/* ============================================================
   ARCTIC TECHNICAL MINIMALISM
   Niko Laaksonlaita – Geophysics & Geo-data Consultant
   Palette: northern, geological, sea/snow/rock, technical
   ============================================================ */

/* ---- VARIABLES ---- */
:root {
  --bg-light:          #F5F7F8;
  --bg-cool:           #E8EEF2;
  --bg-white:          #FFFFFF;
  --bg-dark:           #0F1B24;
  --bg-dark-mid:       #162534;

  --text-primary:      #16202A;
  --text-muted:        #5B6673;
  --text-on-dark:      #D4E0E8;
  --text-on-dark-muted:#7A9DB5;

  --accent:            #2F6F88;
  --accent-light:      #4C8FA3;
  --accent-hover:      #245A70;

  --card-bg:           #FFFFFF;
  --border:            #D6DEE5;
  --border-dark:       rgba(255,255,255,0.09);

  --section-pad:       5.5rem;
  --section-pad-sm:    3.5rem;
  --container:         1140px;

  --radius:            8px;
  --radius-lg:         14px;
  --shadow:            0 2px 10px rgba(15,27,36,0.07);
  --shadow-md:         0 6px 24px rgba(15,27,36,0.11);
  --transition:        0.17s ease;
}

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

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-white);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { text-decoration: none; color: inherit; transition: color var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

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

/* ---- TYPOGRAPHY ---- */
h1, h2, h3, h4 { font-weight: 600; line-height: 1.2; color: inherit; }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 2.4vw, 1.9rem); }
h3 { font-size: 1.08rem; font-weight: 600; }

.section-label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 10px;
}

.section-intro {
  font-size: 1rem;
  color: var(--text-muted);
  max-width: 50rem;
  margin-top: 10px;
  margin-bottom: 44px;
  line-height: 1.72;
}

.on-dark .section-label   { color: var(--accent-light); }
.on-dark h2               { color: var(--text-on-dark); }
.on-dark .section-intro   { color: var(--text-on-dark-muted); }
.on-dark p                { color: var(--text-on-dark-muted); }

/* ---- BUTTONS ---- */
.btn-primary {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--accent); color: #fff;
  padding: 12px 22px; border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 500; border: none; cursor: pointer;
  transition: background var(--transition);
  text-decoration: none; font-family: inherit;
}
.btn-primary:hover { background: var(--accent-hover); color: #fff; }

.btn-outline {
  display: inline-flex; align-items: center; gap: 7px;
  background: transparent; color: var(--text-primary);
  padding: 11px 22px; border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 500;
  border: 1.5px solid var(--border); cursor: pointer;
  transition: border-color var(--transition), color var(--transition);
  text-decoration: none; font-family: inherit;
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-outline-light {
  display: inline-flex; align-items: center; gap: 7px;
  background: transparent; color: rgba(255,255,255,0.9);
  padding: 11px 22px; border-radius: var(--radius);
  font-size: 0.9rem; font-weight: 500;
  border: 1.5px solid rgba(255,255,255,0.35); cursor: pointer;
  transition: border-color var(--transition), background var(--transition);
  text-decoration: none; font-family: inherit;
}
.btn-outline-light:hover {
  border-color: rgba(255,255,255,0.75);
  background: rgba(255,255,255,0.07);
  color: #fff;
}

/* ---- HEADER ---- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100; padding: 14px 0;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}
.site-header.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 1px 0 var(--border);
  padding: 10px 0;
}

