/* ===== KÜFNER FILTER – KONFIGURATOR STYLES (matched to kuefner-filter.com) ===== */

/* --- NAVBAR (matching Küfner header) --- */
.kf-nav {
  position: sticky; top: 0; z-index: 1000;
  background: var(--light-color);
  border-bottom: 1px solid var(--gray-color);
}
.kf-nav__inner {
  max-width: 1520px; margin: 0 auto; padding: 12px 32px;
  display: flex; align-items: center; justify-content: space-between;
}
.kf-nav__logo {
  display: flex; align-items: center; gap: 12px;
  color: var(--text-color); font-weight: 700; font-size: 1.25rem;
  text-decoration: none;
}
.kf-nav__logo-icon {
  font-size: 2rem; display: inline-block;
}
.kf-nav__logo img { height: 40px; width: auto; }
.kf-nav__logo:hover { color: var(--primary-color); }
.kf-nav__actions { display: flex; align-items: center; gap: 16px; }
.kf-nav__tel { display: flex; align-items: center; gap: 6px; color: var(--text-color); font-size: 0.875rem; }
.kf-nav__tel:hover { color: var(--primary-color); }

/* --- HERO (matching Küfner dark hero style) --- */
.kf-hero {
  background: var(--dark-color);
  color: var(--light-color);
  position: relative; overflow: hidden;
}
.kf-hero__inner {
  max-width: 1520px; margin: 0 auto;
  padding: 80px 32px; min-height: 60vh;
  display: flex; align-items: center; gap: 48px;
}
.kf-hero__content { flex: 1; max-width: 700px; }
.kf-hero__content h1 { font-size: 3.75rem; line-height: 3.95rem; color: #fff; margin-bottom: 1rem; }
.kf-hero__sub { font-size: 1rem; line-height: 1.6rem; opacity: 0.8; margin-bottom: 2rem; max-width: 560px; color: #fff; }
.kf-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 2rem; }
.kf-hero__visual { flex: 0 0 420px; display: flex; justify-content: center; }
.kf-trust-row { display: flex; flex-wrap: wrap; gap: 20px; font-size: 0.875rem; opacity: 0.7; }
.kf-trust-row span { display: flex; align-items: center; gap: 4px; }

@media (max-width: 991px) {
  .kf-hero__inner { flex-direction: column; align-items: flex-start; padding: 48px 16px; min-height: auto; }
  .kf-hero__content h1 { font-size: 2rem; line-height: 2.625rem; }
  .kf-hero__visual { display: none; }
}

/* --- HOW SECTION --- */
.kf-how-section { padding: 80px 0; background: var(--gray-color); }
.kf-steps-grid { display: grid; grid-template-columns: repeat(5,1fr); gap: 8px; }
.kf-step-card { padding: 24px 16px; text-align: center; }
.kf-step-card__num { font-size: 2rem; font-weight: 800; color: var(--primary-color); margin-bottom: 8px; }
.kf-step-card h3 { margin-bottom: 4px; font-size: 1rem; }
.kf-step-card p { font-size: 0.875rem; color: var(--darkgray-color); }

@media (max-width: 991px) {
  .kf-steps-grid { grid-template-columns: repeat(2,1fr); }
}
@media (max-width: 575px) {
  .kf-steps-grid { grid-template-columns: 1fr; }
}

/* --- BRANCHES SECTION (landing) --- */
.kf-branches-section { padding: 80px 0; }

/* --- SELECTION GRID (used for branches, functions, filter types) --- */
.kf-selection-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 8px;
}
.kf-selection-card {
  padding: 32px 24px; text-align: center; cursor: pointer;
  border: none; background: var(--light-color);
  box-shadow: 0 0 0 1px var(--gray-color); font-family: 'Poppins', sans-serif;
  transition: all var(--kf-transition); position: relative;
}
.kf-selection-card:hover {
  box-shadow: 0 0 0 3px var(--primary-color); z-index: 1;
}
.kf-selection-card__icon { font-size: 2.5rem; display: block; margin-bottom: 12px; color: var(--primary-color); }
.kf-selection-card h3 { margin-bottom: 6px; font-size: 1.1rem; color: var(--text-color); }
.kf-selection-card p { font-size: 0.875rem; color: var(--darkgray-color); margin-bottom: 12px; }
.kf-selection-card__cta {
  display: inline-flex; align-items: center; gap: 4px;
  color: var(--primary-color); font-size: 0.875rem; font-weight: 700;
}
.kf-selection-card__cta::after { content: "↗"; }

@media (max-width: 991px) { .kf-selection-grid { grid-template-columns: repeat(2,1fr); } }
@media (max-width: 575px) { .kf-selection-grid { grid-template-columns: 1fr; } }

