/* ==========================================================
   style.css — ハル｜コーダー Portfolio
   構成:
   01. CSS Variables
   02. Reset & Base
   03. Scroll Animation
   04. Canvas (花びらパーティクル)
   05. Header / Nav
   06. Mobile Nav
   07. Hero
   08. Section 共通
   09. About
   10. Skills
   11. Works
   12. Contact
   13. Footer
   14. Responsive — Tablet (〜900px)
   15. Responsive — SP (〜640px)
========================================================== */

/* ----------------------------------------------------------
   01. CSS Variables
---------------------------------------------------------- */
:root {
  --mimosa:       #F5C842;
  --mimosa-light: #FDF4C2;
  --mimosa-pale:  #FFFDE8;
  --blue:         #4A9BAF;
  --blue-light:   #A8D5E0;
  --blue-pale:    #EAF6FA;
  --white:        #FEFEFE;
  --ink:          #2B2B2B;
  --ink-soft:     #5A5A5A;
  --ink-muted:    #9A9A9A;
  --radius:       16px;
  --font-en:      'Cormorant Garamond', serif;
  --font-dm:      'DM Sans', sans-serif;
  --font-jp:      'Noto Sans JP', sans-serif;
  --ease:         cubic-bezier(0.22, 1, 0.36, 1);
  --transition:   0.3s ease;
}

/* ----------------------------------------------------------
   02. Reset & Base
---------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-jp);
  background: var(--white);
  color: var(--ink);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ----------------------------------------------------------
   03. Scroll Animation
---------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal-left.visible,
.reveal-right.visible {
  opacity: 1;
  transform: none;
}

/* ----------------------------------------------------------
   04. Canvas (花びらパーティクル)
---------------------------------------------------------- */
#petal-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.35;
}

/* ----------------------------------------------------------
   05. Header / Nav
---------------------------------------------------------- */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 0 6vw;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(254, 254, 254, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(245, 200, 66, 0.18);
  transition: box-shadow var(--transition);
}
header.scrolled {
  box-shadow: 0 2px 20px rgba(74, 155, 175, 0.1);
}

/* ロゴ */
.logo {
  font-family: var(--font-en);
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--ink);
}
.logo span {
  color: var(--mimosa);
  font-style: italic;
}

/* ナビリンク */
nav ul {
  display: flex;
  gap: 2.4rem;
  align-items: center;
}
nav a {
  font-family: var(--font-dm);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  position: relative;
  transition: color var(--transition);
}
nav a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--mimosa);
  transition: width var(--transition);
}
nav a:hover { color: var(--ink); }
nav a:hover::after { width: 100%; }

/* Contactボタン */
.nav-contact {
  background: var(--mimosa);
  color: var(--ink) !important;
  padding: 0.45rem 1.2rem;
  border-radius: 100px;
  font-weight: 400 !important;
  transition: background var(--transition), transform 0.2s !important;
}
.nav-contact::after { display: none !important; }
.nav-contact:hover {
  background: #e8b820 !important;
  transform: translateY(-1px);
}

/* ハンバーガーボタン */
.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.burger span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.3s, opacity 0.3s;
}
.burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ----------------------------------------------------------
   06. Mobile Nav
---------------------------------------------------------- */
.mobile-nav {
  display: none;
  position: fixed;
  inset: 68px 0 0 0;
  background: rgba(254, 254, 254, 0.97);
  backdrop-filter: blur(20px);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.06em;
  color: var(--ink);
  transition: color var(--transition);
}
.mobile-nav a:hover { color: var(--mimosa); }

/* ----------------------------------------------------------
   07. Hero
---------------------------------------------------------- */
#hero {
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  padding: 100px 8vw 80px;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

