/* ===== Global reset / base ===== */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: 'Roboto', sans-serif;
  color: #1E293B;
  background-color: #F9FAFB;
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

h1, h2, h3 {
  font-family: 'Poppins', sans-serif;
  color: #1E293B;
}

/* ===== Header & Navigation ===== */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #f5f5f5;
  padding: 10px 20px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
  font-family: 'Poppins', sans-serif;
  margin: 0;
  font-size: 1.5em;
}

/* Nav list (desktop default) */
nav .nav-links {
  list-style: none;
  display: flex;
  gap: 15px;
  margin: 0;
  padding: 0;
}

/* Nav buttons */
nav .nav-links a.nav-button,
nav .nav-links a.faq-link {
  text-decoration: none;
  color: #fff;
  padding: 8px 14px;
  border-radius: 6px;
  font-family: 'Poppins', sans-serif;
  font-weight: bold;
  transition: background-color 0.2s;
  display: inline-block;
}

nav .nav-links a.nav-button,
nav .nav-links a.faq-link { background-color: #2E7D32; }
nav .nav-links a.nav-button:hover { background-color: #FFB300; }
nav .nav-links a.faq-link:hover { background-color: #45a049; }

/* Hamburger toggle (hidden on desktop) */
.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  color: #2E7D32;
  padding: .5rem;
  line-height: 0;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle svg { width: 28px; height: 28px; display: block; }

/* ===== Forms & buttons (don’t affect the hamburger) ===== */
section { margin-bottom: 30px; }

label { display: block; margin-bottom: 5px; }

/* Limit the 100% width to form controls and non-hamburger buttons */
input, select, button:not(.nav-toggle) {
  width: 100%;
  padding: 8px;
  margin-bottom: 10px;
  box-sizing: border-box;
}

button:not(.nav-toggle) {
  background-color: #2E7D32;
  color: #fff;
  border: none;
  cursor: pointer;
  border-radius: 4px;
}
button:not(.nav-toggle):hover { background-color: #FFB300; }

/* ===== Boxes ===== */
#fundDetails, #results {
  background-color: #fff;
  padding: 15px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
#results p { margin: 5px 0; }

/* ===== Footer ===== */
footer {
  text-align: center;
  font-size: 0.9em;
  color: #666;
  padding: 20px 0;
  margin-top: 40px;
}

/* ===== Images ===== */
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 20px auto;
}

/* ===== Hero ===== */
.hero {
  text-align: center;
  padding: 40px 20px;
  background-color: #F9FAFB;
}
.hero h2 { font-size: 2em; margin-bottom: 10px; }
.hero p { margin-bottom: 20px; font-size: 1.1em; }

.cta-button {
  display: inline-block;
  padding: 10px 20px;
  background-color: #2E7D32;
  color: #fff;
  text-decoration: none;
  border-radius: 4px;
  font-weight: bold;
  transition: background-color 0.2s;
}
.cta-button:hover { background-color: #FFB300; }

/* ===== Why Use This Tool ===== */
.why-use { padding: 30px 20px; background-color: #FFFFFF; }

.features {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  justify-content: space-between;
  margin-top: 20px;
}
.feature {
  flex: 1 1 250px;
  background-color: #F9FAFB;
  padding: 15px;
  border-radius: 6px;
  text-align: center;
}
.feature h3 { margin-bottom: 10px; color: #2E7D32; }
.feature p { margin: 0; }

/* ===== Charts ===== */
.chart-section {
  padding: 30px 20px;
  background-color: #FFFFFF;
  margin-top: 20px;
}
.chart-section canvas { max-width: 100%; height: 200px; }
@media (max-width: 768px) { .chart-section canvas { height: 300px; } }
#mmfChart { max-height: 400px; }

/* ===== Desktop vs Mobile nav behavior ===== */

/* Desktop (>=768px): show links inline, hide hamburger */
@media (min-width: 769px){
  .nav-toggle { display: none !important; }
  nav .nav-links {
    display: flex !important;
    position: static;
    background: transparent;
    padding: 0;
    border: 0;
    box-shadow: none;
  }
}

/* Mobile (<=768px): show hamburger, dropdown panel hidden by default */
@media (max-width: 768px){
  header { flex-direction: column; align-items: flex-start; }

  .nav-toggle { display: inline-flex !important; }

  nav { position: relative; }
  nav .nav-links {
    display: none;                    /* hidden until expanded */
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 220px;
    max-width: calc(100vw - 40px);    /* prevent overflow */
    background: #fff;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 8px 20px rgba(0,0,0,.12);
    flex-direction: column;
    gap: 10px;
    z-index: 10000;
  }

  /* Show dropdown when the button is expanded (set by JS) */
  .nav-toggle[aria-expanded="true"] + .nav-links { display: flex !important; }

  /* Make the green pills fit inside the white panel */
  nav .nav-links a.nav-button,
  nav .nav-links a.faq-link {
    display: block;
    width: 100%;
    box-sizing: border-box;
    margin: 0;
    text-align: left;
  }
}