/* ==========================================================================
   Orlando Landing Page - Main Stylesheet
   BEM Methodology | Vanilla CSS3 | Accessibility First | Performance Optimized
   ========================================================================== */

/* ==========================================================================
   Theme Variables & Color System
   ========================================================================== */

:root {
  /* Color Palette - Authentic Italian Mediterranean */
  --color-terracotta: #c65d07;           /* Rich Italian terracotta */
  --color-terracotta-light: #e07b39;     /* Lighter terracotta */
  --color-olive-green: #6a7c3a;          /* Italian olive green */
  --color-olive-dark: #546330;           /* Darker olive */
  --color-tuscan-gold: #d4af37;          /* Tuscan gold */
  --color-venetian-red: #c8102e;         /* Venetian red */
  --color-mediterranean-blue: #0077be;    /* Mediterranean blue */
  --color-cream: #faf6f2;                /* Italian cream */
  --color-sage: #9caf88;                 /* Sage green */
  
  /* Semantic Color System - Italian Theme */
  --color-primary: var(--color-terracotta);
  --color-primary-light: var(--color-terracotta-light);
  --color-primary-dark: var(--color-olive-dark);
  --color-secondary: var(--color-tuscan-gold);
  --color-accent: var(--color-venetian-red);
  
  /* Background Colors */
  --color-background: var(--color-cream);
  --color-background-soft: #f5f0e8;
  --color-surface: #ffffff;
  --color-surface-raised: #ffffff;
  --color-overlay: rgba(250, 246, 242, 0.95);
  
  /* Text Colors */
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #4a5568;
  --color-text-muted: #718096;
  --color-text-inverse: #ffffff;
  
  /* Border & Divider Colors */
  --color-border: #e2e8f0;
  --color-border-light: #f1f5f9;
  --color-divider: #e2e8f0;
  
  /* Status Colors */
  --color-success: #48bb78;
  --color-warning: #ed8936;
  --color-error: #f56565;
  --color-info: var(--color-primary-light);
  
  /* Gradient Definitions - Italian Inspired */
  --gradient-primary: linear-gradient(135deg, var(--color-terracotta) 0%, var(--color-terracotta-light) 50%, var(--color-tuscan-gold) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--color-venetian-red) 0%, var(--color-tuscan-gold) 100%);
  --gradient-hero: linear-gradient(135deg, var(--color-olive-dark) 0%, var(--color-olive-green) 25%, var(--color-terracotta) 50%, var(--color-terracotta-light) 75%, var(--color-tuscan-gold) 100%);
  --gradient-subtle: linear-gradient(135deg, var(--color-background-soft) 0%, var(--color-surface) 100%);
  --gradient-tuscan-sunset: linear-gradient(135deg, var(--color-terracotta) 0%, var(--color-venetian-red) 50%, var(--color-tuscan-gold) 100%);
  
  /* Typography Scale */
  --font-family-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-heading: var(--font-family-primary);
  --font-family-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  
  --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 */
  
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Spacing Scale */
  --spacing-xs: 0.5rem;    /* 8px */
  --spacing-sm: 0.75rem;   /* 12px */
  --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 */
  
  /* Layout Dimensions */
  --container-max-width: 1200px;
  --container-padding: var(--spacing-lg);
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  --border-radius-2xl: 1.5rem;
  --border-radius-full: 9999px;
  
  /* 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);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Dark Theme Variables - Italian Night */
[data-theme="dark"] {
  /* Dark Theme Color Overrides - Inspired by Italian nights */
  --color-background: #1a1612;              /* Dark olive brown */
  --color-background-soft: #252117;         /* Darker warm brown */
  --color-surface: #2f2a1f;                 /* Rich dark brown */
  --color-surface-raised: #3a342a;          /* Elevated brown */
  --color-overlay: rgba(26, 22, 18, 0.95);
  
  --color-text-primary: #faf6f2;            /* Cream text */
  --color-text-secondary: #d4c4a8;          /* Warm beige */
  --color-text-muted: #a89983;              /* Muted warm */
  --color-text-inverse: #1a1612;
  
  --color-border: #4a4035;                  /* Dark warm border */
  --color-border-light: #5a5045;            /* Lighter warm border */
  --color-divider: #4a4035;
  
  /* Enhanced gradients for dark theme - Italian night sky */
  --gradient-hero: linear-gradient(135deg, #1a1612 0%, var(--color-olive-dark) 25%, var(--color-terracotta) 50%, var(--color-terracotta-light) 75%, var(--color-tuscan-gold) 100%);
  --gradient-subtle: linear-gradient(135deg, var(--color-background-soft) 0%, var(--color-surface) 100%);
  