/* 背景グラデーション */
#hero::before {
  content: '';
  position: absolute;
  top: -15%;
  right: -8%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, var(--blue-pale) 0%, transparent 65%);
  border-radius: 50%;
  z-index: -1;
}
#hero::after {
  content: '';
  position: absolute;
  bottom: -10%;
  left: -8%;
  width: 45vw;
  height: 45vw;
  background: radial-gradient(circle, var(--mimosa-pale) 0%, transparent 65%);
  border-radius: 50%;
  z-index: -1;
}

/* テキストエリア */
.hero-text {
  position: relative;
  z-index: 2;
}

/* — CODER タグ */
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-dm);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 1.6rem;
  opacity: 0;
  animation: fadeUp 0.8s var(--ease) 0.3s forwards;
}
.hero-tag::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--blue);
}

/* 名前 */
.hero-name {
  font-family: var(--font-en);
  font-size: clamp(5rem, 10vw, 9rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 1.2rem;
  opacity: 0;
  animation: fadeUp 0.9s var(--ease) 0.45s forwards;
}
.hero-name em {
  font-style: italic;
  color: var(--mimosa);
  display: block;
}

/* サブキャッチ */
.hero-catch {
  font-family: var(--font-dm);
  font-size: clamp(0.72rem, 1.1vw, 0.88rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 3rem;
  opacity: 0;
  animation: fadeUp 0.9s var(--ease) 0.6s forwards;
}

/* ボタン群 */
.hero-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.9s var(--ease) 0.75s forwards;
}

/* ボタン共通 */
.btn-primary {
  background: var(--mimosa);
  color: var(--ink);
  padding: 0.8rem 2.2rem;
  border-radius: 100px;
  font-family: var(--font-dm);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  transition: background var(--transition), transform 0.2s, box-shadow var(--transition);
}
.btn-primary:hover {
  background: #e8b820;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 200, 66, 0.35);
}
.btn-outline {
  border: 1.5px solid var(--blue-light);
  color: var(--blue);
  padding: 0.8rem 2.2rem;
  border-radius: 100px;
  font-family: var(--font-dm);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  transition: border-color var(--transition), background var(--transition), transform 0.2s;
}
.btn-outline:hover {
  background: var(--blue-pale);
  border-color: var(--blue);
  transform: translateY(-2px);
}

/* ミモザビジュアルエリア */
.hero-visual {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  height: 100%;
  opacity: 0;
  animation: fadeIn 1s var(--ease) 0.6s forwards;
}

/* ミモザSVGラッパー：画面右半分に大きく */
.mimosa-wrap {
  position: relative;
  width: clamp(300px, 44vw, 580px);
  aspect-ratio: 1 / 1.1;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* SVG本体 */
.mimosa-svg {
  width: 100%;
  height: 100%;
  overflow: visible;
  filter: drop-shadow(0 12px 32px rgba(245, 200, 66, 0.2));
  animation: mimosaFloat 7s ease-in-out infinite;
}

@keyframes mimosaFloat {
  0%, 100% { transform: rotate(-1.5deg) translateY(0); }
  50%       { transform: rotate(1.5deg) translateY(-10px); }
}

/* 枝のdraw-onアニメーション */
.mimosa-branches path {
  stroke-dasharray: 400;
  stroke-dashoffset: 400;
  animation: drawBranch 2s var(--ease) 0.8s forwards;
}
.mimosa-branches path:nth-child(2)  { animation-delay: 1.0s; }
.mimosa-branches path:nth-child(3)  { animation-delay: 1.1s; }
.mimosa-branches path:nth-child(4)  { animation-delay: 1.15s; }
.mimosa-branches path:nth-child(5)  { animation-delay: 1.2s; }
.mimosa-branches path:nth-child(6)  { animation-delay: 1.25s; }
.mimosa-branches path:nth-child(7)  { animation-delay: 1.3s; }
.mimosa-branches path:nth-child(8)  { animation-delay: 1.35s; }
.mimosa-branches path:nth-child(9)  { animation-delay: 1.4s; }
.mimosa-branches path:nth-child(10) { animation-delay: 1.45s; }

