/* ===========================
   ebird Corporate Site - CSS
   Modern Static HTML Version
   =========================== */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
  --black:      #111111;
  --white:      #ffffff;
  --gray-light: #f7f7f7;
  --gray-mid:   #e5e5e5;
  --gray-text:  #666666;
  --rainbow-1:  #e63946;
  --rainbow-2:  #f4a261;
  --rainbow-3:  #2a9d8f;
  --rainbow-4:  #457b9d;
  --rainbow-5:  #6a4c93;
  --gradient:   linear-gradient(135deg, #e63946, #f4a261, #e9c46a, #2a9d8f, #457b9d, #6a4c93);
  --font-jp:    'Noto Sans JP', sans-serif;
  --font-en:    'Inter', sans-serif;
  --transition: 0.3s ease;
  --shadow:     0 4px 24px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 40px rgba(0,0,0,0.14);
  --radius:     8px;
  --max-width:  1100px;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-jp);
  color: var(--black);
  background: var(--white);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* --- Layout --- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-sm { padding: 48px 0; }

/* --- Rainbow Accent Line --- */
.rainbow-bar {
  height: 3px;
  background: var(--gradient);
  width: 48px;
  border-radius: 2px;
  margin: 12px 0 24px 0;
}
.rainbow-bar.center { margin: 12px auto 24px; }

/* ===========================
   HEADER / NAV
   =========================== */
header {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  border-bottom: 1px solid var(--gray-mid);
  transition: box-shadow var(--transition);
}
header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.08); }

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 1.4rem;
  letter-spacing: 0.02em;
  color: var(--black);
}
.logo-icon {
  width: 32px;
  height: 32px;
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--black);
  position: relative;
  padding-bottom: 4px;
  transition: color var(--transition);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--gradient);
  border-radius: 1px;
  transition: width var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-links a:hover { color: var(--black); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--black);
  border-radius: 1px;
  transition: var(--transition);
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: 72px; left: 0; right: 0; bottom: 0;
  background: var(--white);
  z-index: 999;
  padding: 40px 24px;
  flex-direction: column;
  gap: 32px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  padding: 12px 0;
  border-bottom: 1px solid var(--gray-mid);
}

/* ===========================
   HERO
   =========================== */
.hero {
  margin-top: 72px;
  position: relative;
  height: 520px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #e8f4f8;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #dbeafe 0%, #e0f2fe 40%, #f0fdf4 100%);
}
.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image: radial-gradient(circle at 1px 1px, #000 1px, transparent 0);
  background-size: 24px 24px;
}
.hero-content {
  position: relative;
  text-align: center;
  padding: 0 24px;
}
.hero-tagline {
  font-family: var(--font-en);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 300;
  letter-spacing: 0.08em;
  color: var(--black);
  margin-bottom: 16px;
}
.hero-tagline span {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  font-size: 1rem;
  color: var(--gray-text);
  font-weight: 300;
  letter-spacing: 0.05em;
}

/* Page Hero (inner pages) */
.page-hero {
  margin-top: 72px;
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #dbeafe 0%, #e0f2fe 60%, #f0fdf4 100%);
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image: radial-gradient(circle at 1px 1px, #000 1px, transparent 0);
  background-size: 24px 24px;
}
.page-hero h1 {
  position: relative;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--black);
}

/* Breadcrumb */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.8rem;
  color: var(--gray-text);
}
.breadcrumb a { color: var(--gray-text); }
.breadcrumb a:hover { color: var(--black); }
.breadcrumb span { margin: 0 8px; }

/* ===========================
   SECTION HEADINGS
   =========================== */
.section-heading {
  margin-bottom: 48px;
}
.section-heading.center { text-align: center; }
.section-heading h2 {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.section-heading .sub {
  font-size: 0.8rem;
  color: var(--gray-text);
  letter-spacing: 0.1em;
  margin-top: 4px;
}

