/* ==========================================================================
   DIGI KURZY 2026 - Stylesheet
   Design Inspiration: Luzen Webflow Template (Authentic Soft Beige & Charcoal Palette)
   Typography: Space Grotesque (Headings), Inter (Body)
   Constraint: Font size strictly >= 19px for body text
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesque:wght@400;500;600;700&display=swap');

:root {
  /* Luzen Color System */
  --base-white: #ffffff;
  --base-soft-beige: #fbf9f5;
  --base-bold-black: #0e0e0e;
  --base-soft-black: #1a1a1a;
  --base-mid-grey: #585858;
  --base-light-grey: #e9e7e3;
  --base-border: #e2e0dc;

  /* Semantic Theme Mapping (Luzen Aesthetic) */
  --bg-main: var(--base-soft-beige);
  --bg-card: var(--base-white);
  --bg-dark: var(--base-bold-black);

  --text-main: var(--base-bold-black);
  --text-muted: var(--base-mid-grey);
  --text-on-dark: var(--base-white);

  /* Typography */
  --font-heading: 'Space Grotesque', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Strictly >= 19px for body */
  --font-size-body: 19px;
  --font-size-body-lg: 22px;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-body);
}

body {
  font-family: var(--font-body);
  font-size: 1rem; /* 19px */
  line-height: 1.65;
  color: var(--text-main);
  background-color: var(--bg-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.12;
  color: var(--text-main);
  letter-spacing: -0.025em;
}

h1 {
  font-size: clamp(2.8rem, 5.5vw, 4.2rem);
  margin-bottom: 1.5rem;
}

h2 {
  font-size: clamp(2.2rem, 3.8vw, 3.2rem);
  margin-bottom: 1.25rem;
}

h3 {
  font-size: clamp(1.4rem, 2.2vw, 1.75rem);
  margin-bottom: 0.75rem;
}

p {
  font-size: var(--font-size-body);
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

p.lead {
  font-size: var(--font-size-body-lg);
  color: var(--text-main);
  font-weight: 400;
  line-height: 1.55;
}

a {
  color: var(--base-bold-black);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

a:hover {
  opacity: 0.75;
}

/* Layout Utilities */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 6.5rem 0;
  position: relative;
}

.bg-white {
  background-color: var(--base-white);
}

.bg-beige {
  background-color: var(--base-soft-beige);
}

.bg-dark {
  background-color: var(--base-bold-black);
  color: var(--text-on-dark);
}

.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4 {
  color: var(--text-on-dark);
}

.bg-dark p {
  color: rgba(255, 255, 255, 0.75);
}

/* Header & Navigation (Luzen Style Clean Sticky Nav) */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 0;
  transition: background-color var(--transition-normal), padding var(--transition-normal), border-color var(--transition-normal);
  border-bottom: 1px solid transparent;
}

.header.scrolled {
  background-color: rgba(251, 249, 245, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  padding: 1rem 0;
  border-bottom: 1px solid var(--base-border);
}

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

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--base-bold-black);
  letter-spacing: -0.01em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background-color: var(--base-bold-black);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--base-white);
}

.logo-text span {
  font-weight: 400;
  color: var(--base-mid-grey);
}

/* Nav Menu */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.nav-link {
  font-size: 1rem; /* 19px */
  font-weight: 500;
  color: var(--base-bold-black);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--base-bold-black);
  transition: width var(--transition-fast);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background-color: var(--base-bold-black);
  color: var(--base-white) !important;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.nav-cta:hover {
  background-color: var(--base-soft-black);
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  padding-top: 11rem;
  padding-bottom: 6rem;
}

.hero-content {
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 1.2rem;
  background-color: var(--base-white);
  border: 1px solid var(--base-border);
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--base-bold-black);
  margin-bottom: 2rem;
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background-color: #10b981;
  border-radius: 50%;
}

.hero-title {
  color: var(--base-bold-black);
}

.hero-description {
  font-size: 1.25rem; /* ~24px */
  line-height: 1.6;
  color: var(--base-mid-grey);
  max-width: 780px;
  margin: 0 auto 2.75rem auto;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.1rem 2.4rem;
  background-color: var(--base-bold-black);
  color: var(--base-white) !important;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.btn-primary:hover {
  background-color: #262626;
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1.1rem 2.2rem;
  background-color: var(--base-white);
  border: 1px solid var(--base-border);
  color: var(--base-bold-black) !important;
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.btn-secondary:hover {
  background-color: var(--base-light-grey);
  border-color: #d1cfc9;
  transform: translateY(-2px);
}

/* Stats Row (Luzen Architectural Stat Boxes) */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  background-color: var(--base-white);
  border: 1px solid var(--base-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-top: 2rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--base-bold-black);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 1rem;
  color: var(--base-mid-grey);
  font-weight: 500;
}

/* Section Headers (Authentic Luzen Large Numbered Headers) */
.section-header {
  display: flex;
  align-items: flex-start;
  gap: 2.5rem;
  margin-bottom: 3.5rem;
  position: relative;
}

.section-number {
  font-family: var(--font-heading);
  font-size: 5.5rem;
  font-weight: 700;
  line-height: 0.85;
  color: var(--base-bold-black);
  opacity: 0.15;
  user-select: none;
  flex-shrink: 0;
}

