/**
 * Nick's Software - Global CSS
 * Contains: CSS variables, resets, base typography, containers
 */

/* ===== CSS Variables ===== */
:root {
  /* Colors */
  --primary: #0f172a;
  --primary-light: #1e293b;
  --secondary: #1e40af;
  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --accent-bright: #38bdf8;
  --accent-dark: #2563eb;

  /* Backgrounds */
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --bg-dark: #0f172a;
  --surface: #f8fafc;
  --surface-dark: #1e293b;

  /* Text */
  --text: #1e293b;
  --text-dark: #1e293b;
  --text-medium: #475569;
  --text-light: #64748b;
  --text-inverse: #f1f5f9;

  /* Status Colors */
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;

  /* Category Colors */
  --manufacturing: #059669;
  --healthcare: #7c3aed;
  --business: #d97706;
  --iot: #0ea5e9;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #1e40af 0%, #3b82f6 50%, #0ea5e9 100%);
  --gradient-dark: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  --gradient-manufacturing: linear-gradient(135deg, #059669 0%, #10b981 100%);
  --gradient-healthcare: linear-gradient(135deg, #7c3aed 0%, #a78bfa 100%);
  --gradient-business: linear-gradient(135deg, #92400e 0%, #d97706 50%, #f59e0b 100%);

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);

  /* Spacing & Layout */
  --section-padding: 100px;
  --container-max: 1200px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 100px;
}

/* ===== Reset ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-y: scroll;
}

body {
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--bg-white);
}

/* ===== Typography ===== */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

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

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--primary);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
  margin-bottom: 1rem;
}

/* ===== Layout ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 5%;
}

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-label {
  display: inline-block;
  background: rgba(59, 130, 246, 0.1);
  color: var(--accent);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

/* ===== Text Utilities ===== */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  :root {
    --section-padding: 60px;
  }
}