  /* Adjusted shadows for dark theme */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7), 0 10px 10px -5px rgba(0, 0, 0, 0.5);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
}

/* ==========================================================================
   Base Styles & Reset
   ========================================================================== */

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

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Focus Management */
:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Selection Styles */
::selection {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

::-moz-selection {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

/* ==========================================================================
   Typography
   ========================================================================== */

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

h1 {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
}

h2 {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
}

h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
}

h4 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
}

h5 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
}

h6 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

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

a:hover,
a:focus {
  color: var(--color-primary-light);
  text-decoration: underline;
}

strong,
b {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

/* ==========================================================================
   Layout Components
   ========================================================================== */

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

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.section-header__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: var(--spacing-lg);
}

.section-header__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   Button Component
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  text-decoration: none;
  border: none;
  border-radius: var(--border-radius-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  min-height: 48px; /* Accessibility - minimum touch target */
}

.btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.btn--primary {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-md);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  text-decoration: none;
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn--full {
  width: 100%;
}

.btn__loading {
  display: none;
}

.btn--loading .btn__text {
  display: none;
}

.btn--loading .btn__loading {
  display: inline;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--color-overlay);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-light);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
}

.nav {
  padding: var(--spacing-md) 0;
}

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

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
}

.nav__logo {
  font-size: var(--font-size-2xl);
}

.nav__menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
  margin: 0;
  padding: 0;
}

.nav__link {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  position: relative;
}

.nav__link:hover,
.nav__link:focus {
  color: var(--color-primary);
  background-color: var(--color-surface);
  text-decoration: none;
}

.nav__link--active {
  color: var(--color-primary);
  background-color: var(--color-surface);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background-color: var(--color-primary);
  border-radius: var(--border-radius-full);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}

.nav__toggle-icon {
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: all var(--transition-fast);
  border-radius: 1px;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-icon:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: none;
  padding: var(--spacing-sm);
  cursor: pointer;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
  font-size: var(--font-size-lg);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background-color: var(--color-surface);
  transform: rotate(15deg);
}

.theme-toggle__icon {
  transition: transform var(--transition-normal);
}

.theme-toggle__icon::before {
  content: '🌙';
}

[data-theme="dark"] .theme-toggle__icon {
  transform: rotate(180deg);
}

[data-theme="dark"] .theme-toggle__icon::before {
  content: '☀️';
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
  padding: calc(80px + var(--spacing-4xl)) 0 var(--spacing-5xl);
  background: var(--gradient-hero);
  background-size: 400% 400%;
  animation: gradientShift 20s ease infinite;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 70% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

@keyframes gradientShift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.hero__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
  min-height: 500px;
}

.hero__content {
  position: relative;
  z-index: 2;
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-inverse);
  margin-bottom: var(--spacing-lg);
}

.hero__name {
  background: var(--gradient-tuscan-sunset);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  position: relative;
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--spacing-lg);
  font-weight: var(--font-weight-medium);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-3xl);
  max-width: 500px;
}

.hero__stats {
  display: flex;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.stat {
  text-align: center;
}

.stat__number {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-inverse);
  line-height: 1;
}

.stat__label {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
  margin-top: var(--spacing-xs);
}

.hero__actions {
  display: flex;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero__avatar {
  position: relative;
}

.avatar {
  text-align: center;
}

.avatar__image {
  font-size: 120px;
  line-height: 1;
  margin-bottom: var(--spacing-lg);
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.2));
}

.avatar__status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  color: rgba(255, 255, 255, 0.9);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.status-indicator {
  width: 8px;
  height: 8px;
  border-radius: var(--border-radius-full);
  background-color: var(--color-success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* ==========================================================================
   About Section
   ========================================================================== */

.about {
  padding: var(--spacing-5xl) 0;
  background: var(--gradient-subtle);
}

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

.about__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  margin-top: var(--spacing-2xl);
}

.about__heading {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.about__text {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.principles-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.principles-list__item {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background-color: var(--color-surface);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--spacing-lg);
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
}

.principles-list__item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary);
}

.principles-list__icon {
  font-size: var(--font-size-2xl);
  flex-shrink: 0;
}

.principles-list__content strong {
  display: block;
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.principles-list__content p {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: var(--font-size-base);
}

/* ==========================================================================
   Expertise Section
   ========================================================================== */

.expertise {
  padding: var(--spacing-5xl) 0;
  background-color: var(--color-background);
}

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

.expertise__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-2xl);
}

.skill-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-normal);
}

.skill-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary-light);
}

.skill-card:hover::before {
  transform: scaleX(1);
}

.skill-card__icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
  display: block;
}

