/* ENFI Engineer Guild — thin public site
   Brand tokens aligned with enfi.tech */

:root {
  --navy: #071a36;
  --deep: #04101f;
  --ink: #172031;
  --yellow: #f6d859;
  --gold: #e0ac2b;
  --sky: #5ec4f5;
  --paper: #e8f0f8;
  --muted: #9aafc4;
  --line: rgba(246, 216, 89, 0.28);
  --font-display: "DotGothic16", "Noto Sans JP", sans-serif;
  --font-body: "Noto Sans JP", sans-serif;
  --max: 68rem;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
  --header-h: 4rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--paper);
  background: var(--deep);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--yellow);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  color: #fff;
}

/* —— Atmosphere —— */
.atmosphere {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 90% 60% at 70% 10%, rgba(29, 103, 205, 0.35), transparent 55%),
    radial-gradient(ellipse 70% 50% at 15% 80%, rgba(224, 172, 43, 0.12), transparent 50%),
    linear-gradient(180deg, var(--navy) 0%, var(--deep) 55%, #02080f 100%);
}

.atmosphere__grid {
  position: absolute;
  inset: 0;
  opacity: 0.14;
  background-image:
    linear-gradient(rgba(246, 216, 89, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246, 216, 89, 0.15) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, #000 20%, transparent 75%);
  animation: grid-drift 48s linear infinite;
}

@keyframes grid-drift {
  from { transform: translateY(0); }
  to { transform: translateY(48px); }
}

/* —— Header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid rgba(246, 216, 89, 0.18);
  background: rgba(4, 16, 31, 0.85);
  backdrop-filter: blur(10px);
}

.site-header__inner {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 0 var(--pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 0.1rem;
  color: #fff;
  text-decoration: none;
  font-family: var(--font-display);
  letter-spacing: 0.04em;
}

.brand:hover {
  color: var(--yellow);
}

.brand__mark {
  font-size: 1.15rem;
  line-height: 1;
}

.brand__sub {
  font-size: 0.65rem;
  color: var(--muted);
  font-family: var(--font-body);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.1rem;
  font-size: 0.9rem;
}

.nav a {
  color: var(--paper);
  text-decoration: none;
  font-weight: 500;
}

.nav a[aria-current="page"],
.nav a:hover {
  color: var(--yellow);
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--yellow);
  font-family: var(--font-display);
  padding: 0.4rem 0.7rem;
  cursor: pointer;
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    padding: 0.5rem var(--pad) 1rem;
    background: rgba(4, 16, 31, 0.96);
    border-bottom: 1px solid rgba(246, 216, 89, 0.18);
  }

  .nav.is-open {
    display: flex;
  }

  .nav a {
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }
}

/* —— Layout —— */
.wrap {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 0 var(--pad);
}

.section {
  padding: clamp(3rem, 8vw, 5.5rem) 0;
}

.section__label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--gold);
  margin: 0 0 0.75rem;
}

.section__title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.35rem);
  font-weight: 400;
  line-height: 1.35;
  margin: 0 0 1rem;
  color: #fff;
}

.section__lead {
  margin: 0;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.02rem;
}

/* —— Hero (one composition) —— */
.hero {
  position: relative;
  min-height: calc(100svh - var(--header-h));
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__visual {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(105deg, rgba(4, 16, 31, 0.92) 0%, rgba(4, 16, 31, 0.55) 48%, rgba(4, 16, 31, 0.35) 100%),
    radial-gradient(circle at 75% 40%, rgba(246, 216, 89, 0.22), transparent 42%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cpath fill='%23f6d859' fill-opacity='0.06' d='M0 80h160M80 0v160'/%3E%3Cpath fill='none' stroke='%235ec4f5' stroke-opacity='0.08' d='M20 20h120v120H20z'/%3E%3C/svg%3E");
  background-size: cover, cover, 160px 160px;
  animation: hero-glow 10s ease-in-out infinite alternate;
}

@keyframes hero-glow {
  from { filter: saturate(1); }
  to { filter: saturate(1.15) brightness(1.05); }
}

.hero__frame {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  color: var(--yellow);
  border: 1px solid rgba(246, 216, 89, 0.45);
  padding: 0.45rem 0.85rem;
  margin: 0 0 1.25rem;
  opacity: 0;
  animation: rise 0.8s ease forwards 0.1s;
}

