:root {
  /* Light Theme Variables */
  --bg-color: #f8f9fa;
  --text-color: #212529;
  --navbar-bg: #ffffff;
  --navbar-text: #212529;
  --card-bg: #ffffff;
  --card-border: rgba(0, 0, 0, 0.125);
  --primary-color: #0d6efd;
  --secondary-color: #6c757d;
  --accent-color: #0d6efd;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  --link-color: #0d6efd;
  --link-hover-color: #0a58ca;
  --footer-bg: #f1f1f1;

  /* Pricing/Tech Card Specifics Light */
  --pricing-header-bg: rgba(0,0,0,0.03);
  --pricing-header-text: #212529;
  --pricing-body-bg: #ffffff;
  --pricing-body-text: #212529;
}

[data-theme="dark"] {
  /* Dark Theme Variables */
  --bg-color: #121212;
  --text-color: #e0e0e0;
  --navbar-bg: #1e1e1e;
  --navbar-text: #e0e0e0;
  --card-bg: #1e1e1e;
  --card-border: rgba(255, 255, 255, 0.125);
  --primary-color: #3d8bfd;
  --secondary-color: #adb5bd;
  --accent-color: #3d8bfd;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.4);
  --link-color: #6ea8fe;
  --link-hover-color: #8bb9fe;
  --footer-bg: #1a1a1a;

  /* Pricing/Tech Card Specifics Dark */
  --pricing-header-bg: rgba(255,255,255,0.05);
  --pricing-header-text: #e0e0e0;
  --pricing-body-bg: #1e1e1e;
  --pricing-body-text: #e0e0e0;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  transition: background-color 0.3s ease, color 0.3s ease;
  line-height: 1.6;
  padding-top: 80px; /* Prevent content from being hidden behind sticky navbar */
}

/* Navbar */
.navbar {
  background-color: var(--navbar-bg) !important;
  box-shadow: var(--shadow-sm);
  transition: background-color 0.3s ease;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
}

.navbar-brand, .nav-link {
  color: var(--navbar-text) !important;
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-link:hover {
  color: var(--primary-color) !important;
}

/* Logo Animation & Theme Switching */
.logo-anim {
  transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.logo-anim:hover {
  transform: scale(1.1) rotate(3deg);
}

/* Theme Visibility Logic */
html:not([data-theme="dark"]) .logo-dark {
    display: none !important;
}
html[data-theme="dark"] .logo-light {
    display: none !important;
}

/* Cards & Sections */
.card, .about-me {
  background-color: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
  margin-bottom: 1.5rem;
}

.about-me {
    padding: 2rem;
}

.card:hover, .about-me:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.card-header {
  background-color: rgba(0,0,0,0.03);
  border-bottom: 1px solid var(--card-border);
  font-weight: 600;
}

[data-theme="dark"] .card-header {
    background-color: rgba(255,255,255,0.05);
}

/* Pricing/Tech Card Specific Styles */
.card-h {
    background-color: var(--pricing-header-bg);
    color: var(--pricing-header-text);
    border-bottom: 1px solid var(--card-border);
}

.card-b {
    background-color: var(--pricing-body-bg);
    color: var(--pricing-body-text);
}

/* Ensure list items in cards inherit the correct color */
.card-b .list-group-item {
    color: inherit; /* This will make it use --pricing-body-text */
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-color);
  margin-bottom: 1rem;
}

a {
  color: var(--link-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--link-hover-color);
  text-decoration: underline;
}

/* Buttons */
.btn-primary {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background-color: var(--link-hover-color);
  border-color: var(--link-hover-color);
}

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: #fff;
}

/* Forms */
.form-control {
  background-color: var(--bg-color);
  color: var(--text-color);
  border: 1px solid var(--card-border);
}

.form-control:focus {
  background-color: var(--bg-color);
  color: var(--text-color);
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

/* Footer-like elements */
footer {
    background-color: var(--footer-bg);
    padding: 2rem 0;
    margin-top: 3rem;
}

/* Utilities */
.text-muted {
    color: var(--secondary-color) !important;
}

/* Theme Toggle */
#themeToggle {
    background: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-color);
    padding: 0.375rem 0.75rem;
    border-radius: 0.25rem;
    transition: all 0.3s ease;
}

#themeToggle:hover {
    background-color: var(--card-border);
}

/* Language Dropdown */
.lang-dropdown .dropdown-menu {
    background-color: var(--card-bg);
    border-color: var(--card-border);
}

.lang-dropdown .dropdown-item {
    color: var(--text-color);
}

.lang-dropdown .dropdown-item:hover {
    background-color: var(--card-border);
}

.lang-dropdown .btn {
    color: var(--text-color);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .display-5 {
        font-size: 2rem;
    }
}

/* Animations */
.typewriter-cursor {
  animation: blink 0.7s infinite;
}

@keyframes blink {
  from, to { opacity: 1; }
  50% { opacity: 0; }
}