/* ===========================================================
   Colorful Pepper — Brand & Portfolio Site v1
   Design tokens live in :root. Swap these to re-theme the site
   without touching structural rules below.
   =========================================================== */

:root {
  /* --- Brand colors --- */
  --color-berry-1: #FF3B5C;
  --color-berry-2: #7C4DFF;
  --gradient-berry: linear-gradient(135deg, var(--color-berry-1) 0%, var(--color-berry-2) 100%);

  --color-navy: #1F2437;
  --color-navy-soft: rgba(31, 36, 55, 0.68);
  --color-navy-faint: rgba(31, 36, 55, 0.14);
  --color-navy-hairline: rgba(31, 36, 55, 0.10);

  --color-bg: #FBFAF8;
  --color-bg-alt: #F3F0EC;
  --color-surface: #FFFFFF;
  --color-white: #FFFFFF;

  /* --- Typography --- */
  --font-body: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  --fs-hero: clamp(2.35rem, 6vw + 0.5rem, 5.5rem); /* 最小=320px幅・最大=コピー列663pxに7字が収まる上限 */
  --fs-h2: clamp(2rem, 4vw + 1rem, 3.4rem);
  --fs-lead: clamp(1.05rem, 0.6vw + 0.9rem, 1.3rem);
  --fs-body: 1rem;
  --fs-small: 0.875rem;
  --fs-eyebrow: 0.8rem;

  --lh-tight: 1.12;
  --lh-heading: 1.3;
  --lh-body: 1.85;

  --tracking-eyebrow: 0.16em;

  /* --- Spacing rhythm (8px base) --- */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4.5rem;
  --space-7: 6rem;
  --space-8: 9rem;

  --section-pad-y: clamp(4.5rem, 9vw, 8rem);
  --container-max: 1180px;
  --container-pad: clamp(1.25rem, 5vw, 3rem);

  /* --- Motion --- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 180ms;
  --dur-med: 420ms;

  /* --- Effects --- */
  --radius-sm: 6px;
  --radius-md: 14px;
  --focus-ring: 0 0 0 3px rgba(124, 77, 255, 0.35), 0 0 0 1.5px var(--color-berry-2);
}

/* ===================== Reset & base ===================== */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

html, body { margin: 0; padding: 0; }

body {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--color-navy);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

ul { list-style: none; margin: 0; padding: 0; }

h1, h2, h3 { margin: 0; font-weight: 900; letter-spacing: -0.01em; }
p { margin: 0; }

button { font: inherit; }

/* Focus visibility — deliberate, brand-colored ring, never removed silently */
a:focus-visible,
button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

::selection {
  background: var(--color-berry-2);
  color: var(--color-white);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--color-navy);
  color: var(--color-white);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top var(--dur-fast) var(--ease-out);
  font-weight: 700;
  font-size: var(--fs-small);
}
.skip-link:focus {
  top: 1rem;
}

/* ===================== Layout helpers ===================== */

.wrap {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: var(--section-pad-y);
}

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

.section-eyebrow {
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--color-berry-2);
  margin-bottom: var(--space-2);
}

.section-heading {
  font-size: var(--fs-h2);
  line-height: var(--lh-heading);
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.section-lead {
  font-size: var(--fs-lead);
  color: var(--color-navy-soft);
  max-width: 46ch;
  margin-bottom: var(--space-5);
}

.grad-text {
  background: var(--gradient-berry);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 語の途中で改行させない（見出し・リード文の分節単位） */
.no-break { display: inline-block; }

/* プライバシーポリシーページ */
.policy-wrap { max-width: 720px; }

.policy-heading {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-navy);
  margin-top: var(--space-5);
  margin-bottom: var(--space-2);
}

.policy-text {
  color: var(--color-navy-soft);
  margin-bottom: var(--space-2);
}

