/**
 * Main Styles - Dercmerc Innovations
 * Modern, tech-oriented, responsive design
 */

/* ============================================
   CSS Variables & Custom Properties
   ============================================ */
:root {
  /* Colors */
  --color-primary: #0084ff;
  --color-primary-dark: #0066cc;
  --color-primary-light: #e8f5ff;

  --color-secondary: #00d084;
  --color-secondary-dark: #00a86b;
  --color-secondary-light: #e8fff5;

  --color-accent: #ffb800;
  --color-accent-dark: #e6a700;
  --color-accent-light: #fff4e8;

  --color-purple: #9d4edd;
  --color-purple-light: #f5e8ff;

  --color-text: #1a1a1a;
  --color-text-light: #666666;
  --color-text-lighter: #999999;

  --color-bg: #ffffff;
  --color-bg-light: #f8f9fa;
  --color-bg-dark: #0f1419;

  --color-border: #e5e7eb;
  --color-border-light: #f3f4f6;

  /* Typography */
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-heading: "Space Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;

  --font-size-xs: 0.75rem; /* 12px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-base: 1rem; /* 16px */
  --font-size-lg: 1.125rem; /* 18px */
  --font-size-xl: 1.25rem; /* 20px */
  --font-size-2xl: 1.5rem; /* 24px */
  --font-size-3xl: 1.875rem; /* 30px */
  --font-size-4xl: 2.25rem; /* 36px */
  --font-size-5xl: 3rem; /* 48px */
  --font-size-6xl: 3.75rem; /* 60px */

  /* Spacing */
  --spacing-xs: 0.25rem; /* 4px */
  --spacing-sm: 0.5rem; /* 8px */
  --spacing-md: 1rem; /* 16px */
  --spacing-lg: 1.5rem; /* 24px */
  --spacing-xl: 2rem; /* 32px */
  --spacing-2xl: 3rem; /* 48px */
  --spacing-3xl: 4rem; /* 64px */
  --spacing-4xl: 6rem; /* 96px */
  --spacing-5xl: 8rem; /* 128px */

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1),
    0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1),
    0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1),
    0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Border Radius */
  --radius-sm: 0.25rem; /* 4px */
  --radius-md: 0.5rem; /* 8px */
  --radius-lg: 0.75rem; /* 12px */
  --radius-xl: 1rem; /* 16px */
  --radius-2xl: 1.5rem; /* 24px */
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --color-text: #ffffff;
  --color-text-light: #b0b0b0;
  --color-text-lighter: #808080;
  --color-bg: #0f1419;
  --color-bg-light: #1a1f25;
  --color-bg-dark: #000000;
  --color-border: #2a2f35;
  --color-border-light: #1f2427;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  overflow-x: hidden;
}

/* ============================================
   Typography
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: var(--font-size-5xl);
}
h2 {
  font-size: var(--font-size-4xl);
}
h3 {
  font-size: var(--font-size-3xl);
}
h4 {
  font-size: var(--font-size-2xl);
}
h5 {
  font-size: var(--font-size-xl);
}
h6 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

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

a:hover {
  color: var(--color-primary-dark);
}

strong,
b {
  font-weight: 600;
}

/* ============================================
   Layout
   ============================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section-padding {
  padding: var(--spacing-4xl) 0;
}

.bg-light {
  background-color: var(--color-bg-light);
}

.bg-dark {
  background-color: var(--color-bg-dark);
  color: #ffffff;
}

.bg-dark h1,
.bg-dark h2,
.bg-dark h3,
.bg-dark h4,
.bg-dark h5,
.bg-dark h6 {
  color: #ffffff;
}

.bg-dark p {
  color: rgba(255, 255, 255, 0.8);
}

.bg-gradient {
  background: linear-gradient(
    135deg,
    var(--color-primary) 0%,
    var(--color-purple) 100%
  );
  color: #ffffff;
}

/* ============================================
   Skip to Content (Accessibility)
   ============================================ */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-md);
  text-decoration: none;
  z-index: 9999;
}

.skip-to-content:focus {
  top: 0;
}

/* ============================================
   Section Headers
   ============================================ */
.section-header {
  margin-bottom: var(--spacing-3xl);
}

.section-title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  max-width: 600px;
}

.section-header.text-center .section-subtitle {
  margin: 0 auto;
}

/* ============================================
   Text Utilities
   ============================================ */
.text-center {
  text-align: center;
}
.text-left {
  text-align: left;
}
.text-right {
  text-align: right;
}

.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-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);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp 0.6s ease-out forwards;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* ============================================
   Loading State
   ============================================ */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* ============================================
   Image Styles
   ============================================ */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

.image-placeholder {
  background: var(--color-bg-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

/* ============================================
   Responsive Typography
   ============================================ */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  h1 {
    font-size: var(--font-size-4xl);
  }
  h2 {
    font-size: var(--font-size-3xl);
  }
  h3 {
    font-size: var(--font-size-2xl);
  }

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

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}