/* ==========================================================================
   عين الرافدين | Ain Al-Rafidain - Base Styles & RTL Reset
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  direction: rtl;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text-dark-primary);
  background-color: var(--color-white);
  direction: rtl;
  text-align: right;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Selection */
::selection {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-dark-surface-0);
}

::-webkit-scrollbar-thumb {
  background: var(--color-dark-surface-3);
  border: 2px solid var(--color-dark-surface-0);
  border-radius: var(--radius-xs);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* Typography Defaults */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: inherit;
  letter-spacing: -0.015em;
}

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-sm);
}

p:last-child {
  margin-bottom: 0;
}

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

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

ul, ol {
  list-style: none;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
  border: none;
  background: none;
}

button {
  cursor: pointer;
}

/* Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.container-wide {
  width: 100%;
  max-width: var(--container-wide-width);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.container-fluid {
  width: 100%;
  padding-inline: var(--container-padding);
}

/* Section Foundation Classes */
.section {
  position: relative;
  padding-block: clamp(4rem, 8vw, 7.5rem);
  overflow: hidden;
}

.section-dark {
  background-color: var(--color-dark-surface-1);
  color: var(--color-text-light-primary);
}

.section-black {
  background-color: var(--color-black);
  color: var(--color-text-light-primary);
}

.section-light {
  background-color: var(--color-light-surface-0);
  color: var(--color-text-dark-primary);
}

.section-white {
  background-color: var(--color-white);
  color: var(--color-text-dark-primary);
}

/* Architectural Grid & Ambient Patterns */
.bg-grid-pattern {
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.bg-grid-pattern-light {
  background-image: 
    linear-gradient(to right, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
}

.ambient-glow-green {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-primary-glow) 0%, rgba(12, 130, 62, 0) 70%);
  pointer-events: none;
  filter: blur(80px);
  z-index: 0;
}

/* Accessibility Focus Ring */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Visually Hidden Utility for Screen Readers */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}