:root {
  --primary: #ff6b35;
  --secondary: #2a9d8f;
  --accent: #e9c46a;
  --light: #f4f1de;
  --dark: #264653;
  --success: #2a9d8f;
  --warning: #e76f51;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  --radius: 12px;

  /* Light theme */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-card: #ffffff;
  --text-primary: #333333;
  --text-secondary: #666666;
  --border: #e0e0e0;

  /* Dark theme */
  --dark-bg-primary: #121212;
  --dark-bg-secondary: #1e1e1e;
  --dark-bg-card: #252525;
  --dark-text-primary: #f0f0f0;
  --dark-text-secondary: #b0b0b0;
  --dark-border: #333333;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background: linear-gradient(
    135deg,
    var(--bg-secondary) 0%,
    var(--bg-primary) 100%
  );
  color: var(--text-primary);
  line-height: 1.6;
  padding: 20px;
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
}

body.dark-mode {
  background: linear-gradient(
    135deg,
    var(--dark-bg-secondary) 0%,
    var(--dark-bg-primary) 100%
  );
  color: var(--dark-text-primary);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
}

/* Background elements */
.background-elements {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.background-element {
  position: absolute;
  border-radius: 50%;
  opacity: 0.05;
}

.element-1 {
  width: 300px;
  height: 300px;
  background: var(--primary);
  top: 10%;
  left: 5%;
  animation: float 15s infinite ease-in-out;
}

.element-2 {
  width: 200px;
  height: 200px;
  background: var(--secondary);
  bottom: 15%;
  right: 10%;
  animation: float 18s infinite ease-in-out reverse;
}

.element-3 {
  width: 150px;
  height: 150px;
  background: var(--accent);
  top: 40%;
  right: 20%;
  animation: float 12s infinite ease-in-out;
}

@keyframes float {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(20px, 20px) rotate(180deg);
  }
  100% {
    transform: translate(0, 0) rotate(360deg);
  }
}

header {
  text-align: center;
  padding: 20px 0;
  margin-bottom: 30px;
  position: relative;
}

h1 {
  font-size: 2.8rem;
  color: var(--dark);
  margin-bottom: 10px;
  background: linear-gradient(45deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}

body.dark-mode h1 {
  background: linear-gradient(45deg, #ff9e7d, #4dc0b5);
  -webkit-background-clip: text;
  background-clip: text;
}

.tagline {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 20px;
}

body.dark-mode .tagline {
  color: var(--dark-text-secondary);
}

.theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 50px;
  height: 50px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: all 0.3s ease;
  box-shadow: var(--shadow);
}

body.dark-mode .theme-toggle {
  background: var(--dark-bg-card);
  border-color: var(--dark-border);
  color: var(--dark-text-primary);
}

.theme-toggle:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
}

.tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 25px;
  flex-wrap: wrap;
  justify-content: center;
}

.tab-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 12px 20px;
  border-radius: 30px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
}

body.dark-mode .tab-btn {
  background: var(--dark-bg-secondary);
  border-color: var(--dark-border);
  color: var(--dark-text-primary);
}

.tab-btn:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

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

.tab-content {
  display: none;
  animation: fadeIn 0.5s ease forwards;
}

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

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

.app-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 25px;
}

@media (max-width: 900px) {
  .app-container {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 25px;
  margin-bottom: 25px;
  transition: all 0.3s ease;
  border: 1px solid var(--border);
}

body.dark-mode .card {
  background: var(--dark-bg-card);
  border-color: var(--dark-border);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

body.dark-mode .card:hover {
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.card-title {
  font-size: 1.5rem;
  color: var(--dark);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
  display: flex;
  align-items: center;
  gap: 10px;
}

body.dark-mode .card-title {
  color: var(--dark-text-primary);
}

.card-title i {
  color: var(--primary);
}

.input-group {
  margin-bottom: 20px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-primary);
}

body.dark-mode label {
  color: var(--dark-text-primary);
}

input,
select,
textarea {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s;
  background: var(--bg-secondary);
  color: var(--text-primary);
}

body.dark-mode input,
body.dark-mode select,
body.dark-mode textarea {
  background: var(--dark-bg-secondary);
  border-color: var(--dark-border);
  color: var(--dark-text-primary);
}

input:focus,
select:focus,
textarea:focus {
  border-color: var(--secondary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(42, 157, 143, 0.2);
}

input[type='checkbox']:focus{
  box-shadow: none;
  border-color: unset;
}

.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 10px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-secondary);
  padding: 10px 15px;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  min-width: 120px;
  justify-content: center;
}

body.dark-mode .checkbox-item {
  background: var(--dark-bg-secondary);
}

.checkbox-item:hover {
  background: #e9ecef;
  transform: translateY(-2px);
}

body.dark-mode .checkbox-item:hover {
  background: #333;
}

.checkbox-item input {
  width: auto;
  transform: scale(1.3);
  margin-right: 5px;
}

