/* ===================================
   Font Imports
   =================================== */
@import url('https://fonts.cdnfonts.com/css/tt-interfaces');

/* ===================================
   CSS Variables - Design Tokens
   =================================== */
:root {
  /* Spacing */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 96px;

  /* Colors */
  --color-primary: #0a0a0a;
  --color-primary-hover: #2a2a2a;
  --color-primary-active: #000000;

  --color-surface-base: #ffffff;
  --color-surface-raised: #f9fafb;
  --color-surface-overlay: #ffffff;

  --color-text-primary: #111827;
  --color-text-secondary: #6b7280;
  --color-text-tertiary: #9ca3af;

  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;

  --color-border: #e5e7eb;
  --color-border-hover: #d1d5db;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --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: 2rem;      /* 32px */
  --font-size-4xl: 2.5rem;    /* 40px */
  --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: 1.75;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --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);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 200ms ease-in-out;
  --transition-slow: 300ms ease-in-out;

  /* Breakpoints */
  --breakpoint-mobile: 640px;
  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 1024px;
  --breakpoint-wide: 1280px;

  /* Layout */
  --header-height: 64px;
  --container-max-width: 1280px;
}

/* ===================================
   Base Styles
   =================================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

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

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

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

p {
  color: var(--color-text-secondary);
}

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

/* ===================================
   Layout Components
   =================================== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
}

/* ===================================
   Header
   =================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
  transition: box-shadow var(--transition-base);
}

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

.header__logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
  font-family: 'TT Interfaces', sans-serif;
  font-style: italic;
  text-transform: uppercase;
}

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

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

.header__link:hover {
  color: var(--color-text-primary);
}

@media (max-width: 768px) {
  .header__nav {
    gap: var(--spacing-md);
  }
  
  .header__link {
    display: none;
  }
  
  .header__link:last-of-type {
    display: block;
  }
}

/* ===================================
   Button Component
   =================================== */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-family);
  text-decoration: none;
}

.button--primary {
  background-color: var(--color-primary);
  color: white;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.button--primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
  transform: translateY(-1px);
}

.button--primary:active {
  background-color: var(--color-primary-active);
  transform: translateY(0);
}

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

.button--secondary:hover {
  background-color: var(--color-surface-raised);
  border-color: var(--color-text-primary);
  transform: translateY(-1px);
}

.button--large {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
}

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

/* ===================================
   Card Component
   =================================== */
.card {
  background-color: var(--color-surface-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

/* ===================================
   Hero Section
   =================================== */
.hero {
  padding: var(--spacing-4xl) 0 var(--spacing-3xl);
  background: linear-gradient(180deg, var(--color-surface-base) 0%, var(--color-surface-raised) 100%);
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1200px;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, var(--color-border) 50%, transparent 100%);
}

.hero__wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.hero__content {
  max-width: 600px;
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  line-height: 1.1;
}

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

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

.hero__cta {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero__image {
  position: relative;
}

.dashboard-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  border: 1px solid var(--color-border);
}

@media (max-width: 768px) {
  .hero {
    padding: var(--spacing-4xl) 0 var(--spacing-3xl);
  }
  
  .hero__wrapper {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
  
  .hero__content {
    text-align: center;
    max-width: 100%;
  }
  
  .hero__title {
    font-size: var(--font-size-4xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-xl);
  }
  
  .hero__description {
    font-size: var(--font-size-base);
  }
  
  .hero__cta {
    flex-direction: column;
    justify-content: center;
  }
  
  .button--large {
    width: 100%;
  }
}

/* ===================================
   Section Styles
   =================================== */
.section__title {
  text-align: center;
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-2xl);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.features .section__title {
  color: #ffffff;
}

/* Dark section context improvements for cards in Features */
.features .feature-card {
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
}

.features .feature-card:hover {
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.45);
}

@media (max-width: 768px) {
  .section__title {
    font-size: var(--font-size-3xl);
  }
}

/* ===================================
   Features Section
   =================================== */
.features {
  padding: var(--spacing-3xl) 0;
  background:
    radial-gradient(1200px 400px at 50% -10%, rgba(255, 255, 255, 0.06), transparent 60%),
    linear-gradient(180deg, #0a0a0a 0%, #111111 100%);
  position: relative;
}

