/* ============================================
   Modern Refined Dark Mode - Base Styles
   ============================================ */

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

:root {
  /* Refined Dark Mode Color Palette */
  --color-primary: #4a9eff;
  --color-primary-dark: #357abd;
  --color-primary-light: #6bb0ff;
  --color-accent: #7c3aed;
  --color-text: #e5e7eb;
  --color-text-muted: #9ca3af;
  --color-text-light: #6b7280;
  --color-bg: #0a0a0a;
  --color-bg-light: #111111;
  --color-bg-card: rgba(17, 17, 17, 0.8);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(74, 158, 255, 0.3);
  --color-bg-hover: rgba(74, 158, 255, 0.05);
  
  /* Typography */
  --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  
  /* Z-index layers */
  --z-base: 1;
  --z-sticky: 10;
  --z-dropdown: 20;
  --z-modal: 30;
  --z-overlay: 40;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  overflow-x: hidden;
  min-height: 100vh;
  line-height: 1.6;
}

/* ============================================
   Container - Clean Layout
   ============================================ */

.container {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto auto 1fr auto;
  grid-template-areas:
    "header"
    "hero"
    "body"
    "footer";
  background: var(--color-bg);
  position: relative;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

h1 {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
  margin-bottom: var(--spacing-sm);
}

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

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

/* ============================================
   Buttons - Modern & Clean
   ============================================ */

.btn {
  display: inline-block;
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  font-weight: var(--font-weight-medium);
  text-align: center;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-primary);
  color: #ffffff;
  border: 1px solid var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-bg-hover);
}

/* ============================================
   Scrollbar Styling
   ============================================ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-light);
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* ============================================
   Responsive Breakpoints
   ============================================ */

@media (min-width: 768px) {
  :root {
    --spacing-sm: 1.25rem;
    --spacing-md: 2rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
  }
}

@media (min-width: 1024px) {
  :root {
    --spacing-md: 2.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
  }
}

/* ============================================
   Body Layout - CSS Grid
   ============================================ */

.body {
  grid-area: body;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas: "content";
  gap: 0;
  min-height: 0;
  position: relative;
  z-index: 1;
}

/* Body now uses full width - no sidebar */
  .body {
  grid-template-columns: 1fr;
  grid-template-areas: "content";
}

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

.footer {
  grid-area: footer;
  background: rgba(10, 10, 10, 0.95);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-md);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.footer p {
  margin: 0;
}