/* Typography & Readability Enhancements */
/* This file contains improved typography for better readability across the entire application */

/* ==========================================================================
   ROOT VARIABLES FOR CONSISTENT TYPOGRAPHY SYSTEM
   ========================================================================== */

:root {
  /* Typography Scale - Major Third (1.25) */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */
  --text-5xl: 3rem;       /* 48px */
  --text-6xl: 3.75rem;    /* 60px */
  
  /* Line Heights for Better Readability */
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;
  
  /* Enhanced Color System for Better Contrast */
  --text-primary: #1a202c;      /* WCAG AA compliant - 4.5:1 ratio */
  --text-secondary: #2d3748;    /* Strong readable text */
  --text-muted: #4a5568;        /* Subtle text, still readable */
  --text-light: #718096;        /* Light text for less emphasis */
  --text-accent: #e67e22;       /* Batak orange, high contrast */
  
  /* Dark Theme Text Colors */
  --text-primary-dark: #f7fafc;
  --text-secondary-dark: #edf2f7;
  --text-muted-dark: #cbd5e0;
  --text-light-dark: #a0aec0;
}

/* ==========================================================================
   ENHANCED BASE TYPOGRAPHY
   ========================================================================== */

/* Improved Body Text */
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--text-primary);
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ==========================================================================
   HEADING IMPROVEMENTS
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--text-primary);
  margin-bottom: 0.5em;
  letter-spacing: -0.025em;
}

h1 {
  font-size: var(--text-5xl);
  line-height: var(--leading-tight);
  margin-bottom: 1rem;
}

h2 {
  font-size: var(--text-4xl);
  line-height: var(--leading-tight);
  margin-bottom: 0.875rem;
}

h3 {
  font-size: var(--text-3xl);
  line-height: var(--leading-snug);
  margin-bottom: 0.75rem;
}

h4 {
  font-size: var(--text-2xl);
  line-height: var(--leading-snug);
  margin-bottom: 0.625rem;
}

h5 {
  font-size: var(--text-xl);
  line-height: var(--leading-normal);
  margin-bottom: 0.5rem;
}

h6 {
  font-size: var(--text-lg);
  line-height: var(--leading-normal);
  margin-bottom: 0.5rem;
}

/* ==========================================================================
   PARAGRAPH & TEXT IMPROVEMENTS
   ========================================================================== */

p {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
  margin-bottom: 1rem;
  max-width: 70ch; /* Optimal reading width */
}

/* Enhanced paragraph variants */
.text-large {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
}

.text-small {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

.text-muted {
  color: var(--text-muted);
}

.text-light {
  color: var(--text-light);
}

/* ==========================================================================
   BATAK SCRIPT TYPOGRAPHY
   ========================================================================== */

.batak-text, .batak-char, .batak-script, .batak-char-large {
  font-family: 'Noto Sans Batak', serif;
  font-weight: 400;
  text-rendering: optimizeLegibility;
  -webkit-font-feature-settings: "liga" on, "kern" on;
  font-feature-settings: "liga" on, "kern" on;
}

.batak-char-large {
  font-size: var(--text-6xl);
  line-height: 1;
  font-weight: 700;
}

.batak-script-large {
  font-size: var(--text-4xl);
  line-height: var(--leading-tight);
}

.batak-text {
  font-size: var(--text-2xl);
  line-height: var(--leading-normal);
}

.batak-char {
  font-size: var(--text-xl);
  line-height: 1;
}

/* ==========================================================================
   SECTION SPECIFIC IMPROVEMENTS
   ========================================================================== */

/* Section Headers */
.section-title {
  font-size: var(--text-4xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  color: var(--text-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.025em;
}

.section-description {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 60ch;
  margin-left: auto;
  margin-right: auto;
}

.content-subtitle {
  font-size: var(--text-3xl);
  font-weight: 600;
  line-height: var(--leading-snug);
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

/* ==========================================================================
   INTERACTIVE ELEMENTS TEXT
   ========================================================================== */

