:root {
  --primary: #e63946;
  --primary-dark: #c1121f;
  --secondary: #1d3557;
  --accent: #457b9d;
  --light: #f1faee;
  --white: #ffffff;
  --glass: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(255, 255, 255, 0.2);
  --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
  --text: #1d3557;
  --text-light: #457b9d;
  --danger: #d62828;
  --success: #2a9d8f;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--light) url('../assets/bg-pattern.png') fixed;
  background-size: 400px;
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideIn {
  from {
    transform: translateX(-20px);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.animate-fade {
  animation: fadeIn 0.6s ease-out forwards;
}

.animate-slide {
  animation: slideIn 0.5s ease-out forwards;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* Navbar */
.navbar {
  background: var(--glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--glass-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: 15px 50px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.navbar .logo {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -1px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.navbar .user-info {
  display: flex;
  align-items: center;
  gap: 20px;
}

.username {
  font-weight: 700;
  color: var(--secondary);
  font-size: 1.1rem;
}

.streak {
  background: var(--primary);
  color: white;
  padding: 8px 16px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(230, 57, 70, 0.3);
  transition: var(--transition);
}

.streak:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(230, 57, 70, 0.4);
}

/* Buttons */
.btn {
  padding: 14px 28px;
  border: none;
  border-radius: 12px;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 600;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  box-shadow: 0 4px 15px rgba(230, 57, 70, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(230, 57, 70, 0.4);
  filter: brightness(1.1);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--accent);
  color: var(--accent);
}

.btn-outline:hover {
  background: var(--accent);
  color: white;
}

/* Cards */
.card {
  background: var(--glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  padding: 35px;
  border-radius: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 30px;
  transition: var(--transition);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(31, 38, 135, 0.2);
}

/* Typography */
h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--secondary);
  line-height: 1.2;
}

h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 15px;
}

p {
  color: var(--text-light);
  margin-bottom: 15px;
}

/* Form Elements */
.form-group {
  margin-bottom: 25px;
}

label {
  display: block;
  margin-bottom: 10px;
  font-weight: 600;
  color: var(--secondary);
  font-size: 0.95rem;
}

input,
select {
  width: 100%;
  padding: 16px;
  border: 1px solid #e0e0e0;
  border-radius: 14px;
  font-size: 1rem;
  background: white;
  transition: var(--transition);
}

input:focus,
select:focus {
  border-color: var(--primary);
  outline: none;
  box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.1);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
}

/* Utilities */
.text-center {
  text-align: center;
}

.mt-4 {
  margin-top: 1.5rem;
}

.mb-4 {
  margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
  .navbar {
    padding: 15px 20px;
  }

  h1 {
    font-size: 2rem;
  }

  .container {
    padding: 20px;
  }
}