:root {
    --primary: #003c64;
    --secondary: #f8fafc;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #00152e;
    --sidebar-width: 280px;
    --sidebar-collapsed: 80px;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --spacing: 15px;
    --layout-spacing: 5px;
    --border-radius: 5px;
    --gridmin: 110px;
    --border: 2px solid var(--secondary);
    --border-light: 1px solid #bebebe56;
    --border-bold: 4px solid var(--secondary);
    --lg-font: 24px;
    --lger-font: 34px;
    --avatar-dim: 40px;
    --deletebtn-dim: 22px;
    --primary-color: rgb(0, 194, 113);
    --secondary-color: rgb(255, 189, 65);
    --border-width: 1px;
    --box-shadow: 2px 6px 16px 5px gainsboro;
    --spacing-md: 15px;
    --spacing-lg: 24px;
    --spacing-sm: 10px;
    --large-font: 24px;
    --medium-font: 16px;
    --small-font: 14px;
    --primay-font: arial;
    --secondary-font: monospace;
    --max-width: 1200px;
    --form-max-width: 800px;
    --col-min-width: 250px;
    --danger: red;
    --alert: orange;
    --dark: black;
    --white: white;
    --dot-size: 10px;
    --dot-active-size: 12px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: var(--primay-font);
    transition: var(--transition);
    -webkit-tap-highlight-color: transparent;
    line-height: 1.5;
}
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: #2d3748;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

/* Links */
a {
  color: #3182ce;
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #2c5aa0;
  text-decoration: underline;
}

/* Lists */
ul, ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.5rem;
}

ul li {
  list-style-type: disc;
}

ol li {
  list-style-type: decimal;
}

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

/* Buttons */
button, .btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 0.375rem;
  cursor: pointer;
  font-size: 1rem;
  transition: all 0.3s ease;
  text-decoration: none;
}

button:hover, .btn:hover {
  background: #2c5aa0;
  color: white;
   text-decoration: none;
  transform: translateY(-1px);
}

/* Form Elements */
input, textarea, select {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #e2e8f0;
  border-radius: 0.375rem;
  font-size: 1rem;
  transition: border-color 0.3s ease;
}
select  {
  padding: 0.9rem;
}
textarea {
  min-height: 150px;
  resize: vertical;
}
input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: #3182ce;
  box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}
input[type=checkbox], input[type=radio] {
  width: auto;
  margin-right: 0.5rem;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
}
/* Responsive Typography */
@media (max-width: 768px) {
  html {font-size: 14px;}
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.5rem; }
  h4 { font-size: 1.25rem; }
}
.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  backdrop-filter: blur(5px);
}
.overlay.active {
  display: flex;
}
.overlay-content {
  max-width: 800px;
  width: 90%;
  background: white;
  padding: var(--spacing);
  border-radius: var(--border-radius);
  height: 80%;
  overflow-y: auto;
}