/* Starbucks Calorie Calculator - Global Styles */

/* ===== CSS RESET & BASE ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Starbucks Brand Colors */
  --starbucks-green: #00704A;
  --warm-gold: #D4A574;
  --coffee-brown: #8B4513;
  --cream-white: #F7F7F7;
  --dark-forest: #1E3932;
  --energetic-orange: #FF6B35;
  
  /* Functional Colors */
  --light-gray: #FAFAFA;
  --neutral-gray: #E5E5E5;
  --success-bg: rgba(0, 112, 74, 0.2);
  --warning-bg: rgba(255, 107, 53, 0.15);
  
  /* Typography */
  --font-primary: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Lato', sans-serif;
  
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(30, 57, 50, 0.08);
  --shadow-md: 0 4px 8px rgba(30, 57, 50, 0.12);
  --shadow-lg: 0 8px 16px rgba(30, 57, 50, 0.16);
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease-out;
  --transition-slow: 0.3s ease;
}

html {
  scroll-behavior: smooth;
}

.footer-content {
    text-align: center;
    margin-bottom: 10px;
  }

  .footer-content img {
    width: 200px;
    border-radius: 8px;
    transition: transform 0.2s ease-in-out;
  }

  .footer-content img:hover {
    transform: scale(1.1);
  }

body {
  font-family: var(--font-primary);
  background-color: var(--cream-white);
  color: var(--dark-forest);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--dark-forest);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 1.875rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--dark-forest);
}

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

a:hover {
  color: var(--coffee-brown);
}

/* ===== NAVIGATION BAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-base);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--starbucks-green);
}

.nav-logo img {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
  align-items: center;
}

.nav-menu a {
  font-weight: 500;
  font-size: 0.9375rem;
  color: var(--dark-forest);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-menu a:hover {
  background-color: var(--success-bg);
  color: var(--starbucks-green);
}

.nav-menu a.active {
  color: var(--starbucks-green);
}

.nav-menu a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background-color: var(--starbucks-green);
  border-radius: 2px;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--dark-forest);
  cursor: pointer;
  padding: var(--spacing-sm);
}

@media (max-width: 768px) {
  .nav-container {
    height: 64px;
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    transition: transform var(--transition-slow);
  }
  
  .nav-menu.active {
    transform: translateY(0);
  }
  
  .nav-menu a.active::after {
    display: none;
  }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 12px var(--spacing-xl);
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-primary);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--starbucks-green);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: #005a3a;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
  color: white;
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: white;
  color: var(--starbucks-green);
  border: 2px solid var(--starbucks-green);
}

.btn-secondary:hover {
  background-color: var(--success-bg);
  color: var(--starbucks-green);
}

.btn-accent {
  background-color: var(--warm-gold);
  color: white;
}

.btn-accent:hover {
  background-color: #c49964;
  color: white;
}

.btn-large {
  padding: 14px var(--spacing-2xl);
  font-size: 1.125rem;
}

.btn-icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: var(--radius-full);
}

/* ===== CARDS ===== */
.card {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-image {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.card-content {
  padding: var(--spacing-lg);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--dark-forest);
}

.card-text {
  font-size: 0.875rem;
  color: var(--coffee-brown);
  margin-bottom: var(--spacing-md);
}

/* ===== BADGES ===== */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-calorie {
  background-color: var(--energetic-orange);
  color: white;
  min-width: 60px;
  height: 60px;
  border-radius: 50%;
  font-size: 1.125rem;
  flex-direction: column;
  gap: 2px;
}

.badge-calorie-large {
  min-width: 80px;
  height: 80px;
  font-size: 1.5rem;
}

.badge-category {
  background-color: var(--warm-gold);
  color: white;
}

.badge-success {
  background-color: var(--success-bg);
  color: var(--starbucks-green);
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--dark-forest);
  font-size: 0.9375rem;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px var(--spacing-md);
  font-size: 1rem;
  font-family: var(--font-primary);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-sm);
  background-color: white;
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--starbucks-green);
  box-shadow: 0 0 0 3px var(--success-bg);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* ===== CONTAINER & LAYOUT ===== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* ===== HERO SECTION ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  background: linear-gradient(135deg, var(--cream-white) 0%, #fffef9 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(212, 165, 116, 0.1) 0%, transparent 70%);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(5deg); }
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  animation: slideInLeft 0.8s ease-out;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  color: var(--dark-forest);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--coffee-brown);
  margin-bottom: var(--spacing-xl);
  line-height: 1.6;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero-image {
  animation: slideInRight 0.8s ease-out;
  text-align: center;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-image img {
  max-width: 100%;
  height: auto;
  animation: bobbing 3s ease-in-out infinite;
}

@keyframes bobbing {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-15px); }
}

@media (max-width: 968px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-buttons {
    justify-content: center;
  }
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--dark-forest);
  color: rgba(255, 255, 255, 0.9);
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  border-top: 4px solid var(--warm-gold);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
  color: white;
  margin-bottom: var(--spacing-md);
  font-size: 1.125rem;
}

.footer-section p,
.footer-section a {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.9375rem;
  display: block;
  margin-bottom: var(--spacing-sm);
}

.footer-section a:hover {
  color: var(--warm-gold);
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ===== LOADING SPINNER ===== */
.spinner {
  display: inline-block;
  width: 40px;
  height: 40px;
  border: 4px solid var(--neutral-gray);
  border-top-color: var(--starbucks-green);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  padding: var(--spacing-2xl);
  text-align: center;
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-muted { color: var(--coffee-brown); }
.text-small { font-size: 0.875rem; }
.text-large { font-size: 1.125rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.hidden { display: none !important; }
.visible { display: block !important; }

/* ===== ANIMATIONS ===== */
.fade-in {
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.slide-up {
  animation: slideUp 0.5s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}