@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
  /* Color Palette - Premium Dark */
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --secondary-color: #ec4899;
  --background-dark: #0f172a;
  --background-light: #1e293b;

  /* Glassmorphism Variables */
  --glass-bg: rgba(30, 41, 59, 0.7);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --backdrop-blur: 12px;

  /* Text Colors */
  --text-main: #f8fafc;
  --text-muted: #94a3b8;

  /* Spacing & Radius */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;

  /* Animation */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Outfit', sans-serif;
}

body {
  background-color: var(--background-dark);
  /* Vibrant abstract background gradient */
  background-image: radial-gradient(
      circle at 10% 20%,
      rgba(99, 102, 241, 0.15) 0%,
      transparent 20%
    ),
    radial-gradient(
      circle at 90% 80%,
      rgba(236, 72, 153, 0.15) 0%,
      transparent 20%
    );
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

p,
small {
  color: var(--text-muted);
  line-height: 1.6;
}

hr {
  margin: 0.4rem 0rem;
  border-color: var(--text-muted);
}

.icon-fade {
  transition: opacity 0.15s ease-in-out;
}

a {
  text-decoration: none;
  color: var(--primary-color);
  transition: var(--transition-fast);
}

a:hover {
  color: var(--secondary-color);
}

/* Glass Component Utility */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--backdrop-blur));
  -webkit-backdrop-filter: blur(var(--backdrop-blur));
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-md);
}

.container-custom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Buttons */
.btn-primary {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--primary-hover)
  );
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-medium);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-danger {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-medium);
}

.btn-danger:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* Form Elements */
.form-control {
  width: 100%;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  outline: none;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-label {
  display: block;
  margin-bottom: 8px;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

/* Cards */
.todo-card {
  background: rgba(30, 41, 59, 0.4);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition-medium);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.todo-card:hover {
  background: rgba(30, 41, 59, 0.6);
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Navbar specific override */
.navbar-custom {
  background: rgba(15, 23, 42, 0.85); /* Slightly clearer for nav */
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
}

.nav-link {
  color: var(--text-muted);
  font-weight: 500;
  margin: 0 10px;
  transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(
    to right,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.5s ease-out forwards;
}

/* Badge/Tags */
.badge {
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
}
.badge-complete {
  background: rgba(16, 185, 129, 0.2);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.2);
}
.badge-pending {
  background: rgba(245, 158, 11, 0.2);
  color: #f59e0b;
  border: 1px solid rgba(245, 158, 11, 0.2);
}