.hero__brand {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 8vw, 4.2rem);
  line-height: 1.15;
  margin: 0 0 1rem;
  color: #fff;
  letter-spacing: 0.02em;
  opacity: 0;
  animation: rise 0.9s ease forwards 0.25s;
}

.hero__brand span {
  display: block;
  color: var(--yellow);
  font-size: 0.55em;
  letter-spacing: 0.08em;
  margin-top: 0.35rem;
}

.hero__lead {
  margin: 0 0 1.75rem;
  max-width: 28rem;
  font-size: clamp(1rem, 2.4vw, 1.15rem);
  color: var(--paper);
  opacity: 0;
  animation: rise 0.9s ease forwards 0.4s;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  opacity: 0;
  animation: rise 0.9s ease forwards 0.55s;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* —— Buttons —— */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.85rem 1.35rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--yellow);
  color: var(--deep);
  border-color: var(--yellow);
}

.btn--primary:hover {
  background: #fff;
  color: var(--deep);
}

.btn--ghost {
  background: transparent;
  color: var(--yellow);
  border-color: rgba(246, 216, 89, 0.55);
}

.btn--ghost:hover {
  background: rgba(246, 216, 89, 0.12);
  color: #fff;
  border-color: var(--yellow);
}

.btn[aria-disabled="true"],
.btn.is-disabled {
  opacity: 0.55;
  pointer-events: none;
}

/* —— Join steps —— */
.steps {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 800px) {
  .steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
  }
}

.step {
  position: relative;
  padding-top: 0.25rem;
  border-top: 2px solid var(--gold);
}

.step__num {
  font-family: var(--font-display);
  color: var(--yellow);
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
}

.step__title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 0 0 0.5rem;
  color: #fff;
}

.step__body {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* —— Reveal on scroll —— */
.reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* —— Member roster —— */
.roster {
  list-style: none;
  margin: 2rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 700px) {
  .roster {
    grid-template-columns: repeat(2, 1fr);
  }
}

.member {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1rem;
  align-items: start;
  padding: 1.1rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.member__avatar {
  width: 4.5rem;
  height: 4.5rem;
  display: grid;
  place-items: center;
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--deep);
  background: linear-gradient(145deg, var(--yellow), var(--gold));
  border: 2px solid rgba(255, 255, 255, 0.2);
  overflow: hidden;
}

.member__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.member__links {
  margin: 0.5rem 0 0;
  font-size: 0.88rem;
  color: var(--muted);
}

.member__link {
  color: var(--yellow);
}

.member__sns-plain {
  color: var(--muted);
}

.field--stack {
  border: 1px solid rgba(246, 216, 89, 0.28);
  padding: 0.85rem 1rem 1rem;
  margin: 0 0 1.1rem;
}

.field--stack legend {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--gold);
  padding: 0 0.35rem;
}

.stack-groups {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: 0.5rem;
}

.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(9.5rem, 1fr));
  gap: 0.45rem 0.65rem;
  margin-top: 0.35rem;
}

.stack-group {
  margin-top: 1rem;
  padding-top: 0.85rem;
  border-top: 1px solid rgba(246, 216, 89, 0.18);
}

.stack-group:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.stack-group__title {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--yellow);
  line-height: 1.4;
  word-break: keep-all;
  overflow-wrap: normal;
}

.stack-option {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  font-size: 0.88rem;
  color: var(--paper);
  cursor: pointer;
}

.stack-option input {
  margin-top: 0.2rem;
  accent-color: var(--yellow);
}

.stack-other {
  grid-column: 1 / -1;
  display: grid;
  gap: 0.5rem;
}

.stack-other__input {
  width: min(100%, 28rem);
  padding: 0.65rem 0.8rem;
  border: 1px solid rgba(246, 216, 89, 0.35);
  background: rgba(4, 16, 31, 0.7);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.stack-chip {
  display: inline-block;
  margin: 0 0.35rem 0.35rem 0;
  padding: 0.2rem 0.45rem;
  border: 1px solid rgba(246, 216, 89, 0.4);
  color: var(--yellow);
  font-size: 0.78rem;
  font-family: var(--font-display);
  letter-spacing: 0.02em;
}

.member__meta,
.member__goal {
  margin: 0.25rem 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.member__stacks {
  margin: 0.45rem 0;
}

.admin-rank-row {
  margin-top: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: end;
}

