/* ========================================
   RITMIA SUPPORT - GLOBAL STYLES
   ======================================== */

/* CSS Variables - Design System */
:root {
  /* Colors - Light Mode */
  --bg-primary: #ffffff;
  --bg-secondary: #f9fafb;
  --bg-tertiary: #f3f4f6;
  --fg-primary: #111827;
  --fg-secondary: #4b5563;
  --fg-tertiary: #6b7280;
  --accent: #7c3aed;
  --accent-hover: #6d28d9;
  --accent-light: #ede9fe;
  --border: #e5e7eb;
  --shadow: rgba(0, 0, 0, 0.1);
  --shadow-strong: rgba(0, 0, 0, 0.15);

  /* Status colors */
  --status-success: #10b981;
  --status-warning: #f59e0b;
  --status-error: #ef4444;

  /* Typography */
  --font-system: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Helvetica Neue', sans-serif;
  --font-mono: ui-monospace, 'SF Mono', 'Cascadia Code', 'Source Code Pro', Menlo, Consolas, 'DejaVu Sans Mono', monospace;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #111827;
    --bg-secondary: #1f2937;
    --bg-tertiary: #374151;
    --fg-primary: #f9fafb;
    --fg-secondary: #d1d5db;
    --fg-tertiary: #9ca3af;
    --accent: #8b5cf6;
    --accent-hover: #a78bfa;
    --accent-light: #2e1065;
    --border: #374151;
    --shadow: rgba(0, 0, 0, 0.3);
    --shadow-strong: rgba(0, 0, 0, 0.5);
  }
}

/* ========================================
   RESET & BASE STYLES
   ======================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-system);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--fg-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--fg-primary);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-md);
}

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

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

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

ul, ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--spacing-lg);
  padding-right: var(--spacing-lg);
}

@media (max-width: 768px) {
  .container {
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }
}

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

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: var(--spacing-md) 0;
}

@media (prefers-color-scheme: dark) {
  .header {
    background-color: rgba(17, 24, 39, 0.8);
  }
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: var(--fg-primary);
  font-weight: 700;
  font-size: 1.25rem;
}

.logo-link:hover {
  text-decoration: none;
  opacity: 0.8;
}

.logo-img {
  width: 32px;
  height: 32px;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  margin: 0;
}

.nav-link {
  color: var(--fg-secondary);
  font-weight: 500;
  font-size: 0.9375rem;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.nav-link:hover {
  background-color: var(--bg-tertiary);
  color: var(--fg-primary);
  text-decoration: none;
}

.nav-link[aria-current="page"] {
  color: var(--accent);
  font-weight: 600;
}

@media (max-width: 768px) {
  .header-content {
    flex-wrap: wrap;
  }

  .nav-list {
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .nav-link {
    font-size: 0.875rem;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
}

/* ========================================
   BUTTONS
   ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
  border: 2px solid transparent;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

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

.btn-primary:hover {
  background-color: var(--accent-hover);
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--shadow);
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--fg-primary);
}

.btn-secondary:hover {
  background-color: var(--bg-secondary);
  text-decoration: none;
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background-color: var(--bg-secondary);
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.btn-lg {
  min-height: 52px;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1.0625rem;
}

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

.hero {
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--bg-secondary) 100%);
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  color: var(--fg-primary);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--fg-secondary);
  margin-bottom: var(--spacing-xl);
}

.badges {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.badge {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 600;
  background-color: var(--bg-tertiary);
  color: var(--fg-primary);
}

.badge-version {
  background-color: var(--accent-light);
  color: var(--accent);
}

.badge-status[data-status="operando"] {
  background-color: #d1fae5;
  color: var(--status-success);
}

@media (prefers-color-scheme: dark) {
  .badge-status[data-status="operando"] {
    background-color: #065f46;
    color: #6ee7b7;
  }
}

.badge-status[data-status="degradado"] {
  background-color: #fef3c7;
  color: var(--status-warning);
}

@media (prefers-color-scheme: dark) {
  .badge-status[data-status="degradado"] {
    background-color: #78350f;
    color: #fcd34d;
  }
}

.badge-status[data-status="mantenimiento"] {
  background-color: #fee2e2;
  color: var(--status-error);
}

@media (prefers-color-scheme: dark) {
  .badge-status[data-status="mantenimiento"] {
    background-color: #7f1d1d;
    color: #fca5a5;
  }
}