.policy-mail {
  color: var(--color-berry-2);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.policy-date {
  margin-top: var(--space-5);
  font-size: var(--fs-small);
  color: var(--color-navy-soft);
}

/* スクリーンリーダー専用テキスト */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ヒーロー見出しは「アイデアを、/動くカタチに。」の2行固定 */
.hero-title .no-break { display: block; }

/* ===================== Header ===================== */

.site-header {
  position: fixed;
  inset-inline: 0;
  top: 0;
  z-index: 100;
  background: rgba(251, 250, 248, 0.78);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--color-navy-hairline);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -0.01em;
  min-width: 0;
}

.brand-mark { flex-shrink: 0; }

.brand-name { white-space: nowrap; }

.site-nav ul {
  display: flex;
  align-items: center;
  gap: clamp(0.65rem, 2.5vw, 2.25rem);
}

.site-nav a {
  font-size: var(--fs-small);
  font-weight: 500;
  color: var(--color-navy);
  position: relative;
  padding-block: 0.3rem;
  white-space: nowrap;
  background-image: var(--gradient-berry);
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 2px;
  transition: background-size var(--dur-med) var(--ease-out);
}

.site-nav a:hover,
.site-nav a:focus-visible {
  background-size: 100% 2px;
}

/* ===================== Hero ===================== */

.hero {
  padding-block-start: clamp(7.5rem, 14vw, 10rem);
  padding-block-end: var(--section-pad-y);
  position: relative;
}

.hero-grid {
  display: grid;
  /* コピー列は「動くカタチに。」7字がfs-hero最大値で1行に収まる幅を確保する */
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 4rem);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: var(--fs-eyebrow);
  font-weight: 700;
  letter-spacing: var(--tracking-eyebrow);
  color: var(--color-navy-soft);
  margin-bottom: var(--space-3);
}

.eyebrow-bar {
  display: inline-block;
  width: 28px;
  height: 3px;
  border-radius: 2px;
  background: var(--gradient-berry);
}

.hero-title {
  font-size: var(--fs-hero);
  line-height: var(--lh-tight);
  color: var(--color-navy);
  margin-bottom: var(--space-4);
}

.hero-lead {
  font-size: var(--fs-lead);
  color: var(--color-navy-soft);
  max-width: 42ch;
  margin-bottom: var(--space-5);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.95rem 1.9rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: transform var(--dur-fast) var(--ease-out), box-shadow var(--dur-fast) var(--ease-out), background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}

.btn-primary {
  background: var(--gradient-berry);
  color: var(--color-white);
  box-shadow: 0 8px 24px -8px rgba(255, 59, 92, 0.45);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -8px rgba(124, 77, 255, 0.5);
}

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

.btn-ghost:hover {
  border-color: var(--color-berry-2);
  color: var(--color-berry-2);
  transform: translateY(-2px);
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: clamp(220px, 32vw, 420px);
}

.hero-glow {
  position: absolute;
  width: clamp(260px, 40vw, 480px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--gradient-berry);
  filter: blur(70px);
  opacity: 0.22;
  z-index: 0;
}

.hero-mark {
  position: relative;
  z-index: 1;
  width: clamp(190px, 26vw, 360px);
  transform: rotate(-6deg);
  filter: drop-shadow(0 24px 40px rgba(31, 36, 55, 0.16));
}

/* ===================== Services ===================== */

.service-list {
  border-top: 1px solid var(--color-navy-hairline);
}

.service-row {
  display: grid;
  grid-template-columns: clamp(3.5rem, 8vw, 6rem) 1fr;
  gap: clamp(1.25rem, 4vw, 3rem);
  align-items: start;
  padding-block: clamp(2rem, 5vw, 3rem);
  border-bottom: 1px solid var(--color-navy-hairline);
  transition: padding-inline-start var(--dur-med) var(--ease-out);
}

.service-row:hover {
  padding-inline-start: 0.5rem;
}

.service-num {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1;
  background: var(--gradient-berry);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.85;
}