.header-inner {
  display: flex; align-items: center; gap: 20px;
}

.brand {
  display: flex; align-items: center; gap: 11px;
  flex-shrink: 0; text-decoration: none;
}
.brand-logo-img {
  width: 34px; height: 34px;
  object-fit: contain; flex-shrink: 0;
  border-radius: 4px;
}
.brand-text { display: flex; flex-direction: column; }
.brand-name {
  font-size: 0.88rem; font-weight: 700;
  letter-spacing: 0.05em; text-transform: uppercase;
  color: #fff; line-height: 1.2;
  transition: color var(--transition);
}
.brand-tagline {
  font-size: 0.7rem; color: rgba(255,255,255,0.55);
  font-weight: 400; margin-top: 1px;
  transition: color var(--transition);
}
.site-header.scrolled .brand-name  { color: var(--text-primary); }
.site-header.scrolled .brand-tagline { color: var(--text-muted); }

.site-nav {
  display: flex; align-items: center;
  gap: 24px; margin-left: auto;
}
.site-nav a {
  font-size: 0.84rem; color: rgba(255,255,255,0.78); font-weight: 400;
}
.site-nav a:hover { color: #fff; }
.site-header.scrolled .site-nav a { color: var(--text-muted); }
.site-header.scrolled .site-nav a:hover { color: var(--accent); }

.lang-switch {
  font-size: 0.75rem; font-weight: 600;
  color: rgba(255,255,255,0.65);
  border: 1px solid rgba(255,255,255,0.3);
  padding: 4px 9px; border-radius: 4px;
  letter-spacing: 0.07em;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.lang-switch:hover { color: #fff; border-color: rgba(255,255,255,0.7); }
.site-header.scrolled .lang-switch { color: var(--accent); border-color: var(--accent); }
.site-header.scrolled .lang-switch:hover { background: var(--accent); color: #fff; }

.nav-contact-btn {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 8px 17px !important;
  border-radius: var(--radius) !important;
  font-size: 0.84rem !important;
  font-weight: 500 !important;
  border: none !important;
}
.nav-contact-btn:hover { background: var(--accent-hover) !important; color: #fff !important; }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; align-items: center;
  gap: 5px; padding: 10px 8px; background: none; border: none; cursor: pointer;
  margin-left: auto; min-width: 44px; min-height: 44px;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: rgba(255,255,255,0.9); border-radius: 2px;
  pointer-events: none;
  transition: transform 0.24s, opacity 0.24s;
}
.site-header.scrolled .nav-toggle span { background: var(--text-primary); }

/* ---- MOBILE NAV ---- */
.mobile-nav {
  display: none; position: fixed;
  inset: 0; z-index: 200;
  background: var(--bg-dark);
  flex-direction: column; justify-content: center;
  align-items: center; gap: 28px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  font-size: 1.3rem; font-weight: 500;
  color: rgba(255,255,255,0.8); text-decoration: none;
}
.mobile-nav a:hover { color: #fff; }
.mobile-nav-close {
  position: absolute; top: 18px; right: 20px;
  background: none; border: none;
  color: rgba(255,255,255,0.65); font-size: 2rem;
  cursor: pointer; line-height: 1; padding: 6px;
}

/* ---- HERO ---- */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: flex-end;
  padding-bottom: 80px; overflow: hidden;
  background: var(--bg-dark);
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
}
.hero-bg video,
.hero-bg img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
}
.hero-overlay {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(
    to bottom,
    rgba(15,27,36,0.30) 0%,
    rgba(15,27,36,0.48) 45%,
    rgba(15,27,36,0.72) 100%
  );
}
.hero-content {
  position: relative; z-index: 2; width: 100%;
}
.hero-content .container {
  padding-top: 110px;
}
.hero-headline {
  color: #fff;
  max-width: 820px;
  margin-bottom: 18px;
}
.hero-sub {
  font-size: 1.02rem;
  color: rgba(255,255,255,0.78);
  max-width: 580px;
  margin-bottom: 34px;
  line-height: 1.72;
}
.hero-actions {
  display: flex; flex-wrap: wrap;
  gap: 12px; margin-bottom: 40px;
}
.hero-cred {
  display: flex; flex-wrap: wrap;
  gap: 8px;
}
.hero-cred-item {
  font-size: 0.74rem;
  color: rgba(255,255,255,0.45);
  padding: 4px 10px;
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 3px;
  letter-spacing: 0.04em;
}

