/* PortSignum – Modern B2B Industrial Display Website
   Design System: Dark header, clean white content sections,
   Teal (#3db7c0) only as accent (buttons, hover, logo).
   All labels, tags, chips in dark/gray tones.
   Fonts: Oswald (headlines), Raleway (body) via local @font-face
*/

/* ============================================================
   FONTS
   ============================================================ */
@font-face {
  font-family: 'Raleway';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: local(''),
       url('../fonts/raleway-v28-latin-regular.woff2') format('woff2'),
       url('../fonts/raleway-v28-latin-regular.woff') format('woff');
}

@font-face {
  font-family: 'Oswald';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: local(''),
       url('../fonts/oswald-v49-latin-regular.woff2') format('woff2'),
       url('../fonts/oswald-v49-latin-regular.woff') format('woff');
}

/* ============================================================
   VARIABLES
   ============================================================ */
:root {
  --teal:        #3db7c0;
  --teal-dark:   #2a9aa3;
  --dark:        #111827;
  --dark-mid:    #1f2937;
  --dark-light:  #374151;
  --gray:        #6b7280;
  --gray-light:  #f3f4f6;
  --white:       #ffffff;
  --text:        #1f2937;
  --text-light:  #4b5563;
  --border:      #e5e7eb;
  --font-head:   'Oswald', Arial, sans-serif;
  --font-body:   'Raleway', Arial, sans-serif;
  --max-width:   1200px;
  --radius:      6px;
  --shadow:      0 2px 12px rgba(0,0,0,0.08);
  --shadow-lg:   0 8px 32px rgba(0,0,0,0.14);
  --transition:  0.2s ease;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  color: var(--text);
  background: var(--white);
  line-height: 1.6;
}

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

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

a:hover {
  color: var(--teal-dark);
}

ul {
  list-style: none;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text);
}

h1 { font-size: clamp(1.8rem, 4vw, 3rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-light);
}

.text-teal  { color: var(--teal); }
.text-white { color: var(--white); }
.text-dark  { color: var(--dark); }

/* ============================================================
   LAYOUT UTILITIES
   ============================================================ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section--gray {
  background: var(--gray-light);
}

.section--dark {
  background: var(--dark);
  color: var(--white);
}

.section--dark h2,
.section--dark h3 {
  color: var(--white);
}

.section--dark p {
  color: #9ca3af;
}

.section-label {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 12px;
  display: block;
}

.section-title {
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 640px;
  margin-bottom: 48px;
}

.section--dark .section-subtitle {
  color: #9ca3af;
}

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

.text-center .section-subtitle {
  margin-left: auto;
  margin-right: auto;
}

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--dark);
  border-bottom: 1px solid var(--dark-light);
}

.navbar__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo img {
  height: 32px;
  width: auto;
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.navbar__nav > li {
  position: relative;
}

.navbar__nav > li > a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  color: #d1d5db;
  font-family: var(--font-body);
  font-size: 0.9rem;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition);
}

.navbar__nav > li > a:hover,
.navbar__nav > li > a.active {
  background: var(--dark-mid);
  color: var(--white);
}

/* Dropdown */
.navbar__nav .dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: var(--dark-mid);
  border: 1px solid var(--dark-light);
  border-radius: var(--radius);
  padding: 16px 0 8px;
  box-shadow: var(--shadow-lg);
}

.navbar__nav > li:hover .dropdown {
  display: block;
}

.dropdown a {
  display: block;
  padding: 10px 20px;
  color: #d1d5db;
  font-size: 0.88rem;
  transition: background var(--transition), color var(--transition);
}

.dropdown a:hover {
  background: var(--dark-light);
  color: var(--white);
}

.dropdown__group-label {
  padding: 10px 20px 4px;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #9ca3af;
  display: block;
}

.dropdown__divider {
  border: none;
  border-top: 1px solid var(--dark-light);
  margin: 6px 0;
}

/* Flags */
.navbar__flags {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: 16px;
  padding-left: 16px;
  border-left: 1px solid var(--dark-light);
}

.navbar__flags img {
  width: 28px;
  height: auto;
  border-radius: 2px;
  opacity: 0.75;
  transition: opacity var(--transition);
}

