/* ==================== CSS Variables ==================== */
:root {
  /* Medical Color Palette - Red Theme */
  --primary-color: #b00000;
  --primary-light: #c23233;
  --primary-dark: #8b0000;
  --secondary-color: #c23233;
  --secondary-light: #d64545;
  --accent-color: #b00000;

  /* Neutral Colors */
  --dark: #333333;
  --dark-light: #4a4a4a;
  --gray: #666666;
  --gray-light: #999999;
  --white: #ffffff;
  --background: #f5f5f5;
  --background-alt: #ffffff;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #b00000 0%, #c23233 100%);
  --gradient-hero: linear-gradient(
    135deg,
    rgba(176, 0, 0, 0.95) 0%,
    rgba(194, 50, 51, 0.95) 100%
  );
  --gradient-card: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.1) 0%,
    rgba(255, 255, 255, 0.05) 100%
  );

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.2);

  /* Spacing - Mobile First */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== Reset & Base (Mobile First) ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 14px; /* Base móvil */
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  color: var(--dark);
  background-color: var(--background);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ==================== Container (Mobile First) ==================== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* ==================== Navigation (Mobile First) ==================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  min-height: 60px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1rem;
  color: var(--primary-color);
}

.logo-icon {
  width: 20px;
  height: 20px;
  stroke: var(--primary-color);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

/* Hide menu on mobile by default */
.nav-menu {
  display: none;
}

.btn-nav {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

/* ==================== Buttons (Mobile First) ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  white-space: nowrap;
  text-align: center;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

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

.btn-secondary {
  background: var(--white);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-large {
  padding: 0.875rem 1.5rem;
  font-size: 1rem;
  width: 100%; /* Full width en móvil */
}

.btn-whatsapp {
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  color: var(--white);
  padding: 1rem 1.5rem;
  font-size: 1rem;
  box-shadow: var(--shadow-lg);
  width: 100%;
}

.btn-whatsapp:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-xl);
}

.whatsapp-icon {
  width: 20px;
  height: 20px;
}

/* ==================== Hero Section (Mobile First) ==================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 0 2rem;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-hero);
  opacity: 0.03;
  z-index: -1;
}

.hero-background::before {
  content: "";
  position: absolute;
  top: -25%;
  right: -25%;
  width: 300px;
  height: 300px;
  background: radial-gradient(
    circle,
    rgba(176, 0, 0, 0.1) 0%,
    transparent 70%
  );
  border-radius: 50%;
}

.hero-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  text-align: center;
}

.hero-content {
  animation: fadeInUp 0.8s ease-out;
  order: 1;
}

.hero-image {
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
  order: 2;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(176, 0, 0, 0.1);
  border-radius: var(--radius-full);
  color: var(--primary-color);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero-badge i {
  width: 14px;
  height: 14px;
  stroke: var(--primary-color);
}

.hero-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 0.75rem;
}

.hero-description {
  font-size: 0.95rem;
  color: var(--gray);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
}

/* Hero Card */
.hero-card {
  position: relative;
  background: transparent;
  border-radius: 50%;
  padding: 0;
  max-width: 350px;
  margin: 0 auto;
  aspect-ratio: 1 / 1;
}

.card-glow {
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(194, 50, 51, 0.15) 0%,
    transparent 70%
  );
  animation: rotate 20s linear infinite;
  pointer-events: none;
}

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.doctor-image {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 350px;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  object-fit: cover;
  object-position: center center;
  display: block;
  margin: 0 auto;
  box-shadow: 0 8px 32px rgba(176, 0, 0, 0.2);
  border: 4px solid rgba(255, 255, 255, 0.9);
}

/* ==================== Section Headers (Mobile First) ==================== */
.section-header {
  text-align: center;
  margin-bottom: 2rem;
}

.section-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(176, 0, 0, 0.1);
  border-radius: var(--radius-full);
  color: var(--primary-color);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--dark);
}

.section-description {
  font-size: 0.95rem;
  color: var(--gray);
  max-width: 600px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* ==================== Especialidades Section (Mobile First) ==================== */
.especialidades {
  padding: 2.5rem 0;
}

.especialidades-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.especialidad-card {
  background: var(--white);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 2px solid transparent;
}