/* ---- SECTION BASE ---- */
.section        { padding: var(--section-pad) 0; }
.section-sm     { padding: var(--section-pad-sm) 0; }
.section-light  { background: var(--bg-light); }
.section-cool   { background: var(--bg-cool); }
.section-white  { background: var(--bg-white); }
.section-dark   { background: var(--bg-dark); }

/* ---- OUTCOME CARDS ---- */
.outcome-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.outcome-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.outcome-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--accent-light);
}
.outcome-number {
  display: block;
  font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.13em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px;
}
.outcome-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.outcome-card p  { font-size: 0.9rem; color: var(--text-muted); line-height: 1.65; }

/* ---- WORK AREA TABS ---- */
.tabs-wrapper { margin-top: 8px; }

.tabs-nav {
  display: flex; gap: 0;
  border-bottom: 2px solid var(--border);
  overflow-x: auto;
  scrollbar-width: none; -ms-overflow-style: none;
}
.tabs-nav::-webkit-scrollbar { display: none; }

.tab-btn {
  padding: 11px 20px;
  border: none; background: none;
  font-size: 0.85rem; font-weight: 500;
  color: var(--text-muted); cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px; white-space: nowrap;
  transition: color var(--transition), border-color var(--transition);
  font-family: inherit;
}
.tab-btn:hover { color: var(--text-primary); }
.tab-btn[aria-selected="true"] {
  color: var(--accent); border-bottom-color: var(--accent);
}

.tab-panel { padding: 38px 0; }
.tab-panel[hidden] { display: none; }

.tab-panel-grid {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 56px; align-items: start;
}
.tab-panel-main h3 {
  font-size: 1.3rem; margin-bottom: 14px;
}
.tab-panel-main > p {
  font-size: 0.93rem; color: var(--text-muted);
  line-height: 1.72; margin-bottom: 28px;
}
.tab-block-title {
  font-size: 0.7rem; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--text-primary); margin-bottom: 12px; display: block;
}
.tab-questions { padding: 0; margin-bottom: 0; }
.tab-questions li {
  font-size: 0.87rem; color: var(--text-muted);
  padding: 6px 0 6px 14px;
  border-left: 2px solid var(--border);
  margin-bottom: 8px; line-height: 1.52;
}

.tab-sidebar { display: flex; flex-direction: column; gap: 30px; }

.method-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.method-chip {
  font-size: 0.78rem; color: var(--accent);
  background: rgba(47,111,136,0.08);
  border: 1px solid rgba(47,111,136,0.2);
  padding: 4px 10px; border-radius: 4px; font-weight: 500;
}

.tab-deliverables { padding: 0; }
.tab-deliverables li {
  font-size: 0.85rem; color: var(--text-muted);
  padding: 5px 0 5px 16px; position: relative; line-height: 1.5;
}
.tab-deliverables li::before {
  content: ''; position: absolute;
  left: 0; top: 11px;
  width: 5px; height: 5px;
  border-radius: 50%; background: var(--accent-light);
}

/* ---- SERVICES ---- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.service-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition);
}
.service-card:hover { box-shadow: var(--shadow-md); }
.service-icon {
  width: 34px; height: 34px;
  background: rgba(47,111,136,0.09);
  border-radius: 8px; display: flex;
  align-items: center; justify-content: center;
  margin-bottom: 14px; flex-shrink: 0;
}
.service-icon svg { width: 17px; height: 17px; stroke: var(--accent); }
.service-card h3 { font-size: 0.97rem; margin-bottom: 10px; }
.service-card p  { font-size: 0.87rem; color: var(--text-muted); line-height: 1.65; }

/* ---- METHODS (DARK TECHNICAL SECTION) ---- */
.methods-section {
  position: relative; background: var(--bg-dark); overflow: hidden;
}
.methods-section .container { position: relative; z-index: 1; }

