/* =============================================
   KVHomes Landing — Design System
   Brand: a logó alapján (KV Navy + HOMES Sky Blue)
   Tablet-első, ≥768 px-től skálázva
   ============================================= */

:root {
  /* Brand színek */
  --kv-navy: #2C3E50;
  --kv-navy-dark: #1F2D3D;
  --kv-navy-light: #3D556E;
  --kv-sky: #3DB4E8;
  --kv-sky-dark: #2A9CCC;
  --kv-sky-light: #7BCDEC;
  --kv-sky-bg: #E8F6FC;

  /* Neutrálok */
  --kv-white: #FFFFFF;
  --kv-gray-50: #F8FAFC;
  --kv-gray-100: #F1F5F9;
  --kv-gray-200: #E2E8F0;
  --kv-gray-300: #CBD5E1;
  --kv-gray-500: #64748B;
  --kv-gray-700: #334155;
  --kv-gray-900: #0F172A;

  /* Szemantikus */
  --kv-success: #10B981;
  --kv-error: #EF4444;
  --kv-warning: #F59E0B;

  /* Tipográfia */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

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

  /* Árnyékok */
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 10px 32px rgba(15, 23, 42, 0.12), 0 4px 8px rgba(15, 23, 42, 0.06);
  --shadow-cta: 0 8px 24px rgba(44, 62, 80, 0.2);
  --shadow-cta-sky: 0 8px 24px rgba(61, 180, 232, 0.3);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; tab-size: 4; }
body, h1, h2, h3, h4, h5, h6, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }
img, picture, video, svg { max-width: 100%; display: block; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; padding: 0; }

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.5;
  color: var(--kv-gray-700);
  background:
    radial-gradient(at 20% -10%, rgba(61, 180, 232, 0.08) 0%, transparent 50%),
    radial-gradient(at 95% 10%, rgba(44, 62, 80, 0.04) 0%, transparent 50%),
    linear-gradient(180deg, var(--kv-gray-50) 0%, var(--kv-white) 100%);
  min-height: 100dvh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ===== Layout ===== */
.kv-shell {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.kv-container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: 24px;
}

@media (min-width: 768px) {
  .kv-container { padding-inline: 40px; }
}

/* ===== Header ===== */
.kv-header {
  padding: 24px 0 8px;
  text-align: center;
}
.kv-header__logo {
  display: inline-block;
  max-width: 320px;
  width: 60vw;
  height: auto;
}
@media (min-width: 768px) {
  .kv-header { padding: 32px 0 16px; }
  .kv-header__logo { max-width: 380px; width: auto; }
}

/* ===== Main / Hero ===== */
.kv-main {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 0 48px;
}

.kv-hero {
  text-align: center;
  max-width: 880px;
  margin-inline: auto;
}

.kv-hero__greeting {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--kv-sky-dark);
  background: var(--kv-sky-bg);
  padding: 8px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.kv-hero__title {
  font-size: clamp(28px, 4.5vw, 44px);
  line-height: 1.15;
  color: var(--kv-navy);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.kv-hero__title em {
  font-style: normal;
  color: var(--kv-sky);
}

.kv-hero__subtitle {
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.5;
  color: var(--kv-gray-500);
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: 40px;
}

/* ===== CTA gombok ===== */
.kv-ctas {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .kv-ctas {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

.kv-cta {
  --bg: var(--kv-navy);
  --bg-hover: var(--kv-navy-dark);
  --fg: var(--kv-white);
  --shadow: var(--shadow-cta);

  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  padding: 28px 24px;
  min-height: 160px;
  background: var(--bg);
  color: var(--fg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  text-decoration: none;
  text-align: left;
  font-weight: 600;
  width: 100%;
  transition: transform 120ms ease, box-shadow 200ms ease, background-color 200ms ease;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.kv-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 0%, rgba(255,255,255,0.12) 0%, transparent 50%);
  z-index: -1;
}

.kv-cta:hover,
.kv-cta:focus-visible {
  background: var(--bg-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.18);
}

.kv-cta:active { transform: translateY(0) scale(0.985); }

.kv-cta:focus-visible {
  outline: 3px solid var(--kv-sky-light);
  outline-offset: 3px;
}

.kv-cta--sky {
  --bg: var(--kv-sky);
  --bg-hover: var(--kv-sky-dark);
  --shadow: var(--shadow-cta-sky);
}

