
}

.page-header__desc {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ---------- Grid Utilities ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-lg); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }

/* ---------- Text Utilities ---------- */
.text-center { text-align: center; }
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-muted { color: var(--color-text-muted); }

/* ---------- Spacing Utilities ---------- */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root {
    --space-3xl: 5rem;
    --space-2xl: 4rem;
  }

  /* Body scroll lock when menu is open */
  body.menu-open {
    overflow: hidden;
    position: fixed;
    width: 100%;
  }

  .nav {
    z-index: 9999;
  }

  .nav__links {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100dvh;
    background: rgba(13, 13, 15, 0.98);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    gap: var(--space-md);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.35s var(--ease-out), visibility 0.35s;
    z-index: 9998;
    padding: calc(var(--nav-height) + var(--space-lg)) var(--space-md) var(--space-xl);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }

  .nav__links.open {
    opacity: 1;
    visibility: visible;
    pointer-events: all;
  }

  .nav__links .nav__link {
    font-size: 1.4rem;
    padding: 0.8rem 1.5rem;
    width: 100%;
    max-width: 280px;
    text-align: center;
    border-radius: var(--radius-md);
    transition: background var(--duration), color var(--duration);
  }

  .nav__links .nav__link:hover,
  .nav__links .nav__link:active {
    background: rgba(var(--color-primary-rgb), 0.1);
    color: var(--color-primary);
  }

  .nav__links .nav__cta {
    margin-top: var(--space-sm);
    padding: 0.8rem 2rem;
    font-size: 1.1rem;
    width: 100%;
    max-width: 280px;
    text-align: center;
  }

  .nav__toggle {
    display: flex;
  }

  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }

  .footer__grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .footer__bottom { flex-direction: column; gap: var(--space-sm); text-align: center; }
}

@media (max-width: 480px) {
  :root {
    --space-3xl: 3.5rem;
  }
  .btn--lg { padding: 0.9rem 2rem; font-size: var(--fs-body); }
}

/* ---------- Language Select (Pulldown) ---------- */
.lang-select-wrapper {
  position: relative;
  margin-left: var(--space-sm);
}

.lang-select {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  padding: 0.4rem 2rem 0.4rem 0.8rem;
  border-radius: var(--radius-full);
  font-size: var(--fs-xs);
  font-weight: 600;
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: rgba(26, 26, 31, 0.8);
  border: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  cursor: pointer;
  transition: all var(--duration) var(--ease-out);
  outline: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238A8A96' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.6rem center;
}

.lang-select:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(var(--color-primary-rgb), 0.2);
}

.lang-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(var(--color-primary-rgb), 0.25);
}

.lang-select option {
  background: var(--color-surface);
  color: var(--color-text);
  padding: 0.5rem;
}

@media (max-width: 768px) {
  .lang-select-wrapper {
    margin-left: 0;
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
    width: 100%;
    max-width: 280px;
    display: flex;
    justify-content: center;
  }

  .lang-select {
    font-size: 1rem;
    padding: 0.7rem 2.5rem 0.7rem 1.2rem;
    width: 100%;
    text-align: center;
    background-color: var(--color-surface);
    border: 1px solid rgba(var(--color-primary-rgb), 0.2);
  }
}