/* ==========================================================================
   Vittoria Iannotta — personal site
   One stylesheet: fonts, colors, spacing, buttons, animation, responsiveness
   ========================================================================== */

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@600;700;800&family=Inter:wght@400;500;600&display=swap");

:root {
  --bg: #f5f5f2;
  --surface: #ffffff;
  --text: #1a1a1a;
  --text-light: #5a5a5a;
  --border: #e3e2dd;

  --amber: #e8a33d;
  --coral: #e2542f;
  --teal: #4fa8a3;

  --font-display: "Poppins", "Segoe UI", Arial, sans-serif;
  --font-body: "Inter", "Segoe UI", Arial, sans-serif;

  --max-width: 1100px;
  --radius: 14px;
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
  --transition: all 0.25s ease;
}

/* ---------- Reset ---------- */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0;
}

.wrapper {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.wrapper--wide {
  max-width: 1400px;
}

/* ---------- Header / nav ---------- */
.site-header {
  padding: 1.75rem 0;
}

.site-header .wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  font-family: var(--font-display);
}

.logo-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--amber);
  display: inline-block;
  flex-shrink: 0;
  align-self: center;
}

.logo-text {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}

.logo-role {
  font-size: 0.85rem;
  color: var(--text-light);
  font-family: var(--font-body);
}

.main-nav {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text);
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  border-bottom-color: var(--coral);
}

/* ---------- Hero ---------- */
.hero {
  padding: 3rem 0 5rem;
}

.hero .wrapper {
  display: flex;
  align-items: center;
  gap: 4rem;
}

.hero-photo {
  flex: 0 0 auto;
  width: 320px;
}

.hero-photo .photo-frame {
  position: relative;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-content {
  flex: 1 1 auto;
  min-width: 0;
}

.eyebrow {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 0.75rem;
}

.hero-content h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 800;
  margin-bottom: 1.25rem;
}

.hero-content h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
}

.bio p {
  color: var(--text-light);
  max-width: 46em;
  margin: 0 0 0.9rem;
}

.bio strong {
  color: var(--text);
}

.bio a {
  color: var(--text);
  text-decoration: underline;
  text-decoration-color: var(--amber);
  text-underline-offset: 2px;
}

.bio a:hover {
  color: var(--amber);
}

/* ---------- Pill / circle buttons ---------- */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-top: 2rem;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 110px;
  height: 110px;
  border-radius: 50%;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  text-align: center;
  color: #1a1a1a;
  box-shadow: var(--shadow);
  transition: var(--transition);
  padding: 0.5rem;
}

.cta-btn:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.cta-btn--amber { background: var(--amber); }
.cta-btn--coral { background: var(--coral); color: #fff; }
.cta-btn--teal  { background: var(--teal); color: #fff; }

/* Rectangular button variant (used on Projects/CV pages) */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.9rem;
  font-family: var(--font-body);
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn--amber { background: var(--amber); color: #1a1a1a; }
.btn--coral { background: var(--coral); color: #fff; }
.btn--teal  { background: var(--teal); color: #fff; }

.btn--outline {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* ---------- Generic section / fade-in ---------- */
.section {
  padding: 4rem 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
}

.fade-in {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Projects (plain text + picture rows) ---------- */
.projects-list {
  display: flex;
  flex-direction: column;
  gap: 6rem;
  margin-top: 3rem;
}

.project-row {
  display: flex;
  align-items: flex-start;
  gap: 4rem;
}

.project-row__text {
  flex: 3 1 0;
  min-width: 0;
}

.project-row__text h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.project-row__text p {
  color: var(--text-light);
  margin: 0 0 1rem;
}

.project-row__authors {
  font-style: italic;
}

.project-row__text a {
  color: var(--text);
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: var(--amber);
  text-underline-offset: 2px;
}

.project-row__text a:hover {
  color: var(--amber);
}

.project-row__image {
  flex: 2 1 0;
  min-width: 0;
}

.project-row__image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ---------- CV page ---------- */
.cv-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.cv-timeline {
  margin-top: 1rem;
}

.cv-section {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  padding: 3rem 0;
  border-top: 1px solid var(--border);
}

.cv-section:first-child {
  border-top: none;
  padding-top: 1rem;
}

.cv-section__label h2 {
  font-size: 1.6rem;
  font-weight: 700;
}

.cv-entries {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.cv-entry {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 2rem;
}

.cv-entry__date {
  color: var(--text-light);
  font-size: 0.9rem;
  white-space: nowrap;
  padding-top: 0.2rem;
}

.cv-entry__content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.cv-entry__content p {
  color: var(--text-light);
  margin: 0;
}

.cv-entry--award .cv-entry__content h3 {
  font-size: 1.3rem;
  color: var(--coral);
}

.cv-section--teaching .cv-entry__content h3 {
  font-weight: 400;
  font-style: italic;
}

.cv-section--presentations .cv-entries {
  gap: 0.75rem;
}

.cv-section--presentations .cv-entry__content h3 {
  font-weight: 400;
}

.cv-entry__content p strong {
  color: var(--text);
}

.cv-date {
  color: var(--text-light);
  font-size: 0.9em;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 3rem 0 2rem;
  margin-top: 2rem;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.6rem;
  color: var(--text-light);
}

.footer-col a {
  font-size: 0.95rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--coral);
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
}

.footer-bottom {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-light);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 800px) {
  .hero .wrapper {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
  }

  .hero-photo,
  .hero-photo .photo-frame {
    width: 220px;
    height: 220px;
  }

  .cta-row {
    justify-content: center;
  }

  .bio p {
    margin-left: auto;
    margin-right: auto;
  }

  .main-nav {
    gap: 1.25rem;
  }

  .project-row {
    flex-direction: column;
    align-items: stretch;
    gap: 1.5rem;
  }

  .projects-list {
    gap: 3.5rem;
  }

  .cv-section {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .cv-entry {
    grid-template-columns: 1fr;
    gap: 0.35rem;
  }
}

@media (max-width: 480px) {
  .wrapper {
    padding: 0 1.25rem;
  }

  .cta-btn {
    width: 92px;
    height: 92px;
    font-size: 0.85rem;
  }
}