.navbar__flags img:hover {
  opacity: 1;
}

/* Mobile menu toggle */
.navbar__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  color: var(--white);
  font-size: 1.4rem;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: calc(100vh - 160px);
  background: var(--dark);
  display: flex;
  align-items: center;
  padding-top: 64px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  display: none;
}

.hero__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero__label {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #6b7280;
  margin-bottom: 20px;
  display: block;
}

.hero__title {
  color: var(--white);
  margin-bottom: 24px;
}

.hero__title span {
  color: var(--white);
}

.hero__sub {
  font-size: 1.1rem;
  color: #9ca3af;
  margin-bottom: 40px;
  max-width: 480px;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__visual img {
  max-width: 100%;
  border-radius: var(--radius);
  opacity: 0.9;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
  text-decoration: none;
}

.btn--primary {
  background: var(--teal);
  color: var(--white);
  border-color: var(--teal);
}

.btn--primary:hover {
  background: var(--teal-dark);
  border-color: var(--teal-dark);
  color: var(--white);
}

.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: #4b5563;
}

.btn--outline:hover {
  border-color: var(--teal);
  color: var(--teal);
}

.btn--outline-dark {
  background: transparent;
  color: var(--dark);
  border-color: var(--dark-light);
}

.btn--outline-dark:hover {
  background: var(--dark);
  border-color: var(--dark);
  color: var(--white);
}

/* ============================================================
   AREAS – 3 main business areas (Startseite)
   ============================================================ */
.areas {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--border);
}

.area-card {
  background: var(--white);
  padding: 48px 36px;
  transition: background var(--transition);
}

.area-card:hover {
  background: var(--gray-light);
}

.area-card__number {
  font-family: var(--font-head);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 12px;
  display: block;
}

.area-card h3 {
  margin-bottom: 12px;
  color: var(--dark);
  font-size: 1.3rem;
}

.area-card p {
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.area-card .link-more {
  font-size: 0.85rem;
  font-family: var(--font-body);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition), color var(--transition);
  border-bottom: 1px solid var(--border);
  padding-bottom: 2px;
}

.area-card .link-more:hover {
  gap: 10px;
  color: var(--teal);
  border-color: var(--teal);
}

/* ============================================================
   PRODUCT CARDS
   ============================================================ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.product-card__img {
  background: var(--gray-light);
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.product-card__img img {
  max-height: 100%;
  width: auto;
  object-fit: contain;
  margin: 0 auto;
}

.product-card__body {
  padding: 24px;
}

.product-card__tag {
  display: inline-block;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray);
  background: var(--gray-light);
  border-radius: 3px;
  padding: 3px 10px;
  margin-bottom: 12px;
}

.product-card__body h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
  color: var(--dark);
}

.product-card__body p {
  font-size: 0.9rem;
  margin-bottom: 20px;
}

.product-card__body .btn {
  font-size: 0.8rem;
  padding: 8px 18px;
}

/* ============================================================
   MONITOR SIZE CHIPS
   ============================================================ */
.size-range {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 32px 0;
  justify-content: center;
  flex-wrap: wrap;
}

.size-chip {
  background: var(--dark-mid);
  border: 1px solid var(--dark-light);
  color: #d1d5db;
  border-radius: var(--radius);
  padding: 10px 20px;
  font-family: var(--font-head);
  font-size: 1rem;
  text-align: center;
  transition: background var(--transition), border-color var(--transition);
}

.size-chip--active,
.size-chip:hover {
  background: var(--dark-light);
  border-color: var(--gray);
  color: var(--white);
}

/* ============================================================
   SPECS TABLE
   ============================================================ */
.specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-top: 24px;
}

.specs-table th {
  background: var(--dark);
  color: var(--white);
  padding: 12px 16px;
  text-align: left;
  font-family: var(--font-head);
  font-weight: 400;
  letter-spacing: 0.05em;
}

.specs-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-light);
}

.specs-table tr:nth-child(even) td {
  background: var(--gray-light);
}

/* ============================================================
   FEATURE LIST
   ============================================================ */
.feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 32px;
  margin-top: 48px;
}

.feature-item {
  display: flex;
  gap: 16px;
}

.feature-item__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  background: var(--gray-light);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dark-light);
  font-size: 1.1rem;
  margin-top: 2px;
}

