/* ============================================
   VÄRMEKALKYL.SE - MAIN CSS
   Komplett styling för kalkylator och affiliates
   ============================================ */

/* ============================================
   CSS VARIABLES
   ============================================ */

:root {
  /* Colors */
  --bg: #F7F9FB;
  --card: #ffffff;
  --text: #0F172A;
  --muted: #475569;
  --border: #E5E7EB;
  --primary: #1E3A8A;
  --success: #16A34A;
  --accent: #0EA5E9;
  --warning: #F59E0B;
  --danger: #EF4444;
  
  /* Effects */
  --shadow: 0 8px 22px rgba(2, 6, 23, 0.08);
  --radius: 14px;
  
  /* Spacing */
  --gap: 18px;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0F172A;
    --card: #1E293B;
    --text: #F1F5F9;
    --muted: #94A3B8;
    --border: #334155;
    --primary: #3B82F6;
    --success: #22C55E;
    --shadow: 0 8px 22px rgba(0, 0, 0, 0.3);
  }
}

/* ============================================
   RESET & BASE
   ============================================ */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   LAYOUT
   ============================================ */

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: var(--gap);
}

.content {
  max-width: 800px;
  margin: 0 auto;
}

/* ============================================
   HEADER
   ============================================ */

.site-header {
  max-width: 980px;
  margin: 0 auto;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--primary);
}

.brand-tag {
  font-size: 0.75rem;
  color: var(--muted);
  font-weight: 500;
}

.nav {
  display: flex;
  gap: 24px;
  align-items: center;
}

.nav a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--primary);
}

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin: 0 0 16px 0;
  line-height: 1.2;
}

h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 32px 0 16px 0;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 24px 0 12px 0;
}

p {
  margin: 0 0 16px 0;
}

.lead {
  font-size: 1.125rem;
  color: var(--muted);
  line-height: 1.7;
}

.small {
  font-size: 0.875rem;
}

.muted {
  color: var(--muted);
}

/* ============================================
   CARDS
   ============================================ */

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 24px;
  margin: 24px 0;
  box-shadow: var(--shadow);
}

.calculator-card {
  border: 2px solid var(--success);
  box-shadow: 0 8px 22px rgba(22, 163, 74, 0.12);
}

.calculator-card:hover {
  box-shadow: 0 12px 28px rgba(22, 163, 74, 0.18);
}

/* ============================================
   HERO
   ============================================ */

.hero {
  margin: 32px 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  align-items: start;
}

.hero-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.hero-card h2 {
  margin: 0 0 12px 0;
  font-size: 1.125rem;
}

.hero-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-card li {
  margin: 12px 0;
  padding-left: 24px;
  position: relative;
}

.hero-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

.mini {
  font-size: 0.8125rem;
  color: var(--muted);
  background: var(--bg);
  padding: 12px;
  border-radius: 6px;
  margin-top: 12px;
}

@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   TRUST INDICATORS
   ============================================ */

.trust {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin: 16px 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.8125rem;
  font-weight: 500;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  display: inline-block;
}

/* ============================================
   FORM ELEMENTS
   ============================================ */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin: 20px 0;
}

.field {
  margin: 20px 0;
}

label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
  font-size: 0.9375rem;
}

input[type="number"],
input[type="text"],
input[type="email"],
select,
textarea {
  width: 100%;
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: 8px;
  font-size: 1rem;
  font-family: inherit;
  background: var(--card);
  color: var(--text);
  transition: border-color 0.2s;
}

input[type="number"]:focus,
input[type="text"]:focus,
input[type="email"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.hint {
  font-size: 0.8125rem;
  color: var(--muted);
  margin-top: 6px;
}

/* Range sliders */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--border);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--success);
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--success);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Timing buttons */
.timing-btn {
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--card);
  color: var(--text);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.timing-btn:hover {
  border-color: var(--primary);
  background: var(--bg);
}

.timing-btn.selected {
  border-color: var(--success);
  background: var(--success);
  color: white;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
  display: inline-block;
  padding: 12px 24px;
  background: var(--primary);
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.9375rem;
  border: none;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.btn:hover {
  background: var(--accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.3);
}

.btn.secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn.secondary:hover {
  background: var(--primary);
  color: white;
}

/* ============================================
   RESULTS / KPI
   ============================================ */

.results {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin: 32px 0;
}

.kpi {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.05) 0%, transparent 100%);
  border: 2px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  transition: border-color 0.2s, transform 0.2s;
}

.kpi:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.kpi-label {
  font-size: 0.875rem;
  color: var(--muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.kpi-value {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

/* ============================================
   RECOMMENDATION CARDS
   ============================================ */

#recommendations {
  margin-top: 24px;
}

.rec-card {
  background: var(--card);
  border-radius: 12px;
  padding: 24px;
  margin: 20px 0;
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
  transition: transform 0.2s, box-shadow 0.2s;
  display: block !important;
  visibility: visible !important;
  opacity: 1 !important;
}

.rec-card:first-child {
  margin-top: 0;
}

.rec-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
}

.rec-card-primary {
  border-left-color: #10B981 !important;
  padding: 28px;
  margin: 24px 0;
}

.rec-card-greenely {
  border-left-color: #00D97E !important;
}

.rec-card-bixia {
  border-left-color: #0066CC !important;
}

.rec-card-hemsol {
  border-left-color: #F59E0B !important;
}

.rec-card-fortum {
  border-left-color: #7C3AED !important;
}

.rec-card-telinet {
  border-left-color: #FF6B35 !important;
}

.rec-card-dalakraft {
  border-left-color: #DC2626 !important;
}

.rec-card-eon {
  border-left-color: #EF4444 !important;
}

.rec-card-svealand {
  border-left-color: #0891B2 !important;
}

.rec-card-vattenfall {
  border-left-color: #0EA5E9 !important;
}

.rec-card-tibber {
  border-left-color: #10B981 !important;
}

.rec-card h3 {
  margin: 0 0 12px 0;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}

