/* ============================================
   RANKING IMPROVEMENT - GLOBAL STYLES
   ============================================ */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@400;500;600;700;800;900&display=swap');

:root {
  /* ========== Brand Color Palette ========== */
  --color-black: #100C16;
  --color-purple: #570BAF;
  --color-medium-purple: #7046C1;
  --color-light-purple: #A67AED;
  --color-white: #FEFDFF;

  /* Gradient Variants */
  --gradient-purple: linear-gradient(135deg, var(--color-purple) 0%, var(--color-medium-purple) 100%);
  --gradient-purple-light: linear-gradient(135deg, var(--color-medium-purple) 0%, var(--color-light-purple) 100%);

  /* Semantic Colors */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  /* ========== Theme Variables (Dark Mode - Default) ========== */
  --color-bg: var(--color-black);
  --color-bg-alt: #0a0810;
  --color-text: var(--color-white);
  --color-text-muted: rgba(254, 253, 255, 0.8);
  --color-text-subtle: rgba(254, 253, 255, 0.6);
  --color-border: rgba(166, 122, 237, 0.2);
  --color-border-subtle: rgba(166, 122, 237, 0.1);
  --color-card-bg: rgba(166, 122, 237, 0.05);
  --color-card-hover: rgba(166, 122, 237, 0.1);
  --header-bg: rgba(16, 12, 22, 0.95);
  --header-bg-scrolled: rgba(16, 12, 22, 0.98);
  --dropdown-bg: rgba(16, 12, 22, 0.98);

  /* ========== Typography ========== */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-secondary: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Font Sizes */
  --text-xs: 0.75rem;
  /* 12px */
  --text-sm: 0.875rem;
  /* 14px */
  --text-base: 1rem;
  /* 16px */
  --text-lg: 1.125rem;
  /* 18px */
  --text-xl: 1.25rem;
  /* 20px */
  --text-2xl: 1.5rem;
  /* 24px */
  --text-3xl: 1.875rem;
  /* 30px */
  --text-4xl: 2.25rem;
  /* 36px */
  --text-5xl: 3rem;
  /* 48px */
  --text-6xl: 3.75rem;
  /* 60px */

  /* Font Weights */
  --font-light: 300;
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* ========== Spacing ========== */
  --spacing-xs: 0.5rem;
  /* 8px */
  --spacing-sm: 1rem;
  /* 16px */
  --spacing-md: 2rem;
  /* 32px */
  --spacing-lg: 4rem;
  /* 64px */
  --spacing-xl: 8rem;
  /* 128px */

  /* ========== Border Radius ========== */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --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);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-purple: 0 10px 30px rgba(87, 11, 175, 0.3);

  /* ========== Transitions ========== */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* ========== Layout ========== */
  --container-max-width: 1280px;
  --header-height: 80px;
}

/* ========== Light Theme Variables ========== */
[data-theme="light"] {
  --color-bg: #FEFDFF;
  --color-bg-alt: #F5F3F8;
  --color-text: #100C16;
  --color-text-muted: rgba(16, 12, 22, 0.75);
  --color-text-subtle: rgba(16, 12, 22, 0.55);
  --color-border: rgba(87, 11, 175, 0.15);
  --color-border-subtle: rgba(87, 11, 175, 0.08);
  --color-card-bg: rgba(87, 11, 175, 0.04);
  --color-card-hover: rgba(87, 11, 175, 0.08);
  --header-bg: rgba(254, 253, 255, 0.95);
  --header-bg-scrolled: rgba(254, 253, 255, 0.98);
  --dropdown-bg: rgba(254, 253, 255, 0.98);
  /* Override purple accent to use darker purple for better contrast */
  --color-light-purple: #570BAF;
}

/* ============================================
   RESET & BASE STYLES
   ============================================ */

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

html {
  scroll-behavior: smooth;
  color-scheme: dark light;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-primary);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