.skill-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.skill-card__level {
  margin-bottom: var(--spacing-lg);
}

.skill-level {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--border-radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.skill-level--expert {
  background: var(--gradient-secondary);
  color: var(--color-text-inverse);
}

.skill-card__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-lg);
}

.skill-card__features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.skill-card__features li {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) 0;
  position: relative;
  padding-left: var(--spacing-lg);
}

.skill-card__features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: var(--font-weight-bold);
}

/* ==========================================================================
   Philosophy Section
   ========================================================================== */

.philosophy {
  padding: var(--spacing-5xl) 0;
  background: var(--gradient-subtle);
}

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

.philosophy__content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-4xl);
  margin-top: var(--spacing-2xl);
}

.philosophy__main {
  display: grid;
  gap: var(--spacing-2xl);
}

.philosophy-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl);
  transition: all var(--transition-normal);
}

.philosophy-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.philosophy-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.philosophy-card__text {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.philosophy__aside {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.quote-card {
  background: var(--gradient-primary);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  color: var(--color-text-inverse);
}

.quote-card__quote {
  font-size: var(--font-size-lg);
  font-style: italic;
  line-height: var(--line-height-relaxed);
  margin: 0 0 var(--spacing-lg) 0;
}

.quote-card__author {
  font-weight: var(--font-weight-semibold);
  font-style: normal;
}

.stats-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
}

.stats-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.stats-card__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

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

.stat-item__value {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
}

.stat-item__label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ==========================================================================
   Getting Started Section
   ========================================================================== */

.getting-started {
  padding: var(--spacing-5xl) 0;
  background: var(--gradient-subtle);
}

.getting-started__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.getting-started__content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-4xl);
  margin-top: var(--spacing-2xl);
}

.getting-started__steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

/* Step Cards */
.step-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
  display: flex;
  gap: var(--spacing-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.step-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-primary);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-normal);
}

.step-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary-light);
}

.step-card:hover::before {
  transform: scaleY(1);
}

.step-card__number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  margin-top: var(--spacing-xs);
}

.step-card__content {
  flex: 1;
}

.step-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.step-card__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-lg);
}

.step-card__note {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--color-background-soft);
  border-radius: var(--border-radius-md);
  border-left: 3px solid var(--color-primary);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.step-card__note-icon {
  flex-shrink: 0;
  font-size: var(--font-size-base);
}

.step-card__note code {
  background-color: var(--color-surface);
  padding: 2px 6px;
  border-radius: var(--border-radius-sm);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xs);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
}

/* Code Blocks */
.code-block {
  margin: var(--spacing-lg) 0;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background-color: var(--color-surface-raised);
}

.code-block__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-background-soft);
  border-bottom: 1px solid var(--color-border);
}

.code-block__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.code-block__copy {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  font-size: var(--font-size-sm);
}

.code-block__copy:hover {
  background-color: var(--color-border-light);
}

.code-block__content {
  margin: 0;
  padding: var(--spacing-lg);
  background-color: var(--color-surface);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-primary);
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.code-block__content code {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  padding: 0;
  border: none;
}

/* Prompt Examples */
.prompt-examples {
  margin-top: var(--spacing-lg);
}

.prompt-example {
  margin-bottom: var(--spacing-lg);
}

.prompt-example__label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.prompt-example__text {
  padding: var(--spacing-lg);
  background-color: var(--color-background-soft);
  border-radius: var(--border-radius-md);
  border-left: 3px solid var(--color-primary);
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

.prompt-example__response {
  padding: var(--spacing-lg);
  background: var(--gradient-primary);
  border-radius: var(--border-radius-md);
  color: var(--color-text-inverse);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  margin-top: var(--spacing-md);
}

/* Benefits Sidebar */
.getting-started__benefits {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.benefits-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
  transition: all var(--transition-normal);
}

.benefits-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.benefits-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.benefits-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.benefits-list__item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border-light);
}

.benefits-list__item:last-child {
  border-bottom: none;
}

.benefits-list__icon {
  font-size: var(--font-size-lg);
  flex-shrink: 0;
  margin-top: var(--spacing-xs);
}

.benefits-list__content strong {
  display: block;
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.benefits-list__content p {
  color: var(--color-text-secondary);
  margin: 0;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
}

/* Workflow Card */
.workflow-card {
  background: var(--gradient-primary);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  color: var(--color-text-inverse);
}

.workflow-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-lg);
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
}

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

.workflow-step__number {
  display: block;
  width: 32px;
  height: 32px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  margin: 0 auto var(--spacing-sm);
}

