style.css

/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html,
body {
  height: 100%;
  font-family: 'Segoe UI', Roboto, sans-serif;
  background-color: #dae4f1;
  color: #1f2937;
  display: flex;
  flex-direction: column;
}

/* Header */
.header {
  background-color: #00008B;
  color: #e8dfdf;
  padding: 1rem 0;
  border-bottom: 1px solid #e5e7eb;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
}

.container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1100px;
  margin: auto;
  padding: 0 1.5rem;
}

.logo {
  font-size: 1.75rem;
  font-weight: 700;
  color: #f4f5f7;
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav a {
  text-decoration: none;
  color: #7caaee;
  font-weight: 500;
  font-size: 1rem;
  transition: color 0.2s;
}

.nav a:hover {
  color: #304278;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: 4rem 1rem 2rem;
  background-color: #ffffff;
  border-radius: 0 0 1rem 1rem;
  margin-bottom: 2rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
}

.hero h2 {
  font-size: 2.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #111827;
}

.hero p {
  font-size: 1.125rem;
  color: #6b7280;
  max-width: 600px;
  margin: 0 auto 2rem;
}

.cta-button {
  display: inline-block;
  background-color: #2563eb;
  color: #ffffff;
  padding: 0.75rem 2rem;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.3s, transform 0.3s;
}

.cta-button:hover {
  background-color: #000088;
  transform: scale(1.09);
}

/* Subjects Section */
.subjects {
  padding: 3rem 1rem;
  max-width: 1100px;
  margin: auto;
}

.subjects h3 {
  text-align: center;
  font-size: 2.5rem;
  font-weight: 600;
  margin-bottom: 2rem;
  color: #111827;
}

.subject-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.6rem;
}

.subject-card {
  background-color: #ffffff;
  padding: 1.5rem;
  border-radius: 0.75rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
  text-decoration: none;
  color: #0a0c12;
  font-size: 1.2rem;
  font-weight: 500;
  text-align: center;
  transition: box-shadow 0.2s, transform 0.2s;
}

.subject-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transform: translateY(-3px);
}

/* --- NEW LAYOUT: Vertical List (Like Image 2) --- */
/* This does not affect .subject-grid */

.vertical-stack {
  display: flex;
  flex-direction: column; /* Stacks items vertically */
  align-items: center;    /* Centers them in the middle */
  gap: 1.2rem;            /* Space between bars */
  margin-top: 1rem;
}

/* We make the card wider when it is inside a vertical stack */
.vertical-stack .subject-card {
  width: 100%;
  max-width: 700px;       /* Makes it look like a wide bar, not a small box */
  padding: 1.2rem;
}

.unit-year {
  font-size: 0.85rem; font-style: italic; color: #7373c5; margin-left: 0.5rem;
}

 /* Show-less button style (non-invasive, matches current simple UI) */
.hl-show-less {
    display: inline-block;
    margin: 1.2rem auto 0;
    padding: 0.5rem 0.9rem;
    font-size: 0.95rem;
    font-weight: 600;
    background: #ffffff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 1px 2px rgba(0,0,0,0.03);
    transition: transform .08s ease, box-shadow .08s ease;
    color: #333;
}
.hl-show-less:hover { transform: translateY(-1px); box-shadow: 0 4px 10px rgba(0,0,0,0.06); }
/* Make sure the button sits nicely inside the details content */
details > .hl-show-less { display: none; } /* hidden by default; shown when details.open */
details[open] > .hl-show-less { display: inline-block; }
/* Make it full-width on narrow screens */
@media (max-width: 520px) {
    .hl-show-less { width: calc(100% - 2rem); display: block; text-align:center; }
}
/* Footer */
.footer {
  background-color: #00008B;
  color: #ebeef6;
  text-align: center;
  padding: 1rem;
  margin-top: auto;
  font-size: 0.95rem;
  border-top: 1px solid #1c1d1d;
}

.footer {
  text-align: center;
  padding: 10px;
}

.footer .disclaimer {
  font-size: 0.8em;
  /* smaller than normal text */
  color: #666;
  /* lighter color for subtle look */
  margin-top: 5px;
}

/* Responsive */
@media (max-width: 640px) {
  .container {
    flex-direction: column;
    gap: 1rem;
    padding: 0 1rem;
  }

  .nav a {
    margin-left: 1rem;
    font-size: 0.95rem;
  }

  .hero {
    padding: 3rem 1rem 1.5rem;
  }

  .subjects {
    padding: 2rem 1rem;
  }

  .subjects p {
    font-size: 0.8rem;
  }
}

.questions-list {
  max-width: 800px;
  margin: auto;
  padding: 2rem;
  font-family: 'Segoe UI', sans-serif;
}

