/* ===================================
   CSS Custom Properties
   =================================== */
:root {
  /* Colors */
  --color-black: #000000;
  --color-white: #ffffff;
  --color-gray-light: #e0e0e0;
  --color-gray-mid: #808080;
  --color-gray-dark: #333333;
  --color-accent: #ff006e; /* High-saturation magenta - change as needed */

  /* Typography */
  --font-primary: 'Inter', sans-serif;
  --font-japanese: 'Noto Sans JP', sans-serif;
  --font-weight-normal: 400;
  --font-weight-bold: 700;
  --font-weight-black: 900;

  /* Grid */
  --grid-max-width: 1200px;
  --grid-gutter: clamp(1rem, 4vw, 3rem);
  --grid-columns: 12;

  /* Spacing */
  --space-xs: clamp(0.5rem, 2vw, 1rem);
  --space-sm: clamp(1rem, 3vw, 1.5rem);
  --space-md: clamp(2rem, 5vw, 3rem);
  --space-lg: clamp(3rem, 8vw, 5rem);
  --space-xl: clamp(5rem, 12vw, 8rem);

  /* Animation */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

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

body {
  font-family: var(--font-primary);
  color: var(--color-black);
  background-color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

body.modal-open {
  overflow: hidden;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-black);
  text-transform: uppercase;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.hero-title {
  font-size: clamp(3rem, 12vw, 8rem);
  letter-spacing: -0.05em;
}

/* ===================================
   Terminal Intro
   =================================== */
.terminal-intro {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: var(--color-black);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.terminal-intro.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.terminal-content {
  max-width: 800px;
  padding: var(--grid-gutter);
}

.terminal-lines {
  font-family: 'Courier New', monospace;
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  line-height: 1.8;
}

.terminal-line {
  opacity: 0;
  animation: fadeIn 0.3s forwards;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

.skip-btn {
  position: absolute;
  bottom: var(--space-lg);
  right: var(--space-lg);
  background-color: var(--color-accent);
  color: var(--color-white);
  border: none;
  padding: 1rem 2rem;
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  cursor: pointer;
  transition: transform var(--transition-fast);
  letter-spacing: 0.1em;
}

.skip-btn:hover,
.skip-btn:focus {
  transform: scale(1.05);
  outline: 2px solid var(--color-white);
  outline-offset: 4px;
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  .terminal-intro {
    display: none;
  }
  .main-content {
    display: block !important;
  }
}

/* ===================================
   Main Content
   =================================== */
.main-content.hidden {
  display: none;
}

/* ===================================
   Hero Section - Split Screen
   =================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-color: var(--color-black);
  color: var(--color-white);
}

.hero-content {
  width: 100%;
  max-width: var(--grid-max-width);
  margin: 0 auto;
  padding: var(--grid-gutter);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.hero-text {
  padding: var(--space-md);
}

.title-line {
  display: block;
  line-height: 0.9;
}

.hero-meta {
  margin-top: var(--space-md);
  font-size: clamp(1rem, 2vw, 1.5rem);
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.hero-date,
.hero-location {
  margin: var(--space-xs) 0;
}

.hero-image {
  position: relative;
  width: 100%;
  aspect-ratio: 3/4;
  overflow: hidden;
}

.hero-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.2);
  mix-blend-mode: luminosity;
}

/* Mobile: Stack vertically */
@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .hero-image {
    aspect-ratio: 16/9;
  }
}

/* ===================================
   Info Section
   =================================== */
.info {
  padding: var(--space-xl) var(--grid-gutter);
  background-color: var(--color-white);
}

.info-container {
  max-width: var(--grid-max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.info-block {
  padding: var(--space-md);
  border: 2px solid var(--color-black);
}

.info-label {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.1em;
}

.info-value {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-xs);
}

.info-detail,
.info-address {
  font-size: 1rem;
  color: var(--color-gray-dark);
  margin: var(--space-xs) 0;
}

.assembly-content {
  font-size: 1rem;
  line-height: 1.8;
}

.map-block {
  grid-column: 1 / -1;
}

.map-container {
  margin: var(--space-md) 0;
  border: 2px solid var(--color-gray-light);
}

.map-container iframe {
  display: block;
}

.map-btn {
  display: inline-block;
  margin-top: var(--space-sm);
  padding: 1rem 2rem;
  background-color: var(--color-black);
  color: var(--color-white);
  text-decoration: none;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: background-color var(--transition-fast);
}

.map-btn:hover,
.map-btn:focus {
  background-color: var(--color-accent);
  outline: 2px solid var(--color-black);
  outline-offset: 4px;
}

/* ===================================
   RSVP Trigger
   =================================== */
.rsvp-trigger {
  padding: var(--space-xl) var(--grid-gutter);
  background-color: var(--color-black);
  text-align: center;
}

.rsvp-trigger-container {
  max-width: var(--grid-max-width);
  margin: 0 auto;
}

.rsvp-btn {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: var(--space-md) var(--space-lg);
  background-color: var(--color-accent);
  color: var(--color-white);
  border: none;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: var(--font-weight-black);
  text-transform: uppercase;
  cursor: pointer;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
  letter-spacing: 0.05em;
}