.especialidad-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-light);
}

.especialidad-icon {
  margin-bottom: 1rem;
}

.especialidad-icon i {
  width: 40px;
  height: 40px;
  stroke: var(--primary-color);
}

.especialidad-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--primary-dark);
}

.especialidad-card > p {
  color: var(--gray);
  margin-bottom: 1rem;
  line-height: 1.6;
  font-size: 0.9rem;
}

.especialidad-list {
  list-style: none;
}

.especialidad-list li {
  padding: 0.4rem 0;
  color: var(--dark);
  position: relative;
  padding-left: 1.25rem;
  font-size: 0.9rem;
}

.especialidad-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--secondary-color);
  font-weight: 700;
}

/* ==================== Obras Sociales Section (Mobile First) ==================== */
.obras-sociales {
  padding: 2.5rem 0;
  background: var(--background-alt);
}

.obras-sociales-container {
  max-width: 900px;
  margin: 0 auto;
}

.obras-sociales-card {
  background: var(--white);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.obras-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.obra-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem;
  background: var(--background);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  font-weight: 500;
  font-size: 0.9rem;
}

.obra-item:hover {
  background: rgba(176, 0, 0, 0.05);
  transform: translateX(5px);
}

.obra-check {
  width: 18px;
  height: 18px;
  stroke: var(--secondary-color);
  flex-shrink: 0;
}

.obras-note {
  padding: 1rem;
  background: rgba(194, 50, 51, 0.05);
  border-left: 4px solid var(--secondary-color);
  border-radius: var(--radius-sm);
  margin-top: 1rem;
}

.obras-note p {
  color: var(--dark);
  font-weight: 500;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.85rem;
  line-height: 1.5;
}

.obras-note p i {
  width: 18px;
  height: 18px;
  stroke: var(--secondary-color);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ==================== Contacto Section (Mobile First) ==================== */
.contacto {
  padding: 2.5rem 0;
}

.contacto-card {
  background: var(--gradient-primary);
  padding: 2rem 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.contacto-card::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -30%;
  width: 250px;
  height: 250px;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 0.1) 0%,
    transparent 70%
  );
  border-radius: 50%;
}

.contacto-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--white);
}

.contacto-content .section-badge {
  background: rgba(255, 255, 255, 0.2);
  color: var(--white);
}

.contacto-content h2 {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.contacto-content > p {
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  opacity: 0.95;
  line-height: 1.6;
}

.contacto-info {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-top: 1.5rem;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  text-align: left;
}

.info-icon {
  width: 24px;
  height: 24px;
  stroke: white;
  flex-shrink: 0;
  margin-top: 2px;
}

.info-item strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.info-item p {
  opacity: 0.9;
  font-size: 0.85rem;
}

/* ==================== Footer (Mobile First) ==================== */
.footer {
  background: var(--dark);
  color: var(--white);
  padding: 2rem 0 1.5rem;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.footer-brand p {
  color: var(--gray-light);
  margin-top: 0.5rem;
  font-size: 0.9rem;
}

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

.footer-col h4 {
  margin-bottom: 0.75rem;
  color: var(--secondary-light);
  font-size: 1rem;
}

.footer-col ul li {
  margin-bottom: 0.5rem;
  color: var(--gray-light);
  font-size: 0.85rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--gray-light);
  font-size: 0.85rem;
}

/* ==================== TABLET (min-width: 640px) ==================== */
@media (min-width: 640px) {
  html {
    font-size: 15px;
  }

  .container {
    padding: 0 1.5rem;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .section-title {
    font-size: 2rem;
  }

  .btn-large {
    width: auto;
    padding: 1rem 2rem;
  }

  .btn-whatsapp {
    width: auto;
    padding: 1.25rem 2rem;
    font-size: 1.1rem;
  }

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

  .obras-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-cta {
    flex-direction: row;
    justify-content: center;
  }

  .contacto-info {
    flex-direction: row;
    justify-content: center;
    gap: 2rem;
  }
}

/* ==================== DESKTOP (min-width: 968px) ==================== */
@media (min-width: 968px) {
  html {
    font-size: 16px;
  }

  .container {
    padding: 0 2rem;
  }

  :root {
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
  }

  /* Show desktop navigation */
  .nav-menu {
    display: flex;
    gap: 2rem;
    align-items: center;
  }

  .nav-link {
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    font-size: 0.95rem;
  }