.kv-cta__icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(255,255,255,0.15);
  display: grid;
  place-items: center;
  backdrop-filter: blur(8px);
}
.kv-cta__icon svg { width: 28px; height: 28px; }

.kv-cta__title {
  font-size: clamp(20px, 2.2vw, 26px);
  font-weight: 700;
  line-height: 1.2;
  margin: 0;
}

.kv-cta__subtitle {
  font-size: 15px;
  font-weight: 400;
  opacity: 0.85;
  margin: 0;
}

.kv-cta__arrow {
  position: absolute;
  right: 24px;
  bottom: 24px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  transition: transform 200ms ease;
}
.kv-cta:hover .kv-cta__arrow { transform: translateX(4px); }

@media (min-width: 768px) {
  .kv-cta {
    min-height: 200px;
    padding: 32px;
    gap: 20px;
  }
  .kv-cta__icon { width: 56px; height: 56px; }
  .kv-cta__icon svg { width: 32px; height: 32px; }
}

/* ===== Footer ===== */
.kv-footer {
  padding: 24px 0 32px;
  text-align: center;
  font-size: 14px;
  color: var(--kv-gray-500);
  border-top: 1px solid var(--kv-gray-200);
  margin-top: auto;
}
.kv-footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 24px;
  margin-bottom: 8px;
}
.kv-footer a {
  color: var(--kv-gray-500);
  text-decoration: none;
  padding: 4px 0;
  transition: color 150ms ease;
}
.kv-footer a:hover { color: var(--kv-navy); }

/* ===== Modal (HTML <dialog>) ===== */
.kv-dialog {
  border: none;
  padding: 0;
  border-radius: var(--radius-xl);
  background: var(--kv-white);
  box-shadow: var(--shadow-lg);
  max-width: 560px;
  width: calc(100% - 32px);
  max-height: calc(100dvh - 32px);
  overflow: hidden;
}

.kv-dialog[open] {
  animation: kv-dialog-in 200ms cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes kv-dialog-in {
  from { opacity: 0; transform: translateY(8px) scale(0.98); }
  to   { opacity: 1; transform: none; }
}

.kv-dialog::backdrop {
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(4px);
  animation: kv-backdrop-in 200ms ease;
}
@keyframes kv-backdrop-in { from { opacity: 0; } to { opacity: 1; } }

.kv-dialog__inner {
  display: flex;
  flex-direction: column;
  max-height: calc(100dvh - 32px);
}

.kv-dialog__header {
  padding: 24px 28px 16px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  border-bottom: 1px solid var(--kv-gray-100);
}
.kv-dialog__title {
  font-size: 22px;
  font-weight: 700;
  color: var(--kv-navy);
  margin: 0;
  flex: 1;
  line-height: 1.25;
}
.kv-dialog__close {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  color: var(--kv-gray-500);
  background: var(--kv-gray-100);
  transition: background-color 150ms ease, color 150ms ease;
  margin: -4px -8px -4px 0;
}
.kv-dialog__close:hover { background: var(--kv-gray-200); color: var(--kv-navy); }
.kv-dialog__close svg { width: 20px; height: 20px; }

.kv-dialog__body { padding: 24px 28px; overflow-y: auto; }
.kv-dialog__footer {
  padding: 16px 28px 24px;
  border-top: 1px solid var(--kv-gray-100);
  background: var(--kv-gray-50);
}

@media (min-width: 768px) {
  .kv-dialog { max-width: 640px; }
  .kv-dialog__header { padding: 32px 36px 20px; }
  .kv-dialog__body   { padding: 28px 36px; }
  .kv-dialog__footer { padding: 20px 36px 28px; }
}

/* ===== Form ===== */
.kv-form { display: flex; flex-direction: column; gap: 20px; }

.kv-field { display: flex; flex-direction: column; gap: 8px; }

.kv-field__label {
  font-size: 14px;
  font-weight: 600;
  color: var(--kv-navy);
}
.kv-field__label .kv-req { color: var(--kv-error); margin-left: 2px; }