/* ===========================
   NEWS SECTION
   =========================== */
.news-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 768px) { .news-grid { grid-template-columns: 1fr; } }

.news-list { display: flex; flex-direction: column; gap: 0; }
.news-item {
  display: flex;
  align-items: baseline;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--gray-mid);
  transition: background var(--transition);
}
.news-item:first-child { border-top: 1px solid var(--gray-mid); }
.news-date {
  font-family: var(--font-en);
  font-size: 0.8rem;
  color: var(--gray-text);
  white-space: nowrap;
  font-weight: 500;
}
.news-title {
  font-size: 0.9rem;
  line-height: 1.6;
}
.news-title a:hover { text-decoration: underline; }

/* Blog Cards */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
@media (max-width: 480px) { .blog-grid { grid-template-columns: 1fr; } }

.blog-card {
  display: flex;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border-radius: var(--radius);
  background: var(--gray-light);
  transition: box-shadow var(--transition), transform var(--transition);
  cursor: pointer;
}
.blog-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.blog-thumb {
  width: 64px; height: 56px;
  object-fit: cover;
  border-radius: 4px;
  background: var(--gray-mid);
  flex-shrink: 0;
}
.blog-thumb-placeholder {
  width: 64px; height: 56px;
  background: var(--gray-mid);
  border-radius: 4px;
  flex-shrink: 0;
}
.blog-info { flex: 1; min-width: 0; }
.blog-card-title {
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.4;
  margin-bottom: 4px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.blog-card-date {
  font-size: 0.75rem;
  color: var(--gray-text);
  font-family: var(--font-en);
}

/* More Button */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}
.btn-dark {
  background: var(--black);
  color: var(--white);
}
.btn-dark:hover {
  background: #333;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.btn-outline {
  background: transparent;
  color: var(--black);
  border: 2px solid var(--black);
}
.btn-outline:hover {
  background: var(--black);
  color: var(--white);
}
.btn-group { margin-top: 24px; }
.btn-arrow::after { content: '→'; }

/* ===========================
   WORKS SECTION (Home)
   =========================== */
.works-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.work-card {
  background: var(--white);
  border: 1px solid var(--gray-mid);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}
.work-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}
.work-card-img {
  width: 100%;
  height: 160px;
  object-fit: contain;
  background: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.work-card-img svg { opacity: 0.3; }
.work-card-body { padding: 20px; }
.work-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-family: var(--font-en);
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--black);
  margin-bottom: 10px;
  text-transform: uppercase;
}
.work-card-title {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.5;
}
.work-card-desc {
  font-size: 0.82rem;
  color: var(--gray-text);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ===========================
   WORKS PAGE (Full List)
   =========================== */
.works-list { display: flex; flex-direction: column; gap: 40px; }
.works-list-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  align-items: start;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--gray-mid);
}
@media (max-width: 600px) {
  .works-list-item {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}
.works-list-img {
  width: 140px; height: 100px;
  object-fit: contain;
  background: var(--gray-light);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.works-list-img svg { opacity: 0.3; }
.works-list-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}
.works-list-desc {
  font-size: 0.88rem;
  color: var(--gray-text);
  line-height: 1.8;
}

/* Category Filter */
.category-filter {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.filter-btn {
  padding: 8px 20px;
  border-radius: 40px;
  border: 1px solid var(--gray-mid);
  font-size: 0.82rem;
  font-weight: 500;
  cursor: pointer;
  background: var(--white);
  transition: all var(--transition);
}
.filter-btn:hover,
.filter-btn.active {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

/* ===========================
   ABOUT PAGE
   =========================== */
.about-greeting {
  padding: 64px 0;
}
.about-greeting p {
  font-size: 1rem;
  line-height: 2;
  color: #333;
  max-width: 640px;
}
.about-greeting p + p { margin-top: 16px; }

