/* components.css — Gal Nachum site components */

/* ===== SKIP LINK ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  z-index: 200;
  text-decoration: none;
}
.skip-link:focus { top: var(--space-4); }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition-interactive),
              color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--shadow-md);
}
.btn-primary:active { background: var(--color-primary-active); }

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.btn-lg {
  padding: var(--space-3) var(--space-8);
  font-weight: 600;
}

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.06);
  transition: box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.header--scrolled {
  box-shadow: var(--shadow-sm);
}

.header__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.header__brand { flex-shrink: 0; }

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}
.header__logo-mark { flex-shrink: 0; border-radius: var(--radius-full); object-fit: cover; }

.header__name-group {
  display: flex;
  flex-direction: column;
}
.header__name {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  line-height: 1.2;
}
.header__subtitle {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.3;
}

.header__nav { flex: 1; display: flex; justify-content: center; }

.header__nav-list {
  display: flex;
  gap: var(--space-1);
  list-style: none;
}
.header__nav-link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: color var(--transition-interactive),
              background var(--transition-interactive);
}
.header__nav-link:hover,
.header__nav-link.active {
  color: var(--color-text);
  background: oklch(from var(--color-text) l c h / 0.06);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.theme-toggle {
  padding: var(--space-2);
  color: var(--color-text-muted);
  border-radius: var(--radius-md);
  transition: color var(--transition-interactive),
              background var(--transition-interactive);
}
.theme-toggle:hover {
  color: var(--color-text);
  background: oklch(from var(--color-text) l c h / 0.06);
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform var(--transition-interactive),
              opacity var(--transition-interactive);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Mobile Nav */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 90;
  background: oklch(from var(--color-bg) l c h / 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.mobile-nav.active {
  opacity: 1;
  pointer-events: all;
}
.mobile-nav__list {
  list-style: none;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.mobile-nav__link {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.mobile-nav__link:hover { color: var(--color-primary); }
.mobile-nav__cta { margin-top: var(--space-8); }

/* ===== HERO ===== */
.hero {
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding: var(--space-16) var(--space-6) var(--space-12);
}
.hero__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  width: 100%;
}
.hero__content { display: flex; flex-direction: column; gap: var(--space-6); }
.hero__headline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  line-height: 1.08;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.hero__quote {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-5);
  max-width: 48ch;
}
.hero__quote p {
  font-size: var(--text-sm);
  font-style: italic;
  color: var(--color-text-muted);
  line-height: 1.7;
}
.hero__actions { display: flex; gap: var(--space-4); align-items: center; }
.hero__image {
  display: flex;
  justify-content: center;
  align-items: center;
}
.hero__image img {
  width: 100%;
  max-width: 380px;
  height: auto;
  border-radius: var(--radius-xl);
  object-fit: cover;
  object-position: top center;
  filter: drop-shadow(0 12px 32px oklch(0 0 0 / 0.4));
}

/* ===== SECTIONS ===== */
.section {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) var(--space-6);
}
.section__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
}
.section__header {
  margin-bottom: var(--space-12);
}
.section__label {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  max-width: 36ch;
}

/* ===== ABOUT ===== */
.about { background: var(--color-surface); }
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}
.about__image img {
  width: 100%;
  max-width: 420px;
  border-radius: var(--radius-xl);
  object-fit: cover;
  aspect-ratio: 1/1;
}
.about__text p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 56ch;
}

/* ===== PUBLICATIONS ===== */
.publications__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(340px, 100%), 1fr));
  gap: var(--space-4);
}
.pub-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid oklch(from var(--color-text) l c h / 0.08);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: var(--color-text);
  position: relative;
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
}
.pub-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.pub-card:active { transform: translateY(0); }
.pub-card__source {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  padding: var(--space-1) var(--space-3);
  background: var(--color-primary-highlight);
  border-radius: var(--radius-full);
  width: fit-content;
}
.pub-card__logo {
  width: 100%;
  height: 48px;
  display: flex;
  align-items: center;
  margin-bottom: var(--space-1);
}
.pub-card__logo img {
  max-height: 36px;
  max-width: 140px;
  width: auto;
  height: auto;
  object-fit: contain;
  filter: grayscale(0.3);
  transition: filter var(--transition-interactive);
}
.pub-card:hover .pub-card__logo img {
  filter: grayscale(0);
}
.pub-card__title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.4;
  flex: 1;
}
.pub-card__arrow {
  color: var(--color-text-faint);
  transition: color var(--transition-interactive),
              transform var(--transition-interactive);
  align-self: flex-end;
}
.pub-card:hover .pub-card__arrow {
  color: var(--color-primary);
  transform: translate(2px, -2px);
}

