:root {
  /* Colors */
  --primary-color: #9B4819;     /* Warm terracotta */
  --secondary-color: #D68C45;   /* Muted orange */
  --success-color: #8C9B4C;     /* Olive green */
  --danger-color: #C23B22;      /* Warm red */
  --background-color: #FDF6EC;  /* Warm off-white */
  --text-color: #2C1810;        /* Deep brown */

  /* Recipe Card */
  --recipe-card-bg: #ffffff;
  --recipe-card-border: #E8D5C4;  /* Light warm beige */
  --recipe-card-shadow: rgba(155, 72, 25, 0.1);
  --recipe-card-title-color: #9B4819;  /* Same as primary */
  --recipe-card-text-color: #594D46;   /* Muted brown */

  /* Sidebar */
  --sidebar-bg: #9B4819;          /* Primary color */
  --sidebar-border: #B25F2C;      /* Lighter terracotta */
  --sidebar-brand-color: #ffffff;
  --sidebar-link-color: rgba(255, 255, 255, 0.9);
  --sidebar-link-hover-color: #ffffff;
  --sidebar-link-hover-bg: rgba(214, 140, 69, 0.2);  /* Secondary color with opacity */
  --sidebar-mobile-height: 60px;

  /* Spacing */
  --spacing-unit: 1rem;
  --container-max-width: 1200px;

  /* Typography */
  --font-family-base: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-base: 1rem;
  --line-height-base: 1.5;

  /* Border Radius */
  --border-radius: 0.25rem;
  --border-radius-lg: 0.5rem;

  /* Transitions */
  --transition-base: all 0.2s ease-in-out;
}

/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--text-color);
  background-color: var(--background-color);
}

/* Layout */
.layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Sidebar */
.sidebar {
  background-color: var(--sidebar-bg);
  border-bottom: 1px solid var(--sidebar-border);
  z-index: 1000;
}

.sidebar .sidebar-content {
  padding: var(--spacing-unit);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar .brand a {
  color: var(--sidebar-brand-color);
  text-decoration: none;
  font-size: 1.5rem;
  font-weight: bold;
  display: block;
  padding: var(--spacing-unit) 0;
}

.sidebar .nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-unit);
}

.sidebar .nav-link {
  color: var(--sidebar-link-color);
  text-decoration: none;
  padding: calc(var(--spacing-unit) * 0.5);
  border-radius: var(--border-radius);
  transition: var(--transition-base);
}

.sidebar .nav-link:hover {
  color: var(--sidebar-link-hover-color);
  background-color: var(--sidebar-link-hover-bg);
}

/* Main content */
.main-content {
  flex: 1;
  padding: var(--spacing-unit);
}

/* Recipe Cards */
.recipe-card {
  background-color: var(--recipe-card-bg);
  border: 1px solid var(--recipe-card-border);
  border-radius: var(--border-radius-lg);
  padding: calc(var(--spacing-unit) * 1.5);
  margin-bottom: var(--spacing-unit);
  box-shadow: 0 4px 6px var(--recipe-card-shadow);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.recipe-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.recipe-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 12px var(--recipe-card-shadow);
}

.recipe-card:hover::before {
  opacity: 1;
}

.recipe-card .card-title {
  color: var(--recipe-card-title-color);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-unit);
  border-bottom: 1px solid rgba(44, 80, 44, 0.3);
  padding-bottom: calc(var(--spacing-unit) * 0.5);
}

.recipe-card .card-text {
  color: var(--recipe-card-text-color);
  margin-bottom: calc(var(--spacing-unit) * 1.5);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Buttons */
.btn {
  padding: calc(var(--spacing-unit) * 0.5) var(--spacing-unit);
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
  text-decoration: none;
  display: inline-block;
  margin-right: calc(var(--spacing-unit) * 0.5);
}

.btn:last-child {
  margin-right: 0;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
}

.btn-primary:hover {
  background-color: color-mix(in srgb, var(--primary-color) 85%, white);
}

.btn-danger {
  background-color: color-mix(in srgb, var(--danger-color) 70%, transparent);
  color: white;
  backdrop-filter: blur(4px);
}

.btn-danger:hover {
  background-color: var(--danger-color);
}

/* Recipe grid layout */
#recipe-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: calc(var(--spacing-unit) * 1.5);
  padding: var(--spacing-unit) 0;
}

#recipe-list .col-12 {
  grid-column: 1 / -1;
  text-align: center;
  padding: calc(var(--spacing-unit) * 2);
}

/* Forms */
.form-control {
  width: 100%;
  padding: calc(var(--spacing-unit) * 0.5);
  border: 1px solid var(--primary-color);
  border-radius: var(--border-radius);
  background-color: color-mix(in srgb, var(--background-color) 90%, black);
  color: var(--text-color);
}

.form-control:focus {
  outline: none;
  border-color: var(--secondary-color);
}

/* Alerts */
.alert {
  padding: var(--spacing-unit);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-unit);
}

.alert-info {
  background-color: color-mix(in srgb, var(--secondary-color) 20%, transparent);
  border: 1px solid var(--secondary-color);
}

/* HTMX specific styles */
.htmx-indicator {
  opacity: 0;
  transition: opacity 200ms ease-in;
}

.htmx-request .htmx-indicator {
  opacity: 1;
}

.htmx-request.htmx-indicator {
  opacity: 1;
}

/* Media Queries */
@media (min-width: 768px) {
  .layout {
    flex-direction: row;
  }

  .sidebar {
    width: var(--sidebar-width);
    border-right: 1px solid var(--sidebar-border);
    border-bottom: none;
    height: 100vh;
    left: 0;
    top: 0;
  }

  .sidebar .sidebar-content {
    flex-direction: column;
    align-items: flex-start;
    height: 100%;
  }

  .sidebar .brand a {
    margin-bottom: calc(var(--spacing-unit) * 2);
  }

  .sidebar .nav-links {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
  }

  .sidebar .nav-link {
    width: 100%;
    padding: var(--spacing-unit);
  }

  .main-content {
    margin-left: var(--sidebar-width);
    padding: calc(var(--spacing-unit) * 2);
  }
}