.question {
  background: #f0f4f8;
  border-left: 4px solid #2563eb;
  margin: 1rem 0;
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.05);
}

.question summary {
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 600;
  color: #1f2937;
}

.question summary::marker {
  font-size: 1.4rem;
}

.question p {
  padding: 0.5rem 0 0 1rem;
  margin: 0;
  color: #374151;
}

/* Blinking cursor effect */
.cursor {
  display: inline-block;
  width: 10px;
  background-color: #333;
  animation: blink 1s infinite;
  margin-left: 2px;
}

@keyframes blink {
  0%,
  100% {
    background-color: #333;
  }
  50% {
    background-color: transparent;
  }
}

.subject-card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.subject-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.hero-image {
  max-width: 400px;
  margin-top: 2rem;
  animation: float 4s ease-in-out infinite;
}

.ans-img {
  max-width: 100%;
  /* never overflow question box */
  height: auto;
  /* keep aspect ratio */
  display: block;
  margin: 0.5rem auto;
  /* center images with spacing */
  border-radius: 6px;
  /* (optional) smooth corners */
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  /* (optional) subtle shadow */
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* Enhanced styles for better math and answer display */
.questions-list {
  max-width: 920px;
  margin: 1.5rem auto;
  padding: 0 1rem;
}

.question {
  margin-bottom: 1.25rem;
}

.sub-question p {
  margin: 0 0 0.5rem 0;
}

.answer-box {
  display: none;
  margin-top: 1rem;
  padding: 1.5rem;
  border-radius: 12px;
  border: 1px solid rgba(15, 23, 42, 0.1);
  background: #fefefe;
  box-shadow: 0 2px 8px rgba(2, 6, 23, 0.06);
  line-height: 1.7;
  word-break: break-word;
  font-size: 16px;
  max-width: 100%; /* Ensure answer box fits within container */
  width: 100%; /* Full width on small screens */
  overflow-x: auto; /* Prevent horizontal overflow */
}

/* Better math formatting in answers */
.answer-box .mjx-chtml {
  font-size: 1.1em !important;
}

.answer-box h1,
.answer-box h2,
.answer-box h3,
.answer-box h4 {
  color: #1e40af;
  margin: 1.5rem 0 1rem 0;
  font-weight: 600;
}

.answer-box h1 {
  font-size: 1.4em;
}

.answer-box h2 {
  font-size: 1.3em;
}

.answer-box h3 {
  font-size: 1.2em;
}

.answer-box h4 {
  font-size: 1.1em;
}

.answer-box p {
  margin-bottom: 1rem;
  text-align: justify;
}

.answer-box ul,
.answer-box ol {
  margin: 1rem 0;
  padding-left: 1.5rem;
}

.answer-box li {
  margin-bottom: 0.5rem;
}

.answer-box strong {
  color: #1f2937;
  font-weight: 600;
}

.answer-box code {
  background: #f3f4f6;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
}

.answer-box pre {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
  margin: 1rem 0;
}

/* Step-by-step solution styling */
.answer-box .step {
  background: #f0f9ff;
  border-left: 4px solid #2563eb;
  padding: 1rem;
  margin: 1rem 0;
  border-radius: 0 8px 8px 0;
}

.controls {
  margin-top: 0.75rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  cursor: pointer;
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: #f9fafb;
  transition: all 0.2s;
  margin: 0.5rem;
}

.btn:hover {
  background: #f3f4f6;
  transform: translateY(-1px);
}

.btn.primary {
  background: #2563eb;
  color: white;
  border: none;
}

.btn.primary:hover {
  background: #000088;
}

.btn.ghost {
  background: transparent;
}

.spinner {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid rgba(0, 0, 0, 0.15);
  border-top-color: rgba(0, 0, 0, 0.6);
  animation: spin 0.8s linear infinite;
  display: inline-block;
  vertical-align: middle;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.cursor {
  display: inline-block;
  width: 8px;
  background: #111827;
  margin-left: 2px;
  height: 1.05em;
  vertical-align: text-bottom;
  animation: blink 1s steps(2, start) infinite;
}

@keyframes blink {
  50% {
    opacity: 0
  }
}

.badge {
  font-size: 12px;
  padding: 4px 8px;
  border-radius: 999px;
  background: #eef2ff;
  color: #4338ca;
}

.badge.cached {
  background: #dcfce7;
  color: #15803d;
}

.source {
  font-size: 12px;
  color: #6b7280;
}

.answer-controls {
  margin-top: 1rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding-top: 1rem;
  border-top: 1px solid #e5e7eb;
}