.fusion-checkbox {
  width: 100%;
  justify-content: flex-start;
  min-width: auto;
}

.fusion-checkbox input {
  transform: scale(1.5);
  margin-right: 12px;
}

.btn {
  background: var(--primary);
  color: white;
  border: none;
  padding: 14px 25px;
  border-radius: 8px;
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  box-shadow: 0 4px 6px rgba(255, 107, 53, 0.3);
}

.btn:hover {
  background: #e05a2a;
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
  background: var(--secondary);
  box-shadow: 0 4px 6px rgba(42, 157, 143, 0.3);
}

.btn-secondary:hover {
  background: #218574;
  box-shadow: 0 6px 15px rgba(42, 157, 143, 0.4);
}

.btn-accent {
  background: var(--accent);
  color: var(--dark);
  box-shadow: 0 4px 6px rgba(233, 196, 106, 0.3);
}

.btn-accent:hover {
  background: #d4b35a;
  box-shadow: 0 6px 15px rgba(233, 196, 106, 0.4);
}

.btn-block {
  display: block;
  width: 100%;
}

.btn-small {
  padding: 8px 15px;
  font-size: 0.9rem;
}

.ingredient-list {
  list-style: none;
  margin-top: 15px;
}

.ingredient-item {
  display: flex;
  justify-content: space-between;
  padding: 12px 15px;
  background: var(--bg-secondary);
  border-radius: 8px;
  margin-bottom: 10px;
  align-items: center;
  transition: all 0.3s;
}

body.dark-mode .ingredient-item {
  background: var(--dark-bg-secondary);
}

.ingredient-item:hover {
  transform: translateX(5px);
}

.ingredient-item input {
  width: 20px;
  height: 20px;
}

.ingredient-item:last-child {
  margin-bottom: 0;
}

.remove-btn {
  background: none;
  border: none;
  color: #e76f51;
  cursor: pointer;
  font-size: 1.2rem;
  width: auto;
  padding: 0;
  transition: transform 0.2s;
}

.remove-btn:hover {
  transform: scale(1.2);
}

.recipe-card {
  position: relative;
  overflow: hidden;
  display: none;
}

.recipe-header {
  background: linear-gradient(rgba(38, 70, 83, 0.8), rgba(38, 70, 83, 0.9)),
    url("https://images.unsplash.com/photo-1546069901-ba9599a7e63c?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=1200&q=80");
  background-size: cover;
  background-position: center;
  height: 200px;
  border-radius: var(--radius) var(--radius) 0 0;
  display: flex;
  align-items: flex-end;
  padding: 20px;
  color: white;
}

.recipe-title {
  font-size: 1.8rem;
  margin-bottom: 5px;
}

.recipe-meta {
  display: flex;
  gap: 20px;
  font-size: 0.9rem;
  opacity: 0.9;
}

.recipe-content {
  padding: 20px;
}

.fusion-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  background: var(--accent);
  color: var(--dark);
  padding: 8px 15px;
  border-radius: 30px;
  font-weight: bold;
  font-size: 0.9rem;
  box-shadow: var(--shadow);
}

.ingredients-section,
.instructions-section {
  margin-bottom: 25px;
}

.section-title {
  font-size: 1.3rem;
  margin-bottom: 15px;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 10px;
}

body.dark-mode .section-title {
  color: var(--dark-text-primary);
}

.instructions-list {
  list-style: none;
  counter-reset: step-counter;
}

.instruction-step {
  margin-bottom: 15px;
  padding-left: 40px;
  position: relative;
  padding: 15px 15px 15px 50px;
  background: var(--bg-secondary);
  border-radius: 8px;
  transition: all 0.3s;
}

body.dark-mode .instruction-step {
  background: var(--dark-bg-secondary);
}

.instruction-step:hover {
  transform: translateX(5px);
}

.instruction-step:before {
  counter-increment: step-counter;
  content: counter(step-counter);
  position: absolute;
  left: 15px;
  top: 15px;
  background: var(--accent);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: var(--dark);
}

.timer-controls {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}

.timer-btn {
  background: var(--secondary);
  color: white;
  border: none;
  padding: 8px 15px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: all 0.3s;
}

.timer-btn:hover {
  background: #218574;
  transform: translateY(-2px);
}

.timer-display {
  background: var(--bg-secondary);
  padding: 8px 15px;
  border-radius: 6px;
  font-weight: bold;
  min-width: 100px;
  text-align: center;
  border: 1px solid var(--border);
}

body.dark-mode .timer-display {
  background: var(--dark-bg-secondary);
  border-color: var(--dark-border);
}

.social-features {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
  gap: 15px;
}

