/* ==========================================================================
   Valsa Website - Main Stylesheet
   ========================================================================== */

/* --------------------------------------------------------------------------
   Font Face Declarations
   -------------------------------------------------------------------------- */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/inter-400.woff2') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/inter-500.woff2') format('woff2');
}

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/inter-600.woff2') format('woff2');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/jetbrains-mono-400.woff2') format('woff2');
}

/* --------------------------------------------------------------------------
   CSS Custom Properties (Variables)
   -------------------------------------------------------------------------- */
:root {
  /* Colors - Primary */
  --color-background: #0a0a0b;
  --color-surface: #111113;
  --color-border: #1e1e21;
  --color-text-primary: #fafafa;
  --color-text-secondary: #a1a1aa;

  /* Colors - Accent */
  --color-green: #22c55e;
  --color-red: #ef4444;
  --color-yellow: #eab308;
  --color-blue: #3b82f6;
  --color-blue-hover: #2563eb;

  /* Colors - Terminal */
  --color-terminal-bg: #0d0d0f;
  --color-terminal-border: #1e1e21;
  --color-terminal-prompt: #22c55e;
  --color-terminal-command: #fafafa;
  --color-terminal-output: #a1a1aa;
  --color-terminal-timestamp: #6b7280;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;

  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.5rem;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
}

/* --------------------------------------------------------------------------
   Accessibility
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus {
  position: fixed;
  top: var(--space-4);
  left: var(--space-4);
  width: auto;
  height: auto;
  padding: var(--space-2) var(--space-4);
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
  background: var(--color-blue);
  color: #fff;
  text-decoration: none;
  border-radius: var(--radius-lg);
  z-index: 100;
}

/* --------------------------------------------------------------------------
   CSS Reset
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-background);
  min-height: 100vh;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible,
.btn:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1 {
  font-size: var(--text-4xl);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text-primary);
}

h2 {
  font-size: var(--text-2xl);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--color-text-primary);
}

h3 {
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-text-primary);
}

p {
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.text-lead {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-text-secondary);
}

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--color-surface);
  padding: 0.125em 0.375em;
  border-radius: var(--radius-sm);
}

pre {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  overflow-x: auto;
}

pre code {
  background-color: transparent;
  padding: 0;
}

/* Responsive typography */
@media (min-width: 768px) {
  h1 {
    font-size: var(--text-5xl);
  }

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

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

@media (min-width: 1024px) {
  h1 {
    font-size: var(--text-6xl);
  }
}

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn--primary {
  background-color: var(--color-blue);
  color: #ffffff;
}

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

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

.btn--secondary:hover {
  background-color: rgba(59, 130, 246, 0.1);
}

/* --------------------------------------------------------------------------
   Terminal
   -------------------------------------------------------------------------- */
.terminal {
  background-color: var(--color-terminal-bg);
  border: 1px solid var(--color-terminal-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.terminal__header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-terminal-border);
}

.terminal__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.terminal__dot--red {
  background-color: var(--color-red);
}

.terminal__dot--yellow {
  background-color: var(--color-yellow);
}

.terminal__dot--green {
  background-color: var(--color-green);
}

.terminal__content {
  padding: var(--space-5) var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  overflow-x: auto;
}

.terminal .prompt {
  color: var(--color-terminal-prompt);
}

.terminal .command {
  color: var(--color-terminal-command);
}

.terminal .dim {
  color: var(--color-terminal-timestamp);
}

.terminal .allow {
  color: var(--color-green);
}

.terminal .deny {
  color: var(--color-red);
}

.terminal .audit {
  color: var(--color-yellow);
}

/* --------------------------------------------------------------------------
   Feature Cards
   -------------------------------------------------------------------------- */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.feature-card {
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.feature-card__icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-4);
  color: var(--color-blue);
}

.feature-card__title {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
}

.feature-card__description {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Comparison Cards
   -------------------------------------------------------------------------- */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .comparison-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.comparison-card {
  /* Uses .card base class */
}

.comparison-card__title {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.comparison-card__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.comparison-card__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

.comparison-card__item--check::before {
  content: "✓";
  color: var(--color-green);
  font-weight: 600;
}

.comparison-card__item--question::before {
  content: "?";
  color: var(--color-yellow);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-8);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-10);
  }
}

.section {
  padding: var(--space-16) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-20) 0;
  }
}

@media (min-width: 1024px) {
  .section {
    padding: var(--space-24) 0;
  }
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-12);
}

.section__title {
  margin-bottom: var(--space-4);
}

.section__description {
  max-width: 640px;
  margin: 0 auto;
}

.section__footer {
  text-align: center;
  margin-top: var(--space-8);
  color: var(--color-text-secondary);
}

.section__cta {
  text-align: center;
  margin-top: var(--space-6);
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__logo {
  display: flex;
  align-items: center;
}

.nav__logo svg {
  height: 28px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */
.hero {
  text-align: center;
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
}

@media (min-width: 768px) {
  .hero {
    padding-top: var(--space-24);
    padding-bottom: var(--space-24);
  }
}

.hero__inner {
  max-width: 800px;
  margin: 0 auto;
}

.hero__title {
  margin-bottom: var(--space-6);
}

.hero__subtitle {
  margin-bottom: var(--space-8);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  padding: var(--space-12) 0;
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  text-align: center;
}

.footer__brand {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

.footer__links {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

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

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

.footer__separator {
  color: var(--color-text-secondary);
}

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

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