/* --- FILTERTYP CARD --- */
.kf-filtertyp-card { padding: 32px; text-align: center; position: relative; }
.kf-filtertyp-card.recommended { box-shadow: 0 0 0 3px var(--primary-color); }
.kf-recommended-badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--primary-color); color: #fff; padding: 4px 12px;
  font-size: 0.75rem; font-weight: 700; white-space: nowrap;
  display: flex; align-items: center; gap: 4px;
}
.kf-filtertyp-card__icon { font-size: 2.5rem; display: block; margin-bottom: 12px; color: var(--primary-color); }
.kf-filtertyp-card__cta { color: var(--primary-color); font-size: 0.875rem; font-weight: 700; margin-top: 12px; display: inline-flex; align-items: center; gap: 4px; }
.kf-filtertyp-card__cta::after { content: "↗"; }

/* --- WIZARD PROGRESS --- */
.kf-wizard-progress {
  display: flex; align-items: center; justify-content: center;
  gap: 0; margin-bottom: 2.5rem; flex-wrap: nowrap;
}
.kf-wizard-step { display: flex; align-items: center; gap: 8px; flex-shrink: 0; cursor: pointer; transition: opacity var(--kf-transition); }
.kf-wizard-step:hover { opacity: 0.8; }
.kf-wizard-step:hover .kf-wizard-step__dot { transform: scale(1.05); }
.kf-wizard-step__dot {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  font-size: 0.875rem; font-weight: 700; color: var(--darkgray-color);
  background: var(--gray-color); border: 2px solid var(--gray-color);
  transition: all var(--kf-transition);
}
.kf-wizard-step.active .kf-wizard-step__dot {
  background: var(--primary-color); border-color: var(--primary-color); color: #fff;
}
.kf-wizard-step.done .kf-wizard-step__dot {
  background: var(--primary-color); border-color: var(--primary-color); color: #fff;
}
.kf-wizard-step__label { font-size: 0.875rem; font-weight: 500; color: var(--darkgray-color); }
.kf-wizard-step.active .kf-wizard-step__label { color: var(--text-color); font-weight: 700; }
.kf-wizard-step.done .kf-wizard-step__label { color: var(--text-color); }
.kf-wizard-step__line {
  width: 40px; height: 2px; background: var(--gray-color);
  margin: 0 8px; transition: background var(--kf-transition);
}
.kf-wizard-step__line.done { background: var(--primary-color); }

@media (max-width: 575px) {
  .kf-wizard-step__label { display: none; }
  .kf-wizard-step__line { width: 24px; }
}

/* --- CONTEXT BAR --- */
.kf-context-bar { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; margin-bottom: 2rem; }

/* --- KONFIGURATOR PAGE --- */
.kf-konfigurator-page {
  padding: 48px 0 80px; background: var(--light-color); min-height: 80vh;
}
.kf-konfigurator-inner {
  max-width: 900px; margin: 0 auto; padding: 0 32px;
}
.kf-page-header { text-align: center; margin-bottom: 2rem; }
.kf-page-header h1 { font-size: 2rem; margin-bottom: 0.5rem; }
.kf-page-header p { color: var(--darkgray-color); max-width: 560px; margin: 0 auto; }

.kf-search-wrap { position: relative; margin-bottom: 2rem; max-width: 400px; margin-left: auto; margin-right: auto; }
.kf-search-icon { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--darkgray-color); }
.kf-search-input { padding-left: 44px !important; }

.kf-empty { text-align: center; padding: 40px; color: var(--darkgray-color); }
.kf-fallback-hint { text-align: center; margin-top: 1.5rem; font-size: 0.875rem; color: var(--darkgray-color); }

/* --- AI BOX --- */
.kf-ai-box {
  background: #f8fafc; /* Very light slate */
  border-left: 4px solid var(--primary-color);
  padding: 24px;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}
.kf-ai-header {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 1.1rem;
  color: var(--primary-color);
  margin-bottom: 8px;
}
.kf-ai-result {
  margin-top: 16px; padding-top: 16px;
  border-top: 1px dashed #cbd5e1;
}
.kf-ai-param {
  background: var(--light-color);
  border: 1px solid var(--gray-color);
  padding: 10px 12px;
  display: flex; flex-direction: column;
}
.kf-divider {
  display: flex; align-items: center; text-align: center; margin: 32px 0;
  color: var(--darkgray-color); font-size: 0.75rem; font-weight: 600; letter-spacing: 0.05em;
}
.kf-divider::before, .kf-divider::after {
  content: ''; flex: 1; border-bottom: 1px solid var(--gray-color);
}
.kf-divider span { padding: 0 16px; }