.rsvp-btn:hover,
.rsvp-btn:focus {
  transform: scale(1.05);
  outline: 4px solid var(--color-white);
  outline-offset: 8px;
}

.rsvp-btn-primary {
  font-size: 1em;
}

.rsvp-btn-secondary {
  font-size: 0.5em;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.15em;
}

/* ===================================
   RSVP Modal
   =================================== */
.rsvp-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.rsvp-modal.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.8);
}

.modal-content {
  position: relative;
  background-color: var(--color-white);
  max-width: 800px;
  width: 90%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  z-index: 1;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md);
  border-bottom: 2px solid var(--color-black);
  background-color: var(--color-black);
  color: var(--color-white);
}

.modal-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  letter-spacing: 0.1em;
}

.close-btn {
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 2rem;
  cursor: pointer;
  padding: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast);
}

.close-btn:hover,
.close-btn:focus {
  transform: scale(1.2);
}

.modal-body {
  padding: var(--space-md);
  overflow-y: auto;
  flex: 1;
}

/* Mobile: Full screen sheet */
@media (max-width: 768px) {
  .rsvp-modal {
    align-items: flex-end;
  }

  .modal-content {
    width: 100%;
    max-width: 100%;
    max-height: 95vh;
    border-radius: 16px 16px 0 0;
  }
}

/* ===================================
   Form Selectors
   =================================== */
.selector-group {
  margin-bottom: var(--space-md);
}

.selector-group.hidden {
  display: none;
}

.selector-label {
  display: block;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-xs);
}

.selector-buttons {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.selector-btn {
  padding: 0.75rem 1.5rem;
  background-color: var(--color-white);
  color: var(--color-black);
  border: 2px solid var(--color-black);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.selector-btn:hover {
  background-color: var(--color-gray-light);
}

.selector-btn.active {
  background-color: var(--color-black);
  color: var(--color-white);
}

/* ===================================
   Form Styles
   =================================== */
.form-section {
  margin-bottom: var(--space-lg);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-md);
}

.form-section-title {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
  letter-spacing: 0.05em;
}

.add-btn {
  padding: 0.5rem 1rem;
  background-color: var(--color-accent);
  color: var(--color-white);
  border: none;
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.add-btn:hover,
.add-btn:focus {
  transform: scale(1.05);
}

.add-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.form-group {
  margin-bottom: var(--space-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-label {
  display: block;
  font-weight: var(--font-weight-bold);
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-label.required::after {
  content: ' *';
  color: var(--color-accent);
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--color-gray-mid);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-black);
  box-shadow: 0 0 0 2px var(--color-accent);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

.radio-group {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--color-gray-mid);
  transition: all var(--transition-fast);
}

.radio-label:hover {
  border-color: var(--color-black);
}

.radio-label input[type="radio"] {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
}

.radio-label input[type="radio"]:checked + span {
  font-weight: var(--font-weight-bold);
}

.form-help {
  font-size: 0.875rem;
  color: var(--color-gray-dark);
  margin-top: var(--space-xs);
}

/* ===================================
   Companions
   =================================== */
.companions-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.companion-block {
  padding: var(--space-md);
  border: 2px solid var(--color-gray-light);
  position: relative;
}

.companion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-sm);
}

.companion-title {
  font-size: 1.125rem;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
}

.remove-btn {
  padding: 0.5rem 1rem;
  background-color: transparent;
  color: var(--color-gray-dark);
  border: 2px solid var(--color-gray-mid);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.remove-btn:hover,
.remove-btn:focus {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

/* ===================================
   Form Actions
   =================================== */
.form-actions {
  margin-top: var(--space-lg);
  text-align: center;
}

.submit-btn {
  padding: 1rem 3rem;
  background-color: var(--color-black);
  color: var(--color-white);
  border: none;
  font-size: 1.25rem;
  font-weight: var(--font-weight-black);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 200px;
}

.submit-btn:hover:not(:disabled),
.submit-btn:focus:not(:disabled) {
  background-color: var(--color-accent);
  transform: scale(1.05);
}

.submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.submit-status {
  margin-top: var(--space-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.submit-status.hidden {
  display: none;
}

.status-spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-gray-light);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.status-text {
  font-weight: var(--font-weight-bold);
  font-size: 1.125rem;
}

.timeout-msg {
  color: var(--color-gray-dark);
  font-size: 0.875rem;
  max-width: 400px;
  text-align: center;
}

.timeout-msg.hidden {
  display: none;
}

/* ===================================
   Success Modal
   =================================== */
.success-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.success-modal.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.success-content {
  background-color: var(--color-white);
  padding: var(--space-lg);
  text-align: center;
  max-width: 500px;
  width: 90%;
  border: 4px solid var(--color-accent);
}

.success-title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: var(--space-md);
  letter-spacing: 0.05em;
}

.success-message {
  font-size: 1.125rem;
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

/* ===================================
   Honeypot (Anti-spam)
   =================================== */
.honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

/* ===================================
   Utility Classes
   =================================== */
.hidden {
  display: none !important;
}

.required {
  color: var(--color-accent);
}