/* ======================
   カレラピアノの会 - スタイル
   JIMDOサイトのデザインを再現
   ====================== */

:root {
  --color-text: #fff;
  --color-text-dark: #333;
  --color-accent: #7cb8d9;
  --color-link: #aad4ec;
  --color-border: rgba(255, 255, 255, 0.2);
  --color-white: #fff;
  --font-body: "Noto Sans JP", "Helvetica Neue", Arial, sans-serif;
  --font-heading: "Noto Serif JP", Georgia, serif;
  --max-width: 780px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  line-height: 1.8;
  font-size: 16px;
  background: #1a1510 url("../img/background.jpg") no-repeat center center fixed;
  background-size: cover;
  min-height: 100vh;
}

a {
  color: var(--color-link);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* --- Header / Nav --- */

header {
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.8rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.site-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: var(--color-white);
  font-weight: 700;
}
.site-title a {
  color: inherit;
}
.site-title a:hover {
  text-decoration: none;
}

.site-subtitle {
  font-size: 0.7rem;
  color: rgba(255, 255, 255, 0.6);
  display: block;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

nav a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.85rem;
  transition: color 0.2s;
}
nav a:hover,
nav a.active {
  color: var(--color-white);
  text-decoration: none;
}

/* --- Language switcher --- */

.lang-switch {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
}
.lang-switch a {
  color: rgba(255, 255, 255, 0.5);
}
.lang-switch a:hover,
.lang-switch .current {
  color: var(--color-white);
}

/* --- Main content --- */

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* --- Hero / Logo (top page) --- */

.hero {
  text-align: center;
  padding: 3rem 0 2rem;
  margin-bottom: 1.5rem;
}

.hero .logo {
  max-width: 400px;
  width: 80%;
  margin-bottom: 1rem;
}

.hero .subtitle {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
}

/* --- Decorative bar image --- */

.deco-bar {
  width: 100%;
  max-width: var(--max-width);
  display: block;
  margin: 2rem auto;
  border-radius: 4px;
}

/* --- Sections --- */

section {
  margin-bottom: 3rem;
}

h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-white);
}

h3 {
  font-size: 1.05rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--color-accent);
}

p {
  margin-bottom: 1rem;
  color: rgba(255, 255, 255, 0.9);
}

/* --- Card grid (top page) --- */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.card {
  text-align: center;
  padding: 1.5rem 1rem;
  transition: transform 0.2s;
}
.card:hover {
  transform: translateY(-2px);
}

.card .icon {
  width: 64px;
  height: 64px;
  margin-bottom: 0.8rem;
}

.card h3 {
  margin-top: 0;
  color: var(--color-white);
  font-size: 1rem;
}

.card p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

.card a.card-link {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-accent);
}

/* --- Event info box --- */

.event-box {
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  background: rgba(0, 0, 0, 0.3);
}

.event-box h2 {
  border-bottom: none;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
  font-size: 1.2rem;
}

.event-box .date {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
  color: var(--color-white);
}

.event-box .venue {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 1rem;
}

.event-box .note {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

/* --- Concert history table --- */

.concert-list {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.concert-list th,
.concert-list td {
  padding: 0.6rem 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.concert-list th {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
  font-weight: normal;
}

.concert-list td {
  color: rgba(255, 255, 255, 0.85);
}

/* --- About page --- */

.info-grid {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 0.3rem 1.5rem;
  margin: 1rem 0;
}

.info-grid dt {
  font-weight: 700;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

.info-grid dd {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.9);
}

/* --- Contact form --- */

.contact-form {
  max-width: 500px;
}

.contact-form label {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 0.3rem;
  margin-top: 1rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.8);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.contact-form textarea {
  height: 150px;
  resize: vertical;
}

.contact-form button {
  margin-top: 1.2rem;
  padding: 0.7rem 2rem;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 0.95rem;
  cursor: pointer;
  transition: opacity 0.2s;
}
.contact-form button:hover {
  opacity: 0.85;
}

/* --- PDF links --- */

.pdf-link {
  font-size: 0.85rem;
  color: var(--color-accent);
}

/* --- Program lists --- */

.program {
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

.program h4 {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  margin: 1rem 0 0.3rem;
  font-weight: 700;
}

.program ul {
  list-style: none;
  padding: 0;
}

.program li {
  padding: 0.2rem 0;
  color: rgba(255, 255, 255, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* --- details/summary --- */

details {
  margin-top: 0.5rem;
}

summary {
  cursor: pointer;
  color: var(--color-accent);
  font-size: 0.9rem;
}

/* --- Footer --- */

footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

footer nav {
  margin-bottom: 0.5rem;
}
footer nav ul {
  justify-content: center;
  gap: 1rem;
}
footer nav a {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
}
footer nav a:hover {
  color: rgba(255, 255, 255, 0.8);
}

/* --- Responsive --- */

@media (max-width: 600px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  nav ul {
    gap: 1rem;
  }
  .hero .logo {
    max-width: 280px;
  }
  .info-grid {
    grid-template-columns: 1fr;
  }
  .concert-list th:nth-child(3),
  .concert-list td:nth-child(3) {
    display: none;
  }
}