.kf-nav-buttons { display: flex; justify-content: space-between; margin-top: 2rem; gap: 12px; flex-wrap: wrap; }

/* --- CONFIG LAYOUT (Layer 4) --- */
.kf-config-layout { display: grid; grid-template-columns: 1fr 340px; gap: 24px; align-items: start; }
.kf-config-main { display: flex; flex-direction: column; gap: 16px; }
.kf-config-section { overflow: hidden; }
.kf-config-section__header {
  padding: 16px 20px; display: flex; justify-content: space-between;
  align-items: center; cursor: pointer;
  border-bottom: 1px solid var(--gray-color); background: var(--gray-color);
}
.kf-config-section__header h3 {
  display: flex; align-items: center; gap: 8px;
  font-size: 1rem; margin: 0;
}
.kf-section-toggle { transition: transform 0.2s; }
.kf-config-section.collapsed .kf-config-section__body { display: none; }
.kf-config-section.collapsed .kf-section-toggle { transform: rotate(-90deg); }
.kf-config-section__body { padding: 20px; }
.kf-config-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.kf-field-group.full-width { grid-column: 1 / -1; }

.kf-field-label { display: flex; align-items: center; gap: 4px; font-size: 0.875rem; font-weight: 600; margin-bottom: 6px; }
.kf-req { color: var(--error-color); }
.kf-field-hint { cursor: help; color: var(--darkgray-color); font-size: 0.875rem; }
.kf-field-error { display: none; font-size: 0.75rem; color: var(--error-color); margin-top: 4px; }
.kf-field-group.error .kf-field-error { display: block; }
.kf-field-group.error .kf-input,
.kf-field-group.error .kf-select { box-shadow: 0 0 0 3px var(--error-color); }

.kf-input-unit { display: flex; }
.kf-input-unit .kf-input { flex: 1; }
.kf-unit {
  display: flex; align-items: center; padding: 0 12px;
  background: var(--darkgray-color); color: var(--light-color);
  font-size: 0.875rem; font-weight: 500;
}
.kf-checkbox-grid { display: flex; flex-wrap: wrap; gap: 10px; }
.kf-cb-item {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.875rem; cursor: pointer;
  padding: 8px 12px; background: var(--gray-color);
  transition: box-shadow 0.15s;
}
.kf-cb-item:hover { box-shadow: 0 0 0 2px var(--primary-color); }

@media (max-width: 991px) {
  .kf-config-layout { grid-template-columns: 1fr; }
  .kf-config-fields { grid-template-columns: 1fr; }
}

/* --- LIVE SUMMARY SIDEBAR --- */
.kf-live-summary {
  position: sticky; top: 80px; padding: 20px;
}
.kf-live-summary__title { font-weight: 700; margin-bottom: 16px; }
.kf-summary-rows { display: flex; flex-direction: column; }
.kf-summary-row {
  display: flex; justify-content: space-between; padding: 8px 0;
  border-bottom: 1px solid var(--gray-color); font-size: 0.875rem;
}
.kf-summary-row__label { color: var(--darkgray-color); }
.kf-summary-row__val { font-weight: 600; text-align: right; }
.kf-price-indicator { margin-top: 16px; padding-top: 16px; border-top: 2px solid var(--primary-color); }
.kf-price-bar { height: 8px; background: var(--gray-color); margin: 8px 0; overflow: hidden; }
.kf-price-bar__fill { height: 100%; background: var(--primary-color); }
.kf-price-range { display: flex; justify-content: space-between; font-size: 0.875rem; font-weight: 700; }
.kf-price-disclaimer { font-size: 0.7rem; color: var(--darkgray-color); margin-top: 4px; }

/* --- SUMMARY PAGE (Layer 5) --- */
.kf-summary-page { max-width: 800px; }
.kf-summary-section { padding: 24px; margin-bottom: 1.5rem; }
.kf-summary-section h3 { display: flex; align-items: center; gap: 8px; margin-bottom: 16px; }
.kf-summary-table { width: 100%; }
.kf-summary-table td { padding: 8px 0; border-bottom: 1px solid var(--gray-color); font-size: 0.875rem; }
.kf-summary-table td:first-child { color: var(--darkgray-color); width: 40%; }
.kf-summary-table td:last-child { font-weight: 600; text-align: right; }
.kf-price-box {
  background: var(--dark-color); color: var(--light-color);
  padding: 24px; margin-bottom: 1.5rem; text-align: center;
}
.kf-price-value { font-size: 2rem; font-weight: 700; color: var(--highlight-color); margin-top: 4px; }
.kf-contact-form { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.kf-consent-row { grid-column: 1 / -1; display: flex; align-items: flex-start; gap: 8px; font-size: 0.875rem; }
.kf-consent-row input { margin-top: 4px; }

