/* ========================================
   Prodocum.cz — Stylesheet
   ======================================== */

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

:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-secondary: #5a5a72;
  --color-text-tertiary: #8a8a9a;
  --color-accent: #4f46e5;
  --color-accent-light: #eef2ff;
  --color-accent-hover: #4338ca;
  --color-border: #e8e8ee;
  --color-border-hover: #d0d0de;
  --color-shadow: rgba(26, 26, 46, 0.06);
  --color-shadow-hover: rgba(26, 26, 46, 0.12);

  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.75rem;
  --font-size-5xl: 3.5rem;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

  --container-max: 1120px;
  --section-padding: 6rem;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

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

/* --- Header --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(250, 250, 250, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base), background var(--transition-base);
}

.header--scrolled {
  border-bottom-color: var(--color-border);
  background: rgba(250, 250, 250, 0.95);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 600;
  font-size: var(--font-size-lg);
  color: var(--color-text);
  transition: opacity var(--transition-fast);
}

.header__logo:hover {
  opacity: 0.7;
}

.header__logo-icon {
  color: var(--color-accent);
  flex-shrink: 0;
}

.header__nav-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.header__nav-link:hover {
  color: var(--color-text);
  background: rgba(0, 0, 0, 0.04);
}

.header__nav-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* --- Hero --- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  padding: 5rem 0 4.5rem;
  overflow: hidden;
  background: #f7f7fb;
}

.hero__bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero__svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__inner {
  position: relative;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  padding: 0.375rem 1rem;
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
  background: var(--color-accent-light);
  border: 1px solid rgba(79, 70, 229, 0.12);
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero__company {
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
  opacity: 0.85;
}

.hero__title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  line-height: 1.7;
  color: var(--color-text-secondary);
  max-width: 580px;
  margin: 0 auto 2.5rem;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: #ffffff;
  background: var(--color-accent);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: 0 1px 3px rgba(79, 70, 229, 0.2), 0 4px 12px rgba(79, 70, 229, 0.15);
}

.hero__cta:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.25), 0 8px 24px rgba(79, 70, 229, 0.2);
}

.hero__cta:active {
  transform: translateY(0);
}

.hero__cta:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.hero__cta svg {
  transition: transform var(--transition-fast);
}

.hero__cta:hover svg {
  transform: translateY(2px);
}

/* --- Animations: entrance --- */
.animate-in {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeInUp 0.7s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.animate-in[data-delay="1"] { animation-delay: 0.1s; }
.animate-in[data-delay="2"] { animation-delay: 0.2s; }
.animate-in[data-delay="3"] { animation-delay: 0.35s; }

@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Scroll animations --- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Services --- */
.services {
  padding: var(--section-padding) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.services__header {
  text-align: center;
  max-width: 560px;
  margin: 0 auto 3.5rem;
}


.services__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.services__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- Services Grid --- */
.services__grid {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  max-width: 800px;
  margin: 0 auto;
}

/* --- Service Card --- */
.card {
  position: relative;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem 2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  cursor: pointer;
  text-decoration: none;
  color: inherit;

  /* Scroll animation */
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
}

.card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.card:hover {
  border-color: var(--color-border-hover);
  box-shadow: 0 4px 20px var(--color-shadow), 0 8px 40px var(--color-shadow);
  transform: translateY(-2px);
}

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

/* --- Card visual (image container) --- */
.card__visual {
  flex-shrink: 0;
  width: 160px;
  height: 100px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #f0f0f4;
  transition: transform var(--transition-base);
}

.card:hover .card__visual {
  transform: scale(1.03);
}

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

.card:hover .card__img {
  transform: scale(1.06);
}

.card__img--svg {
  width: 100%;
  height: 100%;
}

/* --- Card content --- */
.card__content {
  flex: 1;
  min-width: 0;
}

.card__category {
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
  margin-bottom: 0.375rem;
}

.card__name {
  font-size: var(--font-size-lg);
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.card__link-row {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-accent);
  transition: gap var(--transition-fast);
}

.card:hover .card__link-row {
  gap: 0.625rem;
}

.card__link-row svg {
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.card:hover .card__link-row svg {
  transform: translateX(2px);
}

/* Card color accent on left border */
.card--format {
  border-left: 3px solid #c7d2fe;
}

.card--format:hover {
  border-left-color: #4f46e5;
}

.card--review {
  border-left: 3px solid #fde68a;
}

.card--review:hover {
  border-left-color: #d97706;
}

.card--print {
  border-left: 3px solid #a7f3d0;
}

.card--print:hover {
  border-left-color: #059669;
}

.card--multi {
  border-left: 3px solid #c7d2fe;
}

.card--multi:hover {
  border-left-color: #6366f1;
}

/* --- Footer --- */
.footer {
  padding: 2.5rem 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text);
}

.footer__logo-icon {
  color: var(--color-accent);
}

.footer__copy {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* --- Contact CTA --- */
.contact-cta {
  margin-top: 4rem;
  padding: 2.5rem 2rem;
  background: var(--color-accent-light);
  border: 1px solid rgba(79, 70, 229, 0.1);
  border-radius: 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.contact-cta__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  font-weight: 400;
  margin: 0;
}

.contact-cta__link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  padding: 0.75rem 2rem;
  background: #fff;
  border: 1.5px solid rgba(79, 70, 229, 0.2);
  border-radius: 100px;
  transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.06);
}

.contact-cta__link:hover {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.22);
  transform: translateY(-2px);
}

.contact-cta__link:hover svg path {
  stroke: #fff;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --section-padding: 4rem;
  }

  .hero {
    padding: 4rem 0 3rem;
  }

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

  .hero__subtitle {
    font-size: var(--font-size-base);
  }

  .services__title {
    font-size: var(--font-size-2xl);
  }

  .card {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    padding: 1.5rem;
  }

  .card__visual {
    width: 100%;
    height: 140px;
  }

  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: var(--font-size-2xl);
  }

  .hero__badge {
    font-size: 0.6875rem;
  }

  .card {
    padding: 1.25rem;
  }
}

@media (min-width: 1200px) {
  .hero__title {
    font-size: var(--font-size-5xl);
  }
}