@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-400.ttf') format('truetype');
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-500.ttf') format('truetype');
  font-style: normal;
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-600.ttf') format('truetype');
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: 'Inter';
  src: url('/fonts/inter-700.ttf') format('truetype');
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: 'Lora';
  src: url('/fonts/lora-400.ttf') format('truetype');
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Lora';
  src: url('/fonts/lora-400-italic.ttf') format('truetype');
  font-style: italic;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Lora';
  src: url('/fonts/lora-600.ttf') format('truetype');
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: 'Lora';
  src: url('/fonts/lora-700.ttf') format('truetype');
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: 'Noto Serif Bengali';
  src: url('/fonts/noto-serif-bengali-400.ttf') format('truetype');
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Noto Serif Bengali';
  src: url('/fonts/noto-serif-bengali-600.ttf') format('truetype');
  font-style: normal;
  font-weight: 600;
  font-display: swap;
}

/* ============================================================
   DESIGN TOKENS — BritishBangladeshis.org
   Inspired by Bangladesh national colours + British editorial
   ============================================================ */

:root {
  /* Brand */
  --color-primary:         #006A4E;
  --color-primary-dark:    #004F3A;
  --color-primary-light:   #E6F2EE;
  --color-accent:          #F42A41;
  --color-accent-dark:     #C8102E;
  --color-accent-light:    #FEE8EB;

  /* Surfaces */
  --color-bg:              #FAF7F2;
  --color-surface:         #FFFFFF;
  --color-surface-warm:    #F5EFE8;
  --color-border:          #E2D5C8;
  --color-border-light:    #EDE7DF;

  /* Text */
  --color-text:            #1A1A1A;
  --color-text-secondary:  #4A4A4A;
  --color-text-muted:      #767676;
  --color-text-inverse:    #FFFFFF;

  /* Elevation */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.06);
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
  --shadow-lg:  0 10px 15px rgba(0,0,0,0.08), 0 4px 6px rgba(0,0,0,0.05);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* Type scale */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 64px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: var(--text-base);
  line-height: 1.7;
  min-height: 100vh;
}

/* Bengali text */
[lang="bn"], .bn {
  font-family: 'Noto Serif Bengali', 'Noto Sans Bengali', serif;
  line-height: 1.9;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Lora', 'Playfair Display', Georgia, serif;
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl)); }
h2 { font-size: clamp(var(--text-2xl), 3vw, var(--text-4xl)); }
h3 { font-size: clamp(var(--text-xl), 2.5vw, var(--text-3xl)); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p { max-width: 70ch; }

a {
  color: var(--color-primary);
  text-decoration-color: transparent;
  text-underline-offset: 3px;
  transition: color 0.2s, text-decoration-color 0.2s;
}
a:hover { color: var(--color-accent); text-decoration-color: currentColor; }

img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* Focus visible */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

@media (max-width: 640px) {
  .container { padding-inline: var(--space-4); }
}

.visually-hidden {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.625rem 1.375rem;
  min-height: 44px;
  font-family: 'Inter', system-ui, sans-serif;
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color 0.2s, color 0.2s, border-color 0.2s, transform 0.15s, box-shadow 0.2s;
  white-space: nowrap;
}

.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-primary);
}
.btn-primary:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
  text-decoration-color: transparent;
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  border-color: var(--color-accent);
}
.btn-accent:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: var(--color-text-inverse);
  text-decoration-color: transparent;
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  text-decoration-color: transparent;
}

.btn-white {
  background-color: #fff;
  color: var(--color-primary);
  border-color: #fff;
}
.btn-white:hover {
  background-color: rgba(255,255,255,0.9);
  color: var(--color-primary);
  text-decoration-color: transparent;
}

/* ============================================================
   CARDS
   ============================================================ */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }

/* ============================================================
   SECTION DIVIDER (flag red circle motif)
   ============================================================ */

.section-divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-block: var(--space-16);
}
.section-divider::before,
.section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--color-border);
}
.section-divider-circle {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

/* ============================================================
   SECTION HEADINGS
   ============================================================ */

.section-label {
  display: inline-block;
  font-family: 'Inter', sans-serif;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}

.section-title {
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 60ch;
}

/* ============================================================
   FORM ELEMENTS
   ============================================================ */

.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-secondary);
}

.form-input,
.form-textarea {
  padding: 0.625rem 0.875rem;
  font-family: inherit;
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 106, 78, 0.15);
}

.form-textarea { resize: vertical; min-height: 140px; }