/* styles.css — nain.jp Phase 1 */

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

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-body);
  line-height: var(--line-height);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-neon);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent-hover);
}

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

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

/* ================================
   Notice Bar
   ================================ */
.notice-bar {
  background-color: var(--notice-bg);
  color: var(--notice-text);
  text-align: center;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
  line-height: 1.5;
}

.notice-bar a {
  color: var(--notice-link);
  text-decoration: underline;
  font-weight: 600;
}

.notice-bar a:hover {
  color: #ffffff;
}

/* ================================
   Header
   ================================ */
.site-header {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
  background-color: rgba(35, 36, 55, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: flex;
  align-items: center;
  transition: opacity var(--transition);
}

.site-logo img {
  height: 28px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.8;
}

.site-logo:hover {
  opacity: 0.7;
  text-decoration: none;
}

.site-nav {
  display: flex;
  gap: var(--space-sm);
}

.site-nav a {
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-light);
  padding: 0.4em 0.8em;
  border-radius: var(--radius-sm);
  letter-spacing: 0.01em;
  transition: color var(--transition), background-color var(--transition);
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--color-neon);
  background-color: rgba(232, 160, 180, 0.06);
}

.lang-switch {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  border: 1px solid var(--color-text-light);
  border-radius: var(--radius-sm);
  padding: 0.25em 0.6em;
  opacity: 0.7;
  transition: opacity var(--transition), border-color var(--transition);
}

.lang-switch:hover {
  opacity: 1;
  border-color: var(--color-neon);
}

/* ================================
   Hero
   ================================ */
.hero {
  text-align: center;
  padding: 12rem var(--space-sm) 10rem;
  background: url('../images/hero-bg.webp') center 40% / cover no-repeat,
              url('../images/hero-bg.jpg') center 40% / cover no-repeat,
              var(--hero-bg);
  position: relative;
  overflow: hidden;
}

.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 45%, rgba(240, 184, 200, 0.12) 0%, transparent 55%),
    linear-gradient(180deg, rgba(35, 36, 55, 0.4) 0%, rgba(35, 36, 55, 0.2) 40%, rgba(35, 36, 55, 0.45) 100%);
  pointer-events: none;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 260px;
  background: linear-gradient(to bottom, transparent 0%, rgba(35, 36, 55, 0.4) 40%, var(--color-bg) 100%);
  pointer-events: none;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-hero);
  font-weight: 200;
  letter-spacing: 0.35em;
  color: var(--color-neon);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  position: relative;
  text-shadow:
    0 0 20px rgba(240, 184, 200, 0.6),
    0 0 60px rgba(240, 184, 200, 0.3),
    0 0 120px rgba(240, 184, 200, 0.15),
    0 0 200px rgba(240, 184, 200, 0.08);
}

.hero-logo {
  display: block;
  margin: 0 auto;
  width: clamp(200px, 30vw, 360px);
  height: auto;
  color: #f0b8d0;
  filter:
    drop-shadow(0 0 8px rgba(240, 184, 208, 0.8))
    drop-shadow(0 0 30px rgba(240, 184, 208, 0.5))
    drop-shadow(0 0 60px rgba(240, 184, 208, 0.3))
    drop-shadow(0 0 120px rgba(217, 70, 168, 0.2));
  animation: neon-pulse 4s ease-in-out infinite;
}

@keyframes neon-pulse {
  0%, 100% { filter: drop-shadow(0 0 8px rgba(240,184,208,0.8)) drop-shadow(0 0 30px rgba(240,184,208,0.5)) drop-shadow(0 0 60px rgba(240,184,208,0.3)) drop-shadow(0 0 120px rgba(217,70,168,0.2)); }
  50%      { filter: drop-shadow(0 0 14px rgba(240,184,208,1)) drop-shadow(0 0 45px rgba(240,184,208,0.6)) drop-shadow(0 0 90px rgba(240,184,208,0.4)) drop-shadow(0 0 150px rgba(217,70,168,0.3)); }
}

.hero-slogan {
  font-family: var(--font-hero);
  font-size: var(--font-size-xl);
  color: var(--hero-text);
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.8;
  position: relative;
  text-shadow: 0 1px 16px rgba(0, 0, 0, 0.5);
}

/* ================================
   Sections
   ================================ */
.section {
  padding: var(--space-lg) var(--space-sm);
}

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

.section--projects {
  background: url('../images/projects-bg.webp') center / cover no-repeat,
              url('../images/projects-bg.jpg') center / cover no-repeat,
              var(--color-section-alt);
  position: relative;
}

.section--projects::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(30, 29, 48, 0.82);
  pointer-events: none;
}

.section--projects > .container {
  position: relative;
  z-index: 1;
}

.section-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--space-md);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  position: relative;
  padding-bottom: 0.75rem;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 2rem;
  height: 2px;
  background: var(--color-glow);
  border-radius: 1px;
}

.lead {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
  line-height: 2;
}

/* ================================
   Projects
   ================================ */
.project-main {
  margin-bottom: var(--space-lg);
  padding: var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: rgba(30, 29, 48, 0.5);
  transition: border-color var(--transition);
}

.project-main:hover {
  border-color: rgba(232, 160, 180, 0.2);
}

.project-name {
  font-family: var(--font-heading);
  font-size: var(--font-size-2xl);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.project-name a {
  color: var(--color-text);
}