.technical-profile-bg { position: relative; overflow: hidden; }

.profile-overlay-gpr {
  position: absolute; top: 0; right: 0; bottom: 0; width: 50%;
  background-size: cover; background-position: center;
  filter: grayscale(100%); opacity: 0.08;
  mix-blend-mode: luminosity; pointer-events: none; z-index: 0;
}
.profile-overlay-mt {
  position: absolute; top: 0; left: 0; bottom: 0; width: 50%;
  background-size: cover; background-position: center;
  filter: grayscale(100%); opacity: 0.07;
  mix-blend-mode: luminosity; pointer-events: none; z-index: 0;
}

.methods-groups {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.method-group { display: flex; flex-direction: column; gap: 8px; }
.method-group-title {
  font-size: 0.72rem; font-weight: 600;
  letter-spacing: 0.11em; text-transform: uppercase;
  color: var(--text-on-dark); margin-bottom: 8px;
}
.method-chip-dark {
  font-size: 0.8rem; color: rgba(255,255,255,0.68);
  background: rgba(255,255,255,0.055);
  border: 1px solid rgba(255,255,255,0.11);
  padding: 6px 12px; border-radius: 4px;
  display: inline-flex; width: fit-content;
  line-height: 1.4;
}

/* ---- EXPERIENCE ---- */
.experience-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 64px; align-items: start;
}
.experience-text p {
  font-size: 0.94rem; color: var(--text-muted);
  line-height: 1.75; margin-bottom: 20px;
}
.experience-bullets { padding: 0; }
.experience-bullets li {
  display: flex; align-items: flex-start; gap: 12px;
  font-size: 0.87rem; color: var(--text-muted);
  padding: 10px 0; border-bottom: 1px solid var(--border); line-height: 1.5;
}
.experience-bullets li:last-child { border-bottom: none; }
.experience-bullets li::before {
  content: ''; display: block;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); margin-top: 6px; flex-shrink: 0;
}

/* ---- CLIENTS ---- */
.clients-wrapper { text-align: center; }
.clients-note {
  font-size: 0.9rem; color: var(--text-muted);
  max-width: 520px; margin: 0 auto;
  font-style: italic; line-height: 1.7;
}
.clients-placeholder-row {
  display: flex; justify-content: center;
  align-items: center; gap: 16px;
  flex-wrap: wrap; margin-top: 32px;
}
.client-placeholder-card {
  width: 150px; height: 58px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.7rem; color: #c2cdd5;
  letter-spacing: 0.08em; text-transform: uppercase;
  background: rgba(214,222,229,0.12);
}

/* ---- ABOUT ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1.8fr 1fr;
  gap: 64px; align-items: start;
}
.about-text p {
  font-size: 0.94rem; color: var(--text-muted);
  line-height: 1.75; margin-bottom: 18px;
}
.about-portrait-wrap { position: relative; }
.about-portrait {
  width: 100%; border-radius: var(--radius-lg);
  aspect-ratio: 4/5; object-fit: cover;
  object-position: top center;
  box-shadow: var(--shadow-md); border: 1px solid var(--border);
}

/* ---- CONTACT ---- */
.contact-section { background: var(--bg-dark); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 72px; align-items: start;
}
.contact-intro h2 { color: var(--text-on-dark); }
.contact-intro p {
  font-size: 0.93rem; color: var(--text-on-dark-muted);
  line-height: 1.72; margin-top: 14px;
}
.contact-meta {
  margin-top: 28px; font-size: 0.82rem;
  color: rgba(255,255,255,0.35); line-height: 1.65;
}

.contact-form-wrap {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg); padding: 32px;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px 18px;
}
.form-field { display: flex; flex-direction: column; gap: 5px; }
.form-field.full { grid-column: 1 / -1; }