  .nav-link::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
  }

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

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

  .nav-container {
    padding: 1rem 2rem;
  }

  .logo {
    font-size: 1.25rem;
  }

  .logo-icon {
    width: 24px;
    height: 24px;
  }

  /* Hero desktop layout */
  .hero {
    min-height: 100vh;
    padding-top: 80px;
  }

  .hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    text-align: left;
  }

  .hero-content {
    order: 0;
  }

  .hero-image {
    order: 0;
  }

  .hero-background::before {
    width: 800px;
    height: 800px;
    top: -50%;
    right: -20%;
  }

  .hero-badge {
    font-size: 0.9rem;
    padding: 0.5rem 1.5rem;
  }

  .hero-badge i {
    width: 16px;
    height: 16px;
  }

  .hero-title {
    font-size: 3.5rem;
  }

  .hero-subtitle {
    font-size: 1.5rem;
  }

  .hero-description {
    font-size: 1.1rem;
  }

  .hero-cta {
    flex-direction: row;
    justify-content: flex-start;
  }

  .hero-card {
    max-width: 100%;
  }

  /* Sections */
  .especialidades {
    padding: var(--spacing-xl) 0;
  }

  .section-header {
    margin-bottom: var(--spacing-lg);
  }

  .section-title {
    font-size: 2.5rem;
  }

  .section-description {
    font-size: 1.1rem;
  }

  .especialidades-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
  }

  .especialidad-icon i {
    width: 48px;
    height: 48px;
  }

  .especialidad-card h3 {
    font-size: 1.5rem;
  }

  .especialidad-card > p {
    font-size: 1rem;
  }

  .especialidad-list li {
    font-size: 0.95rem;
  }

  /* Obras Sociales */
  .obras-sociales {
    padding: var(--spacing-xl) 0;
  }

  .obras-sociales-card {
    padding: var(--spacing-lg);
  }

  .obras-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
  }

  .obra-item {
    font-size: 1rem;
    padding: 1rem;
  }

  .obra-check {
    width: 20px;
    height: 20px;
  }

  .obras-note {
    padding: 1.5rem;
  }

  .obras-note p {
    font-size: 0.95rem;
  }

  .obras-note p i {
    width: 20px;
    height: 20px;
  }

  /* Contacto */
  .contacto {
    padding: var(--spacing-xl) 0;
  }

  .contacto-card {
    padding: var(--spacing-lg);
  }

  .contacto-card::before {
    width: 500px;
    height: 500px;
    top: -50%;
    right: -20%;
  }

  .contacto-content h2 {
    font-size: 2.5rem;
  }

  .contacto-content > p {
    font-size: 1.1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }

  .info-icon {
    width: 32px;
    height: 32px;
  }

  .info-item strong {
    font-size: 1.1rem;
  }

  .info-item p {
    font-size: 0.95rem;
  }

  /* Footer */
  .footer {
    padding: var(--spacing-lg) 0 var(--spacing-md);
  }

  .footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    text-align: left;
  }

  .footer-links {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-lg);
    justify-content: flex-end;
  }

  .footer-col h4 {
    font-size: 1rem;
  }

  .footer-col ul li {
    font-size: 0.9rem;
  }

  .footer-bottom {
    font-size: 0.9rem;
  }
}

/* ==================== LARGE DESKTOP (min-width: 1200px) ==================== */
@media (min-width: 1200px) {
  .hero-title {
    font-size: 4rem;
  }

  .especialidad-icon i {
    width: 56px;
    height: 56px;
  }
}

/* ==================== Scroll to Top Button ==================== */
.scroll-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
}

.scroll-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-to-top:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: var(--shadow-xl);
}

.scroll-to-top:active {
  transform: translateY(-2px) scale(1.05);
}

.scroll-to-top i {
  width: 24px;
  height: 24px;
  stroke: var(--white);
  stroke-width: 2.5;
}

@media (min-width: 640px) {
  .scroll-to-top {
    width: 55px;
    height: 55px;
    bottom: 30px;
    right: 30px;
  }
  
  .scroll-to-top i {
    width: 26px;
    height: 26px;
  }
}

@media (min-width: 968px) {
  .scroll-to-top {
    width: 60px;
    height: 60px;
  }
  
  .scroll-to-top i {
    width: 28px;
    height: 28px;
  }
}