/* ==========================================================================
   Reusable Components
   名前診断スタジオ — 和モダン × ぬくもり
   ========================================================================== */

/* =======================================================================
   Buttons
   ======================================================================= */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  min-height: 44px;
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  line-height: 1;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition:
    background-color var(--transition-default),
    color var(--transition-default),
    border-color var(--transition-default),
    box-shadow var(--transition-default),
    transform var(--transition-fast);
  user-select: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

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

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary — Terracotta with gradient */
.btn--primary {
  background: linear-gradient(135deg, var(--color-terracotta) 0%, var(--color-terracotta-dark) 100%);
  color: var(--color-white);
  border-color: var(--color-terracotta);
  box-shadow: 0 2px 8px rgba(196, 112, 75, 0.25);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--color-terracotta-light) 0%, var(--color-terracotta) 100%);
  border-color: var(--color-terracotta-dark);
  box-shadow: 0 4px 16px rgba(232, 114, 92, 0.35);
  transform: translateY(-2px) scale(1.02);
}

.btn--primary:active {
  background: linear-gradient(135deg, var(--color-terracotta-dark) 0%, var(--color-terracotta-dark) 100%);
  transform: translateY(1px);
  box-shadow: 0 1px 4px rgba(196, 112, 75, 0.2);
}

/* Secondary — Sage Green */
.btn--secondary {
  background-color: var(--color-sage);
  color: var(--color-white);
  border-color: var(--color-sage);
}

.btn--secondary:hover {
  background-color: var(--color-sage-dark);
  border-color: var(--color-sage-dark);
  box-shadow: var(--shadow-md);
}

/* Outline — Terracotta border */
.btn--outline {
  background-color: transparent;
  color: var(--color-terracotta);
  border-color: var(--color-terracotta);
}

.btn--outline:hover {
  background-color: var(--color-terracotta);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

/* Ghost — Subtle, no border */
.btn--ghost {
  background-color: transparent;
  color: var(--color-medium);
  border-color: transparent;
}

.btn--ghost:hover {
  background-color: var(--color-cream);
  color: var(--color-dark);
}

/* Size variants */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn--xl {
  padding: var(--space-4) var(--space-12);
  font-size: var(--text-xl);
}

/* Full width (mobile) */
.btn--block {
  display: flex;
  width: 100%;
}

/* =======================================================================
   Cards
   ======================================================================= */

.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  transition:
    box-shadow var(--transition-default),
    transform var(--transition-default);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-terracotta), var(--color-gold), var(--color-sage));
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
}

.card--interactive:hover {
  transform: translateY(-2px);
}

.card__header {
  margin-bottom: var(--space-4);
}

.card__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-2);
}

.card__body {
  color: var(--color-medium);
}

.card__footer {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
}

/* =======================================================================
   Input Group
   ======================================================================= */

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.input-group__label {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  letter-spacing: var(--tracking-wide);
}

.input-group__hint {
  font-size: var(--text-xs);
  color: var(--color-muted);
}

.input-group__error {
  font-size: var(--text-sm);
  color: var(--color-error);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* =======================================================================
   Input Field
   ======================================================================= */

.input-field {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  min-height: 48px;
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--weight-regular);
  color: var(--color-dark);
  background-color: var(--color-white);
  border: 2px solid var(--color-card-border);
  border-radius: var(--radius-md);
  transition:
    border-color var(--transition-default),
    box-shadow var(--transition-default),
    background-color var(--transition-default);
  -webkit-appearance: none;
  appearance: none;
}

/* Large touch target for mobile */
.input-field--lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-xl);
  border-radius: var(--radius-lg);
  min-height: 56px;
}

.input-field::placeholder {
  color: var(--color-muted);
  opacity: 0.7;
}

.input-field:hover {
  border-color: var(--color-terracotta-light);
}

.input-field:focus {
  outline: none;
  border-color: var(--color-terracotta);
  box-shadow: var(--shadow-input-focus);
  background-color: var(--color-white);
}

.input-field--error {
  border-color: var(--color-error);
}

.input-field--error:focus {
  box-shadow: var(--shadow-input-error);
}

.input-field--success {
  border-color: var(--color-success);
}

/* =======================================================================
   Badge — Fortune Ratings
   ======================================================================= */

