/* 
  octbr Landing Page Styles
  Modern, minimalist, autumn-inspired palette.
  Uses CSS variables, Flexbox, and Grid for layout.
*/

/* Root theme tokens - Black/White/Gray palette matching logo */
:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f5f5f5;
  --color-bg-dark: #1a1a1a;

  --color-primary: #333333;       /* dark gray/black */
  --color-primary-soft: #666666;  /* medium gray */
  --color-accent: #000000;        /* pure black */
  --color-muted: #999999;         /* light gray */
  --color-border: #e0e0e0;

  --color-text: #1a1a1a;
  --color-text-soft: #666666;
  --color-text-on-dark: #ffffff;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.1);

  --font-sans: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --transition-fast: 150ms ease-out;
  --transition-med: 220ms ease-out;

  --container-max: 1120px;
  --section-padding-y: 5rem;
}

/* Global reset-ish */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: radial-gradient(circle at top left, #fafafa 0, var(--color-bg) 48%, #f5f5f5 100%);
  -webkit-font-smoothing: antialiased;
}

/* Accessibility: focus outline */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

/* Skip link for keyboard navigation */
.skip-link {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.4rem 0.75rem;
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  border-radius: var(--radius-sm);
  transform: translateY(-200%);
  transition: transform var(--transition-fast);
  z-index: 999;
  text-decoration: none;
  font-size: 0.85rem;
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* Layout helpers */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

/* Header / Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.98), rgba(245, 245, 245, 0.98));
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

/* Brand logo with dynamic animations */
.brand {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo {
  height: 32px;        /* perfect for headers */
  width: auto;
  display: block;
}

.brand-text {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  font-size: 0.9rem;
  color: var(--color-text);
}

/* Language switcher NL | EN – far right */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.lang-btn {
  background: none;
  border: none;
  padding: 0.35rem 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-soft);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.lang-btn:hover {
  color: var(--color-text);
}

.lang-btn.active {
  color: var(--color-primary);
  font-weight: 600;
}

.lang-sep {
  color: var(--color-border);
  font-weight: 400;
  user-select: none;
}

/* Navigation list */
.site-nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 1.75rem;
  margin: 0;
  padding: 0;
}

.site-nav a {
  font-size: 0.95rem;
  text-decoration: none;
  color: var(--color-text-soft);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.site-nav a:hover {
  color: var(--color-primary);
  transform: translateY(-1px);
}

.nav-cta {
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  background: rgba(250, 245, 239, 0.8);
  color: var(--color-text);
  font-weight: 500;
}

.nav-cta:hover {
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  border-color: transparent;
}

/* Ensure nav CTA text is white on hover (overrides .site-nav a:hover) */
.site-nav a.nav-cta:hover {
  color: var(--color-text-on-dark);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: transparent;
  border: none;
  padding: 0.4rem;
  cursor: pointer;
}

.nav-toggle-line {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-text);
  transition: transform var(--transition-med), opacity var(--transition-med), background var(--transition-med);
}

.nav-toggle-line + .nav-toggle-line {
  margin-top: 4px;
}

/* Hero section */
.hero {
  padding-top: 4rem;
}

.hero-inner {
  max-width: 42rem;
}

.hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.25rem, 3.1vw, 3rem);
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
}

.hero-subtitle {
  margin: 0 0 1.75rem;
  max-width: 34rem;
  color: var(--color-text-soft);
  line-height: 1.6;
}

/* About */
.about-inner {
  max-width: 48rem;
}

.about-text h2 {
  font-family: var(--font-display);
  font-size: 1.8rem;
  margin: 0 0 1rem;
}

.about-text p {
  margin: 0 0 0.9rem;
  color: var(--color-text-soft);
  line-height: 1.7;
}

/* Section headers */
.section-header {
  text-align: left;
  margin-bottom: 2.5rem;
}

.section-header h2 {
  font-family: var(--font-display);
  margin: 0 0 0.5rem;
  font-size: 1.85rem;
}

.section-subtitle {
  margin: 0;
  max-width: 30rem;
  color: var(--color-text-soft);
}

/* Features */
.features {
  background: radial-gradient(circle at top, #f0f0f0 0, #e8e8e8 26%, #f5f5f5 55%, #ffffff 100%);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.8rem;
}

.feature-card {
  background: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.4rem;
  border: 1px solid var(--color-border);
  box-shadow: 0 16px 30px rgba(61, 37, 23, 0.06);
  transition: transform var(--transition-med), box-shadow var(--transition-med), border-color var(--transition-med), background var(--transition-med);
}

.feature-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.feature-card-tag {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-muted);
  line-height: 1.4;
}