.hero-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .hero {
    padding: var(--spacing-2xl) 0;
  }

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

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta .btn {
    width: 100%;
  }
}

/* ========================================
   SECTIONS
   ======================================== */

.faq-section,
.contact-section,
.legal-section {
  padding: var(--spacing-3xl) 0;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-xl);
  font-size: 2rem;
}

/* ========================================
   FAQ
   ======================================== */

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: var(--spacing-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--bg-primary);
}

.faq-question {
  margin: 0;
}

.faq-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  text-align: left;
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--fg-primary);
  background-color: var(--bg-secondary);
  cursor: pointer;
  transition: background-color var(--transition-fast);
  min-height: 60px;
}

.faq-toggle:hover {
  background-color: var(--bg-tertiary);
}

.faq-toggle:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.faq-icon {
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--fg-secondary);
}

.faq-toggle[aria-expanded="true"] .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 var(--spacing-lg);
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height var(--transition-base), opacity var(--transition-base), padding var(--transition-base);
}

.faq-answer:not([hidden]) {
  max-height: 500px;
  opacity: 1;
  padding: var(--spacing-lg);
  padding-top: 0;
}

.faq-answer p {
  margin-bottom: 0;
  color: var(--fg-secondary);
  line-height: 1.7;
}

/* ========================================
   CONTACT
   ======================================== */

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

.contact-intro {
  text-align: center;
  color: var(--fg-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
}

.contact-email {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.email-link {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  display: inline-block;
  transition: background-color var(--transition-fast);
}

.email-link:hover {
  background-color: var(--accent-light);
  text-decoration: none;
}

/* Contact Form (optional) */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--fg-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  font-size: 1rem;
  font-family: inherit;
  color: var(--fg-primary);
  background-color: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-status {
  margin-top: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 600;
}

/* ========================================
   LEGAL SECTION
   ======================================== */

.legal-intro {
  text-align: center;
  color: var(--fg-secondary);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
}

.legal-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* ========================================
   LEGAL PAGE
   ======================================== */

.legal-page {
  padding: var(--spacing-3xl) 0;
  max-width: 900px;
  margin: 0 auto;
}

.legal-page h1 {
  margin-bottom: var(--spacing-md);
}

.legal-meta {
  color: var(--fg-tertiary);
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-2xl);
}

.legal-toc {
  background-color: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-2xl);
}

.legal-toc h2 {
  font-size: 1.125rem;
  margin-bottom: var(--spacing-md);
}

.legal-toc ul {
  list-style: none;
  margin: 0;
}

.legal-toc li {
  margin-bottom: var(--spacing-sm);
}

.legal-toc a {
  color: var(--fg-secondary);
  transition: color var(--transition-fast);
}

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

.legal-page section {
  margin-bottom: var(--spacing-2xl);
}

.legal-page section h2 {
  margin-bottom: var(--spacing-md);
  padding-top: var(--spacing-md);
  border-top: 1px solid var(--border);
}

.legal-page section:first-of-type h2 {
  border-top: none;
}

.legal-page ul {
  margin-left: var(--spacing-xl);
}

.legal-page hr {
  border: none;
  border-top: 2px solid var(--border);
  margin: var(--spacing-2xl) 0;
}

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

.footer {
  background-color: var(--bg-secondary);
  padding: var(--spacing-xl) 0;
  border-top: 1px solid var(--border);
}

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

.footer-copy {
  color: var(--fg-tertiary);
  font-size: 0.9375rem;
  margin: 0;
}

.footer-nav {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  margin: 0;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--fg-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--accent);
  text-decoration: none;
}

@media (max-width: 768px) {
  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-nav {
    justify-content: center;
  }
}

/* ========================================
   404 PAGE
   ======================================== */

.error-page {
  padding: var(--spacing-3xl) 0;
  text-align: center;
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.error-content h1 {
  font-size: 4rem;
  color: var(--accent);
  margin-bottom: var(--spacing-md);
}

.error-content p {
  font-size: 1.25rem;
  color: var(--fg-secondary);
  margin-bottom: var(--spacing-xl);
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

/* Skip to main content */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--accent);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  text-decoration: none;
  z-index: 10000;
}

.skip-link:focus {
  top: 0;
}

/* Focus visible - ensure all interactive elements have clear focus */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}