.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  line-height: 1;
  border-radius: var(--radius-full);
  white-space: nowrap;
  letter-spacing: var(--tracking-wide);
}

/* 大吉 — Gold */
.badge--daikichi {
  background-color: var(--color-daikichi-bg);
  color: var(--color-daikichi);
  border: 1.5px solid var(--color-daikichi);
}

/* 吉 — Sage */
.badge--kichi {
  background-color: var(--color-kichi-bg);
  color: var(--color-kichi);
  border: 1.5px solid var(--color-kichi);
}

/* 半吉 — Blue */
.badge--hankichi {
  background-color: var(--color-hankichi-bg);
  color: var(--color-hankichi);
  border: 1.5px solid var(--color-hankichi);
}

/* 凶 — Orange */
.badge--kyo {
  background-color: var(--color-kyo-bg);
  color: var(--color-kyo);
  border: 1.5px solid var(--color-kyo);
}

/* 大凶 — Red */
.badge--daikyo {
  background-color: var(--color-daikyo-bg);
  color: var(--color-daikyo);
  border: 1.5px solid var(--color-daikyo);
}

/* Large badge variant */
.badge--lg {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-base);
}

/* =======================================================================
   Result Card — Fortune Display
   ======================================================================= */

.result-card {
  background-color: var(--color-white);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.result-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--color-terracotta) 0%,
    var(--color-gold) 50%,
    var(--color-sage) 100%
  );
}

.result-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
  gap: var(--space-2);
}

.result-card__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
}

.result-card__number {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-black);
  color: var(--color-terracotta);
  line-height: 1;
}

.result-card__description {
  font-size: var(--text-base);
  color: var(--color-medium);
  line-height: var(--leading-relaxed);
}

/* =======================================================================
   Progress Bar — Score Visualization
   ======================================================================= */

.progress-bar {
  width: 100%;
  height: 12px;
  background-color: var(--color-cream);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-bar__fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 1s cubic-bezier(0.34, 1.56, 0.64, 1);
  background: linear-gradient(
    90deg,
    var(--color-terracotta-light) 0%,
    var(--color-terracotta) 100%
  );
  position: relative;
}

/* Shimmer overlay on progress bar */
.progress-bar__fill::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.3) 50%,
    transparent 100%
  );
}

@media (hover: hover) and (pointer: fine) {
  .progress-bar__fill::after {
    animation: shimmer 2s ease-in-out infinite;
  }
}

/* Color variants */
.progress-bar--gold .progress-bar__fill {
  background: linear-gradient(90deg, var(--color-gold-light), var(--color-gold));
}

.progress-bar--sage .progress-bar__fill {
  background: linear-gradient(90deg, var(--color-sage-light), var(--color-sage));
}

/* Size variants */
.progress-bar--sm {
  height: 6px;
}

.progress-bar--lg {
  height: 20px;
  border-radius: var(--radius-md);
}

.progress-bar--lg .progress-bar__fill {
  border-radius: var(--radius-md);
}

/* =======================================================================
   Divider — Decorative Section Separator
   ======================================================================= */

.divider {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin: var(--space-8) 0;
}

.divider::before,
.divider::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-card-border),
    transparent
  );
}

.divider__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  font-size: var(--text-lg);
}

/* Japanese pattern variant — diamond shape */
.divider--pattern .divider__icon::before {
  content: "";
  display: block;
  width: 10px;
  height: 10px;
  background-color: var(--color-gold);
  transform: rotate(45deg);
  opacity: 0.5;
}

/* Dot variant */
.divider--dots::before,
.divider--dots::after {
  background: none;
  border-bottom: 2px dotted var(--color-card-border);
  height: 0;
}

/* Triple line (Japanese-inspired) */
.divider--triple {
  flex-direction: column;
  gap: var(--space-1);
}

.divider--triple::before,
.divider--triple::after {
  display: none;
}

.divider--triple .divider__lines {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 60px;
  align-self: center;
}

.divider--triple .divider__lines span {
  display: block;
  height: 1px;
  background-color: var(--color-card-border);
}

.divider--triple .divider__lines span:nth-child(2) {
  width: 80%;
  align-self: center;
}