.project-name a:hover {
  color: var(--color-accent);
}

.project-logo {
  height: 1em;
  width: auto;
  display: block;
}

.project-desc {
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.project-link {
  display: inline-block;
  font-weight: 500;
  padding: 0.6em 1.6em;
  background-color: rgba(232, 160, 180, 0.15);
  color: var(--color-neon);
  border: 1px solid rgba(232, 160, 180, 0.25);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition), border-color var(--transition);
  letter-spacing: 0.02em;
}

.project-link:hover {
  background-color: rgba(232, 160, 180, 0.25);
  border-color: rgba(232, 160, 180, 0.4);
  color: var(--color-neon);
}

.project-sub-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.project-sub {
  padding: var(--space-sm) var(--space-sm) var(--space-sm) var(--space-md);
  border-left: 2px solid var(--color-border);
  background-color: rgba(30, 29, 48, 0.4);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition);
}

.project-sub:hover {
  border-color: var(--color-glow);
}

.project-sub h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-xs);
  color: var(--color-text-light);
}

.project-sub p {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* Lab Notes */
.section-subtitle {
  font-family: var(--font-heading);
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--color-text-light);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  opacity: 0.8;
}

.lab-notes-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm);
}

.lab-note {
  padding: var(--space-sm) var(--space-sm) var(--space-sm) var(--space-md);
  border-left: 1px dashed var(--color-border);
  background-color: rgba(30, 29, 48, 0.3);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition);
}

.lab-note:hover {
  border-color: var(--color-glow);
}

.lab-note h4 {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-xs);
  color: var(--color-text);
  opacity: 0.9;
}

.lab-note p {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  opacity: 0.85;
}

/* ================================
   Milestones
   ================================ */
.milestone-list {
  list-style: none;
  border-left: 2px solid var(--color-border);
  padding-left: var(--space-md);
}

.milestone {
  position: relative;
  margin-bottom: var(--space-md);
  padding-left: var(--space-sm);
  padding-bottom: var(--space-xs);
  transition: transform var(--transition);
}

.milestone:hover {
  transform: translateX(4px);
}

.milestone::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--space-md) - 5px);
  top: 0.5em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-glow);
  box-shadow: 0 0 8px rgba(212, 160, 176, 0.4);
}

.milestone:last-child {
  margin-bottom: 0;
}

.milestone-year {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
  letter-spacing: 0.02em;
}

.milestone-text {
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ================================
   Contact
   ================================ */
#contact p {
  margin-bottom: var(--space-xs);
}

.contact-lead {
  color: var(--color-text-light);
  margin-bottom: var(--space-sm) !important;
}

#contact a {
  display: inline-block;
  padding: 0.6em 1.6em;
  background-color: rgba(232, 160, 180, 0.15);
  color: var(--color-neon);
  border: 1px solid rgba(232, 160, 180, 0.25);
  border-radius: var(--radius-sm);
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: background-color var(--transition), border-color var(--transition);
}

#contact a:hover {
  background-color: rgba(232, 160, 180, 0.25);
  border-color: rgba(232, 160, 180, 0.4);
  color: var(--color-neon);
}

/* ================================
   Footer
   ================================ */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-lg) var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  background-color: var(--color-section-alt);
}

.site-footer .container {
  text-align: center;
}

.footer-info {
  margin-bottom: var(--space-sm);
}

.footer-company {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--font-size-lg);
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.footer-address {
  margin-top: 0.25rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xs) var(--space-sm);
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: var(--color-text-light);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-neon);
}

.footer-copy {
  color: var(--color-text-light);
}

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

/* Small mobile — 320px safety */
@media (max-width: 374px) {
  .hero-slogan {
    font-size: var(--font-size-lg);
  }

  .info-table th {
    width: 6em;
  }

  .notice-bar {
    font-size: 0.75rem;
  }
}

/* Tablet+ */
@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }

  .hero {
    padding: 14rem var(--space-md) 12rem;
  }

  .section {
    padding: var(--space-xl) var(--space-md);
  }

  .project-sub-list {
    grid-template-columns: 1fr 1fr;
  }
}

/* Desktop */
@media (min-width: 1024px) {
  .hero {
    padding: 16rem var(--space-md) 14rem;
  }
}

/* ================================
   About page
   ================================ */
.hero--compact {
  padding: var(--space-lg) var(--space-sm);
  background: var(--hero-bg);
  color: var(--hero-text);
}

.hero-title--sm {
  font-size: var(--font-size-2xl);
  color: var(--hero-text);
}

/* Company info table */
.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table th,
.info-table td {
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.info-table th {
  width: 8em;
  font-weight: 600;
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

/* History */
.history-block {
  margin-bottom: var(--space-md);
}

.history-block:last-child {
  margin-bottom: 0;
}

.history-phase {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
  padding-left: 0.75em;
  border-left: 3px solid var(--color-glow);
}

/* Link list */
.link-list {
  list-style: none;
}

.link-list li {
  margin-bottom: var(--space-xs);
}

.link-list a {
  font-weight: 600;
  transition: color var(--transition), padding-left var(--transition);
}

.link-list a:hover {
  padding-left: 0.5em;
}

/* ================================
   Legal pages
   ================================ */
.legal-content h3 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-top: var(--space-md);
  margin-bottom: var(--space-xs);
}

.legal-content p {
  margin-bottom: var(--space-sm);
}

.legal-content ol,
.legal-content ul {
  margin-bottom: var(--space-sm);
  padding-left: 1.5em;
}

.legal-content li {
  margin-bottom: var(--space-xs);
}