/* ==========================================================================
   MARTA ÁLVAREZ GIL - marmarta.com
   Asesora de Dirección en Transformación IT
   
   COLORES: Cambia --color-accent para cambiar el color de acento de toda la web
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400&family=DM+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  /* ============================================
     COLORES - PARAMETRIZABLES
     Cambia estos valores para modificar toda la web
     ============================================ */
  --color-accent: #047857;           /* Esmeralda - color principal */
  --color-accent-light: #059669;     /* Esmeralda más claro para hovers */
  --color-accent-dark: #065F46;      /* Esmeralda oscuro */
  
  /* Escala de grises */
  --color-black: #0a0a0a;
  --color-gray-900: #171717;
  --color-gray-800: #262626;
  --color-gray-700: #404040;
  --color-gray-600: #525252;
  --color-gray-500: #737373;
  --color-gray-400: #a3a3a3;
  --color-gray-300: #d4d4d4;
  --color-gray-200: #e5e5e5;
  --color-gray-100: #f5f5f5;
  --color-white: #ffffff;
  
  /* Tipografía */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Espaciado */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;
  
  /* Otros */
  --max-width: 1200px;
  --header-height: 80px;
  --transition: 0.3s ease;
  --border-radius: 4px;
}

/* ==========================================================================
   RESET Y BASE
   ========================================================================== */

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

/* ==========================================================================
   TIPOGRAFÍA
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-black);
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 400;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 400;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 500;
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
}

p {
  margin-bottom: 1rem;
}

.lead {
  font-size: 1.25rem;
  color: var(--color-gray-600);
  line-height: 1.8;
}

.small {
  font-size: 0.875rem;
}

.accent-text {
  color: var(--color-accent);
}

/* ==========================================================================
   LAYOUT
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--space-3xl) 0;
}

.section--hero {
  padding: var(--space-4xl) 0;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
}

.section--gray {
  background-color: var(--color-gray-100);
}

.section--dark {
  background-color: var(--color-gray-900);
  color: var(--color-white);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-white);
}

.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid--2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

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

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-gray-200);
  z-index: 1000;
  transition: all var(--transition);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.header__logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--color-black);
  letter-spacing: 0.02em;
}

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

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav__link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-gray-700);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  padding: 0.5rem 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-accent);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__lang {
  display: flex;
  gap: 0.5rem;
  margin-left: var(--space-md);
  padding-left: var(--space-md);
  border-left: 1px solid var(--color-gray-300);
}

.nav__lang a {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-gray-500);
  text-transform: uppercase;
}

.nav__lang a:hover,
.nav__lang a.active {
  color: var(--color-accent);
}

/* Mobile menu */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

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

@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
    z-index: 1001;
  }
  
  .nav__toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav__toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .nav__toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }
  
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-xl);
    transition: right var(--transition);
  }
  
  .nav.active {
    right: 0;
  }
  
  .nav__link {
    font-size: 1.5rem;
  }
  
  .nav__lang {
    margin-left: 0;
    padding-left: 0;
    border-left: none;
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-gray-200);
  }
}

/* ==========================================================================
   BOTONES
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition);
}

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

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

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

.btn--outline:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

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

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

.btn--large {
  padding: 1.25rem 2.5rem;
  font-size: 1rem;
}

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

.hero {
  padding-top: calc(var(--header-height) + var(--space-3xl));
  padding-bottom: var(--space-3xl);
}

.hero__content {
  max-width: 800px;
}

.hero__tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
  position: relative;
  padding-left: 3rem;
}

.hero__tag::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 2rem;
  height: 2px;
  background: var(--color-accent);
}

.hero__title {
  margin-bottom: var(--space-lg);
}

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

.hero__subtitle {
  font-size: 1.35rem;
  color: var(--color-gray-600);
  margin-bottom: var(--space-xl);
  max-width: 600px;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* ==========================================================================
   SERVICIOS (Cards)
   ========================================================================== */

.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
  max-width: 900px;
  margin: 0 auto;
}

@media (max-width: 768px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

.service-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  padding: var(--space-xl);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.service-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card__icon {
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  color: var(--color-accent);
}

.service-card__title {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 500;
  margin-bottom: var(--space-sm);
}

.service-card__duration {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-sm);
}

.service-card__description {
  color: var(--color-gray-600);
  margin-bottom: var(--space-md);
}

.service-card__link {
  font-weight: 600;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.service-card__link svg {
  transition: transform var(--transition);
}

.service-card__link:hover svg {
  transform: translateX(4px);
}

/* Página de servicios - detalle */
.service-detail {
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid var(--color-gray-200);
}

.service-detail:last-child {
  border-bottom: none;
}

.service-detail__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.service-detail__title {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
}

.service-detail__meta {
  display: flex;
  gap: var(--space-md);
}

.service-detail__tag {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--color-gray-100);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-gray-700);
}

.service-detail__tag--accent {
  background: var(--color-accent);
  color: var(--color-white);
}

.service-detail__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .service-detail__content {
    grid-template-columns: 2fr 1fr;
  }
}

.service-detail__description {
  font-size: 1.1rem;
  color: var(--color-gray-600);
}

.service-detail__list {
  list-style: none;
}

.service-detail__list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--color-gray-700);
}

.service-detail__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6rem;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
}

.service-detail__sidebar {
  background: var(--color-gray-100);
  padding: var(--space-lg);
}

.service-detail__sidebar h4 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: var(--space-md);
}

/* ==========================================================================
   CREDENCIALES / STATS
   ========================================================================== */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  text-align: center;
}

