/* ======================= RESET ======================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

/* ======================= BODY ======================= */
body {
  background-color: #f9fafb;
  color: #1c1c1c;
  line-height: 1.6;
  margin-top: 60px; /* navbar height */
}


/* ======================= NAVBAR ======================= */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 30px;
  background-color: #0f2f2f;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  box-shadow: 0 3px 8px rgba(0,0,0,0.1);
}

.navbar-left .brand {
  display: flex;
  align-items: center;
}

.navbar-logo {
  width: 150px;
  height: auto;
}

.navbar-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.navbar-right a {
  text-decoration: none;
  color: #fff;
  font-weight: 600;
  padding: 6px 12px;
  transition: background-color 0.2s, color 0.2s;
  border-radius: 5px;
}

.navbar-right a:hover {
  background-color: #4CAF50;
  color: #fff;
}

/* Toggle button */
.navbar-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: #fff;
  cursor: pointer;
}

/* ======================= HERO ======================= */
.hero {
  background-color: #e8f5f5; /* subtle teal */
  padding: 60px 20px 40px;
  text-align: center;
  border-radius: 8px;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #0f2f2f;
  margin-bottom: 15px;
}

/* ======================= HERO ======================= */
.hero {
  background-color: #e8f5f5; /* subtle teal */
  padding: 60px 20px 40px; /* reduced top padding to fix gap */
  text-align: center;
  border-radius: 8px;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: #0f2f2f;
  margin-bottom: 15px;
}

.hero p {
  font-size: 1.2rem;
  color: #333;
  max-width: 700px;
  margin: 0 auto;
}

/* ======================= CONTAINER ======================= */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 40px auto;
}

/* ======================= INTRO TEXT ======================= */
.intro-text {
  font-size: 1.1rem;
  text-align: center;
  color: #1c1c1c;
  margin-bottom: 40px;
  line-height: 1.6;
}

/* ======================= EXERCISE BOXES ======================= */
.exercise-boxes {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 3x3 layout */
  gap: 25px;
  justify-items: center;
  align-items: stretch;
}

.exercise-box {
  background-color: #e8f5f5;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
  padding: 25px 20px;
  width: 100%;
  max-width: 350px;
  text-align: center;
  color: #0f2f2f;
  text-decoration: none;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border 0.3s ease;
  border: 2px solid transparent;
}

.exercise-box:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 20px rgba(0,0,0,0.15);
  border-color: #4CAF50;
}

.exercise-box h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 15px;
  color: #0f2f2f;
}

.exercise-box .description p {
  font-size: 1rem;
  line-height: 1.6;
  color: #1c1c1c;
}

/* ======================= DISCLAIMER ======================= */
.disclaimer {
  background-color: #ffe6e6; /* light red/pink */
  border: 1px solid #ff4d4d;
  color: #b30000;
  text-align: center;
  padding: 15px;
  margin-top: 40px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
}

/* ======================= RESPONSIVE ======================= */
@media (max-width: 1024px) {
  .exercise-boxes {
    grid-template-columns: repeat(2, 1fr); /* 2 columns */
  }
}

@media (max-width: 768px) {
  .exercise-boxes {
    grid-template-columns: 1fr; /* single column */
  }

  .navbar-right {
    display: none;
    flex-direction: column;
    gap: 10px;
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    background-color: #0f2f2f;
    padding: 10px 0;
  }

  .navbar-right.active {
    display: flex;
  }

  .navbar-toggle {
    display: block;
  }

  .header h1 {
    font-size: 2rem;
  }

  .header p {
    font-size: 1rem;
  }
}

@media (max-width: 480px) {
  .header {
    padding: 100px 15px 40px;
  }
}

/* ======================= FOOTER ======================= */
footer {
  background-color: #0f2f2f;
  color: #fff;
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  font-size: 0.9rem;
}

footer a {
  color: #4CAF50;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}
/* ======================= DONATION BUTTON ======================= */
.donation {
  display: inline-block;
  background: #FF6A00; /* bright orange */
  color: #fff;
  font-weight: 700;
  font-size: 1.1rem;
  padding: 12px 30px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(255, 106, 0, 0.4);
}

.donation:hover {
  background: #FF8500; /* slightly brighter on hover */
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 6px 15px rgba(255, 106, 0, 0.5);
}

.donation:active {
  transform: translateY(0) scale(1);
  box-shadow: 0 3px 8px rgba(255, 106, 0, 0.4);
}