.admin-rank {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.8rem;
  color: var(--gold);
  font-family: var(--font-display);
}

.admin-rank select {
  min-width: 12rem;
  padding: 0.45rem 0.55rem;
  border: 1px solid rgba(246, 216, 89, 0.35);
  background: rgba(4, 16, 31, 0.7);
  color: var(--paper);
}

.member__name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin: 0 0 0.25rem;
  color: #fff;
}

.member__rank {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--gold);
  margin-bottom: 0.45rem;
}

.member__quest,
.member__bio {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.member__quest {
  margin-bottom: 0.35rem;
  color: var(--paper);
}

/* —— Event calendar —— */
.calendar {
  margin-top: 0.5rem;
  max-width: 40rem;
}

.cal__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.cal__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: #fff;
  font-weight: 400;
}

.cal__nav {
  padding: 0.55rem 0.9rem;
  font-size: 0.85rem;
}

.cal__weekdays,
.cal__days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.35rem;
}

.cal__weekdays {
  margin-bottom: 0.35rem;
}

.cal__dow {
  text-align: center;
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--gold);
  letter-spacing: 0.06em;
  padding: 0.25rem 0;
}

.cal__dow:first-child {
  color: #ff8f8f;
}

.cal__dow:last-child {
  color: var(--sky);
}

.cal__cell {
  position: relative;
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.15rem;
  border: 1px solid rgba(246, 216, 89, 0.18);
  background: rgba(4, 16, 31, 0.55);
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 0.95rem;
  cursor: pointer;
  padding: 0;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.cal__cell:hover {
  border-color: var(--yellow);
  color: #fff;
}

.cal__cell--muted {
  border-color: transparent;
  background: transparent;
  cursor: default;
}

.cal__cell--today {
  box-shadow: inset 0 0 0 1px var(--sky);
}

.cal__cell--event {
  border-color: rgba(246, 216, 89, 0.55);
}

.cal__cell--selected {
  background: rgba(246, 216, 89, 0.2);
  border-color: var(--yellow);
  color: var(--yellow);
}

.cal__dot {
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 0;
  background: var(--yellow);
}

.cal__detail {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(246, 216, 89, 0.28);
}

.event-detail__empty {
  margin: 0;
  color: var(--muted);
}

.event {
  display: grid;
  gap: 0.75rem;
  padding: 0.25rem 0 1.25rem;
}

.event + .event {
  border-top: 1px solid rgba(246, 216, 89, 0.25);
  padding-top: 1.25rem;
}

.event__when {
  font-family: var(--font-display);
  color: var(--yellow);
  letter-spacing: 0.06em;
  margin: 0;
}

.event__title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin: 0;
  color: #fff;
}

.event__meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.event__body {
  margin: 0;
  max-width: 40rem;
}

.page-hero {
  padding: clamp(2.5rem, 7vw, 4rem) 0 0;
}

.page-hero .section__title {
  font-size: clamp(1.9rem, 5vw, 2.8rem);
}

/* —— Footer —— */
.site-footer {
  margin-top: 2rem;
  padding: 2.5rem 0 3rem;
  border-top: 1px solid rgba(246, 216, 89, 0.18);
  color: var(--muted);
  font-size: 0.88rem;
}

.site-footer__inner {
  width: min(100%, var(--max));
  margin: 0 auto;
  padding: 0 var(--pad);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  align-items: flex-start;
}

.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

.site-footer a:hover {
  color: var(--yellow);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

.note {
  margin-top: 1.5rem;
  padding: 1rem 0 0;
  border-top: 1px dashed rgba(154, 175, 196, 0.35);
  font-size: 0.88rem;
  color: var(--muted);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* —— Member apply form —— */
.apply-form {
  margin-top: 2rem;
  max-width: 32rem;
}

.field {
  margin: 0 0 1.1rem;
}

.field label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--gold);
  margin-bottom: 0.35rem;
}

.field .req {
  color: var(--yellow);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid rgba(246, 216, 89, 0.35);
  background: rgba(4, 16, 31, 0.7);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 1rem;
}

.field textarea {
  min-height: 5.5rem;
  resize: vertical;
}

.flash {
  margin: 0 0 1rem;
  color: var(--yellow);
  font-size: 0.95rem;
}

.flash--error {
  color: #ff8f8f;
}

.hp {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
}