/* =============================================
   BULNES GUITARS — Stylesheet
   ============================================= */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --black: #111111;
  --white: #ffffff;
  --gray-100: #f5f5f5;
  --gray-200: #e5e5e5;
  --gray-400: #999999;
  --gray-600: #555555;

  --font-logo: 'Syncopate', sans-serif;
  --font-display: 'Bebas Neue', sans-serif;
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'DM Sans', system-ui, sans-serif;

  --nav-height: 72px;
  --container-max: 1160px;
  --container-pad: clamp(1.5rem, 5vw, 4rem);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

/* ── Utility ── */

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ── Fade-in animation ── */

.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.fade-in.visible {
  opacity: 1;
  transform: none;
}


/* =============================================
   NAVEGACIÓN
   ============================================= */

#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-inline: var(--container-pad);
  background: transparent;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  color: var(--black);
  transition: color 0.4s;
}

.logo-mark {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 4px;
}

.logo-wordmark {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  transition: color 0.4s;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--black);
  text-decoration: none;
  position: relative;
  transition: color 0.4s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.3s var(--ease-out);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-toggle span {
  transition: background 0.4s, transform 0.3s var(--ease-out), opacity 0.3s;
}

/* Nav sobre fondo oscuro (hero): solo los enlaces cambian a blanco */
#navbar.nav-light .nav-links a {
  color: var(--white);
}

#navbar.nav-light .nav-toggle span {
  background: var(--white);
}

/* Nav sobre The Process (fondo negro): todo el menú pasa a blanco */
#navbar.nav-all-white .nav-logo,
#navbar.nav-all-white .logo-wordmark,
#navbar.nav-all-white .nav-links a,
#navbar.nav-all-white .nav-instagram {
  color: var(--white);
}

#navbar.nav-all-white .nav-toggle span {
  background: var(--white);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--black);
  transition: transform 0.3s var(--ease-out), opacity 0.3s;
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  transform: translateY(-7.5px) rotate(-45deg);
}


/* =============================================
   HERO
   ============================================= */

#hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
  overflow: hidden;
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 4rem clamp(2rem, 4vw, 4rem) 4rem clamp(2rem, 7vw, 8rem);
}

.hero-eyebrow {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 1.5rem;
}

.hero-logo-wrap {
  overflow: hidden;
  max-width: 520px;
  margin-left: -2.5rem;
  margin-bottom: 1.5rem;
}

.hero-logo-img {
  display: block;
  width: calc(100% + 28px);
  margin: -14px;
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.15rem);
  font-weight: 300;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 3rem;
}

.btn-primary {
  display: inline-block;
  padding: 0.9rem 2.5rem;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--black);
  cursor: pointer;
  transition: background 0.25s, color 0.25s;
}

.btn-primary:hover {
  background: var(--white);
  color: var(--black);
}

button.btn-primary {
  font-family: var(--font-sans);
}

.hero-visual {
  position: relative;
  overflow: hidden;
}

.hero-photo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
}

/* Scroll hint */
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.scroll-line {
  display: block;
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--black), transparent);
  animation: scroll-line 2s ease-in-out infinite;
}

@keyframes scroll-line {
  0%   { transform: scaleY(0); transform-origin: top; opacity: 1; }
  50%  { transform: scaleY(1); transform-origin: top; opacity: 1; }
  51%  { transform: scaleY(1); transform-origin: bottom; opacity: 1; }
  100% { transform: scaleY(0); transform-origin: bottom; opacity: 0; }
}


/* =============================================
   SECTION SHARED
   ============================================= */

section:not(#hero) {
  padding-block: clamp(5rem, 10vw, 9rem);
}

#sobre-mi { background: var(--gray-100); }
#guitarras { background: var(--white); }
#contacto  { background: var(--gray-100); }

.section-header {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.section-number {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--gray-400);
  padding-top: 0.5rem;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.01em;
}

.section-intro {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  font-weight: 300;
  color: var(--gray-600);
  max-width: 52ch;
  margin-bottom: 3.5rem;
  line-height: 1.75;
}