.service-title {
  font-size: clamp(1.3rem, 2vw, 1.7rem);
  margin-bottom: 0.6rem;
  color: var(--color-navy);
}

.service-desc {
  color: var(--color-navy-soft);
  max-width: 62ch;
  font-size: 0.98rem;
}

/* ===================== Works ===================== */

.works-list {
  border-top: 1px solid var(--color-navy-hairline);
}

.works-row {
  border-bottom: 1px solid var(--color-navy-hairline);
}

.works-link,
.works-static {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: clamp(1.75rem, 4vw, 2.5rem);
}

.works-link {
  transition: padding-inline-start var(--dur-med) var(--ease-out);
}

.works-link:hover,
.works-link:focus-visible {
  padding-inline-start: 0.5rem;
}

.works-link:hover .works-arrow,
.works-link:focus-visible .works-arrow {
  transform: translateX(6px);
  color: var(--color-berry-2);
}

.works-title {
  font-size: clamp(1.2rem, 2vw, 1.55rem);
  margin-bottom: 0.5rem;
  color: var(--color-navy);
}

.works-desc {
  color: var(--color-navy-soft);
  font-size: 0.97rem;
  max-width: 62ch;
}

.works-arrow {
  flex-shrink: 0;
  font-size: 1.6rem;
  color: var(--color-navy-faint);
  transition: transform var(--dur-med) var(--ease-out), color var(--dur-med) var(--ease-out);
}

/* ===================== About ===================== */

.about-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
}

.about-bar {
  width: 4px;
  border-radius: 2px;
  background: var(--gradient-berry);
}

.about-text {
  font-size: var(--fs-lead);
  color: var(--color-navy-soft);
  max-width: 62ch;
}

/* ===================== Contact ===================== */

.contact-email {
  display: inline-block;
  font-size: clamp(1.5rem, 4vw, 2.4rem);
  font-weight: 900;
  color: var(--color-navy);
  letter-spacing: -0.01em;
  padding-block-end: 0.35rem;
  background-image: var(--gradient-berry);
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 100% 3px;
  transition: color var(--dur-fast) var(--ease-out);
  word-break: break-word;
}

.contact-email:hover,
.contact-email:focus-visible {
  color: var(--color-berry-2);
}

/* ===================== Footer ===================== */

.site-footer {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.85);
  padding-block: var(--space-6);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.6rem;
}

.footer-mark { margin-bottom: 0.4rem; }

.footer-copyright {
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--color-white);
}

.footer-tagline {
  font-size: var(--fs-small);
  color: rgba(255, 255, 255, 0.6);
}

.footer-link {
  font-size: var(--fs-small);
  color: rgba(255, 255, 255, 0.6);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--dur-fast) var(--ease-out);
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--color-white);
}

/* ===================== Reveal-on-scroll ===================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms var(--ease-out), transform 700ms var(--ease-out);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===================== Responsive ===================== */

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    order: -1;
    min-height: clamp(180px, 50vw, 320px);
  }
  .hero-mark {
    width: clamp(140px, 38vw, 240px);
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .about-bar {
    width: 100%;
    height: 4px;
  }
}

@media (max-width: 640px) {
  .site-nav ul {
    gap: 0.6rem;
  }
  .site-nav a {
    font-size: 0.78rem;
  }
  .brand-name {
    font-size: 0.9rem;
  }
  .service-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .works-link,
  .works-static {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
  .works-arrow {
    align-self: flex-end;
  }
  .cta-row {
    flex-direction: column;
    align-items: stretch;
  }
  .btn {
    justify-content: center;
  }
}

@media (max-width: 400px) {
  .brand-name {
    display: none;
  }
  .site-nav ul {
    gap: 0.5rem;
  }
  .site-nav a {
    font-size: 0.72rem;
  }
}

@media (max-width: 380px) {
  :root {
    --container-pad: 1.1rem;
  }
}