.workflow-step__text {
  font-size: var(--font-size-xs);
  opacity: 0.9;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact {
  padding: var(--spacing-5xl) 0;
  background-color: var(--color-background);
}

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

.contact__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  margin-top: var(--spacing-2xl);
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.contact-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl);
  transition: all var(--transition-normal);
}

.contact-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-light);
}

.contact-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.contact-card__text {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.contact-card__list {
  list-style: none;
  padding: 0;
  margin: 0;
  color: var(--color-text-secondary);
}

.contact-card__list li {
  padding: var(--spacing-xs) 0;
  position: relative;
  padding-left: var(--spacing-lg);
}

.contact-card__list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

/* ==========================================================================
   Form Component
   ========================================================================== */

.form {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-2xl);
}

.form__group {
  margin-bottom: var(--spacing-lg);
}

.form__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-sm);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
  font-family: var(--font-family-primary);
  background-color: var(--color-background);
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(47, 101, 102, 0.1);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

.form__error {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-error);
  margin-top: var(--spacing-xs);
  min-height: 1.2em;
}

.form__group--error .form__input,
.form__group--error .form__select,
.form__group--error .form__textarea {
  border-color: var(--color-error);
}

/* ==========================================================================
   Footer Component
   ========================================================================== */

.footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-4xl) 0 var(--spacing-2xl);
}

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

.footer__content {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-4xl);
  margin-bottom: var(--spacing-3xl);
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.footer__icon {
  font-size: var(--font-size-2xl);
}

.footer__name {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.footer__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
}

.footer__heading {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.footer__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__list li {
  margin-bottom: var(--spacing-sm);
}

.footer__link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer__copyright {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin: 0;
}

.footer__tech {
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
}

.footer__theme {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

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

.footer__theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-base);
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-md);
  transition: all var(--transition-fast);
}

.footer__theme-toggle:hover {
  background-color: var(--color-background);
  transform: rotate(15deg);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Large Devices */
@media (max-width: 1200px) {
  :root {
    --container-max-width: 100%;
    --container-padding: var(--spacing-xl);
  }
}

/* Medium Devices */
@media (max-width: 768px) {
  :root {
    --container-padding: var(--spacing-lg);
    --spacing-5xl: 6rem;
    --spacing-4xl: 4rem;
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
  }

  /* Navigation - Mobile */
  .nav__menu {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: 0;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }

  .nav__menu[aria-expanded="true"] {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav__item {
    width: 100%;
  }

  .nav__link {
    display: block;
    width: 100%;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    text-align: center;
  }

  .nav__toggle {
    display: flex;
  }

  /* Hero - Mobile */
  .hero__container {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    text-align: center;
  }

  .hero__stats {
    justify-content: center;
  }

  .hero__actions {
    justify-content: center;
  }

  .avatar__image {
    font-size: 80px;
  }

  /* About - Mobile */
  .about__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  /* Expertise - Mobile */
  .expertise__grid {
    grid-template-columns: 1fr;
  }

  /* Philosophy - Mobile */
  .philosophy__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  /* Getting Started - Mobile */
  .getting-started__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .step-card {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-lg);
  }

  .step-card__number {
    margin: 0 auto var(--spacing-md) auto;
  }

  .workflow-steps {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  /* Contact - Mobile */
  .contact__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  /* Footer - Mobile */
  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .footer__links {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* Small Devices */
@media (max-width: 480px) {
  :root {
    --container-padding: var(--spacing-md);
    --spacing-5xl: 4rem;
    --spacing-4xl: 3rem;
    --font-size-5xl: 2rem;
    --font-size-4xl: 1.75rem;
  }

  .hero {
    padding: calc(80px + var(--spacing-3xl)) 0 var(--spacing-4xl);
  }

  .hero__stats {
    flex-direction: column;
    gap: var(--spacing-lg);
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
  }

  .stats-card__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

/* ==========================================================================
   Animation & Interactions
   ========================================================================== */

/* Smooth scrolling for supported browsers */
@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --color-border: #000000;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
  }

  .btn--primary {
    border: 2px solid var(--color-text-inverse);
  }

  .btn--secondary {
    border-width: 3px;
  }
}

/* Print styles */
@media print {
  * {
    background: white !important;
    color: black !important;
    box-shadow: none !important;
  }

  .header,
  .theme-toggle,
  .nav__toggle,
  .footer__theme {
    display: none !important;
  }

  .hero {
    background: none !important;
    color: black !important;
  }

  .hero__title,
  .hero__name {
    color: black !important;
  }
}