.feature-card p {
  margin: 0;
  color: var(--color-text-soft);
  line-height: 1.6;
}

.feature-card-tag + p {
  margin-top: 0.25rem;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(61, 37, 23, 0.13);
  border-color: rgba(0, 0, 0, 0.3);
  background: #fffaf6;
}

/* Contact */
.contact {
  background: linear-gradient(135deg, #1a1a1a, #0f0f0f);
  color: var(--color-text-on-dark);
}

.contact-inner {
  max-width: 720px;
}

.contact .section-header {
  text-align: left;
}

.contact .section-header h2 {
  color: var(--color-text-on-dark);
}

.contact .section-subtitle {
  color: rgba(252, 244, 236, 0.78);
}

/* Contact form */
.contact-form {
  margin-top: 2.2rem;
  background: rgba(16, 10, 7, 0.7);
  border-radius: var(--radius-lg);
  padding: 1.9rem 1.6rem 1.8rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
  font-weight: 500;
}

.form-group span[aria-hidden="true"] {
  color: #999999;
  margin-left: 0.1rem;
}

input,
textarea {
  width: 100%;
  padding: 0.7rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.25);
  background: rgba(10, 6, 4, 0.7);
  color: var(--color-text-on-dark);
  font-family: inherit;
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

input::placeholder,
textarea::placeholder {
  color: rgba(250, 239, 226, 0.55);
}

input:focus-visible,
textarea:focus-visible {
  border-color: var(--color-primary-soft);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.5);
  background: rgba(7, 5, 4, 0.9);
}

input.error,
textarea.error {
  border-color: #999999;
  box-shadow: 0 0 0 1px rgba(255, 155, 135, 0.5);
}

.input-error {
  margin: 0.25rem 0 0;
  font-size: 0.8rem;
  color: #999999;
  min-height: 1.1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.4rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition-med), color var(--transition-med), box-shadow var(--transition-med), transform var(--transition-med), border-color var(--transition-med);
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  box-shadow: 0 16px 35px rgba(0, 0, 0, 0.25);
}

.btn-primary:hover {
  background: #f08248;
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.25);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-soft);
  border: 1px solid rgba(0, 0, 0, 0.25);
}

.btn-ghost:hover {
  border-color: rgba(0, 0, 0, 0.6);
  color: var(--color-text);
  background: rgba(252, 243, 233, 0.8);
}

/* Form status message */
.form-status {
  margin-top: 0.8rem;
  font-size: 0.9rem;
  min-height: 1.1rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  background: #f5f5f5;
  padding: 1.5rem 0 1.8rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.9rem;
  color: var(--color-text-soft);
}

.footer-social {
  display: flex;
  gap: 1.2rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-social a {
  color: var(--color-text-soft);
  text-decoration: none;
  position: relative;
  padding-bottom: 2px;
}

.footer-social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem;
  color: var(--color-text-soft);
  border-radius: 4px;
  transition: color var(--transition-fast), background var(--transition-fast);
}

.footer-social-icon:hover {
  color: #fff;
  background: #0a66c2;
}

.footer-social-icon .icon-linkedin {
  width: 20px;
  height: 20px;
  display: block;
}

.footer-social a:not(.footer-social-icon)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--color-primary);
  transition: width var(--transition-fast);
}

.footer-social a:not(.footer-social-icon):hover::after {
  width: 100%;
}

/* Utility: success / error colors for form status */
.form-status--success {
  color: #cccccc;
}

.form-status--error {
  color: #999999;
}

/* Responsive behaviour */

@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .site-header {
    border-bottom: 1px solid rgba(0, 0, 0, 0.12);
  }

  .site-nav {
    position: absolute;
    inset: 100% 0 auto 0;
    background: rgba(250, 245, 239, 0.98);
    border-bottom: 1px solid rgba(0, 0, 0, 0.12);
    transform-origin: top;
    transform: scaleY(0.9);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-med), opacity var(--transition-med);
  }

  .site-nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: scaleY(1);
  }

  .site-nav ul {
    flex-direction: column;
    align-items: flex-start;
    padding: 0.6rem 1.5rem 1.1rem;
    gap: 0.8rem;
  }

  .nav-cta {
    margin-top: 0.3rem;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
  }

  /* Animated toggle (hamburger -> X) */
  .nav-toggle[aria-expanded="true"] .nav-toggle-line:first-child {
    transform: translateY(3px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-line:last-child {
    transform: translateY(-3px) rotate(-45deg);
  }

  .section {
    padding: 3.75rem 0;
  }

  .hero {
    padding-top: 3rem;
  }

  .hero-copy h1 {
    font-size: 2rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .features-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-form {
    padding: 1.6rem 1.2rem 1.4rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}