.features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1200px;
  height: 1px;
  background: linear-gradient(90deg, transparent 0%, rgba(255, 255, 255, 0.12) 50%, transparent 100%);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-lg);
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 1200px) {
  .features__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 900px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.feature-card {
  text-align: center;
  background-color: var(--color-surface-base);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-text-primary);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: white;
  border-radius: var(--radius-lg);
}

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

.feature-card__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  font-size: var(--font-size-base);
}

/* ===================================
   Features Section - Dark Card Redesign
   =================================== */
/* Make cards fully dark within the features section */
.features .feature-card {
  background: rgba(255, 255, 255, 0.04);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04), 0 8px 24px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(6px);
}

.features .feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 255, 255, 0.28);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 16px 36px rgba(0, 0, 0, 0.5);
}

/* Typography adjustments for dark cards */
.features .feature-card__title {
  color: #ffffff;
}

.features .feature-card__description {
  color: rgba(255, 255, 255, 0.78);
}

/* Icon treatment for dark cards */
.features .feature-card__icon {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.14), rgba(255, 255, 255, 0.06));
  border: 1px solid rgba(255, 255, 255, 0.22);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

@media (max-width: 768px) {
  .features__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

/* ===================================
   How It Works Section
   =================================== */
.how-it-works {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-surface-raised);
}

.how-it-works__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 1100px) {
  .how-it-works__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.how-it-works__item {
  position: relative;
  padding-left: var(--spacing-lg);
  border-left: 2px solid var(--color-border);
  transition: border-color var(--transition-base);
}

.how-it-works__item:hover {
  border-left-color: var(--color-primary);
}

.how-it-works__item:hover .how-it-works__number {
  color: var(--color-primary);
}

.how-it-works__number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-border);
  margin-bottom: var(--spacing-sm);
  line-height: 1;
  transition: color var(--transition-base);
}

.how-it-works__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.how-it-works__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  font-size: var(--font-size-base);
}

@media (max-width: 768px) {
  .how-it-works__grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
}

/* ===================================
   Why Section
   =================================== */
.why {
  padding: var(--spacing-3xl) 0;
  background-color: var(--color-surface-base);
}

.why__content {
  max-width: 1000px;
  margin: 0 auto;
  text-align: center;
}

.why__lead {
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  font-weight: var(--font-weight-medium);
}

.why__comparison {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.comparison-card {
  background-color: var(--color-surface-base);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: left;
  transition: all var(--transition-base);
  position: relative;
}

.comparison-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.comparison-card--highlight {
  border-color: var(--color-primary);
  background-color: var(--color-primary);
  color: white;
}

.comparison-card--highlight .comparison-card__title {
  color: white;
}

.comparison-card--highlight .comparison-card__description {
  color: rgba(255, 255, 255, 0.9);
}

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

.comparison-card__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  font-size: var(--font-size-base);
}

.why__insight {
  margin-bottom: var(--spacing-xl);
  padding: var(--spacing-xl);
  background-color: var(--color-surface-raised);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
}

.why__insight p {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  line-height: var(--line-height-relaxed);
}

.why__cta {
  padding: var(--spacing-xl) 0 0;
}

.why__cta h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.01em;
}

@media (max-width: 768px) {
  .why__comparison {
    grid-template-columns: 1fr;
  }
  
  .why__lead {
    font-size: var(--font-size-xl);
  }
  
  .why__cta h3 {
    font-size: var(--font-size-2xl);
  }
}

/* ===================================
   Footer
   =================================== */
.footer {
  background-color: var(--color-primary);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  margin-top: var(--spacing-3xl);
}

.footer__content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.footer__info {
  text-align: right;
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.footer__info p {
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}

.footer__logo {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.01em;
  font-family: 'TT Interfaces', sans-serif;
  font-style: italic;
  text-transform: uppercase;
}

.footer__tagline {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-base);
}

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

.footer__column {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.footer__heading {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-sm);
  color: white;
}

.footer__link {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
  font-size: var(--font-size-sm);
}

.footer__link:hover {
  color: white;
}

.footer__bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  text-align: center;
}

.footer__bottom p {
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--font-size-sm);
}

@media (max-width: 768px) {
  .footer__content {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-2xl);
  }
  
  .footer__info {
    text-align: left;
  }
  
  .footer__links {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}