.rec-card p {
  margin: 0 0 20px 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 0.9375rem;
}

.rec-card .btn {
  display: inline-block;
  width: 100%;
  padding: 14px 24px;
  margin-top: 12px;
  font-size: 1rem;
}

/* Info boxes inside rec-cards */
.info-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin: 16px 0;
  line-height: 1.6;
}

.info-box strong {
  display: block;
  margin-bottom: 6px;
}

.info-box p {
  margin: 0;
}

.info-box.seasonal {
  background: linear-gradient(135deg, rgba(34, 197, 94, 0.1) 0%, transparent 100%);
  border-color: var(--success);
}

.info-box.warning {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, transparent 100%);
  border-color: var(--warning);
}

.info-box.danger {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.1) 0%, transparent 100%);
  border-color: var(--danger);
}

.info-box.info {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, transparent 100%);
  border-color: var(--accent);
}

/* ============================================
   COMPARE LIST
   ============================================ */

.compare-list {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

.compare-item {
  display: grid;
  grid-template-columns: 150px 1fr 120px 120px;
  gap: 20px;
  align-items: center;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: border-color 0.2s, transform 0.2s;
}

.compare-item:hover {
  border-color: var(--primary);
  transform: translateY(-1px);
}

.compare-item.current {
  background: linear-gradient(135deg, rgba(30, 58, 138, 0.05) 0%, transparent 100%);
  border-color: var(--primary);
  border-width: 2px;
  padding: 19px;
}

.compare-name {
  font-weight: 600;
  color: var(--text);
  font-size: 1rem;
}

.compare-desc {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 2px;
}

.compare-cost {
  text-align: right;
}

.compare-year {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2px;
}

.compare-month {
  font-size: 0.875rem;
  color: var(--muted);
}

.compare-savings {
  text-align: right;
  font-weight: 600;
  font-size: 0.9375rem;
}

.savings-positive {
  color: var(--success);
}

.savings-negative {
  color: var(--danger);
}

@media (max-width: 768px) {
  .compare-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .compare-cost,
  .compare-savings {
    text-align: left;
  }
}

/* ============================================
   SECTION TITLES
   ============================================ */

.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 32px 0 16px 0;
  color: var(--text);
  line-height: 1.3;
}

.section-title:first-child {
  margin-top: 0;
}

/* ============================================
   FAQ
   ============================================ */

.faq details {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-top: 12px;
  cursor: pointer;
}

.faq summary {
  font-weight: 700;
  color: var(--primary);
  cursor: pointer;
  user-select: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::before {
  content: '▶';
  display: inline-block;
  margin-right: 8px;
  transition: transform 0.2s;
}

.faq details[open] summary::before {
  transform: rotate(90deg);
}

.faq p {
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.6;
}

/* ============================================
   BREADCRUMB
   ============================================ */

.breadcrumb {
  font-size: 0.875rem;
  color: var(--muted);
  margin: 0 0 16px 0;
}

.breadcrumb a {
  color: var(--primary);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
  margin-top: 60px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.875rem;
  color: var(--muted);
}

.footer a {
  color: var(--primary);
  text-decoration: none;
  margin: 0 8px;
}

.footer a:hover {
  text-decoration: underline;
}

.site-footer {
  margin-top: 60px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 24px;
}

.footer-note {
  font-size: 0.75rem;
  color: var(--muted);
  text-align: center;
  margin: 0;
}

.contact-section {
  text-align: center;
  margin: 48px 0;
}

.contact-text {
  color: var(--muted);
  margin: 8px 0 24px 0;
}

.contact-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
  max-width: 400px;
  margin: 0 auto 16px auto;
}

.contact-label {
  font-size: 0.875rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.contact-mail {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
}

.contact-mail:hover {
  text-decoration: underline;
}

.contact-note {
  font-size: 0.875rem;
  color: var(--muted);
}

/* ============================================
   COOKIE BANNER
   ============================================ */

.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--card);
  border-top: 2px solid var(--border);
  box-shadow: 0 -4px 12px rgba(0, 0, 0, 0.1);
  padding: 20px;
  z-index: 1000;
}

.cookie-content {
  max-width: 980px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.cookie-actions {
  display: flex;
  gap: 12px;
}

@media (max-width: 768px) {
  .cookie-content {
    flex-direction: column;
    text-align: center;
  }
}

/* ============================================
   HAMBURGER MENU (MOBILE)
   ============================================ */

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
  position: relative;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Menu overlay */
.menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
}

.menu-overlay.active {
  display: block;
}

@media (max-width: 768px) {
  .hamburger {
    display: block;
  }
  
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--card);
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    padding: 80px 20px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
    transition: right 0.3s ease;
    z-index: 1000;
  }
  
  .nav.active {
    right: 0;
  }
  
  .nav a {
    width: 100%;
    padding: 12px 16px;
    border-radius: 8px;
    transition: background 0.2s;
  }
  
  .nav a:hover {
    background: var(--bg);
  }
}

/* ============================================
   SKIP LINK (Accessibility)
   ============================================ */

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 999;
  padding: 1em;
  background: var(--primary);
  color: white;
  text-decoration: none;
}

.skip-link:focus {
  left: 0;
  top: 0;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

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

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 640px) {
  h1 {
    font-size: 1.75rem;
  }
  
  h2 {
    font-size: 1.5rem;
  }
  
  .container {
    padding: 12px;
  }
  
  .card {
    padding: 16px;
  }
  
  .grid {
    grid-template-columns: 1fr;
  }
}