.bg-dark .section-number {
  color: var(--base-white);
  opacity: 0.2;
}

.section-title-wrap {
  flex-grow: 1;
}

.section-tag {
  text-transform: uppercase;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--base-mid-grey);
  margin-bottom: 0;
  display: block;
}

/* Feature Grid & Cards */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3.5rem;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.card {
  background-color: var(--base-white);
  border: 1px solid var(--base-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-6px);
  border-color: #c8c5be;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
}

.card-icon {
  width: 56px;
  height: 56px;
  background-color: var(--base-soft-beige);
  border: 1px solid var(--base-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--base-bold-black);
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.45rem;
  margin-bottom: 0.85rem;
  color: var(--base-bold-black);
}

.card-text {
  font-size: 1rem;
  color: var(--base-mid-grey);
  flex-grow: 1;
  margin-bottom: 0;
}

/* Image Wrappers (Luzen Parallax Effect style) */
.img-box {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--base-border);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
}

.img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-normal);
}

.img-box:hover img {
  transform: scale(1.04);
}

/* Asymmetrical Luzen Image Composition (Wider than container, overlapping & floating) */
.luzen-image-composition {
  position: relative;
  width: 116%;
  left: -8%;
  margin-top: 4rem;
  display: grid;
  grid-template-columns: 0.85fr 1.2fr;
  align-items: center;
  gap: 0;
}

.composition-left {
  position: relative;
  z-index: 2;
  margin-right: -4rem;
  transform: translateY(3.8rem);
  animation: luzenFloat 7s ease-in-out infinite;
}

.composition-left .img-box {
  border: 4px solid var(--base-white);
  box-shadow: -15px 25px 50px rgba(0, 0, 0, 0.1);
}

.composition-right {
  position: relative;
  z-index: 1;
}

.composition-right .img-box {
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.08);
}

@keyframes luzenFloat {
  0%, 100% { transform: translateY(3.8rem); }
  50% { transform: translateY(2.6rem); }
}

/* Highlight Box (Dotace) */
.highlight-box {
  background-color: var(--base-bold-black);
  color: var(--base-white);
  border-radius: var(--radius-lg);
  padding: 3rem;
  position: relative;
}

.badge-green {
  background-color: rgba(34, 197, 94, 0.2);
  color: #4ade80;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 1.25rem;
}

/* Timeline Step List (Luzen Sleek List) */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.timeline-item {
  display: flex;
  gap: 2rem;
  background-color: var(--base-white);
  border: 1px solid var(--base-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem 2.5rem;
  transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.timeline-item:hover {
  transform: translateX(8px);
  border-color: #c8c5be;
}

.timeline-step {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--base-bold-black);
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  background-color: var(--base-soft-beige);
  border: 1px solid var(--base-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline-content h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
  color: var(--base-bold-black);
}

.timeline-content p {
  margin-bottom: 0;
}

/* Accordion FAQ (Luzen Clean Accordion) */
.accordion-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 920px;
  margin: 0 auto;
}

.accordion-item {
  background-color: var(--base-white);
  border: 1px solid var(--base-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.accordion-item.active {
  border-color: var(--base-bold-black);
}

.accordion-header {
  padding: 1.75rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.accordion-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
  color: var(--base-bold-black);
}

.accordion-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--base-bold-black);
  transition: transform var(--transition-normal);
  font-size: 1.5rem;
  font-weight: 300;
}

.accordion-item.active .accordion-icon {
  transform: rotate(45deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-normal);
  padding: 0 2rem;
}

.accordion-item.active .accordion-content {
  padding: 0.5rem 2rem 2.5rem 2rem;
}

.accordion-content p {
  margin: 0;
  padding-bottom: 0.5rem;
  color: var(--base-mid-grey);
  line-height: 1.7;
}

/* Footer (Luzen High-Contrast Dark Footer) */
.footer {
  background-color: var(--base-bold-black);
  color: var(--base-white);
  padding: 5.5rem 0 3rem 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand .logo {
  color: var(--base-white);
}

.footer-brand .logo-icon {
  background-color: var(--base-white);
  color: var(--base-bold-black);
}

.footer-brand p {
  max-width: 400px;
  margin-top: 1.25rem;
  color: rgba(255, 255, 255, 0.65);
}

.footer-heading {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--base-white);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1rem;
}

.footer-links a:hover {
  color: var(--base-white);
  opacity: 1;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.45);
}

/* Mobile Responsive */
@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .luzen-image-composition {
    width: 100%;
    left: 0;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 3rem;
  }
  .composition-left {
    margin-right: 0;
    transform: none;
    animation: none;
  }
  .composition-left .img-box {
    border: 1px solid var(--base-border);
  }
}

@media (max-width: 768px) {
  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 3.5rem 0;
  }
  .hero {
    padding-top: 7rem;
    padding-bottom: 3.5rem;
  }
  .section-header {
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.8rem;
  }
  .section-number {
    font-size: 3.8rem;
  }
  .nav-menu {
    display: none;
  }
  .nav-cta {
    display: none;
  }
  .timeline-item {
    flex-direction: column;
    gap: 1rem;
    padding: 1.75rem 1.5rem;
    align-items: flex-start;
  }
  .timeline-step {
    width: 46px;
    height: 46px;
    font-size: 1.6rem;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}