:root {
  --bg-color: #ffffff;
  --light-shadow: #ffffff;
  --dark-shadow: #bebebe;
  --text-color: #333;
  --accent: #31C5F4;

  /* Base font size */
  font-size: 16px; /* 1rem = 16px */

  /* Shadows */
  --dark-shadow: rgba(0, 0, 0, 0.1);
  --light-shadow: rgba(255, 255, 255, 0.7);

  /* Standard font scale using a 1.2 ratio (minor third) */
  --font-2xs: 0.625rem;   /* 10px */
  --font-xs:  0.75rem;    /* 12px */
  --font-sm:  0.875rem;   /* 14px */
  --font-base: 1rem;      /* 16px - default body text */
  --font-md:   1.125rem;  /* 18px */
  --font-lg:   1.25rem;   /* 20px */
  --font-xl:   1.5rem;    /* 24px */
  --font-2xl:  1.875rem;  /* 30px */
  --font-3xl:  2.25rem;   /* 36px */
  --font-4xl:  3rem;      /* 48px */

  /* Optional UI sizing vars */
  --radius-sm: 0.5rem;    /* 8px */
  --radius-md: 0.75rem;   /* 12px */
  --radius-lg: 1rem;      /* 16px */
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
}


body {
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
}

.section-wrapper {
  width: 100%;
  padding-left: 16px;
  padding-right: 16px;
  margin-bottom: 40px;
}

.section-nav-wrapper {
  display: flex;
  justify-content: center;
  margin-top: 24px;
}

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



.artist-banner {
  background: linear-gradient(145deg, #e6e6e6, #cacaca);
  padding: 80px 0;
  position: relative;
  text-align: center;
  color: var(--text-color);
  border-radius: 32px;
  box-shadow:
    10px 10px 20px #bebebe,
    -10px -10px 20px #ffffff;
  max-width: 900px;
  margin: 20px auto;
}

.artist-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 32px;
  background: radial-gradient(circle at center, rgba(255 255 255 / 0.35), transparent 70%);
  pointer-events: none;
  z-index: 1;
}

.artist-banner .container {
  position: relative;
  z-index: 2;
}

.artist-avatar {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--bg-color);
  box-shadow:
    inset 6px 6px 8px #d1d1d1,
    inset -6px -6px 8px #ffffff,
    6px 6px 16px #bebebe,
    -6px -6px 16px #ffffff;
  border: none;
  margin: 0 auto 20px;
  transition: box-shadow 0.3s ease;
}

.artist-avatar:hover {
  box-shadow:
    inset 3px 3px 5px #c4c4c4,
    inset -3px -3px 5px #ffffff,
    3px 3px 10px #a3a3a3,
    -3px -3px 10px #ffffff;
}

.artist-name {
  font-size: var(--font-4xl);
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-color);
  letter-spacing: 1.2px;
}

.artist-meta {
  font-size: var(--font-2xl);
  opacity: 0.85;
  color: var(--text-color);
  font-style: italic;
}


.section-nav .btn {
  background: var(--bg-color);
  color: var(--text-color);
  border: none;
  border-radius: 16px;
  box-shadow: 8px 8px 16px var(--dark-shadow),
              -8px -8px 16px var(--light-shadow);
  padding: 18px 36px;       /* Increased padding for bigger buttons */
  font-size: var(--font-2xl);        /* Larger font size */
  transition: all 0.3s ease;
  margin: 0 10px;           /* More spacing between buttons */
  cursor: pointer;
  min-width: 140px;         /* Minimum width to keep consistent size */
  user-select: none;
}

.section-nav .btn:hover {
  box-shadow: inset 6px 6px 12px var(--dark-shadow),
              inset -6px -6px 12px var(--light-shadow);
  color: var(--accent, #0d6efd);
  background: var(--bg-color);
}

.section-nav .btn.active {
  box-shadow: inset 8px 8px 16px var(--dark-shadow),
              inset -8px -8px 16px var(--light-shadow);
  color: var(--accent, #0d6efd);
  font-weight: 700;
  background: var(--bg-color);
}

.artist-section {
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  transition: opacity 0.3s ease, max-height 0.3s ease;
}

.artist-section.active {
  display: block; /* needed for layout */
  opacity: 1;
  max-height: 1000px; /* large enough to fit content */
  overflow: visible;
}


/* Responsive Adjustments */
@media (max-width: 576px) {
  .artist-name {
    font-size: var(--font-lg);
  }

  .artist-meta {
    font-size: var(--font-xs);
  }

  .artist-avatar {
    width: 100px;
    height: 100px;
  }

  .nav-profile img {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    box-shadow: 4px 4px 8px var(--dark-shadow),
                -4px -4px 8px var(--light-shadow);
  }
}

.btn-icon {
  width: 70px;
  height: 70px;
  vertical-align: middle;
  margin-right: 10px;
  filter: grayscale(100%) brightness(0.2);
  transition: filter 0.3s ease;
}

.section-nav .btn:hover .btn-icon,
.section-nav .btn.active .btn-icon {
  filter: none;
}