/* ==========================================================================
   AALTO GUARD - LOPULLINEN TYYLITIEDOSTO (ALLAS 3 + HIENOVARAISEN PIENI TUMMENNUS)
   ========================================================================== */

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

html, body {
  width: 100%;
  height: 100%;
  min-height: 100dvh;
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: #ffffff;
  color: #ffffff;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow: hidden;
}

/* Page Frame with white outer margin */
.page-wrapper {
  height: 100vh;
  height: 100dvh;
  min-height: 100dvh;
  padding: 16px;
  display: flex;
  background-color: #ffffff;
}

/* Hero Card Container */
.hero-card {
  flex: 1;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  height: calc(100dvh - 32px);
  min-height: calc(100dvh - 32px);
  max-height: calc(100dvh - 32px);
  border-radius: 28px;
  overflow: hidden;
  box-shadow: 
    0 10px 40px rgba(0, 0, 0, 0.14),
    0 1px 4px rgba(0, 0, 0, 0.06);
}

/* Erillinen GPU-kiihdytetty taustakuvakerros (blurraantuu välittömästi ilman viivettä) */
.hero-bg {
  position: absolute;
  inset: -28px;
  background-image: 
    linear-gradient(rgba(0, 0, 0, 0.32), rgba(0, 0, 0, 0.40)),
    url('pool-diagonal.jpg');
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  z-index: 0;
  transition: filter 0.22s cubic-bezier(0.16, 1, 0.3, 1), transform 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: filter, transform;
}

/* Kun modaali avataan, koko taustakuva ja sisältö sumenevat 0ms viiveellä */
body.modal-open .hero-bg {
  filter: blur(22px) brightness(0.8);
  transform: scale(1.08);
}

/* Header & Logo */
.header {
  position: relative;
  width: 100%;
  padding-top: 38px;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10;
  transition: filter 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
  will-change: filter, opacity;
}

.logo {
  display: inline-flex;
  align-items: center;
  color: #ffffff;
  user-select: none;
}

.logo-text {
  font-family: 'Open Sans', sans-serif;
  font-size: 21px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: #ffffff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8), 0 0 20px rgba(0, 0, 0, 0.45);
}

/* Center Content */
.hero-content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px 24px 70px;
  max-width: 860px;
  width: 100%;
  margin: auto;
  z-index: 10;
  transition: filter 0.2s ease, opacity 0.2s ease, transform 0.2s ease;
  will-change: filter, opacity;
}

/* Tekstisisällön välitön sumennus */
body.modal-open .header,
body.modal-open .hero-content {
  filter: blur(10px);
  opacity: 0.15;
  transform: scale(0.98);
  pointer-events: none;
}

/* Main Heading */
.hero-title {
  font-size: clamp(2.5rem, 5.8vw, 4.5rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: #ffffff;
  margin-bottom: 18px;
  text-shadow: 0 3px 16px rgba(0, 0, 0, 0.8), 0 0 36px rgba(0, 0, 0, 0.5);
}

.hero-title .italic-serif {
  font-family: 'Instrument Serif', 'Playfair Display', Georgia, serif;
  font-style: italic;
  font-weight: 400;
  letter-spacing: -0.01em;
  padding: 0 2px;
}

/* Subtitle */
.hero-subtitle {
  font-size: clamp(1rem, 1.7vw, 1.15rem);
  font-weight: 600;
  color: #ffffff;
  letter-spacing: -0.01em;
  margin-bottom: 32px;
  max-width: 650px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.85), 0 0 24px rgba(0, 0, 0, 0.55);
}

/* Waitlist Email Form */
.waitlist-form {
  display: inline-flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-radius: 9999px;
  padding: 5px 6px 5px 22px;
  box-shadow: 
    0 16px 38px rgba(0, 0, 0, 0.35),
    0 2px 8px rgba(0, 0, 0, 0.12),
    inset 0 1px 1px rgba(255, 255, 255, 0.8);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  max-width: 100%;
}

.waitlist-form:focus-within {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 
    0 20px 48px rgba(0, 0, 0, 0.4),
    0 0 0 3px rgba(255, 255, 255, 0.6);
}

.waitlist-input {
  border: none;
  background: transparent;
  outline: none;
  font-family: inherit;
  font-size: 15px;
  color: #111827;
  width: 220px;
  padding: 8px 0;
}