.kv-input, .kv-textarea, .kv-select {
  appearance: none;
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  background: var(--kv-white);
  border: 1.5px solid var(--kv-gray-200);
  color: var(--kv-navy);
  font-size: 16px;
  line-height: 1.4;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
.kv-input:hover, .kv-textarea:hover, .kv-select:hover {
  border-color: var(--kv-gray-300);
}
.kv-input:focus, .kv-textarea:focus, .kv-select:focus {
  outline: none;
  border-color: var(--kv-sky);
  box-shadow: 0 0 0 4px rgba(61, 180, 232, 0.18);
}
.kv-input::placeholder, .kv-textarea::placeholder {
  color: var(--kv-gray-300);
}

.kv-textarea { resize: vertical; min-height: 96px; }

.kv-field--error .kv-input,
.kv-field--error .kv-textarea,
.kv-field--error .kv-select {
  border-color: var(--kv-error);
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.12);
}

.kv-field__error {
  font-size: 13px;
  color: var(--kv-error);
  display: none;
}
.kv-field--error .kv-field__error { display: block; }
.kv-field__hint {
  font-size: 13px;
  color: var(--kv-gray-500);
}

/* Checkbox / radio */
.kv-check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  padding: 10px;
  border-radius: var(--radius-md);
  transition: background-color 120ms ease;
}
.kv-check:hover { background: var(--kv-gray-50); }

.kv-check__box {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--kv-gray-300);
  border-radius: 6px;
  display: grid;
  place-items: center;
  background: var(--kv-white);
  transition: all 150ms ease;
  margin-top: 1px;
}
.kv-check__box svg {
  width: 14px; height: 14px;
  opacity: 0;
  color: var(--kv-white);
  transition: opacity 120ms ease;
}
.kv-check input { position: absolute; opacity: 0; pointer-events: none; }
.kv-check input:checked + .kv-check__box {
  background: var(--kv-sky);
  border-color: var(--kv-sky);
}
.kv-check input:checked + .kv-check__box svg { opacity: 1; }
.kv-check input:focus-visible + .kv-check__box {
  outline: 3px solid var(--kv-sky-light);
  outline-offset: 2px;
}
.kv-check__label {
  font-size: 14px;
  line-height: 1.5;
  color: var(--kv-gray-700);
}
.kv-check--error .kv-check__box { border-color: var(--kv-error); }

/* Radio group */
.kv-radios {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.kv-radio {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  border: 1.5px solid var(--kv-gray-200);
  border-radius: var(--radius-md);
  background: var(--kv-white);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  color: var(--kv-gray-700);
  transition: all 150ms ease;
  text-align: center;
}
.kv-radio input { position: absolute; opacity: 0; pointer-events: none; }
.kv-radio:hover { border-color: var(--kv-gray-300); }
.kv-radio:has(input:checked) {
  background: var(--kv-sky-bg);
  border-color: var(--kv-sky);
  color: var(--kv-navy);
  font-weight: 600;
}
.kv-radio:has(input:focus-visible) {
  outline: 3px solid var(--kv-sky-light);
  outline-offset: 2px;
}

/* Button */
.kv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  min-height: 52px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 16px;
  text-decoration: none;
  cursor: pointer;
  transition: all 150ms ease;
  user-select: none;
}
.kv-btn--primary {
  background: var(--kv-navy);
  color: var(--kv-white);
  box-shadow: var(--shadow-md);
}
.kv-btn--primary:hover:not(:disabled) {
  background: var(--kv-navy-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}
.kv-btn--primary:active:not(:disabled) { transform: translateY(0); }
.kv-btn--sky { background: var(--kv-sky); }
.kv-btn--sky:hover:not(:disabled) { background: var(--kv-sky-dark); }
.kv-btn--ghost {
  background: var(--kv-gray-100);
  color: var(--kv-gray-700);
}
.kv-btn--ghost:hover:not(:disabled) { background: var(--kv-gray-200); }

.kv-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.kv-btn:focus-visible {
  outline: 3px solid var(--kv-sky-light);
  outline-offset: 2px;
}

.kv-btn--block { width: 100%; }

.kv-btn__spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: kv-spin 0.6s linear infinite;
}
.kv-btn.is-loading .kv-btn__spinner { display: block; }
.kv-btn.is-loading .kv-btn__text { opacity: 0.7; }
@keyframes kv-spin { to { transform: rotate(360deg); } }

/* Honeypot — vizuálisan rejtett */
.kv-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

