/* styles.css */

/* 
==============================================
1. CSS Reset
==============================================
*/
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  scroll-padding-top: 5rem; /* Offset for sticky header */
}

body {
  line-height: 1.6;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  text-wrap: balance;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  list-style: none;
}

/* 
==============================================
2. CSS Variables (Theme)
==============================================
*/
:root {
  --primary-500: #6366F1; /* Indigo */
  --primary-600: #4F46E5; /* Darker Indigo */
  --secondary-500: #10B981; /* Emerald */
  --secondary-600: #059669; /* Darker Emerald */
  
  --text-primary: #111827; /* Gray 900 */
  --text-secondary: #4B5563; /* Gray 600 */
  --text-light: #F9FAFB; /* Gray 50 */
  
  --bg-primary: #FFFFFF; /* White */
  --bg-secondary: #F9FAFB; /* Gray 50 */
  --bg-dark: #1F2937; /* Gray 800 */
  
  --border-color: #E5E7EB; /* Gray 200 */

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
  
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

  --border-radius: 0.5rem;
}

/* 
==============================================
3. Utility Classes
==============================================
*/
.container {
  width: 100%;
  max-width: 1280px; /* Corresponds to Tailwind's xl breakpoint */
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section-padding {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

@media (min-width: 768px) {
  .section-padding {
    padding-top: 6rem;
    padding-bottom: 6rem;
  }
}

/* 
==============================================
4. Global Component Styles
==============================================
*/

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease-in-out;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--primary-500);
  color: var(--text-light);
}

.btn-primary:hover {
  background-color: var(--primary-600);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-secondary);
  border-color: var(--text-secondary);
}

/* Header & Navigation */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
  transition: background-color 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

.site-header.scrolled {
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: var(--shadow-md);
  padding: 0.75rem 0;
}

/* Mobile Menu Button */
.menu-toggle {
  display: none; /* Hidden on desktop */
  background: none;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: 80%;
    height: 100vh;
    background-color: var(--bg-primary);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform 0.3s ease-in-out;
    padding-top: 6rem;
  }

  .main-nav.is-open {
    transform: translateX(0);
  }
  
  body.no-scroll {
    overflow: hidden;
  }
}