/* ============================================
   ZEITREISE – Shared Components
   ============================================ */

/* ---- Loader ---- */
.loader {
  position: fixed;
  inset: 0;
  z-index: var(--z-loader);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--brand-dark);
  transition: opacity 0.6s var(--ease-out-expo), visibility 0.6s;
}

.loader.is-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader__inner {
  text-align: center;
}

.loader__disc {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-lg);
  color: var(--brand-primary);
}

.loader__disc-svg {
  width: 100%;
  height: 100%;
  animation: loader-spin 3s linear infinite;
}

.loader__hand {
  transform-origin: 50px 50px;
  animation: loader-tick 1s steps(12) infinite;
}

.loader__text {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-md);
}

.loader__bar {
  width: 200px;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  margin: 0 auto;
  overflow: hidden;
  border-radius: 2px;
}

.loader__bar-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--brand-primary);
  animation: loader-progress 1.5s var(--ease-out-expo) forwards;
}

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

@keyframes loader-tick {
  to { transform: rotate(360deg); }
}

@keyframes loader-progress {
  to { width: 100%; }
}

/* ---- Custom Cursor ---- */
.cursor {
  position: fixed;
  top: 0;
  left: 0;
  z-index: var(--z-cursor);
  pointer-events: none;
  mix-blend-mode: difference;
}

.cursor__ring {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.6);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.3s, height 0.3s, border-color 0.3s;
}

.cursor__dot {
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 6px;
  background: var(--brand-primary);
  border-radius: 50%;
  transform: translate(-50%, -50%);
}

.cursor.is-hover .cursor__ring {
  width: 60px;
  height: 60px;
  border-color: var(--brand-primary);
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  padding: 0 clamp(1rem, 4vw, 2rem);
  background: linear-gradient(to bottom, rgba(10, 10, 18, 0.9), transparent);
  transition: background 0.3s, backdrop-filter 0.3s;
}

.nav.is-scrolled {
  background: rgba(10, 10, 18, 0.95);
  backdrop-filter: blur(12px);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.15em;
}

.nav__logo-icon {
  width: 32px;
  height: 32px;
  color: var(--brand-primary);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  transition: transform 0.3s, opacity 0.3s;
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 2rem);
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0.8;
  transition: opacity 0.2s, color 0.2s;
}

.nav__link:hover,
.nav__link:focus-visible {
  opacity: 1;
  color: var(--brand-primary);
}

.nav__link--cta {
  padding: 0.5rem 1.25rem;
  background: var(--brand-primary);
  color: white !important;
  border-radius: 2px;
  opacity: 1;
}

.nav__link--cta:hover {
  background: #c1121f;
}

/* ---- Scroll Progress ---- */
.scroll-progress {
  position: fixed;
  right: clamp(0.5rem, 2vw, 1.5rem);
  top: 50%;
  transform: translateY(-50%);
  z-index: var(--z-progress);
  pointer-events: none;
}

.scroll-progress__track {
  width: 3px;
  height: 120px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  position: relative;
  overflow: visible;
}

.scroll-progress__fill {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 0%;
  background: linear-gradient(to top, var(--brand-primary), var(--brand-secondary));
  border-radius: 3px;
  transition: height 0.1s linear;
}

.scroll-progress__year {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  color: rgba(255, 255, 255, 0.5);
  white-space: nowrap;
}

/* ---- Portal Ring (shared motif) ---- */
.portal-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.portal-ring--1 { width: 300px; height: 300px; }
.portal-ring--2 { width: 450px; height: 450px; opacity: 0.6; }
.portal-ring--3 { width: 600px; height: 600px; opacity: 0.3; }

/* ---- Section Header ---- */
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-xl);
  padding: 0 var(--space-md);
}

.section-header__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brand-primary);
  margin-bottom: var(--space-sm);
}

.section-header__title {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: var(--space-md);
}

.section-header__desc {
  font-size: 1.1rem;
  opacity: 0.7;
  line-height: 1.7;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 2px;
  transition: background 0.3s, transform 0.2s;
}

.btn--primary {
  background: var(--brand-primary);
  color: white;
  width: 100%;
}

.btn--primary:hover {
  background: #c1121f;
}

.btn--primary:active {
  transform: scale(0.98);
}

.btn.is-loading .btn__text { display: none; }
.btn.is-loading .btn__loading { display: inline; }
.btn__loading { display: none; }

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
  letter-spacing: 0.03em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: white;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px;
  transition: border-color 0.2s, background 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--brand-primary);
  background: rgba(255, 255, 255, 0.08);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.3);
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 5l3 3 3-3' fill='none' stroke='%23fff' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
}

.form-group select option {
  background: var(--brand-dark);
}

.form-group.has-error input,
.form-group.has-error textarea {
  border-color: #e63946;
}

.form-error {
  display: block;
  font-size: 0.8rem;
  color: #e63946;
  margin-top: var(--space-xs);
  min-height: 1.2em;
}

.form-status {
  margin-top: var(--space-md);
  padding: var(--space-md);
  border-radius: 4px;
  font-size: 0.9rem;
  display: none;
}

.form-status.is-success {
  display: block;
  background: rgba(42, 157, 143, 0.15);
  border: 1px solid var(--brand-accent);
  color: var(--brand-accent);
}

.form-status.is-error {
  display: block;
  background: rgba(230, 57, 70, 0.15);
  border: 1px solid var(--brand-primary);
  color: var(--brand-primary);
}