.waitlist-input::placeholder {
  color: #64748b;
  font-weight: 500;
}

.waitlist-button {
  border: none;
  outline: none;
  background: #ffffff;
  color: #0f172a;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: 12px 24px;
  border-radius: 9999px;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: background-color 0.2s ease;
  white-space: nowrap;
}

.waitlist-button:hover {
  background-color: #f1f5f9;
}

.waitlist-button:active {
  background-color: #e2e8f0;
}

/* Privacy Note */
.privacy-note {
  margin-top: 15px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.92);
  font-weight: 500;
  letter-spacing: -0.01em;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.85);
  text-align: center;
}

.privacy-link-btn {
  background: none;
  border: none;
  padding: 0;
  font: inherit;
  color: #ffffff;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

.privacy-link-btn:hover {
  opacity: 0.8;
}

/* Feedback messages */
.form-feedback {
  margin-top: 12px;
  font-size: 14px;
  min-height: 20px;
  transition: all 0.3s ease;
}

.form-feedback.success {
  color: #86efac;
  font-weight: 600;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

.form-feedback.error {
  color: #fca5a5;
  font-weight: 600;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

/* ==========================================================================
   FROSTED GLASS MODAL
   ========================================================================== */
.modal-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.42);
}

.modal-dialog {
  position: relative;
  z-index: 2;
  width: 90%;
  max-width: 540px;
  max-height: 82vh;
  max-height: 82dvh;
  display: flex;
  flex-direction: column;
  background: rgba(13, 20, 28, 0.88);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 24px;
  padding: 28px 22px 28px 30px;
  text-align: left;
  transform: scale(0.94) translateY(12px);
  opacity: 0;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
  transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.25s ease;
  overflow: hidden;
}

.modal-overlay.open .modal-dialog {
  transform: scale(1) translateY(0);
  opacity: 1;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding-right: 8px;
  flex-shrink: 0;
}

.modal-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
}

.modal-close-btn {
  background: rgba(255, 255, 255, 0.12);
  border: none;
  color: #ffffff;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  margin: 0;
  transition: background-color 0.2s ease;
}

.modal-close-btn:hover {
  background-color: rgba(255, 255, 255, 0.25);
}

.modal-close-btn svg {
  width: 14px;
  height: 14px;
  display: block;
  pointer-events: none;
}

/* Sisältöalue saumattomalla lasi-scrollbarilla */
.modal-body {
  flex: 1;
  overflow-y: auto;
  padding-right: 12px;
  margin-right: -4px;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.22) transparent;
}

/* Webkit (Chrome, Edge, Safari) saumaton ja smooth scrollbar */
.modal-body::-webkit-scrollbar {
  width: 5px;
}

.modal-body::-webkit-scrollbar-track {
  background: transparent;
  margin: 6px 0;
}

.modal-body::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.22);
  border-radius: 9999px;
  transition: background-color 0.2s ease;
}

.modal-body::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.45);
}

.modal-body h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
  margin-top: 14px;
  margin-bottom: 4px;
}

.modal-body p {
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.84);
}

/* ==========================================================================
   RESPONSIVE & MOBILE
   ========================================================================== */
@media (max-width: 640px) {
  .page-wrapper {
    padding: 8px;
  }

  .hero-card {
    border-radius: 20px;
    height: calc(100dvh - 16px);
    min-height: calc(100dvh - 16px);
    max-height: calc(100dvh - 16px);
  }

  .header {
    padding-top: 20px;
  }

  .logo-text {
    font-size: 18px;
  }

  .hero-content {
    padding: 12px 14px 40px;
  }

  .hero-title {
    font-size: 2.15rem;
    line-height: 1.18;
    margin-bottom: 12px;
  }

  .hero-subtitle {
    font-size: 0.92rem;
    margin-bottom: 22px;
    line-height: 1.45;
  }

  .waitlist-form {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
    padding: 8px;
    gap: 8px;
    border-radius: 22px;
  }

  .waitlist-input {
    width: 100%;
    text-align: center;
    padding: 8px 12px;
    font-size: 14.5px;
  }

  .waitlist-button {
    width: 100%;
    padding: 12px;
    font-size: 14px;
  }

  .modal-dialog {
    width: 92%;
    max-height: 82dvh;
    padding: 24px 16px 24px 22px;
    border-radius: 20px;
  }

  .modal-header h3 {
    font-size: 1.2rem;
  }
}