/* =============================================
   Estudio Contable Andrés Ledesma — Estilos
   ============================================= */

:root {
  --color-primary: #1a3a5c;
  --color-primary-dark: #0f2540;
  --color-primary-light: #2a5a8c;
  --color-accent: #c9a227;
  --color-accent-light: #e8c84a;
  --color-bg: #ffffff;
  --color-bg-alt: #f7f9fc;
  --color-text: #2d3748;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(26, 58, 92, 0.1);
  --shadow-lg: 0 8px 32px rgba(26, 58, 92, 0.15);
  --radius: 8px;
  --radius-lg: 16px;
  --transition: 0.25s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

a {
  color: var(--color-primary-light);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent);
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Header / Nav ---- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-primary);
  font-weight: 600;
}

.nav__logo:hover {
  color: var(--color-primary);
}

.nav__logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius);
  letter-spacing: 0.05em;
}

.nav__logo-text {
  font-family: var(--font-heading);
  font-size: 1.15rem;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav__link {
  color: var(--color-text);
  font-size: 0.925rem;
  font-weight: 500;
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link--cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.nav__link--cta:hover {
  background: var(--color-primary-dark);
  color: #fff !important;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
}

.nav__toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- Hero ---- */

.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-top: 72px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
  z-index: 0;
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  padding: 4rem 0;
}

.hero__tag {
  display: inline-block;
  background: rgba(201, 162, 39, 0.2);
  color: var(--color-accent-light);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.4rem 1rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero__title em {
  font-style: normal;
  color: var(--color-accent-light);
}

.hero__subtitle {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2.5rem;
  max-width: 560px;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ---- Buttons ---- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-primary-dark);
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
  color: var(--color-primary-dark);
}

.btn--outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #fff;
  color: #fff;
}

.btn--full {
  width: 100%;
}

/* ---- Stats ---- */

.stats {
  background: var(--color-bg);
  margin-top: -3rem;
  position: relative;
  z-index: 2;
  padding-bottom: 2rem;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 2.5rem;
}

.stat {
  text-align: center;
}

.stat__number {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat__label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ---- Sections ---- */

.section {
  padding: 6rem 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--cta {
  background: var(--color-primary-dark);
  color: #fff;
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3.5rem;
}

.section__tag {
  display: inline-block;
  color: var(--color-accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.section--cta .section__title {
  color: #fff;
}

.section__desc {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.section--cta .section__tag {
  color: var(--color-accent-light);
}

/* ---- Services ---- */

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
}

.service-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.service-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: rgba(26, 58, 92, 0.08);
  color: var(--color-primary);
  border-radius: var(--radius);
  margin-bottom: 1.25rem;
}

.service-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.service-card__desc {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ---- Values ---- */

.values__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 2rem;
}

.value-card {
  position: relative;
  padding: 2rem;
  background: #fff;
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.value-card__number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: rgba(26, 58, 92, 0.1);
  line-height: 1;
  margin-bottom: 1rem;
}

.value-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.value-card__desc {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ---- About ---- */

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

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

.about__photo {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about__photo img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.about__text {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
  line-height: 1.8;
}

.about__list {
  list-style: none;
  margin-top: 1.5rem;
}

.about__list li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.75rem;
  color: var(--color-text);
  font-size: 0.95rem;
}

.about__list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.about__card {
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
}

.about__quote {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-style: italic;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.about__cite {
  font-size: 0.875rem;
  color: var(--color-accent-light);
  font-style: normal;
  font-weight: 500;
}

/* ---- Contact ---- */

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

.section--cta .section__desc,
.contact__desc {
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
}

.contact__details {
  list-style: none;
}

.contact__details li {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
}

.contact__details a {
  color: rgba(255, 255, 255, 0.9);
}

.contact__details a:hover {
  color: var(--color-accent-light);
}

.contact__details svg {
  flex-shrink: 0;
  color: var(--color-accent-light);
}

.contact__form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-lg);
}

.form__group {
  margin-bottom: 1.25rem;
}

.form__group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 0.4rem;
}

.form__group input,
.form__group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text);
  transition: border-color var(--transition);
  background: var(--color-bg-alt);
}

.form__group input:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--color-primary-light);
  background: #fff;
}

.form__group textarea {
  resize: vertical;
  min-height: 100px;
}

.form__privacy {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 1rem;
}

/* ---- Footer ---- */

.footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding-top: 3rem;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
}

.footer .nav__logo {
  color: #fff;
  margin-bottom: 0.75rem;
}

.footer__tagline {
  font-size: 0.875rem;
  max-width: 280px;
}

.footer__links h4 {
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer__links ul {
  list-style: none;
}

.footer__links li {
  margin-bottom: 0.5rem;
}

.footer__links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
}

.footer__links a:hover {
  color: var(--color-accent-light);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
}

/* ---- Privacy Page ---- */

.page-header {
  background: var(--color-primary-dark);
  color: #fff;
  padding: 8rem 0 3rem;
  text-align: center;
}

.page-header__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: 0.5rem;
}

.page-header__date {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
}

.legal-content {
  max-width: 760px;
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
}

.legal-content h2 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  color: var(--color-primary);
  margin: 2.5rem 0 1rem;
}

.legal-content h2:first-child {
  margin-top: 0;
}

.legal-content p,
.legal-content li {
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 1rem;
}

.legal-content ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-content a {
  color: var(--color-primary-light);
}

.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
}

.legal-back:hover {
  color: var(--color-accent);
}

/* ---- Responsive ---- */

@media (max-width: 900px) {
  .about,
  .contact {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

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

  .nav__menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 1.5rem;
    gap: 0;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition);
    pointer-events: none;
  }

  .nav__menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav__menu li {
    width: 100%;
  }

  .nav__link {
    display: block;
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav__link--cta {
    margin-top: 0.5rem;
    text-align: center;
  }

  .stats__grid {
    grid-template-columns: 1fr;
    padding: 2rem;
  }

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

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