/* ===========================
   VARIABLES & COLOR PALETTE
   =========================== */
:root {
  /* Modern Yoga-themed Color Palette (2026) */
  --primary-green: #1b4332;      /* Deep rich green */
  --secondary-green: #2d6a4f;    /* Balanced green */
  --accent-green: #52b788;       /* Vibrant accent */
  --light-green: #d8f3dc;        /* Soft background */
  --sage: #a8dadc;               /* Modern sage */
  
  --earth-brown: #9b8b6f;        /* Refined earth tone */
  --cream: #fafbf8;              /* Premium off-white */
  --white: #ffffff;
  --dark-text: #0a0e27;
  --text-secondary: #6b7280;
  --background: #f5f7f6;
  
  /* Typography - Modern 2026 Stack */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
  --font-secondary: 'Georgia', 'Garamond', serif;
  --font-mono: 'Fira Code', 'Courier New', monospace;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  --spacing-3xl: 5rem;
  
  /* Border Radius - Modern */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.5rem;
  --radius-xl: 2rem;
  
  /* Shadows - 2026 Depth */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
  
  /* Glass Effect */
  --glass: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.2);
  
  /* Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  color: var(--dark-text);
  background-color: var(--background);
  background-image: 
    radial-gradient(at 20% 50%, rgba(45, 106, 79, 0.03) 0px, transparent 50px),
    radial-gradient(at 80% 80%, rgba(82, 183, 136, 0.02) 0px, transparent 50px);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ===========================
   TYPOGRAPHY
   =========================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-secondary);
  color: var(--primary-green);
  margin-bottom: var(--spacing-md);
  font-weight: 600;
  letter-spacing: -0.5px;
}

h1 {
  font-size: 3.5rem;
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: -1px;
}

h2 {
  font-size: 2.5rem;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.75px;
}

h3 {
  font-size: 1.875rem;
  line-height: 1.3;
  font-weight: 600;
}

h4 {
  font-size: 1.375rem;
  font-weight: 600;
}

h5 {
  font-size: 1.125rem;
  font-weight: 600;
}

h6 {
  font-size: 1rem;
  font-weight: 600;
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
  line-height: 1.75;
}

a {
  color: var(--secondary-green);
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
}

a:hover {
  color: var(--accent-green);
}

/* ===========================
   UTILITY CLASSES
   =========================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

.text-center {
  text-align: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  background: linear-gradient(135deg, var(--secondary-green) 0%, var(--accent-green) 100%);
  color: var(--white);
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.3px;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px rgba(45, 106, 79, 0.3);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(45, 106, 79, 0.4);
}

.btn:active {
  transform: translateY(-1px);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--earth-brown) 0%, #a89170 100%);
  box-shadow: 0 4px 15px rgba(155, 139, 111, 0.3);
}

.btn-secondary:hover {
  box-shadow: 0 8px 25px rgba(155, 139, 111, 0.4);
}

.btn-outline {
  background-color: transparent;
  color: var(--secondary-green);
  border: 2px solid var(--secondary-green);
  box-shadow: none;
}

.btn-outline:hover {
  background-color: var(--light-green);
  border-color: var(--accent-green);
  color: var(--primary-green);
}

/* ===========================
   RESPONSIVE GRID
   =========================== */
.grid {
  display: grid;
  gap: var(--spacing-lg);
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ===========================
   HERO SECTION
   =========================== */
.hero {
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 50%, var(--accent-green) 100%);
  background-attachment: fixed;
  color: var(--white);
  padding: 7rem var(--spacing-md);
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 650px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 80%, rgba(0, 0, 0, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  max-width: 900px;
  position: relative;
  z-index: 2;
}

.hero h1 {
  color: var(--white);
  font-size: 4rem;
  margin-bottom: var(--spacing-lg);
  font-weight: 700;
  letter-spacing: -1.5px;
  animation: fadeInUp 0.8s ease-out;
}

.hero p {
  font-size: 1.3rem;
  margin-bottom: var(--spacing-xl);
  color: rgba(255, 255, 255, 0.95);
  line-height: 1.8;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero .btn {
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

/* ===========================
   CARDS
   =========================== */
.card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  overflow: hidden;
  border: 1px solid rgba(45, 106, 79, 0.06);
  position: relative;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--secondary-green), var(--accent-green));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--sage);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-image {
  width: 100%;
  height: 250px;
  background: linear-gradient(135deg, var(--light-green) 0%, var(--sage) 100%);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--secondary-green);
  font-size: 0.95rem;
  text-align: center;
  padding: var(--spacing-md);
  font-weight: 500;
  transition: all var(--transition-normal);
}

.card h3 {
  margin-bottom: var(--spacing-md);
}

.card p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

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

label {
  display: block;
  margin-bottom: var(--spacing-sm);
  color: var(--primary-green);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.2px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid #e5e7eb;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  transition: all var(--transition-fast);
  background-color: var(--white);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--secondary-green);
  box-shadow: 0 0 0 4px rgba(45, 106, 79, 0.1);
  background-color: rgba(216, 243, 220, 0.3);
}

textarea {
  resize: vertical;
  min-height: 140px;
  font-family: var(--font-primary);
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%232d6a4f' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.error {
  color: #dc2626;
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
  display: none;
  font-weight: 500;
}

.form-group.has-error input,
.form-group.has-error textarea,
.form-group.has-error select {
  border-color: #dc2626;
  background-color: rgba(220, 38, 38, 0.05);
}

.form-group.has-error .error {
  display: block;
}

.file-upload {
  position: relative;
  display: inline-block;
  width: 100%;
}

.file-upload input[type="file"] {
  display: none;
}

.file-upload-label {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 2rem;
  border: 2px dashed var(--secondary-green);
  border-radius: var(--radius-lg);
  background-color: var(--light-green);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--secondary-green);
  font-weight: 600;
}

.file-upload-label:hover {
  border-color: var(--accent-green);
  background-color: rgba(82, 183, 136, 0.1);
}

#file-preview {
  margin-top: var(--spacing-lg);
  display: none;
}

#file-preview img {
  max-width: 300px;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.file-info {
  color: #666;
  font-size: 0.875rem;
  margin-top: var(--spacing-sm);
}

/* Footer */
footer {
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--secondary-green) 100%);
  color: var(--white);
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

footer p {
  margin-bottom: var(--spacing-sm);
  color: rgba(255, 255, 255, 0.9);
}

footer a {
  color: var(--sage);
  font-weight: 600;
}

footer a:hover {
  color: var(--white);
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */
@media (max-width: 1024px) {
  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 1.875rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  .hero {
    padding: 4rem var(--spacing-md);
    min-height: 450px;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.1rem;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 0 var(--spacing-sm);
  }

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

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  .hero {
    padding: 3rem var(--spacing-sm);
    min-height: 350px;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .hero p {
    font-size: 0.95rem;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.9rem;
  }

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