@keyframes drawBranch {
  to { stroke-dashoffset: 0; }
}

/* 花のpop-inアニメーション */
.mimosa-flowers circle {
  transform-origin: center;
  transform-box: fill-box;
  opacity: 0;
  transform: scale(0);
  animation: popIn 0.4s var(--ease) forwards;
}
.flower-group-1 circle:nth-child(1)  { animation-delay: 1.6s; }
.flower-group-1 circle:nth-child(2)  { animation-delay: 1.65s; }
.flower-group-1 circle:nth-child(3)  { animation-delay: 1.7s; }
.flower-group-1 circle:nth-child(4)  { animation-delay: 1.75s; }
.flower-group-1 circle:nth-child(5)  { animation-delay: 1.8s; }
.flower-group-1 circle:nth-child(6)  { animation-delay: 1.85s; }
.flower-group-1 circle:nth-child(7)  { animation-delay: 1.9s; }
.flower-group-1 circle:nth-child(8)  { animation-delay: 1.95s; }
.flower-group-1 circle:nth-child(9)  { animation-delay: 2.0s; }
.flower-group-1 circle:nth-child(10) { animation-delay: 2.05s; }
.flower-group-2 circle:nth-child(1)  { animation-delay: 1.8s; }
.flower-group-2 circle:nth-child(2)  { animation-delay: 1.85s; }
.flower-group-2 circle:nth-child(3)  { animation-delay: 1.9s; }
.flower-group-2 circle:nth-child(4)  { animation-delay: 1.95s; }
.flower-group-2 circle:nth-child(5)  { animation-delay: 2.0s; }
.flower-group-2 circle:nth-child(6)  { animation-delay: 2.05s; }
.flower-group-3 circle:nth-child(1)  { animation-delay: 1.7s; }
.flower-group-3 circle:nth-child(2)  { animation-delay: 1.75s; }
.flower-group-3 circle:nth-child(3)  { animation-delay: 1.8s; }
.flower-group-3 circle:nth-child(4)  { animation-delay: 1.85s; }
.flower-group-3 circle:nth-child(5)  { animation-delay: 1.9s; }
.flower-group-3 circle:nth-child(6)  { animation-delay: 1.95s; }
.flower-group-3 circle:nth-child(7)  { animation-delay: 2.0s; }
.flower-group-3 circle:nth-child(8)  { animation-delay: 2.05s; }
.flower-group-3 circle:nth-child(9)  { animation-delay: 2.1s; }
.flower-group-3 circle:nth-child(10) { animation-delay: 2.15s; }
.flower-group-4 circle:nth-child(1)  { animation-delay: 1.85s; }
.flower-group-4 circle:nth-child(2)  { animation-delay: 1.9s; }
.flower-group-4 circle:nth-child(3)  { animation-delay: 1.95s; }
.flower-group-4 circle:nth-child(4)  { animation-delay: 2.0s; }
.flower-group-4 circle:nth-child(5)  { animation-delay: 2.05s; }
.flower-group-4 circle:nth-child(6)  { animation-delay: 2.1s; }
.flower-group-5 circle:nth-child(1)  { animation-delay: 1.75s; }
.flower-group-5 circle:nth-child(2)  { animation-delay: 1.8s; }
.flower-group-5 circle:nth-child(3)  { animation-delay: 1.85s; }
.flower-group-5 circle:nth-child(4)  { animation-delay: 1.9s; }
.flower-group-5 circle:nth-child(5)  { animation-delay: 1.95s; }
.flower-group-5 circle:nth-child(6)  { animation-delay: 2.0s; }
.flower-group-5 circle:nth-child(7)  { animation-delay: 2.05s; }
.flower-group-5 circle:nth-child(8)  { animation-delay: 2.1s; }
.flower-group-5 circle:nth-child(9)  { animation-delay: 2.15s; }
.flower-group-5 circle:nth-child(10) { animation-delay: 2.2s; }
.flower-group-5 circle:nth-child(11) { animation-delay: 2.25s; }
.flower-group-6 circle:nth-child(1)  { animation-delay: 1.9s; }
.flower-group-6 circle:nth-child(2)  { animation-delay: 1.95s; }
.flower-group-6 circle:nth-child(3)  { animation-delay: 2.0s; }
.flower-group-6 circle:nth-child(4)  { animation-delay: 2.05s; }
.flower-group-6 circle:nth-child(5)  { animation-delay: 2.1s; }
.flower-group-6 circle:nth-child(6)  { animation-delay: 2.15s; }
.flower-group-7 circle:nth-child(1)  { animation-delay: 1.9s; }
.flower-group-7 circle:nth-child(2)  { animation-delay: 1.95s; }
.flower-group-7 circle:nth-child(3)  { animation-delay: 2.0s; }
.flower-group-7 circle:nth-child(4)  { animation-delay: 2.05s; }
.flower-group-7 circle:nth-child(5)  { animation-delay: 2.1s; }
.flower-group-7 circle:nth-child(6)  { animation-delay: 2.15s; }