@media (max-width: 575px) { .kf-contact-form { grid-template-columns: 1fr; } }

/* --- DANKE PAGE --- */
.kf-danke {
  padding: 80px 16px; display: flex; justify-content: center; align-items: center;
  min-height: 80vh; background: var(--gray-color);
}
.kf-danke__card { max-width: 680px; text-align: center; padding: 48px; }
.kf-danke__icon { font-size: 4rem; color: var(--success-color); margin-bottom: 1rem; }
.kf-danke__card h1 { margin-bottom: 0.75rem; }
.kf-danke__card p { color: var(--darkgray-color); margin-bottom: 2rem; }
.kf-ref-box {
  background: var(--gray-color); padding: 16px; margin-bottom: 2rem;
  border: 2px solid var(--primary-color);
}
.kf-ref-num { font-size: 1.5rem; font-weight: 800; color: var(--primary-color); margin-top: 4px; }
.kf-next-steps { display: flex; flex-direction: column; gap: 16px; margin-bottom: 2rem; text-align: left; }
.kf-next-step { display: flex; gap: 12px; align-items: flex-start; }
.kf-next-step__icon { font-size: 1.5rem; color: var(--primary-color); flex-shrink: 0; }
.kf-next-step p { font-size: 0.875rem; color: var(--darkgray-color); margin-top: 2px; }
.kf-danke__actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* --- FOOTER (matching Küfner darkgray footer) --- */
.kf-footer {
  background: var(--darkgray-color); color: var(--light-color);
  padding: 24px 0;
}
.kf-footer__inner {
  max-width: 1520px; margin: 0 auto; padding: 0 32px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.75rem;
}
.kf-footer a { color: var(--gray-color); }
.kf-footer a:hover { color: var(--primary-color); }

@media (max-width: 575px) {
  .kf-footer__inner { flex-direction: column; gap: 8px; text-align: center; }
}

/* --- CHATBOT --- */
.kf-chat-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9999;
  font-family: 'Poppins', sans-serif;
}
.kf-chat-btn {
  background: #2c55bf; /* Selected Blue Accent */
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 9999px; /* Pill layout */
  padding: 0 18px;
  height: 48px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
  display: flex; align-items: center; justify-content: center;
  gap: 8px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  font-family: inherit;
}
.kf-chat-btn:hover {
  transform: translateY(-2px);
  background: #1f3f9e;
  box-shadow: 0 6px 24px rgba(0,0,0,0.25);
}
.kf-chat-btn i {
  font-size: 18px;
  color: #38bdf8; /* Soft cyan AI glow */
  animation: kf-pulse-glow 2s infinite alternate;
}
@keyframes kf-pulse-glow {
  0% { transform: scale(0.95); filter: drop-shadow(0 0 1px rgba(56, 189, 248, 0.4)); }
  100% { transform: scale(1.05); filter: drop-shadow(0 0 6px rgba(56, 189, 248, 0.8)); }
}
.kf-chat-window {
  position: absolute;
  bottom: 80px;
  right: 0;
  width: 350px;
  height: 500px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.15);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
  transition: all 0.3s ease;
  border: 1px solid var(--gray-color);
}
.kf-chat-window.open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.kf-chat-header {
  background: var(--primary-color);
  color: white;
  padding: 16px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.kf-chat-close {
  background: none; border: none; color: white; cursor: pointer; font-size: 1.2rem;
}
.kf-chat-body {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #fafafa;
}
.kf-chat-msg {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.875rem;
  line-height: 1.4;
  word-wrap: break-word;
}
.kf-chat-msg.user {
  background: var(--primary-color);
  color: white;
  align-self: flex-end;
  border-bottom-right-radius: 2px;
}
.kf-chat-msg.ai {
  background: #e2e8f0;
  color: var(--text-color);
  align-self: flex-start;
  border-bottom-left-radius: 2px;
}
.kf-chat-input-area {
  padding: 12px;
  border-top: 1px solid var(--gray-color);
  background: white;
  display: flex;
  gap: 8px;
}
.kf-chat-input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid #cbd5e1;
  border-radius: 20px;
  outline: none;
  font-family: inherit;
  font-size: 0.875rem;
}
.kf-chat-send {
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
}

.kf-chat-chip-container {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}
.kf-chat-chip {
  background: white;
  border: 1px solid var(--gray-color);
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  color: var(--darkgray-color);
}
.kf-chat-chip:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}