/* =============================================
   SOBRE MÍ
   ============================================= */

.about-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 4rem;
  align-items: start;
}

.about-text p {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--gray-600);
  margin-bottom: 1.25rem;
}

.about-lead {
  font-family: var(--font-serif);
  font-size: clamp(1.3rem, 2.5vw, 1.65rem) !important;
  font-weight: 400;
  font-style: italic;
  color: var(--black) !important;
  margin-bottom: 1.75rem !important;
  line-height: 1.5 !important;
}

.about-aside {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  min-width: 180px;
}

.about-stat {
  border-top: 1px solid var(--gray-200);
  padding-top: 1rem;
}

.stat-number {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.02em;
}

.stat-label {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-top: 0.4rem;
}


/* =============================================
   GUITARRAS
   ============================================= */

.guitars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5px;
  background: var(--gray-200);
  border: 1.5px solid var(--gray-200);
}

.guitar-card {
  background: var(--white);
  display: flex;
  flex-direction: column;
}

.guitar-card-visual {
  aspect-ratio: 4 / 3;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  transition: background 0.4s;
}

.guitar-card-visual--dark {
  background: var(--black);
}

.guitar-card:hover .guitar-card-visual {
  background: var(--gray-200);
}

.guitar-card:hover .guitar-card-visual--dark {
  background: #222;
}

.guitar-model-code {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 8vw, 5.5rem);
  font-weight: 300;
  letter-spacing: -0.03em;
  color: var(--gray-200);
  user-select: none;
  transition: color 0.3s;
}

.guitar-card-visual--dark .guitar-model-code {
  color: #333;
}

.guitar-card:hover .guitar-model-code {
  color: var(--gray-400);
}

.guitar-card-info {
  padding: 2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.guitar-name {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
}

.guitar-specs {
  list-style: none;
  flex: 1;
  margin-bottom: 1.75rem;
}

.guitar-specs li {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding-block: 0.55rem;
  border-bottom: 1px solid var(--gray-200);
  font-size: 0.9rem;
  color: var(--gray-600);
}

.guitar-specs li span {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-400);
}

.btn-link {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--black);
  text-decoration: none;
  position: relative;
  align-self: flex-start;
}

.btn-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--black);
  transform: scaleX(0.4);
  transform-origin: left;
  transition: transform 0.3s var(--ease-out);
}

.btn-link:hover::after {
  transform: scaleX(1);
}


/* =============================================
   CONTACTO
   ============================================= */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 5rem;
  align-items: start;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
}

.form-group input,
.form-group textarea {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 300;
  color: var(--black);
  background: var(--white);
  border: none;
  border-bottom: 1px solid var(--gray-200);
  padding: 0.6rem 0;
  outline: none;
  transition: border-color 0.25s;
  resize: none;
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--black);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--gray-200);
}

.form-notice {
  font-size: 0.85rem;
  min-height: 1.2em;
  color: var(--gray-600);
}

.form-notice.success { color: #2d7a4f; }
.form-notice.error   { color: #b91c1c; }

.contact-aside {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  padding-top: 0.5rem;
}

.contact-info h3 {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 0.6rem;
}

.contact-link {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--black);
  text-decoration: none;
  border-bottom: 1px solid var(--gray-200);
  transition: border-color 0.25s;
}

.contact-link:hover {
  border-color: var(--black);
}

.contact-info p {
  font-size: 0.9rem;
  color: var(--gray-600);
  line-height: 1.7;
}

.contact-logo {
  display: block;
  width: 52px;
  height: 52px;
  margin-bottom: 1.25rem;
  border-radius: 6px;
}

.contact-instagram {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-instagram {
  position: absolute;
  left: 42%;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--black);
  text-decoration: none;
  white-space: nowrap;
}

.nav-instagram::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--black);
  transition: width 0.3s var(--ease-out);
}

.nav-instagram:hover::after {
  width: 100%;
}



/* =============================================
   THE PROCESS
   ============================================= */

#process {
  background: var(--black);
  color: var(--white);
}

#process .section-number {
  color: rgba(255, 255, 255, 0.25);
}

#process .section-title {
  color: var(--white);
}

.process-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.process-text p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.85;
  margin-bottom: 1.25rem;
}

