/* ===========================
   Konno Kyoko - Official Website
   Style Sheet
   =========================== */

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

:root {
  --color-primary: #0C314B;
  --color-primary-light: #1a4a6e;
  --color-bg: #FFFFFF;
  --color-bg-light: #F7F7F7;
  --color-text: #0C314B;
  --color-text-light: #5A6872;
  --color-border: #CED6DB;
  --font-main: "Albert Sans", "Noto Sans JP", sans-serif;
  --max-width: 1100px;
  --content-width: 720px;
}

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

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
  position: relative;
  overflow-x: hidden;
}

/* --- Scattered Background Decoration --- */
.bg-deco {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.bg-deco-item {
  position: absolute;
  background: url('../images/logo.png') no-repeat center / contain;
  opacity: 0.04;
}

.bg-deco-item:nth-child(1) {
  width: 320px; height: 320px;
  top: -40px; right: -60px;
  transform: rotate(15deg);
  opacity: 0.70;
}

.bg-deco-item:nth-child(2) {
  width: 180px; height: 180px;
  top: 28%; left: -30px;
  transform: rotate(-25deg);
  opacity: 0.65;
}

.bg-deco-item:nth-child(3) {
  width: 240px; height: 240px;
  top: 18%; right: 8%;
  transform: rotate(40deg);
  opacity: 0.60;
}

.bg-deco-item:nth-child(4) {
  width: 140px; height: 140px;
  top: 45%; left: 5%;
  transform: rotate(70deg);
  opacity: 0.70;
}

.bg-deco-item:nth-child(5) {
  width: 280px; height: 280px;
  top: 55%; right: -50px;
  transform: rotate(-15deg);
  opacity: 0.65;
}

.bg-deco-item:nth-child(6) {
  width: 160px; height: 160px;
  top: 72%; left: 12%;
  transform: rotate(50deg);
  opacity: 0.60;
}

.bg-deco-item:nth-child(7) {
  width: 200px; height: 200px;
  top: 85%; right: 15%;
  transform: rotate(-35deg);
  opacity: 0.70;
}

.bg-deco-item:nth-child(8) {
  width: 120px; height: 120px;
  top: 10%; left: 15%;
  transform: rotate(100deg);
  opacity: 0.55;
}

.bg-deco-item:nth-child(9) {
  width: 260px; height: 260px;
  bottom: -40px; left: -40px;
  transform: rotate(20deg);
  opacity: 0.70;
}

/* Content above decoration */
.site-header,
.hero,
.section,
.page-header,
.site-footer {
  position: relative;
  z-index: 1;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: opacity 0.3s ease;
}

a:hover {
  opacity: 0.7;
}

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

ul {
  list-style: none;
}

/* --- Header --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(8px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
}

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

.site-logo a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-main);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.site-logo .logo-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.site-logo .logo-sub {
  display: block;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-text-light);
  margin-top: 1px;
}

/* --- Navigation --- */
.nav-list {
  display: flex;
  gap: 28px;
}

.nav-list a {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Hero (Top Image) --- */
.hero {
  margin-top: 72px;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding: 32px 24px 0;
}

.hero-image {
  width: 100%;
  border-radius: 8px;
  object-fit: contain;
}

/* --- Instagram Stream --- */
.insta-stream {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 20px 24px 0;
}

.insta-stream-inner {
  overflow: hidden;
}

.insta-stream-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.insta-stream-icon {
  width: 18px;
  height: 18px;
  fill: var(--color-primary);
}

.insta-stream-handle {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

.insta-stream-track {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: 4px;
}

.insta-stream-track::-webkit-scrollbar {
  display: none;
}

.insta-stream-item {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-bg-light);
}

.insta-stream-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.insta-stream-item img:hover {
  transform: scale(1.05);
}

.insta-stream-item.placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #E7EAED;
  color: var(--color-text-light);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
}

/* --- Section Common --- */
.section {
  padding: 48px 24px;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

/* --- News Section --- */
.news-list {
  border-top: 1px solid var(--color-border);
}

.news-item {
  display: flex;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
  align-items: baseline;
}

.news-date {
  color: var(--color-text-light);
  white-space: nowrap;
  min-width: 60px;
  font-size: 0.85rem;
}

.news-text a {
  color: var(--color-primary);
}

/* --- 3-Column Cards --- */
.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card-image {
  border-radius: 8px;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  object-position: center 15%;
}

.card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.04em;
}

.card-text {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.card-btn {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 28px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-align: center;
  transition: background 0.3s ease;
  align-self: flex-start;
}

.card-btn:hover {
  background: var(--color-primary-light);
  opacity: 1;
}

/* --- Page Header (sub pages) --- */
.page-header {
  margin-top: 72px;
  padding: 48px 24px;
  text-align: center;
}

.page-header-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.08em;
}

/* --- Biography Page --- */
.bio-content {
  max-width: var(--content-width);
  margin: 0 auto;
}

.bio-photo {
  width: 280px;
  border-radius: 8px;
  float: right;
  margin: 0 0 24px 32px;
}

.bio-text {
  font-size: 0.92rem;
  line-height: 2;
  color: var(--color-text);
}

.bio-text p {
  margin-bottom: 1.4em;
}

.bio-section-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
  margin: 32px 0 12px;
  letter-spacing: 0.04em;
}

/* --- Schedule Page --- */
.schedule-content {
  max-width: var(--content-width);
  margin: 0 auto;
}

.schedule-note {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 32px;
  text-align: center;
}

.schedule-item {
  padding: 28px 0;
  border-bottom: 1px solid var(--color-border);
}

.schedule-item-title {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.schedule-item-role {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}

.schedule-item-detail {
  font-size: 0.88rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.schedule-item-image {
  margin-top: 16px;
  max-width: 360px;
  border-radius: 8px;
}

/* --- Contact Page --- */
.contact-content {
  max-width: var(--content-width);
  margin: 0 auto;
}

.contact-intro {
  text-align: center;
  margin-bottom: 40px;
  font-size: 0.92rem;
  color: var(--color-text-light);
  line-height: 1.9;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
}

.form-group label .required {
  color: #c0392b;
  font-size: 0.75rem;
  margin-left: 4px;
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-family: var(--font-main);
  font-size: 0.92rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group textarea {
  min-height: 180px;
  resize: vertical;
}

.form-submit {
  display: inline-block;
  padding: 12px 40px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  font-family: var(--font-main);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.3s ease;
  align-self: center;
}

.form-submit:hover {
  background: var(--color-primary-light);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.8);
  padding: 40px 24px;
  text-align: center;
}

.footer-copy {
  font-size: 0.8rem;
  margin-bottom: 24px;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}

.footer-nav a:hover {
  color: #fff;
  opacity: 1;
}

.footer-social {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 0.8rem;
  transition: background 0.3s ease;
}

.footer-social a:hover {
  background: rgba(255, 255, 255, 0.3);
  opacity: 1;
}

.footer-social svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(8px);
    padding: 24px;
    transform: translateY(-100%);
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
    border-bottom: 1px solid var(--color-border);
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    gap: 18px;
    text-align: center;
  }

  .hero {
    padding: 16px 16px 0;
  }

  .section {
    padding: 36px 16px;
  }

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

  .news-item {
    flex-direction: column;
    gap: 2px;
  }

  .bio-photo {
    float: none;
    width: 100%;
    max-width: 300px;
    margin: 0 auto 24px;
  }

  .page-header {
    padding: 32px 16px;
  }

  .page-header-title {
    font-size: 1.3rem;
  }
}