/* Enhanced responsive design */
@media (max-width: 600px) {
  .answer-box {
    font-size: 15px;
    padding: 1rem;
    max-width: 100%; /* Ensure full width */
    width: 100%; /* Force full width */
    margin-left: 0;
    margin-right: 0;
    overflow-y: auto; /* Allow vertical scrolling if content exceeds height */
    max-height: 70vh; /* Limit height to 70% of viewport height */
  }

  .answer-box .mjx-chtml {
    font-size: 1em !important;
  }

  .header {
    padding: 0.75rem 0;
  }

  .footer {
    padding: 0.5rem;
    font-size: 0.85rem;
  }

  .questions-list {
    padding: 0.5rem;
    max-width: 100%;
  }

  .question {
    padding: 0.75rem;
  }
}

/* Loading animation for better UX */
.generating {
  position: relative;
}

.generating::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, #0ea5e9, transparent);
  animation: loading 1.5s infinite;
}

@keyframes loading {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}
/* Utility */
    .section-container {
        max-width: 1100px;
        margin: 0 auto;
        padding: 0 1.5rem;
        display: block; 
    }
    /* Inverse Button (White Outline for Dark Backgrounds) */
    .cta-button.inverse {
        background-color: transparent;
        color: #ffffff;
        border: 2px solid rgba(255,255,255,0.7);
        margin-top: 2rem;
    }
    .cta-button.inverse:hover {
        background-color: #ffffff;
        color: #050589;
        border-color: #ffffff;
        transform: scale(1.05);
    }

    .hero-sub {
        font-size: 1.15rem;
        margin-bottom: 2.5rem;
        max-width: 700px;
        margin-left: auto;
        margin-right: auto;
        line-height: 1.6;
    }

    .hero-image {
        max-width: 100%;
        height: auto;
        width: 380px; 
        margin: 0 auto 2rem auto;
        display: block;
    }

    .btn-group {
        display: flex;
        gap: 1rem;
        justify-content: center;
        flex-wrap: wrap;
        margin-bottom: 3rem;
    }

    /* --- STATS GRID --- */
    .stats-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
        gap: 2rem;
        max-width: 900px;
        margin: 0 auto;
        padding-top: 2rem;
        border-top: 1px solid #e5e7eb;
    }

    .stat-item h4 {
        font-size: 2rem;
        color: #00008B;
        font-weight: 800;
        margin-bottom: 0.5rem;
    }

    .stat-item p {
        font-size: 0.9rem;
        color: #6b7280;
        font-weight: 500;
        margin: 0;
    }

    /* --- FEATURES SECTION --- */
    .features-section {
        background-color: #f8fafc;
        padding: 5rem 0;
        text-align: center;
    }
    
    .features-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 2rem;
        margin-top: 3rem;
    }

    .feature-card {
        background: white;
        padding: 2.5rem 2rem;
        border-radius: 16px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.02), 0 10px 15px rgba(0,0,0,0.03);
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        border-top: 5px solid #2563eb;
        text-align: left; 
    }

    .feature-card:hover {
        transform: translateY(-8px);
        box-shadow: 0 15px 30px rgba(0,0,0,0.08);
    }

    .feature-icon {
        font-size: 2.5rem;
        margin-bottom: 1.2rem;
        display: inline-block;
    }
    
    /* SVG Styling */
    .feature-icon svg {
        width: 3rem;   
        height: 3rem;
        color: #00008B;
        display: block;
    }

    .feature-card h3 {
        margin-bottom: 0.8rem;
        color: #1f2937;
        font-size: 1.25rem;
        font-weight: 700;
    }

    .feature-card p {
        color: #6b7280;
        font-size: 0.95rem;
        line-height: 1.6;
    }

    /* --- VISION SECTION --- */
    .vision-section {
        background: #050589;
        color: white;
        padding: 5rem 1.5rem;
        text-align: center;
    }

    .vision-content {
        max-width: 800px;
        margin: 0 auto;
    }

    .vision-title {
        font-size: 2.2rem;
        margin-bottom: 1.5rem;
        font-weight: 700;
        letter-spacing: -0.5px;
    }

    .vision-text {
        font-size: 1.15rem;
        line-height: 1.8;
        opacity: 0.95;
        font-style: italic;
        font-weight: 300;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
        .hero-sub { font-size: 1rem; }
        .vision-title { font-size: 1.8rem; }
        .stats-container { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
    }
.scroll-x {
            overflow-x: auto;
            max-width: 100%;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 8px; /* Adds a bit of space so the scrollbar doesn't clip content */
        }