/* ===== SERVICES ===== */
.services { background: var(--color-surface); }
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(260px, 100%), 1fr));
  gap: var(--space-6);
}
.service-card {
  padding: var(--space-8);
  background: var(--color-bg);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.service-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-highlight);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}
.service-card__image {
  width: 100%;
  aspect-ratio: 1/1;
  overflow: hidden;
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
}
.service-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}
.service-card:hover .service-card__image img {
  transform: scale(1.04);
}
.service-card__name {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
}
.service-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ===== CONTACT ===== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}
.contact__image img {
  width: 100%;
  max-width: 480px;
  border-radius: var(--radius-xl);
  object-fit: cover;
  aspect-ratio: 4/5;
}
.contact__subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  max-width: 42ch;
}

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.contact-form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.form-group label {
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
}
.form-group .required { color: var(--color-error); }
.form-group input,
.form-group textarea {
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--color-text);
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
  -webkit-appearance: none;
  appearance: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-faint);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}
.form-group textarea {
  resize: vertical;
  min-height: 120px;
}
.contact-form__submit {
  align-self: flex-start;
  margin-top: var(--space-2);
}

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--color-divider);
  padding: var(--space-8) var(--space-6);
}
.footer__inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}
.footer__copy {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}
.footer__pplx {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-decoration: none;
  transition: color var(--transition-interactive);
}
.footer__pplx:hover { color: var(--color-text-muted); }

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.fade-in--visible {
  opacity: 1;
}

/* Hero headline slide-up animation */
@keyframes slideUpIn {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__headline {
  opacity: 0;
  transform: translateY(40px);
}

.hero__headline.slide-up--visible {
  animation: slideUpIn 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transition: none; }
  .hero__headline {
    opacity: 1;
    transform: none;
  }
  .hero__headline.slide-up--visible {
    animation: none;
  }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .header__nav { display: none; }
  .header__cta { display: none; }
  .hamburger { display: flex; }

  .hero__inner { grid-template-columns: 1fr; text-align: center; }
  .hero__content { align-items: center; }
  .hero__quote { text-align: left; }
  .hero__actions { justify-content: center; }
  .hero__image { order: -1; }
  .hero__image img { max-width: 300px; }

  .about__grid { grid-template-columns: 1fr; text-align: center; }
  .about__image { display: flex; justify-content: center; }
  .about__image img { max-width: 300px; }
  .about__text { display: flex; flex-direction: column; align-items: center; }
  .about__text p { text-align: left; }

  .contact__grid { grid-template-columns: 1fr; }
  .contact__image { display: flex; justify-content: center; }
  .contact__image img { max-width: 360px; }
}

@media (max-width: 640px) {
  .header__inner { padding: var(--space-3) var(--space-4); }
  .header__subtitle { display: none; }

  .hero {
    min-height: auto;
    padding: var(--space-12) var(--space-4) var(--space-8);
  }
  .hero__headline { font-size: clamp(1.75rem, 6vw, 2.5rem); }
  .hero__image img { max-width: 240px; }
  .hero__actions { flex-direction: column; width: 100%; }
  .hero__actions .btn { width: 100%; justify-content: center; }

  .section { padding: var(--space-10) var(--space-4); }
  .section__header { margin-bottom: var(--space-8); }

  .publications__grid { grid-template-columns: 1fr; }
  .services__grid { grid-template-columns: 1fr; }

  .contact-form__row { grid-template-columns: 1fr; }

  .footer__inner { flex-direction: column; text-align: center; }
}

/* ===== ACTIVE (tap) STATES ===== */
@media (hover: none) {
  .btn:active { opacity: 0.85; }
  .pub-card:active { border-color: var(--color-primary); }
  .header__nav-link:active { background: oklch(from var(--color-text) l c h / 0.08); }
}