.process-lead {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-style: italic;
  color: var(--white) !important;
  margin-bottom: 1.5rem !important;
}

.process-photos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.6rem;
}

.process-photo-slot {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
}

.process-photo-slot--wide {
  grid-column: 1 / -1;
  aspect-ratio: 16 / 7;
}

.photo-coming-soon {
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.2);
}

/* =============================================
   FOOTER
   ============================================= */

#footer {
  padding-block: 2.5rem;
  border-top: 1px solid var(--gray-200);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #C41A1A;
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--gray-400);
}

.footer-nav {
  display: flex;
  gap: 2rem;
}

.footer-nav a {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-400);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-nav a:hover {
  color: var(--black);
}


/* =============================================
   RESPONSIVE
   ============================================= */

@media (max-width: 900px) {
  #hero {
    grid-template-columns: 1fr;
    grid-template-rows: auto 70vw;
    min-height: unset;
  }

  .hero-content {
    text-align: center;
    padding: 4rem var(--container-pad) 3rem;
  }

  .hero-visual {
    display: block;
    height: 70vw;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-aside {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 1.5rem;
  }

  .about-stat {
    min-width: 140px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .contact-logo {
    margin-top: 1rem;
  }
}

@media (max-width: 820px) {
  .nav-links {
    position: fixed;
    inset: var(--nav-height) 0 0 0;
    background: var(--white);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    transform: translateX(100%);
    transition: transform 0.4s var(--ease-out);
  }

  .nav-links.open {
    transform: translateX(0);
  }

  .nav-links a {
    font-size: 1.1rem;
    letter-spacing: 0.08em;
  }

  #navbar.nav-light .nav-links a {
    color: var(--black);
  }

  #navbar.nav-light .nav-toggle span {
    background: var(--black);
  }

  /* En móvil, los enlaces del desplegable (sobre fondo blanco) siempre negros */
  #navbar.nav-all-white .nav-links a {
    color: var(--black);
  }

  .nav-toggle {
    display: flex;
  }

  .nav-instagram {
    display: none;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
  }

  .process-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }

  .process-photos {
    grid-template-columns: 1fr 1fr;
  }

  .process-photo-slot--wide {
    grid-column: 1 / -1;
  }
}


/* =============================================
   LIGHTBOX
   ============================================= */

.gallery-trigger {
  cursor: pointer;
}

.guitar-name.gallery-trigger:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.lightbox[hidden] {
  display: none;
}

.lightbox-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  cursor: pointer;
}

.lightbox-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  width: 100%;
  max-width: 800px;
}

.lightbox-close {
  position: absolute;
  top: -2.75rem;
  right: 0;
  background: none;
  border: none;
  color: var(--white);
  font-size: 2.2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  opacity: 0.8;
  transition: opacity 0.2s;
}

.lightbox-close:hover {
  opacity: 1;
}

.lightbox-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  width: 100%;
}

.lightbox-media {
  flex: 1;
  aspect-ratio: 1;
  max-height: 75vh;
  background: #1a1a1a;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.lightbox-img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.lightbox-img[hidden] {
  display: none;
}

.lightbox-empty {
  text-align: center;
  padding: 2rem;
}

.lightbox-empty-code {
  display: block;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 300;
  color: #333;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.lightbox-empty p {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: #555;
}

.lightbox-prev,
.lightbox-next {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: var(--white);
  font-size: 2rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
}

.lightbox-prev:disabled,
.lightbox-next:disabled {
  opacity: 0.2;
  cursor: default;
  pointer-events: none;
}

.lightbox-counter {
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: rgba(255, 255, 255, 0.45);
  min-height: 1em;
}

@media (max-width: 820px) {
  .lightbox-prev,
  .lightbox-next {
    width: 36px;
    height: 36px;
    font-size: 1.5rem;
  }

  .lightbox-nav {
    gap: 0.75rem;
  }
}