.feature-item h4 {
  font-size: 1rem;
  margin-bottom: 6px;
  color: var(--dark);
}

.feature-item p {
  font-size: 0.88rem;
  margin-bottom: 0;
}

/* ============================================================
   CTA STRIP
   ============================================================ */
.cta-strip {
  background: var(--dark-mid);
  padding: 64px 0;
  border-top: 3px solid var(--teal);
}

.cta-strip__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.cta-strip h2 {
  color: var(--white);
  margin-bottom: 8px;
}

.cta-strip p {
  color: #9ca3af;
  margin-bottom: 0;
  font-size: 1.05rem;
}

.btn--white {
  background: var(--white);
  color: var(--dark);
  border-color: var(--white);
  white-space: nowrap;
}

.btn--white:hover {
  background: transparent;
  border-color: var(--white);
  color: var(--white);
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  background: var(--dark);
  color: #9ca3af;
  padding: 64px 0 32px;
  font-size: 0.9rem;
}

.footer__grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer__brand img {
  height: 28px;
  width: auto;
  margin-bottom: 20px;
}

.footer__brand p {
  font-size: 0.88rem;
  color: #6b7280;
  margin-bottom: 0;
}

.footer__col h4 {
  font-family: var(--font-head);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 20px;
}

.footer__col ul li {
  margin-bottom: 10px;
}

.footer__col ul li a {
  color: #6b7280;
  font-size: 0.88rem;
  transition: color var(--transition);
}

.footer__col ul li a:hover {
  color: var(--teal);
}

.footer__contact p {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 0.88rem;
  color: #6b7280;
}

.footer__contact a {
  color: #6b7280;
}

.footer__contact a:hover {
  color: var(--teal);
}

.footer__bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 24px 0;
  border-top: 1px solid var(--dark-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: #4b5563;
}

.footer__bottom a {
  color: #4b5563;
}

.footer__bottom a:hover {
  color: var(--teal);
}

/* ============================================================
   PAGE HEADER (inner pages)
   ============================================================ */
.page-header {
  background: var(--dark);
  padding: 120px 0 64px;
}

.page-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.page-header__breadcrumb {
  font-size: 0.8rem;
  color: #9ca3af;
  margin-bottom: 16px;
}

.page-header__breadcrumb a {
  color: #E04050;
}

.page-header__breadcrumb a:hover {
  color: #ff6070;
}

.page-header h1 {
  color: var(--white);
  margin-bottom: 16px;
}

.page-header p {
  color: #9ca3af;
  font-size: 1.1rem;
  max-width: 640px;
  margin-bottom: 0;
}

/* ============================================================
   CONTACT FORM
   ============================================================ */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group--full {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.85rem;
  font-family: var(--font-head);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text);
  background: var(--white);
  transition: border-color var(--transition);
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--teal);
}

.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

.form-error {
  font-size: 0.82rem;
  color: #ef4444;
}

.form-success {
  padding: 16px 20px;
  background: rgba(61,183,192,0.1);
  border: 1px solid var(--teal);
  border-radius: var(--radius);
  color: var(--teal);
  font-size: 0.95rem;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .areas {
    grid-template-columns: 1fr;
  }

  .hero__inner {
    grid-template-columns: 1fr;
  }

  .hero__visual {
    display: none;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }

  .navbar__nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--dark);
    border-top: 1px solid var(--dark-light);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 0;
    gap: 0;
  }

  .navbar__nav.open {
    display: flex;
  }

  .navbar__nav > li > a {
    border-radius: 0;
    padding: 14px 24px;
  }

  .navbar__nav .dropdown {
    position: static;
    border: none;
    border-radius: 0;
    box-shadow: none;
    background: var(--dark-mid);
    display: block;
  }

  .navbar__toggle {
    display: block;
  }

  .navbar__flags {
    margin-left: 8px;
    padding-left: 8px;
  }

  .hero__inner {
    padding: 60px 24px;
  }

  .hero__actions {
    flex-direction: column;
  }

  .area-card {
    padding: 36px 24px;
  }

  .product-grid {
    grid-template-columns: 1fr;
  }

  .feature-list {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-group--full {
    grid-column: 1;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

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

  .page-header {
    padding: 96px 0 48px;
  }
}