@keyframes popIn {
  0%   { opacity: 0; transform: scale(0); }
  70%  { transform: scale(1.15); }
  100% { opacity: 1; transform: scale(1); }
}

/* 葉のフェードイン */
.mimosa-leaves ellipse {
  opacity: 0;
  animation: fadeIn 0.6s ease forwards;
}
.mimosa-leaves ellipse:nth-child(1) { animation-delay: 2.0s; }
.mimosa-leaves ellipse:nth-child(2) { animation-delay: 2.05s; }
.mimosa-leaves ellipse:nth-child(3) { animation-delay: 2.1s; }
.mimosa-leaves ellipse:nth-child(4) { animation-delay: 2.15s; }
.mimosa-leaves ellipse:nth-child(5) { animation-delay: 2.2s; }
.mimosa-leaves ellipse:nth-child(6) { animation-delay: 2.25s; }
.mimosa-leaves ellipse:nth-child(7) { animation-delay: 2.3s; }
.mimosa-leaves ellipse:nth-child(8) { animation-delay: 2.35s; }

/* フローティングバッジ */
.badge {
  position: absolute;
  background: var(--white);
  border-radius: 12px;
  padding: 0.6rem 1rem;
  box-shadow: 0 4px 20px rgba(74, 155, 175, 0.15);
  font-family: var(--font-dm);
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  animation: float 4s ease-in-out infinite;
  z-index: 10;
}
.badge-1 { top: 18%;    right: -2%; animation-delay: 0s; }
.badge-2 { bottom: 22%; left: -2%;  animation-delay: 1.5s; }
.badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--mimosa);
  flex-shrink: 0;
}
.badge-dot.blue { background: var(--blue); }

/* スクロールヒント */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-dm);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  opacity: 0;
  animation: fadeIn 1s ease 1.8s forwards;
}
.scroll-hint-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--mimosa), transparent);
  animation: scrollLine 1.6s ease-in-out infinite;
}

/* ----------------------------------------------------------
   Keyframes
---------------------------------------------------------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}
@keyframes scrollLine {
  0%   { transform: scaleY(0); transform-origin: top; }
  50%  { transform: scaleY(1); transform-origin: top; }
  51%  { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ----------------------------------------------------------
   08. Section 共通
---------------------------------------------------------- */
section { position: relative; z-index: 1; }

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 100px 6vw;
}

.section-label {
  font-family: var(--font-dm);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--blue);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.8rem;
}
.section-label::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--blue);
}

.section-title {
  font-family: var(--font-en);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 300;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}
.section-title em { font-style: italic; color: var(--mimosa); }

.section-sub {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-bottom: 4rem;
}

/* セクション間の区切り線 */
.section-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    var(--mimosa-light),
    var(--blue-light),
    transparent
  );
}

/* ----------------------------------------------------------
   09. About
---------------------------------------------------------- */
#about { background: var(--white); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 5rem;
  align-items: center;
}