.company-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.company-table tr {
  border-bottom: 1px solid var(--gray-mid);
}
.company-table tr:first-child {
  border-top: 1px solid var(--gray-mid);
}
.company-table th {
  text-align: left;
  padding: 20px 16px 20px 0;
  width: 180px;
  font-weight: 500;
  color: var(--gray-text);
  vertical-align: top;
}
.company-table td {
  padding: 20px 0;
  line-height: 1.8;
}
.company-table td ul { list-style: none; }
.company-table td ul li::before {
  content: '— ';
  color: var(--gray-text);
}

/* ===========================
   CONTACT / FORM
   =========================== */
.contact-form-wrap { max-width: 680px; }

.form-group { margin-bottom: 28px; }
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--black);
}
.form-label .required {
  color: #e63946;
  margin-left: 4px;
  font-size: 0.75rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .form-row { grid-template-columns: 1fr; } }

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--gray-mid);
  border-radius: var(--radius);
  font-family: var(--font-jp);
  font-size: 0.9rem;
  color: var(--black);
  background: var(--white);
  transition: border-color var(--transition), box-shadow var(--transition);
  appearance: none;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--black);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.06);
}
.form-textarea { resize: vertical; min-height: 140px; line-height: 1.8; }
.form-select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23666' stroke-width='1.5' fill='none'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 40px; }

.checkbox-group { display: flex; flex-direction: column; gap: 10px; }
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  cursor: pointer;
}
.checkbox-label input[type="checkbox"] { width: 18px; height: 18px; cursor: pointer; }

.form-phone { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: center; gap: 8px; }
.phone-sep { color: var(--gray-text); font-weight: 300; }

.form-note { font-size: 0.8rem; color: var(--gray-text); margin-top: 6px; }

.form-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 40px; }
.btn-reset {
  background: transparent;
  color: var(--gray-text);
  border: 1px solid var(--gray-mid);
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-reset:hover { border-color: #999; color: var(--black); }
.btn-submit {
  background: var(--black);
  color: var(--white);
  border: none;
  padding: 14px 40px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-jp);
  letter-spacing: 0.05em;
  transition: all var(--transition);
}
.btn-submit:hover {
  background: #333;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  transform: translateY(-1px);
}

/* ===========================
   CONTACT STRIP
   =========================== */
.contact-strip {
  background: var(--black);
  color: var(--white);
  padding: 48px 0;
  text-align: center;
}
.contact-strip-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}
.contact-strip-label {
  font-family: var(--font-en);
  font-size: 1rem;
  font-weight: 300;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: #aaa;
}
.contact-strip-tel {
  font-family: var(--font-en);
  font-size: 2.2rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.contact-strip-tel a { color: var(--white); }
.contact-strip-tel a:hover { color: #ccc; }

/* ===========================
   FOOTER
   =========================== */
footer {
  background: var(--black);
  color: var(--white);
  padding: 40px 0 24px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-en);
  font-weight: 600;
  font-size: 1.2rem;
  letter-spacing: 0.04em;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px 32px;
}
.footer-nav a {
  font-size: 0.8rem;
  color: #aaa;
  letter-spacing: 0.05em;
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--white); }
.footer-copy {
  font-size: 0.75rem;
  color: #666;
  margin-top: 8px;
}

/* ===========================
   DIVIDER
   =========================== */
.divider {
  height: 1px;
  background: var(--gray-mid);
  margin: 0;
}

/* ===========================
   UTILITIES
   =========================== */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.bg-gray { background: var(--gray-light); }

/* ===========================
   RESPONSIVE
   =========================== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .section { padding: 56px 0; }
  .hero { height: 400px; }
  .page-hero { height: 160px; }
  .page-hero h1 { font-size: 1.5rem; }
  .section-heading h2 { font-size: 1.5rem; }
  .contact-strip-tel { font-size: 1.6rem; }
  .company-table th { width: 120px; font-size: 0.82rem; }
  .company-table td { font-size: 0.85rem; }
}

@media (max-width: 480px) {
  .works-grid { grid-template-columns: 1fr; }
}