/* Custom Theme Palette Configuration */
:root {
  --deep-blue-ocean: #0a3d62;
  --ocean-gradient-start: #0c4a6e;
  --ocean-gradient-end: #032b45;
  --ocean-mist-bg: #f0f7fa;
  --ocean-tray-bg: #e0f2fe;
  --bermuda-grass: #2ecc71;
  --morning-green-light: #e8f8f5;
  --morning-green-text: #196f3d;
  --soft-fail-bg: #fdf2f2;
  --soft-fail-text: #9b2c2c;
  --text-dark: #1e293b;
  --border-mist: rgba(12, 74, 110, 0.15);
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, var(--ocean-gradient-start), var(--ocean-gradient-end));
  background-attachment: fixed;
  padding: 30px 20px;
  display: flex;
  justify-content: center;
  margin: 0;
  min-height: 100vh;
  box-sizing: border-box;
}

.calculator-container {
  background: #ffffff;
  padding: 30px;
  border-radius: 16px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
  max-width: 520px;
  width: 100%;
}

h2 { 
  text-align: center; 
  color: var(--deep-blue-ocean); 
  margin-top: 0;
  margin-bottom: 25px; 
  font-size: 24px;
  font-weight: 700;
}

fieldset {
  border: 1.5px solid var(--border-mist);
  border-radius: 12px;
  margin-bottom: 20px;
  padding: 18px;
  background-color: var(--ocean-mist-bg);
}

legend { 
  font-weight: 700; 
  color: var(--deep-blue-ocean); 
  padding: 0 8px; 
  font-size: 13px;
  text-transform: uppercase;
}

.input-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

label { 
  font-size: 14px; 
  color: var(--text-dark); 
  width: 60%; 
  font-weight: 500;
}

input, select {
  width: 38%;
  padding: 8px 10px;
  border: 1.5px solid #cbd5e1;
  border-radius: 6px;
  font-size: 14px;
  color: var(--deep-blue-ocean);
  background-color: #ffffff;
}

input:focus, select:focus {
  outline: none;
  border-color: var(--bermuda-grass);
  box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.2);
}

#custom-inputs-container {
  background-color: var(--ocean-tray-bg);
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
  border: 1px dashed rgba(12, 74, 110, 0.2);
}

.results-box {
  background: var(--ocean-mist-bg);
  padding: 20px;
  border-radius: 12px;
  border: 1.5px solid var(--border-mist);
  margin-top: 25px;
}

.results-box h3 { 
  margin-top: 18px; 
  color: var(--deep-blue-ocean); 
  border-bottom: 2px solid rgba(12, 74, 110, 0.1); 
  padding-bottom: 6px; 
  font-size: 15px;
}

.results-box h3:first-of-type { margin-top: 0; }
.results-box p { display: flex; justify-content: space-between; font-size: 14px; margin: 10px 0; }
.results-box span { font-weight: 700; color: var(--deep-blue-ocean); }

.status-box {
  text-align: center;
  font-weight: 700;
  padding: 14px;
  border-radius: 8px;
  margin-top: 20px;
  font-size: 16px;
}

.pass { background-color: var(--morning-green-light); color: var(--morning-green-text); border: 1.5px solid rgba(46, 204, 113, 0.35); }
.fail { background-color: var(--soft-fail-bg); color: var(--soft-fail-text); border: 1.5px solid rgba(155, 44, 44, 0.25); }

/* ==========================================================================
   BUTTON TRAY STYLING (Fixes the unstyled buttons)
   ========================================================================== */
.action-btn-tray {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.btn {
  flex: 1;
  padding: 12px;
  font-size: 14px;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  border: none;
  transition: opacity 0.2s, transform 0.1s;
  text-transform: uppercase;
}

.btn:active { transform: scale(0.98); }
.btn-reset { background-color: #e2e8f0; color: #475569; }
.btn-reset:hover { background-color: #cbd5e1; }
.btn-pdf { background-color: var(--deep-blue-ocean); color: #ffffff; }
.btn-pdf:hover { opacity: 0.9; }

/* ... keep all your previous main container, layout, and button styles ... */

/* Hide print-only headers and footers completely while using the app on a screen */
.print-only-header, .print-only-footer {
  display: none;
}
/* ==========================================================================
   UPDATED: STRICT SINGLE-PAGE A4 PRINT CONFIGURATION
   ========================================================================== */
@media print {
  /* Hides the default browser headers/footers (URLs, page numbers, dates) */
  @page {
    size: A4 portrait;
    margin: 0.4in 0.5in 0.4in 0.5in;
  }

  /* Force the background to be pure white and clear margins */
  html, body {
    background: #ffffff !important;
    height: 99% !important;
    page-break-after: avoid !important;
    page-break-before: avoid !important;
    overflow: hidden !important;
    font-size: 11px !important; /* Slightly smaller base font to save page space */
  }

  /* Shrink parent wrappers to prevent page spilling */
  .calculator-container {
    box-shadow: none !important;
    max-width: 100% !important;
    padding: 0 !important;
    margin: 0 !important;
    border: none !important;
    height: auto !important;
  }