.about-img-wrap { position: relative; }

.about-img {
  width: 100%;
  aspect-ratio: 4/5;
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--mimosa-pale), var(--blue-pale));
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
}
.about-img img { width: 70%; object-fit: cover; }
.about-img svg { width: 50%; opacity: 0.4; }


/* 装飾円 */
.about-img-deco {
  position: absolute;
  top: -16px;
  right: -16px;
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--mimosa);
  opacity: 0.25;
}
.about-img-deco2 {
  position: absolute;
  bottom: -12px;
  left: -12px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--blue-light);
  opacity: 0.4;
}

.about-body {
  font-size: 0.93rem;
  line-height: 2;
  color: var(--ink-soft);
  margin-bottom: 2.4rem;
}

.about-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2rem;
}
.tag {
  background: var(--mimosa-pale);
  border: 1px solid rgba(245, 200, 66, 0.4);
  color: var(--ink);
  font-size: 0.78rem;
  padding: 0.35rem 0.9rem;
  border-radius: 100px;
  font-family: var(--font-dm);
}
.tag.blue {
  background: var(--blue-pale);
  border-color: rgba(74, 155, 175, 0.3);
  color: var(--blue);
}

/* ----------------------------------------------------------
   10. Skills
---------------------------------------------------------- */
#skills { background: var(--mimosa-pale); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.skill-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem 1.8rem;
  border: 1px solid rgba(245, 200, 66, 0.2);
  transition: transform var(--transition), box-shadow var(--transition);
}
.skill-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(74, 155, 175, 0.12);
}

.skill-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.2rem;
  font-size: 1.3rem;
}
.skill-icon.yellow { background: var(--mimosa-light); }
.skill-icon.blue   { background: var(--blue-pale); }

.skill-card h3 {
  font-family: var(--font-dm);
  font-size: 0.88rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 1.2rem;
  color: var(--ink);
}

.skill-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.skill-pill {
  background: var(--mimosa-pale);
  border: 1px solid rgba(245, 200, 66, 0.35);
  font-size: 0.75rem;
  padding: 0.28rem 0.75rem;
  border-radius: 100px;
  font-family: var(--font-dm);
  color: var(--ink-soft);
}
.skill-pill.b {
  background: var(--blue-pale);
  border-color: rgba(74, 155, 175, 0.3);
  color: var(--blue);
}

/* ----------------------------------------------------------
   11. Works
---------------------------------------------------------- */
#works { background: var(--white); }

.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.work-card {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--white);
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: transform 0.35s, box-shadow 0.35s;
}
.work-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 56px rgba(74, 155, 175, 0.14);
}

.work-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
}
.work-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.work-card:hover .work-thumb img { transform: scale(1.04); }

/* サムネイルプレースホルダー（画像差し替え後は不要） */
.work-thumb-inner {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  transition: transform 0.5s var(--ease);
}
.work-card:hover .work-thumb-inner { transform: scale(1.04); }
.wt1 { background: linear-gradient(135deg, var(--mimosa-light) 0%, var(--blue-pale) 100%); }
.wt2 { background: linear-gradient(135deg, var(--blue-pale) 0%, var(--mimosa-pale) 100%); }
.wt3 { background: linear-gradient(135deg, #FDE8F5 0%, var(--mimosa-pale) 100%); }
.wt4 { background: linear-gradient(135deg, var(--mimosa-pale) 0%, #E8F5E0 100%); }

.work-body { padding: 1.4rem 1.6rem 1.6rem; }

.work-tags {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}
.work-tag {
  font-family: var(--font-dm);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--blue);
  background: var(--blue-pale);
  padding: 0.2rem 0.65rem;
  border-radius: 100px;
}

.work-card h3 {
  font-family: var(--font-en);
  font-size: 1.35rem;
  font-weight: 400;
  margin-bottom: 0.4rem;
  color: var(--ink);
}
.work-card p {
  font-size: 0.82rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

