:root {
  --bg: #f5f5f5;
  --text: #000;
  --box-bg: #fff;
  --border: #ccc;
  --primary: #0d6efd;
  --primary-light: rgba(13, 110, 253, 0.05);
}

.modern-navbar {
    background: #ffffff;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    transition: all 0.3s ease;
}

.modern-navbar .navbar-brand {
    position: relative;
    padding: 0.5rem 0;
}

.modern-navbar .navbar-brand img {
    transition: transform 0.3s ease;
}

.modern-navbar .navbar-brand:hover img {
    transform: scale(1.05);
}

.modern-navbar .nav-link {
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
}

.modern-navbar .nav-link:before {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--primary);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.modern-navbar .nav-link:hover:before {
    width: 80%;
}

.modern-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1030;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    margin: 0 !important;
    padding: 1rem 0;
    height: 70px;
}

body {
    padding-top: calc(70px + 1rem) !important;
    min-height: 100vh;
}

.modern-navbar .container-fluid {
    padding-left: 1rem;
    padding-right: 1rem;
}

.modern-navbar .dropdown {
    position: static;
}

@media (min-width: 992px) {
    .modern-navbar .dropdown {
        position: relative;
    }
}

.modern-navbar .dropdown-menu {
    border: none;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(31, 38, 135, 0.15);
    margin-top: 0.5rem !important;
    min-width: 200px;
}

.modern-navbar .dropdown-item {
    transition: all 0.2s ease;
    position: relative;
    padding-left: 1.5rem;
}

.modern-navbar .dropdown-item:before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 50%;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: all 0.2s ease;
    transform: translateY(-50%);
}

.modern-navbar .dropdown-item:hover {
    background-color: var(--primary-light);
    padding-left: 2rem;
}

.modern-navbar .dropdown-item:hover:before {
    width: 0.75rem;
}

.modern-navbar .navbar-toggler {
    padding: 0.5rem;
    transition: all 0.3s ease;
}

.modern-navbar .navbar-toggler:hover {
    transform: scale(1.05);
}

.modern-navbar .navbar-toggler:focus {
    box-shadow: none;
}

@media (max-width: 991.98px) {
    .modern-navbar .navbar-collapse {
        background: rgba(255, 255, 255, 0.95);
        margin-top: 1rem;
        padding: 1rem;
        border-radius: 0.5rem;
        box-shadow: 0 8px 32px rgba(31, 38, 135, 0.1);
    }
    
    .modern-navbar .nav-item {
        margin: 0.5rem 0;
    }
}

body {
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 20px;
}

[data-theme="dark"] {
  --bg: #121212;
  --text: #fff;
  --box-bg: #1e1e1e;
  --border: #444;
}

h2 {
  text-align: center;
}

.compare-section {
  border: 2px dashed var(--border);
  padding: 10px;
  background: var(--box-bg);
  position: relative;
}

.compare-section.dragover {
  background: #eaffea;
  border-color: #4CAF50;
}

textarea {
  width: 100%;
  height: 25rem;
  padding: 10px;
  font-family: monospace;
  font-size: 14px;
  box-sizing: border-box;
  background: var(--box-bg);
  color: var(--text);
  border: 1px solid var(--border);
  margin-top: 1rem;
}

button {
  cursor: pointer;
  font-size: 1rem;
  padding: 15px 30px;
  border: none;
  border-radius: 8px;
  outline: none;
  color: #fff;
  font-weight: 600;
  transition: all 0.4s ease;
  position: relative;
  overflow: hidden;
}

.options {
  margin-bottom: 10px;
}

.comparison-wrapper {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.result-side-wrapper {
  display: flex;
  flex-direction: row;
  width: 50%;
  overflow: hidden;
}

.line-numbers {
  background: #eee;
  padding: 10px;
  text-align: right;
  user-select: none;
  font-family: monospace;
  color: #999;
  border-right: 1px solid #ccc;
}

.result-side {
  width: 100%;
  padding: 10px;
  background: #f9f9f9;
  white-space: pre-wrap;
  border: 1px solid #ccc;
  overflow-y: auto;
  max-height: 400px;
}

.diff {
  background-color: #ffe6e6;
  color: red;
  font-weight: bold;
}

.same {
  color: black;
}

#similarity {
  font-size: 18px;
  margin-top: 10px;
  font-weight: bold;
  color: #333;
}

input[type="file"] {
  font-size: large;
}

.buttons {
  display: flex;
  gap: 10px;
  margin-top: 10px;
  display: block;
  text-align: center;
}

/* Modern Navigation Bar */

.modern-navbar {
  background: linear-gradient(90deg, #f8fafc 60%, #e9f1fa 100%);
  border: 1px solid #e3e8ee;
  box-shadow: 0 2px 12px 0 rgba(80, 120, 200, 0.07);
}

.modern-navbar .navbar-brand {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  font-weight: 700;
  color: #2563eb !important;
}

.modern-navbar .navbar-nav .nav-link {
  color: #333;
  font-weight: 500;
  border-radius: 8px;
}

.modern-navbar .navbar-nav .nav-link.active,
.modern-navbar .navbar-nav .nav-link:focus,
.modern-navbar .navbar-nav .nav-link:hover {
  background: #e0e7ff;
  color: #2563eb !important;
}

.modern-navbar .dropdown-menu {
  min-width: 200px;
  border: 1px solid #e3e8ee;
  background: #fff;
}

.modern-navbar .dropdown-item {
  border-radius: 6px;
  font-size: 15px;
  color: #333;
}

.modern-navbar .dropdown-item:hover,
.modern-navbar .dropdown-item:focus {
  background: #e0e7ff;
  color: #2563eb;
}

.modern-navbar .navbar-toggler {
  background: #e0e7ff;
  border-radius: 8px;
}

@media (max-width: 991.98px) {
  .modern-navbar .navbar-collapse {
    background: #f8fafc;
    border-radius: 0 0 16px 16px;
    margin-top: 8px;
    box-shadow: 0 4px 16px 0 rgba(80, 120, 200, 0.07);
  }

  .modern-navbar .navbar-nav {
    gap: 0 !important;
  }
}

/*Footer Styles*/
.footer-links .footer-link {
  color: #0d6efd;
  transition: color 0.2s;
}

.footer-links .footer-link:hover,
.footer-links .footer-link:focus {
  color: #0056b3;
  text-decoration: underline;
}