  .print-only-header {
    display: block !important;
    font-size: 14px !important;
    font-weight: 700;
    color: #0c4a6e;
    border-bottom: 2px solid #0a3d62;
    padding-bottom: 3px;
    margin-bottom: 12px !important;
    text-transform: uppercase;
  }

  h2 {
    color: #0a3d62 !important;
    margin-top: 0 !important;
    margin-bottom: 10px !important;
    font-size: 18px !important;
  }

  /* Make spacing tighter between the measurement boxes */
  fieldset {
    background: #ffffff !important;
    border: 1px solid #cbd5e1 !important;
    margin-bottom: 8px !important;
    padding: 8px 12px !important;
    page-break-inside: avoid !important;
  }

  .input-row {
    margin-bottom: 6px !important;
  }

  input, select, .action-btn-tray {
    display: none !important;
  }

  .input-row::after {
    content: attr(data-print-value);
    font-weight: 700;
    color: #0a3d62;
    font-size: 12px;
  }

  .results-box {
    background: #ffffff !important;
    border: 1px solid #cbd5e1 !important;
    padding: 12px !important;
    margin-top: 10px !important;
  }

  .results-box h3 {
    margin-top: 10px !important;
    padding-bottom: 4px !important;
  }
  .results-box h3:first-of-type {
    margin-top: 0 !important;
  }

  .status-box {
    margin-top: 8px !important;
    padding: 6px !important;
    border: 1.5px solid #196f3d !important;
  }

  /* Pull the footer text tighter to the main report card elements */
  .print-only-footer {
    display: block !important;
    margin-top: 20px !important;
    text-align: center !important;
    font-size: 10px !important;
    color: #475569 !important;
    page-break-inside: avoid !important;
  }
  
  .footer-divider {
    border-top: 1px solid #cbd5e1 !important;
    margin-bottom: 6px !important;
  }
  
  .footer-copyright {
    font-weight: 700 !important;
    margin: 1px 0 !important;
    color: #1e293b !important;
  }
  
  .footer-queries {
    margin: 1px 0 !important;
  }
  
  .email-link {
    color: #0c4a6e !important;
    font-weight: 600 !important;
  }
  
  .footer-disclaimer {
    margin-top: 4px !important;
    color: #64748b !important;
  }
  /* Add this to your style sheet */
.results-box.hidden-results {
  display: none !important; /* Hides the entire panel frame from display when reset */
}

/* Neutral styling adjustment rule for compliance badge box when blank */
.status-box.neutral {
  background-color: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
}
/* Container styling for the results panel with a smooth opacity fade */
.results-box {
  opacity: 1;
  max-height: 1000px; /* Large enough value to safely display full content */
  overflow: hidden;
  transition: opacity 0.4s ease, max-height 0.4s ease, padding 0.4s ease, margin 0.4s ease;
}

/* Hides the results panel elements cleanly and smoothly fades it away */
.results-box.hidden-results {
  opacity: 0;
  max-height: 0;
  padding-top: 0 !important;
  padding-bottom: 0 !important;
  margin-top: 0 !important;
  margin-bottom: 0 !important;
  border: none !important;
}

/* Styled text notice to fill out the form when the calculator is blank */
.empty-state-notice {
  text-align: center;
  color: #666666;
  font-style: italic;
  padding: 15px;
  background-color: #f9f9f9;
  border: 1px dashed #cccccc;
  border-radius: 6px;
  margin-top: 15px;
  opacity: 1;
  transition: opacity 0.4s ease;
}

/* Neutral baseline override rule for compliance status badge */
.status-box.neutral {
  background-color: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
}
/* Styled red error badge alert for invalid negative or zero parameters */
.error-state-box {
  background-color: #fde8e8;
  border: 1px solid #f8b4b4;
  color: #9b1c1c;
  padding: 15px;
  border-radius: 6px;
  margin-top: 15px;
  margin-bottom: 15px;
  font-size: 0.95rem;
  line-height: 1.4;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
}
/* Styling for the new Project Identification block */
.project-details-section {
  border: 1px solid #cbd5e1;
  background-color: #f8fafc;
  margin-bottom: 20px;
  border-radius: 6px;
}
/* Fixed Navigation Link - Screen Pinning Layout */
.nav-control-header {
    position: fixed;   /* Pins the link directly to the screen view boundaries */
    top: 25px;         /* Positions it 25 pixels down from the very top */
    left: 25px;        /* Positions it 25 pixels out from the very left edge */
    z-index: 999999;   /* Absolute max priority layer to overlay all cards */
}

.back-home-link {
    font-family: 'Nunito', sans-serif;
    font-size: 16px;
    font-weight: 700;
    color: #1a759f; /* Blue color matching the theme */
    text-decoration: underline; /* Adds the clean link underline */
    transition: color 0.2s ease;
}

.back-home-link:hover {
    color: #2d6a4f; /* Changes to green on hover */
}