/**
 * 02 - Base Styles — Premium Reset & Typography
 * @package Stratos_One_Portfolio
 * 
 * Source: robert-portfolio/assets/css/bundle.css (lines 131-250)
 * Purpose: CSS reset, base typography, global styles
 */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 17px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
  letter-spacing: -0.01em;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-base);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  color: var(--color-text-primary);
}

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

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

ul, ol {
  list-style: none;
}

img, svg {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
}

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

::selection {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent-hover);
}

/* Focus outline */
:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--color-border-strong);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-faint);
}

/* Container */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* Section spacing */
section {
  padding-top: var(--spacing-4xl);
  padding-bottom: var(--spacing-4xl);
}

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

.section-header.centered {
  text-align: center;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-widest);
  text-transform: uppercase;
  color: var(--color-accent-primary);
  margin-bottom: var(--spacing-sm);
}

.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 1px;
  background: var(--color-accent-primary);
}

.section-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-text-primary);
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-snug);
}

.section-subtitle {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: var(--container-content);
  margin-top: var(--spacing-sm);
}

.section-header.centered .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* Body gradient overlay */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.07) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* Ensure sections are above the gradient */
.site-header, main, footer {
  position: relative;
  z-index: 1;
}