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

h1 {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
}

h2 {
  font-size: var(--text-4xl);
}

h3 {
  font-size: var(--text-3xl);
}

h4 {
  font-size: var(--text-2xl);
}

h5 {
  font-size: var(--text-xl);
}

h6 {
  font-size: var(--text-lg);
}

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

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

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

ul,
ol {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-family: var(--font-secondary);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  text-align: center;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-purple);
  color: var(--color-white);
  border-color: var(--color-purple);
  box-shadow: var(--shadow-purple);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 40px rgba(87, 11, 175, 0.4);
  color: var(--color-white);
}

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

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-light-purple);
}

.btn-secondary:hover {
  background: var(--color-light-purple);
  border-color: var(--color-light-purple);
  color: var(--color-black);
  transform: translateY(-2px);
}

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

.btn-small {
  padding: 0.625rem 1.5rem;
  font-size: var(--text-sm);
}

.btn-large {
  padding: 1.125rem 2.5rem;
  font-size: var(--text-lg);
}

/* Text Utilities */
.text-center {
  text-align: center;
}

.text-gradient {
  background: var(--gradient-purple-light);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Spacing Utilities */
.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

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

.mb-md {
  margin-bottom: var(--spacing-md);
}

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

.py-sm {
  padding-top: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
}

.py-md {
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
}

.py-lg {
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--header-bg);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border-subtle);
  z-index: 1000;
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-lg);
  background: var(--header-bg-scrolled);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

.logo {
  font-family: var(--font-secondary);
  font-size: var(--text-2xl);
  font-weight: var(--font-extrabold);
  color: var(--color-text);
  text-decoration: none;
}

.logo span {
  background: var(--gradient-purple-light);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

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

.nav-item {
  position: relative;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 1rem;
  font-weight: var(--font-medium);
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-light-purple);
}

.nav-link.has-dropdown::after {
  content: '▼';
  font-size: 0.625rem;
  margin-left: 0.25rem;
  transition: transform var(--transition-fast);
}

.nav-item:hover .nav-link.has-dropdown::after {
  transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 250px;
  background: var(--dropdown-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--spacing-xs);
  margin-top: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-normal);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(10px);
}

.nav-item:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.dropdown-link:hover {
  background: var(--color-card-hover);
  color: var(--color-light-purple);
  transform: translateX(5px);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 0.375rem;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-fast);
}

/* Header CTA Buttons */
.header-cta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--spacing-lg) 0 var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-column h4 {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--color-light-purple);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-link {
  color: var(--color-text-subtle);
  transition: all var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-light-purple);
  transform: translateX(5px);
}

.footer-bottom {
  border-top: 1px solid var(--color-border-subtle);
  padding-top: var(--spacing-md);
  text-align: center;
}

.footer-bottom p {
  color: var(--color-text-subtle);
  font-size: var(--text-sm);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
  :root {
    --text-5xl: 2.5rem;
    --text-4xl: 2rem;
    --text-3xl: 1.75rem;
  }
}

@media (max-width: 768px) {
  :root {
    --text-5xl: 2rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.5rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
  }

  .main-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .main-nav.mobile-active {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: rgba(16, 12, 22, 0.98);
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(166, 122, 237, 0.2);
    backdrop-filter: blur(10px);
  }

  .nav-menu {
    flex-direction: column;
    width: 100%;
    gap: 0;
  }

  .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    margin-top: 0.5rem;
    display: none;
  }

  .nav-item.mobile-dropdown-active .dropdown-menu {
    display: block;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   MAIN CONTENT SPACING
   ============================================ */

main {
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

/* ============================================
   THEME TOGGLE
   ============================================ */

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-normal);
  margin-right: var(--spacing-sm);
}

.theme-toggle:hover {
  background: var(--color-card-hover);
  border-color: var(--color-light-purple);
  transform: scale(1.05);
}

.theme-toggle:active {
  transform: scale(0.95);
}

.theme-toggle .icon {
  font-size: 1.25rem;
  transition: transform var(--transition-normal);
}

.theme-toggle:hover .icon {
  transform: rotate(15deg);
}

/* Sun icon (shown in dark mode, switches to light) */
.theme-toggle .icon-sun {
  display: none;
}

/* Moon icon (shown in light mode, switches to dark) */
.theme-toggle .icon-moon {
  display: block;
}

/* When light theme is active */
[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}