:root {
  --primary-start: #667eea;
  --primary-end: #764ba2;
  --bs-primary: #667eea;
  --bs-primary-rgb: 102, 126, 234;
}

[data-theme="dark"] {
  --bs-body-bg: #1a202c;
  --bs-body-color: #e2e8f0;
  --bs-card-bg: #2d3748;
  --bs-border-color: #4a5568;
}

[data-color="purple"] {
  --primary-start: #667eea;
  --primary-end: #764ba2;
  --bs-primary: #667eea;
}

[data-color="blue"] {
  --primary-start: #6cb4ee;
  --primary-end: #4a90e2;
  --bs-primary: #6cb4ee;
}

[data-color="green"] {
  --primary-start: #8fbc8f;
  --primary-end: #6b9b6e;
  --bs-primary: #8fbc8f;
}

[data-color="earth"] {
  --primary-start: #c9a66b;
  --primary-end: #8b7355;
  --bs-primary: #c9a66b;
}

[data-color="sunset"] {
  --primary-start: #ff9a8b;
  --primary-end: #ff6b9d;
  --bs-primary: #ff9a8b;
}

body {
  background: linear-gradient(
    135deg,
    var(--primary-start) 0%,
    var(--primary-end) 100%
  );
  min-height: 100vh;
  padding-top: 76px;
  transition: background 0.3s ease;
}

[data-theme="dark"] {
  background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
}

/* Navbar Styles */
.navbar-custom {
  background: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] .navbar-custom {
  background: rgba(45, 55, 72, 0.95) !important;
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.5rem;
  background: linear-gradient(
    135deg,
    var(--primary-start) 0%,
    var(--primary-end) 100%
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#currentDateTime {
  white-space: nowrap;
  font-size: 0.9rem;
  font-weight: 500;
  color: #667eea;
  cursor: default;
}

[data-theme="dark"] #currentDateTime {
  color: #a78bfa;
}

/* Scroll to Top Button */
#scrollTopBtn {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 1000;
  display: none;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--primary-start) 0%,
    var(--primary-end) 100%
  );
  border: none;
  color: white;
  font-size: 1.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
  cursor: pointer;
  transition:
    transform 0.3s ease,
    opacity 0.3s ease;
  opacity: 0;
}

#scrollTopBtn.show {
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
}

#scrollTopBtn:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

[data-theme="dark"] .card {
  background-color: var(--bs-card-bg);
  color: var(--bs-body-color);
  border-color: var(--bs-border-color);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: #374151;
  color: var(--bs-body-color);
  border-color: var(--bs-border-color);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
  background-color: #374151;
  color: var(--bs-body-color);
  border-color: var(--bs-primary);
}

[data-theme="dark"] .list-group-item {
  background-color: #374151;
  color: var(--bs-body-color);
  border-color: var(--bs-border-color);
}

[data-theme="dark"] .badge {
  background-color: #374151 !important;
  color: var(--bs-body-color) !important;
  border: 1px solid var(--bs-border-color);
}

[data-theme="dark"] .navbar-custom .nav-link,
[data-theme="dark"] .navbar-custom .dropdown-item {
  color: var(--bs-body-color) !important;
}

[data-theme="dark"] .dropdown-menu {
  background-color: var(--bs-card-bg);
  border-color: var(--bs-border-color);
}

[data-theme="dark"] .dropdown-item:hover {
  background-color: #374151;
}

.hero-section {
  text-align: center;
  color: white;
  padding: 40px 0;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-section h1 {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.hero-section p {
  font-size: 1.3rem;
  opacity: 0.95;
}

.btn-gradient {
  background: linear-gradient(
    135deg,
    var(--primary-start) 0%,
    var(--primary-end) 100%
  );
  border: none;
  color: white;
  transition:
    transform 0.2s,
    box-shadow 0.2s;
}

.btn-gradient:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  color: white;
}

.timeline {
  position: relative;
  padding-left: 50px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 30px;
  top: 0;
  bottom: 0;
  width: 4px;
  background: rgba(255, 255, 255, 0.3);
}

.timeline-item {
  position: relative;
  margin-bottom: 30px;
}

.timeline-badge {
  position: absolute;
  left: -50px;
  width: 60px;
  height: 60px;
  background: linear-gradient(
    135deg,
    var(--primary-start) 0%,
    var(--primary-end) 100%
  );
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: bold;
  font-size: 1.2rem;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  z-index: 2;
}

.timeline-card {
  transition: transform 0.3s ease;
}

.timeline-card:hover {
  transform: translateX(5px);
}

.progress-custom {
  height: 30px;
  background: linear-gradient(
    135deg,
    var(--primary-start) 0%,
    var(--primary-end) 100%
  );
}

.tech-badge {
  display: inline-block;
  margin: 5px;
}

.form-check-input:checked {
  background-color: var(--bs-primary);
  border-color: var(--bs-primary);
}

.goal-item {
  transition: background-color 0.2s;
}

.goal-item:hover .btn-delete {
  opacity: 1;
}

.btn-delete {
  opacity: 0;
  transition: opacity 0.2s;
}

.completed-goal {
  text-decoration: line-through;
  opacity: 0.6;
}

.page-content {
  display: none;
}

.page-content.active {
  display: block;
}

.about-section {
  max-width: 800px;
  margin: 0 auto;
}

/* Footer Styles */
.footer {
  background: rgba(255, 255, 255, 0.95);
  border-top: 1px solid #e5e7eb;
  margin-top: auto;
  font-size: 0.95rem;
  color: #6b7280;
}

[data-theme="dark"] .footer {
  background: rgba(45, 55, 72, 0.95);
  border-top-color: #4a5568;
  color: #d1d5db;
}

.footer p {
  margin: 0;
}

.footer-link {
  color: var(--bs-primary);
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s;
}

.footer-link:hover {
  opacity: 0.8;
  text-decoration: underline;
}

[data-theme="dark"] .footer-link {
  color: #a78bfa;
}

@media (max-width: 768px) {
  .hero-section h1 {
    font-size: 2rem;
  }

  .timeline {
    padding-left: 40px;
  }

  .timeline-badge {
    left: -40px;
    width: 45px;
    height: 45px;
    font-size: 1rem;
  }

  .timeline::before {
    left: 20px;
  }

  #scrollTopBtn {
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
  }
}