/* Köszönő képernyő */
.kv-success {
  text-align: center;
  padding: 16px 0;
}
.kv-success__icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--kv-sky), var(--kv-sky-dark));
  display: grid;
  place-items: center;
  margin: 0 auto 20px;
  color: var(--kv-white);
  animation: kv-success-pop 400ms cubic-bezier(0.16, 1, 0.3, 1);
}
.kv-success__icon svg { width: 36px; height: 36px; }
.kv-success__title {
  font-size: 24px;
  font-weight: 700;
  color: var(--kv-navy);
  margin-bottom: 8px;
}
.kv-success__text {
  color: var(--kv-gray-500);
  margin-bottom: 24px;
}
.kv-success__countdown {
  font-size: 14px;
  color: var(--kv-gray-500);
}
@keyframes kv-success-pop {
  0%   { transform: scale(0); opacity: 0; }
  60%  { transform: scale(1.1); }
  100% { transform: scale(1); opacity: 1; }
}

/* Naptár (calendar.js renderelt) */
.kv-calendar {
  margin-top: 16px;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--kv-gray-200);
  background: var(--kv-white);
  display: none;
}
.kv-calendar.is-visible { display: block; animation: kv-fade-in 250ms ease; }
@keyframes kv-fade-in { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; } }

.kv-calendar__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.kv-calendar__month {
  font-size: 15px;
  font-weight: 600;
  color: var(--kv-navy);
}
.kv-calendar__nav {
  display: flex;
  gap: 8px;
}
.kv-calendar__nav button {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--kv-gray-100);
  color: var(--kv-navy);
  transition: background-color 120ms ease;
}
.kv-calendar__nav button:hover:not(:disabled) { background: var(--kv-gray-200); }
.kv-calendar__nav button:disabled { opacity: 0.4; cursor: not-allowed; }

.kv-calendar__weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--kv-gray-500);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-align: center;
}
.kv-calendar__weekday-allowed { color: var(--kv-sky-dark); }
.kv-calendar__weekdays span { padding: 4px 0; }

.kv-calendar__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.kv-day {
  aspect-ratio: 1;
  border-radius: 10px;
  display: grid;
  place-items: center;
  font-size: 14px;
  font-weight: 500;
  background: var(--kv-gray-50);
  color: var(--kv-gray-300);
  cursor: not-allowed;
  transition: all 120ms ease;
}
.kv-day.is-allowed {
  background: var(--kv-white);
  color: var(--kv-navy);
  cursor: pointer;
  border: 1.5px solid var(--kv-sky-light);
}
.kv-day.is-allowed:hover { background: var(--kv-sky-bg); }
.kv-day.is-selected {
  background: var(--kv-sky);
  border-color: var(--kv-sky);
  color: var(--kv-white);
  font-weight: 700;
}
.kv-day.is-today {
  outline: 2px solid var(--kv-sky-light);
  outline-offset: -2px;
}
.kv-day.is-other-month { opacity: 0.3; }

.kv-slots {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--kv-gray-100);
}
.kv-slots__title {
  font-size: 14px;
  font-weight: 600;
  color: var(--kv-navy);
  margin-bottom: 12px;
}
.kv-slots__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 8px;
}
.kv-slot {
  padding: 10px 8px;
  text-align: center;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  background: var(--kv-white);
  border: 1.5px solid var(--kv-gray-200);
  color: var(--kv-navy);
  cursor: pointer;
  transition: all 120ms ease;
}
.kv-slot:hover:not(:disabled) {
  border-color: var(--kv-sky);
  background: var(--kv-sky-bg);
}
.kv-slot.is-selected {
  background: var(--kv-sky);
  border-color: var(--kv-sky);
  color: var(--kv-white);
}
.kv-slot:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  text-decoration: line-through;
  background: var(--kv-gray-50);
}
.kv-slots__empty {
  text-align: center;
  color: var(--kv-gray-500);
  font-size: 14px;
  padding: 24px 0;
}

/* Hiba toast */
.kv-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%) translateY(120%);
  padding: 14px 20px;
  border-radius: var(--radius-md);
  background: var(--kv-gray-900);
  color: var(--kv-white);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  transition: transform 250ms cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 9999;
  max-width: 90vw;
}
.kv-toast.is-visible { transform: translateX(-50%) translateY(0); }
.kv-toast--error { background: var(--kv-error); }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Print elrejtés */
@media print {
  .kv-cta, .kv-dialog, .kv-toast { display: none !important; }
}