/* Main Stylesheet - Receptionist Portfolio */

/* ============================================
   CSS Custom Properties
   ============================================ */
:root {
  /* Color Scheme */
  --primary-color: #2563eb;
  --primary-dark: #1e40af;
  --secondary-color: #64748b;
  --accent-color: #f59e0b;
  --accent-hover: #d97706;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --background: #ffffff;
  --background-alt: #f8fafc;
  --border-color: #e2e8f0;
  --success: #10b981;
  --error: #ef4444;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Poppins', var(--font-primary);
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Layout */
  --max-width: 1200px;
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 12px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
  --transition: 0.3s ease;
}

/* ============================================
   Skip Link (accessibility)
   ============================================ */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--spacing-md);
  z-index: 10000;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--primary-color);
  color: var(--background);
  font-weight: 600;
  border-radius: var(--border-radius-sm);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: var(--spacing-md);
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* ============================================
   Base Styles
   ============================================ */
html {
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background-color: var(--background);
  line-height: var(--line-height-normal);
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  line-height: var(--line-height-tight);
}

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

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

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

button {
  cursor: pointer;
}

/* ============================================
   Header Styles
   ============================================ */
.site-header {
  position: sticky;
  top: 0;
  background-color: var(--background);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-md) var(--spacing-lg);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-md);
  font-family: var(--font-heading);
  color: var(--primary-color);
  transition: opacity var(--transition);
  text-decoration: none;
}

.logo:hover {
  opacity: 0.9;
}

.logo-img {
  display: block;
  width: 80px;
  height: 80px;
  object-fit: contain;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.logo-name {
  font-size: var(--font-size-xl);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

.logo-tagline {
  font-size: var(--font-size-sm);
  font-weight: 500;
  line-height: 1.2;
  color: var(--text-secondary);
  font-family: var(--font-primary);
}

/* ============================================
   Navigation Styles
   ============================================ */
.main-nav {
  flex: 1;
  display: flex;
  justify-content: flex-end;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.nav-link {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-primary);
  border-radius: var(--border-radius-sm);
  transition: color var(--transition), background-color var(--transition);
}

.nav-link:hover {
  color: var(--primary-color);
  background-color: var(--background-alt);
}

.nav-link.active {
  color: var(--accent-color);
  font-weight: 600;
  background-color: var(--background-alt);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* Language toggle – compact, at end of nav */
.lang-toggle-item {
  display: flex;
  align-items: center;
  margin-inline-start: var(--spacing-sm);
  padding-inline-start: var(--spacing-sm);
  border-inline-start: 1px solid var(--border-color);
}

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.15rem;
}

.lang-btn {
  padding: 0.2rem 0.4rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: color var(--transition);
}

.lang-btn:hover {
  color: var(--primary-color);
}

.lang-btn.lang-active {
  color: var(--accent-color);
  font-weight: 600;
}

.lang-sep {
  color: var(--border-color);
  font-size: 0.75rem;
  font-weight: 400;
  user-select: none;
}

/* Hamburger button (hidden on desktop, for mobile prep) */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  padding: var(--spacing-sm);
  width: 44px;
  height: 44px;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 1px;
  transition: var(--transition);
}

/* ============================================
   Footer Styles
   ============================================ */
.site-footer {
  background-color: var(--background-alt);
  padding: var(--spacing-2xl) var(--spacing-lg);
  border-top: 1px solid var(--border-color);
}

.footer-container {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--spacing-xl);
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-column {
  text-align: center;
}

.footer-copyright .copyright-text {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.footer-social .social-links,
.footer-quick-links .quick-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  align-items: center;
}

.social-link,
.quick-link {
  color: var(--text-secondary);
  transition: color var(--transition);
}

.social-link:hover,
.quick-link:hover {
  color: var(--primary-color);
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

.section {
  padding-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
}

.text-center {
  text-align: center;
}

.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius);
  font-weight: 500;
  transition: background-color var(--transition), color var(--transition);
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--background);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--background);
}

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

/* ============================================
   RTL (Arabic) support
   ============================================ */
[dir="rtl"] {
  text-align: right;
}

[dir="rtl"] .header-container,
[dir="rtl"] .footer-container,
[dir="rtl"] .container {
  text-align: right;
}

[dir="rtl"] .text-center {
  text-align: center;
}

[dir="rtl"] .page-header,
[dir="rtl"] .page-header .container,
[dir="rtl"] .page-title,
[dir="rtl"] .section-title {
  text-align: center;
}

[dir="rtl"] .footer-column {
  text-align: center;
}

/* ============================================
   Browser Fallbacks & Compatibility
   ============================================
   - CSS custom properties: supported in all modern browsers (IE11 no).
   - scroll-behavior: smooth (reset.css): unsupported browsers ignore it.
   - scroll-padding-top: fallback for older browsers that don't support it.
   - Focus: reset.css uses :focus-visible for outline; ensure keyboard focus
     remains visible. Skip-link and interactive elements use transition/outline.
   ============================================ */
@supports not (scroll-padding-top: 80px) {
  html {
    scroll-padding-top: 0;
  }
}