/* =====================
   Theme Color Variables
===================== */
:root {
    --primary: #20c997;          /* Teal Green */
    --primary-hover: #138d75;    /* Deep Teal */
    --secondary: #001f3f;        /* Navy Blue */
    --dark-bg: #1f1f1f;          /* Dark mode background */
    --dark-card: #2c2c2c;        /* Dark card gray */
    --light-bg: #f4f4f4;         /* Soft Light Gray */
    --white: #ffffff;            /* Clean White */
    --text-dark: #001737;        /* Dark Navy */
    --text-light: #f0f0f0;       /* Light Text on Dark */
    --muted: #aaa;               /* Muted Gray */
  }
  
  /* ============
     Base Styles
  ============= */
  body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background-color: var(--light-bg);
    color: var(--text-dark);
    padding: 1rem;
    transition: background-color 0.3s, color 0.3s;
  }
  
  body.dark-mode {
    background-color: var(--dark-bg);
    color: var(--text-light);
  }
  
  /* Header/Footer */
  header, footer {
    text-align: center;
    margin-bottom: 1rem;
  }
  
  /* Spacing for Dark Mode button below title */
  .dark-toggle-wrapper {
    margin-top: 0.5rem;
  }
  
  /* Brand Gradient Title */
  .brand-gradient {
    font-weight: 700;
    font-size: 2rem;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
  }
  
  /* ============
     Form Layout
  ============= */
  form {
    display: grid;
    gap: 1rem;
    max-width: 500px;
    margin: auto;
    background: var(--white);
    padding: 1rem;
    border-radius: 1rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  }
  
  body.dark-mode form {
    background: var(--dark-card);
  }
  
  .form-group {
    display: flex;
    flex-direction: column;
  }
  
  .radio-group {
    display: flex;
    gap: 1rem;
  }
  
  .form-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
  }
  
  /* Base button styles (e.g. Calculate) */
  button {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    background-color: var(--primary);
    color: white;
    cursor: pointer;
    transition: background-color 0.2s;
  }
  
  button:hover {
    background-color: var(--primary-hover);
  }
  
  /* Clear button (blue) */
  #clearForm {
    background-color: #007bff;
  }
  
  #clearForm:hover {
    background-color: #0056b3;
  }
  
  /* Copy button (purple) with spacing */
  #copyResults {
    background-color: #6f42c1;
    margin-top: 1.5rem;
    display: block;
    width: 100%;
  }
  
  #copyResults:hover {
    background-color: #5936a2;
  }
  
  /* ================
     Results Section
  ================ */
  #results {
    max-width: 500px;
    margin: 2rem auto;
    background: var(--white);
    padding: 1rem;
    border-radius: 1rem;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
  }
  
  body.dark-mode #results {
    background: var(--dark-card);
  }
  
  /* Macro Visual Bars */
  .macro-bars {
    display: flex;
    height: 24px;
    margin-top: 1rem;
    overflow: hidden;
    border-radius: 0.5rem;
  }
  
  .macro-bar {
    height: 100%;
  }
  
  /* Static widths since macros are fixed % */
  .protein {
    background-color: #007bff;
    width: 30%;
  }
  
  .carbs {
    background-color: #28a745;
    width: 40%;
  }
  
  .fat {
    background-color: #ffc107;
    width: 30%;
  }
  
  /* ================
     Mobile Styles
  ================ */
  @media (max-width: 600px) {
    form,
    #results {
      padding: 0.5rem;
    }
  
    .form-buttons {
      flex-direction: column;
    }
  
    .radio-group {
      flex-direction: column;
    }
  
    #copyResults {
      margin-top: 1rem;
    }
  }