/* =======================================================================
   Navigation
   ======================================================================= */

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) 0;
  max-width: 100%;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-divider);
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background-color: var(--color-white);
}


.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-dark);
}

.nav__logo {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  object-fit: cover;
}

.nav__title {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-black);
  color: var(--color-dark);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav__link {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-medium);
  text-decoration: none;
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.nav__link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-terracotta);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition-default);
  border-radius: var(--radius-full);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-terracotta);
}

.nav__link:hover::after,
.nav__link--active::after {
  transform: scaleX(1);
}

/* Mobile nav toggle */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-dark);
  border-radius: var(--radius-full);
  transition: transform var(--transition-default);
}

@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background-color: var(--color-white);
    border-bottom: 1px solid var(--color-divider);
    padding: var(--space-4);
    box-shadow: var(--shadow-md);
  }

  .nav__links--open {
    display: flex;
  }

  .nav__link {
    padding: var(--space-3) var(--space-4);
    width: 100%;
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  .nav__link::after {
    display: none;
  }
}

/* =======================================================================
   Footer
   ======================================================================= */

.footer {
  background-color: var(--color-cream);
  border-top: 1px solid var(--color-divider);
  padding: var(--space-12) var(--gutter) var(--space-8);
  margin-top: var(--space-16);
}

.footer__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

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

@media (min-width: 1024px) {
  .footer__inner {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__brand-name {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
}

.footer__brand-desc {
  font-size: var(--text-sm);
  color: var(--color-muted);
  line-height: var(--leading-relaxed);
  max-width: 360px;
}

.footer__heading {
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  color: var(--color-dark);
  margin-bottom: var(--space-4);
  letter-spacing: var(--tracking-wide);
}

.footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.footer__link {
  font-size: var(--text-sm);
  color: var(--color-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-terracotta);
}

.footer__bottom {
  max-width: var(--container-max);
  margin: var(--space-8) auto 0;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  text-align: center;
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-muted);
}

/* =======================================================================
   Loading Spinner
   ======================================================================= */

.spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--color-card-border);
  border-top-color: var(--color-terracotta);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.spinner--lg {
  width: 48px;
  height: 48px;
  border-width: 4px;
}

/* =======================================================================
   Tooltip
   ======================================================================= */

.tooltip {
  position: relative;
  cursor: help;
}

.tooltip__text {
  position: absolute;
  bottom: calc(100% + var(--space-2));
  left: 50%;
  transform: translateX(-50%);
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-dark);
  color: var(--color-white);
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
  z-index: var(--z-above);
}

.tooltip:hover .tooltip__text,
.tooltip:focus-within .tooltip__text {
  opacity: 1;
  visibility: visible;
}

/* =======================================================================
   Alert / Notice
   ======================================================================= */

.alert {
  padding: var(--space-4) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
}

.alert--info {
  background-color: var(--color-info-light);
  color: var(--color-info);
  border: 1px solid var(--color-info);
}

.alert--success {
  background-color: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.alert--warning {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
  border: 1px solid var(--color-warning);
}

.alert--error {
  background-color: var(--color-error-light);
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

/* =======================================================================
   CTA Section — 共通
   ======================================================================= */

.section-cta {
  position: relative;
  text-align: center;
  margin-top: var(--space-8);
}

.cta-illustration {
  display: block;
  width: 280px;
  max-width: 60%;
  margin: 0 auto var(--space-4);
  opacity: 0.7;
  pointer-events: none;
}

@media (max-width: 767px) {
  .cta-illustration {
    width: 200px;
    opacity: 0.55;
  }
}

/* =======================================================================
   Data Load Error Banner
   ======================================================================= */

.data-load-error {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-6);
  background-color: #fef2f2;
  border-bottom: 2px solid #ef4444;
  color: #991b1b;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  text-align: center;
}

.data-load-error p {
  margin: 0;
}

.data-load-error button {
  padding: var(--space-2) var(--space-4);
  background-color: #ef4444;
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
  cursor: pointer;
  white-space: nowrap;
  transition: background-color var(--transition-fast);
}

.data-load-error button:hover {
  background-color: #dc2626;
}

@media (max-width: 480px) {
  .data-load-error {
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
  }
}