.rating {
  display: flex;
  gap: 5px;
}

.rating i {
  color: #ddd;
  cursor: pointer;
  transition: all 0.2s;
}

body.dark-mode .rating i {
  color: #555;
}

.rating i.active {
  color: var(--accent);
  transform: scale(1.2);
}

.share-btn {
  background: var(--secondary);
  color: white;
  border: none;
  padding: 8px 15px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.3s;
}

.share-btn:hover {
  background: #218574;
  transform: translateY(-2px);
}

.actions {
  display: flex;
  gap: 10px;
  margin-top: 15px;
  justify-content: flex-end;
}

.export-import {
  display: flex;
  gap: 10px;
  margin-top: 15px;
}

.notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--success);
  color: white;
  padding: 15px 25px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  display: none;
  z-index: 1001;
  animation: slideIn 0.3s ease forwards;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.notification.error {
  background: var(--warning);
}

.meal-plan-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.week-navigation {
  display: flex;
  gap: 10px;
}

.week-navigation button {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  padding: 8px 15px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s;
}

body.dark-mode .week-navigation button {
  background: var(--dark-bg-secondary);
  border-color: var(--dark-border);
  color: var(--dark-text-primary);
}

.week-navigation button:hover {
  background: #e0e0e0;
  transform: translateY(-2px);
}

body.dark-mode .week-navigation button:hover {
  background: #333;
}

.week-title {
  font-size: 1.3rem;
  font-weight: bold;
  color: var(--text-primary);
}

body.dark-mode .week-title {
  color: var(--dark-text-primary);
}

.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-secondary);
}

body.dark-mode .empty-state {
  color: var(--dark-text-secondary);
}

.empty-state i {
  font-size: 3rem;
  margin-bottom: 15px;
  color: #ccc;
}

body.dark-mode .empty-state i {
  color: #555;
}

.empty-state p {
  margin-bottom: 20px;
}

.meal-planner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 15px;
  margin-top: 20px;
}

.day-card {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 15px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  min-height: 120px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border: 1px solid var(--border);
}

body.dark-mode .day-card {
  background: var(--dark-bg-secondary);
  border-color: var(--dark-border);
}

.day-card:hover {
  background: #e9ecef;
  transform: translateY(-5px);
}

body.dark-mode .day-card:hover {
  background: #333;
}

.day-card h3 {
  margin-bottom: 10px;
  color: var(--dark);
}

body.dark-mode .day-card h3 {
  color: var(--dark-text-primary);
}

.day-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 5px;
}

body.dark-mode .day-card p {
  color: var(--dark-text-secondary);
}

.day-card.assigned {
  background: #e8f4f3;
  border: 2px dashed var(--secondary);
}

body.dark-mode .day-card.assigned {
  background: rgba(42, 157, 143, 0.1);
  border-color: var(--secondary);
}

.saved-recipes {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 20px;
}

.saved-recipe-card {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 15px;
  cursor: pointer;
  transition: all 0.3s;
  border: 1px solid var(--border);
}

body.dark-mode .saved-recipe-card {
  background: var(--dark-bg-secondary);
  border-color: var(--dark-border);
}

.saved-recipe-card:hover {
  background: #e9ecef;
  transform: translateY(-5px);
}

body.dark-mode .saved-recipe-card:hover {
  background: #333;
}

.saved-recipe-card h3 {
  margin-bottom: 10px;
  color: var(--dark);
}

body.dark-mode .saved-recipe-card h3 {
  color: var(--dark-text-primary);
}

.saved-recipe-card p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

body.dark-mode .saved-recipe-card p {
  color: var(--dark-text-secondary);
}

.saved-recipe-card .tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 10px 0;
}

.saved-recipe-card .tag {
  background: var(--accent);
  color: var(--dark);
  padding: 3px 8px;
  border-radius: 20px;
  font-size: 0.8rem;
}

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background: var(--bg-card);
  border-radius: var(--radius);
  width: 90%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 25px;
  position: relative;
  border: 1px solid var(--border);
  animation: slideUp 0.3s ease;
}

body.dark-mode .modal-content {
  background: var(--dark-bg-card);
  border-color: var(--dark-border);
}

@keyframes slideUp {
  from {
    transform: translateY(50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.close-modal {
  position: absolute;
  top: 15px;
  right: 15px;
  font-size: 1.5rem;
  cursor: pointer;
  color: #999;
  transition: all 0.2s;
}

.close-modal:hover {
  color: var(--text-primary);
  transform: rotate(90deg);
}

body.dark-mode .close-modal:hover {
  color: var(--dark-text-primary);
}

.loading {
  display: none;
  text-align: center;
  padding: 30px;
}

.spinner {
  border: 4px solid rgba(0, 0, 0, 0.1);
  border-left-color: var(--primary);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin: 0 auto 20px;
}

body.dark-mode .spinner {
  border-left-color: #ff9e7d;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.status-message {
  margin-top: 15px;
  font-style: italic;
  color: var(--secondary);
}

body.dark-mode .status-message {
  color: #4dc0b5;
}

.pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}