.stat {
  padding: var(--space-lg);
}

.stat__number {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 4rem);
  font-weight: 400;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat__label {
  font-size: 0.9rem;
  color: var(--color-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

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

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.about__image {
  position: relative;
}

.about__image-placeholder {
  aspect-ratio: 4/5;
  background: var(--color-gray-200);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-500);
  font-size: 0.9rem;
}

.about__image img {
  width: 100%;
  height: auto;
  aspect-ratio: 4/5;
  object-fit: cover;
}

.about__image::after {
  content: '';
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  right: calc(var(--space-md) * -1);
  bottom: calc(var(--space-md) * -1);
  border: 2px solid var(--color-accent);
  z-index: -1;
}

.about__content h2 {
  margin-bottom: var(--space-md);
}

.about__content p {
  color: var(--color-gray-600);
  margin-bottom: var(--space-md);
}

.about__values {
  margin-top: var(--space-xl);
  display: grid;
  gap: var(--space-md);
}

.about__value {
  display: flex;
  gap: var(--space-md);
}

.about__value-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-accent);
}

.about__value h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.about__value p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

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

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

@media (min-width: 768px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contact__info h2 {
  margin-bottom: var(--space-md);
}

.contact__info > p {
  color: var(--color-gray-600);
  margin-bottom: var(--space-xl);
}

.contact__methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.contact__method {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--color-gray-100);
  transition: all var(--transition);
}

.contact__method:hover {
  background: var(--color-gray-200);
}

.contact__method-icon {
  width: 24px;
  height: 24px;
  color: var(--color-accent);
}

.contact__method-text {
  font-weight: 500;
  color: var(--color-gray-800);
}

/* Formulario */
.contact__form {
  background: var(--color-gray-100);
  padding: var(--space-xl);
}

.form__group {
  margin-bottom: var(--space-md);
}

.form__label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-gray-700);
  margin-bottom: 0.5rem;
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 1rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-gray-800);
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--border-radius);
  transition: border-color var(--transition);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form__textarea {
  min-height: 150px;
  resize: vertical;
}

.form__submit {
  width: 100%;
  margin-top: var(--space-sm);
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */

.cta {
  background: var(--color-gray-900);
  color: var(--color-white);
  text-align: center;
  padding: var(--space-3xl) var(--space-md);
}

.cta h2 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.cta p {
  color: var(--color-gray-400);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  font-size: 1.1rem;
}

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

.footer {
  background: var(--color-black);
  color: var(--color-gray-400);
  padding: var(--space-2xl) 0 var(--space-lg);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.footer__logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-white);
}

.footer__links {
  display: flex;
  gap: var(--space-md);
}

.footer__links a {
  color: var(--color-gray-400);
  font-size: 0.9rem;
}

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

.footer__copy {
  width: 100%;
  text-align: center;
  padding-top: var(--space-lg);
  margin-top: var(--space-lg);
  border-top: 1px solid var(--color-gray-800);
  font-size: 0.85rem;
}

/* ==========================================================================
   WHATSAPP FLOTANTE
   ========================================================================== */

.whatsapp-float {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  z-index: 999;
  transition: all var(--transition);
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
  fill: white;
}

/* ==========================================================================
   PAGE HEADER (interior pages)
   ========================================================================== */

.page-header {
  padding-top: calc(var(--header-height) + var(--space-2xl));
  padding-bottom: var(--space-2xl);
  background: var(--color-gray-100);
}

.page-header h1 {
  margin-bottom: var(--space-sm);
}

.page-header p {
  font-size: 1.25rem;
  color: var(--color-gray-600);
  max-width: 600px;
}

/* ==========================================================================
   UTILIDADES
   ========================================================================== */

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }

.pt-header {
  padding-top: var(--header-height);
}

/* ==========================================================================
   ANIMACIONES
   ========================================================================== */

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }

/* Initial state for animated elements */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

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

@media (max-width: 768px) {
  .hero {
    padding-top: calc(var(--header-height) + var(--space-xl));
    padding-bottom: var(--space-xl);
  }
  
  .section {
    padding: var(--space-2xl) 0;
  }
  
  .about__image::after {
    display: none;
  }
  
  .whatsapp-float {
    bottom: var(--space-md);
    right: var(--space-md);
    width: 54px;
    height: 54px;
  }
  
  .whatsapp-float svg {
    width: 28px;
    height: 28px;
  }
  
  .page-header {
    padding-top: calc(var(--header-height) + var(--space-xl));
    padding-bottom: var(--space-xl);
  }
}

/* ==========================================================================
   ESTILOS ADICIONALES
   ========================================================================== */

/* Firma en footer */
.footer__logo-img {
  height: 50px;
  width: auto;
  filter: brightness(0) invert(1);
  opacity: 0.9;
}

/* Checkbox de privacidad */
.form__checkbox-group {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: var(--space-md);
}

.form__checkbox-group input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--color-accent);
  cursor: pointer;
  flex-shrink: 0;
}

.form__checkbox-group label {
  font-size: 0.9rem;
  color: var(--color-gray-600);
  line-height: 1.5;
  cursor: pointer;
}

.form__checkbox-group a {
  color: var(--color-accent);
  text-decoration: underline;
}

/* Mensajes de formulario */
.form__message {
  padding: var(--space-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-md);
  font-size: 0.95rem;
}

.form__message--success {
  background-color: #d1fae5;
  color: #065f46;
  border: 1px solid #6ee7b7;
}

.form__message--error {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

/* Imagen de perfil */
.about__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}