/* Button Text */
button, .button {
  font-family: 'Inter', sans-serif;
  font-weight: 600;
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  letter-spacing: 0.025em;
}

/* Form Labels */
label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  line-height: var(--leading-normal);
  margin-bottom: 0.5rem;
  display: block;
}

/* Input Text */
input, select, textarea {
  font-family: 'Inter', sans-serif;
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
}

/* ==========================================================================
   CARD & COMPONENT TEXT IMPROVEMENTS
   ========================================================================== */

/* Path Card Typography */
.path-title {
  font-size: var(--text-2xl);
  font-weight: 700;
  line-height: var(--leading-snug);
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.path-subtitle {
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: var(--leading-normal);
  color: var(--text-accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.path-desc {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* Feature Item Text */
.feature-item {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--text-secondary);
}

/* Progress Text */
.progress-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.progress-count {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.stat {
  font-size: var(--text-xs);
  color: var(--text-light);
  line-height: var(--leading-normal);
}

/* ==========================================================================
   WRITING PRACTICE SECTION
   ========================================================================== */

.reference-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.latin-char {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-muted);
  font-family: 'Inter', sans-serif;
}

.hint-text {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--text-light);
}

/* ==========================================================================
   QUIZ SECTION
   ========================================================================== */

.quiz-type-card h4 {
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: var(--leading-snug);
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.quiz-type-card p {
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.question-text {
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: var(--leading-snug);
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

/* ==========================================================================
   ACHIEVEMENT SECTION
   ========================================================================== */

.achievement-title {
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: var(--leading-snug);
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.achievement-desc {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--text-muted);
}

/* ==========================================================================
   DARK THEME ADJUSTMENTS
   ========================================================================== */

[data-theme="dark"] {
  --text-primary: var(--text-primary-dark);
  --text-secondary: var(--text-secondary-dark);
  --text-muted: var(--text-muted-dark);
  --text-light: var(--text-light-dark);
}

[data-theme="dark"] body {
  color: var(--text-primary-dark);
}

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] h4,
[data-theme="dark"] h5,
[data-theme="dark"] h6 {
  color: var(--text-primary-dark);
}

[data-theme="dark"] p {
  color: var(--text-secondary-dark);
}

[data-theme="dark"] .text-muted {
  color: var(--text-muted-dark);
}

[data-theme="dark"] .text-light {
  color: var(--text-light-dark);
}

/* ==========================================================================
   RESPONSIVE TYPOGRAPHY
   ========================================================================== */

/* Tablet Adjustments */
@media (max-width: 768px) {
  :root {
    --text-5xl: 2.5rem;    /* Smaller on tablets */
    --text-4xl: 2rem;
    --text-3xl: 1.5rem;
  }
  
  .section-description {
    font-size: var(--text-base);
    max-width: none;
  }
  
  p {
    max-width: none;
  }
}

/* Mobile Adjustments */
@media (max-width: 480px) {
  :root {
    --text-5xl: 2rem;      /* Even smaller on mobile */
    --text-4xl: 1.75rem;
    --text-3xl: 1.375rem;
    --text-2xl: 1.25rem;
  }
  
  body {
    font-size: var(--text-base);
    line-height: var(--leading-relaxed);
  }
  
  .batak-char-large {
    font-size: var(--text-4xl);
  }
  
  .batak-script-large {
    font-size: var(--text-3xl);
  }
}

/* ==========================================================================
   ACCESSIBILITY IMPROVEMENTS
   ========================================================================== */

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --text-primary: #000000;
    --text-secondary: #1a1a1a;
    --text-muted: #333333;
  }
  
  [data-theme="dark"] {
    --text-primary: #ffffff;
    --text-secondary: #f0f0f0;
    --text-muted: #cccccc;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

/* Focus Visible for Better Keyboard Navigation */
*:focus-visible {
  outline: 2px solid var(--text-accent);
  outline-offset: 2px;
}