.form-field label {
  font-size: 0.77rem; font-weight: 500;
  color: rgba(255,255,255,0.55); letter-spacing: 0.03em;
}
.form-field input,
.form-field select,
.form-field textarea {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.11);
  border-radius: var(--radius);
  padding: 10px 13px; font-size: 0.87rem;
  color: var(--text-on-dark); outline: none;
  font-family: inherit;
  transition: border-color var(--transition), background var(--transition);
}
.form-field input::placeholder,
.form-field textarea::placeholder { color: rgba(255,255,255,0.22); }
.form-field select option { background: var(--bg-dark); color: var(--text-on-dark); }
.form-field select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  padding-right: 38px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='rgba(255%2C255%2C255%2C0.45)' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px 16px;
  cursor: pointer;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--accent-light);
  background-color: rgba(255,255,255,0.075);
}
.form-field textarea { min-height: 96px; resize: vertical; }

.form-consent {
  display: flex; align-items: flex-start;
  gap: 10px; margin-top: 6px; grid-column: 1 / -1;
}
.form-consent input[type="checkbox"] {
  width: 15px; height: 15px;
  margin-top: 3px; flex-shrink: 0;
  accent-color: var(--accent);
}
.form-consent label {
  font-size: 0.78rem; color: rgba(255,255,255,0.45); line-height: 1.5;
}
.form-submit { margin-top: 20px; grid-column: 1 / -1; }

/* ---- FOOTER ---- */
.site-footer {
  background: var(--bg-dark);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: 24px 0;
}
.footer-inner {
  display: flex; justify-content: space-between;
  align-items: center; gap: 16px; flex-wrap: wrap;
}
.footer-copy    { font-size: 0.78rem; color: rgba(255,255,255,0.3); }
.footer-tagline { font-size: 0.78rem; color: rgba(255,255,255,0.22); }

/* ---- DIVIDER LINE ---- */
.section-divider {
  border: none; border-top: 1px solid var(--border);
  margin: 0;
}

/* ---- ACCESSIBILITY ---- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px; border-radius: 2px;
}

/* ---- REDUCED MOTION ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  html { scroll-behavior: auto; }
}

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
  .methods-groups { grid-template-columns: repeat(2, 1fr); }
  .tab-panel-grid { grid-template-columns: 1fr; gap: 28px; }
  .experience-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 860px) {
  :root { --section-pad: 4rem; --section-pad-sm: 2.5rem; }

  .site-nav { display: none; }
  .nav-toggle { display: flex; }

  .outcome-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; gap: 36px; }
  .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .contact-form-wrap { padding: 24px; }

  .hero-headline { font-size: clamp(1.75rem, 5.5vw, 2.4rem); }

  .hero { padding-bottom: 60px; }
  .hero-content .container { padding-top: 84px; }
  .outcome-card { padding: 22px 24px; }
  .service-card  { padding: 20px 22px; }
  .tab-panel     { padding: 28px 0; }
}

@media (max-width: 600px) {
  :root { --section-pad: 3rem; --section-pad-sm: 2rem; }

  .container { padding: 0 18px; }

  .brand-tagline { display: none; }
  .brand { flex-shrink: 1; }

  .services-grid { grid-template-columns: 1fr; }
  .methods-groups { grid-template-columns: 1fr 1fr; gap: 18px; }
  .form-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .footer-inner { flex-direction: column; align-items: flex-start; }

  .hero { padding-bottom: 48px; }
  .hero-content .container { padding-top: 70px; }
  .hero-sub { font-size: 0.95rem; }

  .section-intro { margin-bottom: 32px; }

  .outcome-card { padding: 16px 18px; }
  .service-card  { padding: 14px 16px; }

  .tab-btn { padding: 9px 14px; font-size: 0.81rem; }
  .tab-panel { padding: 20px 0; }
  .tab-panel-grid { gap: 18px; }

  .experience-grid { gap: 24px; }
  .about-grid { gap: 20px; }
  .about-portrait { max-height: 320px; }

  .contact-grid { gap: 24px; }
  .contact-form-wrap { padding: 16px 18px; }
}