.work-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  font-family: var(--font-dm);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--blue);
  transition: gap var(--transition);
}
.work-link:hover { gap: 0.7rem; }
.work-link::after { content: '→'; }

/* ----------------------------------------------------------
   12. Contact
---------------------------------------------------------- */
#contact { background: var(--blue-pale); }

.contact-wrap {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}
.contact-wrap .section-label {
  justify-content: center;
}
.contact-wrap .section-label::before { display: none; }
.contact-wrap .section-sub { margin-bottom: 2.8rem; }

.contact-form {
  background: var(--white);
  border-radius: 24px;
  padding: 2.8rem;
  box-shadow: 0 8px 40px rgba(74, 155, 175, 0.1);
  text-align: left;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}
.form-group label {
  font-family: var(--font-dm);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}
.form-group input,
.form-group textarea {
  border: 1.5px solid rgba(0, 0, 0, 0.1);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  font-family: var(--font-jp);
  font-size: 0.88rem;
  color: var(--ink);
  background: var(--white);
  outline: none;
  width: 100%;
  resize: vertical;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--mimosa);
  box-shadow: 0 0 0 3px rgba(245, 200, 66, 0.18);
}
.form-group textarea { min-height: 120px; }

.form-submit {
  width: 100%;
  background: var(--mimosa);
  color: var(--ink);
  border: none;
  padding: 0.9rem;
  border-radius: 100px;
  font-family: var(--font-dm);
  font-size: 0.88rem;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background var(--transition), transform 0.2s, box-shadow var(--transition);
}
.form-submit:hover {
  background: #e8b820;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(245, 200, 66, 0.35);
}

/* ----------------------------------------------------------
   13. Footer
---------------------------------------------------------- */
footer {
  background: var(--ink);
  padding: 2.8rem 6vw;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-logo {
  font-family: var(--font-en);
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--white);
  letter-spacing: 0.06em;
}
.footer-logo span {
  color: var(--mimosa);
  font-style: italic;
}

.footer-links {
  display: flex;
  gap: 1.6rem;
}
.footer-links a {
  font-family: var(--font-dm);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.45);
  transition: color var(--transition);
}
.footer-links a:hover { color: var(--mimosa); }

footer small {
  font-family: var(--font-dm);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.5);
}

/* ----------------------------------------------------------
   14. Responsive — Tablet (〜900px)
---------------------------------------------------------- */
@media (max-width: 900px) {
  #hero {
    grid-template-columns: 1fr;
    padding-top: 130px;
    text-align: center;
    gap: 0;
  }
  .hero-name  { font-size: clamp(4rem, 18vw, 7rem); }
  .hero-btns  { justify-content: center; }
  .hero-tag   { justify-content: center; }
  .hero-visual {
    margin-top: 1rem;
    height: auto;
    align-items: center;
  }
  .mimosa-wrap { width: clamp(240px, 65vw, 400px); }
  .badge-1 { top: 10%; right: 0; }
  .badge-2 { bottom: 10%; left: 0; }

  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-img-wrap { max-width: 320px; margin: 0 auto; }

  .skills-grid { grid-template-columns: 1fr 1fr; }

  .works-grid { grid-template-columns: 1fr; }
}

/* ----------------------------------------------------------
   15. Responsive — SP (〜640px)
---------------------------------------------------------- */
@media (max-width: 640px) {
  /* header */
  nav ul   { display: none; }
  .burger  { display: flex; }

  /* hero */
  #hero { padding: 110px 5vw 60px; }
  .mimosa-wrap { width: clamp(200px, 60vw, 320px); }
  .scroll-hint { display: none; }

  /* skills */
  .skills-grid { grid-template-columns: 1fr; }

  /* contact */
  .form-row     { grid-template-columns: 1fr; }
  .contact-form { padding: 1.8rem; }

  /* footer */
  footer { flex-direction: column; text-align: center; }
  .footer-links { justify-content: center; }
}