@charset "UTF-8";

/* Typography */
/* Google Fonts loaded via HTML <link> for performance */

/* Base */
body {
  margin: 0;
  padding: 0;
  background: #000000;
  color: #D0D0D0;
  font-family: 'Inter', sans-serif;
  line-height: 1.45;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 40px 32px;
}

/* Header */
.site-header {
  text-align: center;
  margin-bottom: 10px; /* Logo → H1 spacing */
}

.logo {
  width: 150px;
  min-width: 48px; /* clarity rule */
  height: auto;
  display: inline-block;
}

/* Hero */
.hero {
  text-align: center;
  margin-bottom: 40px;
}

h1 {
  font-family: 'Inter Tight', sans-serif;
  font-size: 32px;
  font-weight: 700;
  margin: 0 0 32px 0; /* H1 → Subline */
  color: #D0D0D0;
}

.subline {
  font-family: 'Inter Tight', sans-serif;
  font-size: 24px;
  font-weight: 600;
  color: #D62828;
  max-width: 800px;
  margin: 0 auto;
}
.subline1 {
  font-family: 'Inter Tight', sans-serif;
  font-size: 20px;
  font-weight: 600;
  color: #D0D0D0;
  max-width: 800px;
  margin: 0 auto;
}

.green {
  color: #4adf6f8b;
}

/* Button Row */
.button-row {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.tab-button {
  width: 180px;
  height: 48px;
  background: transparent;
  border: 1px solid #D62828;
  color: #D62828;
  font-family: 'Inter', sans-serif;
  font-weight: 500;
  font-size: 17px;
  letter-spacing: 0.5px;
  border-radius: 2px;
  cursor: pointer;
  transition: all 120ms linear;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.tab-button .button-icon, .tab-button .button-icon-filter {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex-shrink: 0;
  opacity: 0.9;
  transition: opacity 120ms linear, filter 120ms linear;
}

.tab-button:hover,
.tab-button:focus {
  background: #D62828;
  color: #000000;
  outline: none;
}

.tab-button:hover .button-icon-filter,
.tab-button:focus .button-icon-filter {
  opacity: 1;
  filter: brightness(0);
}
.tab-button:hover .button-icon,
.tab-button:focus .button-icon {
  opacity: 1;
}

.tab-button:active {
  transition: all 80ms linear;
}

/* Section Reveal Container */
.section-reveal {
  max-width: 800px;
  margin: 60px auto 0;
  opacity: 0;
  transition: opacity 200ms linear;
}

.section-reveal.visible {
  opacity: 1;
}

.section-content {
  text-align: left;
}

.section-content p {
  font-size: 16px;
  max-width: 800px;
  margin: 0 0 24px 0;
}

/* Typewriter cursor */
.typewriter-cursor {
  display: inline-block;
  width: 2px;
  height: 1.2em;
  background: #D62828;
  margin-left: 2px;
  vertical-align: baseline;
  animation: blink 1s infinite;
}

@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

/* Hidden section data */
.section-data {
  display: none;
}

/* Links (UI rule) */
a {
  color: #D62828;
  text-decoration: none;
}

a:hover,
a:focus {
  text-decoration: underline;
}

/* Footer */
.footer {
  text-align: center;
  font-size: 14px;
  color: #898989;
  margin-top: 200px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .container {
    padding: 32px 24px;
  }

  .button-row {
    gap: 12px;
    flex-wrap: wrap;
  }

  .tab-button {
    width: calc(50% - 6px);
    min-width: 140px;
    font-size: 16px;
  }

  .tab-button .button-icon {
    width: 20px;
    height: 20px;
  }

  .section-reveal {
    margin-top: 40px;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 24px 16px;
  }

  .logo {
    width: 100px;
  }

  h1 {
    font-size: 28px;
    margin-bottom: 24px;
  }

  .subline {
    font-size: 20px;
  }

  .subline1 {
    font-size: 18px;
  }

  .hero {
    margin-bottom: 32px;
  }

  .button-row {
    gap: 10px;
    margin-bottom: 40px;
  }

  .tab-button {
    width: 100%;
    min-width: unset;
    font-size: 15px;
    height: 44px;
    gap: 8px;
  }

  .tab-button .button-icon {
    width: 18px;
    height: 18px;
  }

  .section-content p {
    font-size: 15px;
    margin-bottom: 20px;
  }

  .section-reveal {
    margin-top: 32px;
  }

  .footer {
    margin-top: 120px;
    font-size: 13px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 24px;
  }

  .subline {
    font-size: 18px;
  }

  .subline1 {
    font-size: 16px;
  }

  .tab-button {
    font-size: 14px;
    height: 40px;
  }

  .section-content p {
    font-size: 14px;
  }
}