/* =============================================
   MAIN.CSS — v1.0.0
   ServiHogar - Design Tokens & Global Styles
   ============================================= */

/* ── Google Fonts ───────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@400;600;700;800&display=swap');

/* ── Design Tokens ──────────────────────────── */
:root {
  /* Colors - Vibrant Yellow/Black Theme */
  --color-primary:       #FFC107;
  --color-primary-dark:  #FFB300;
  --color-primary-light: #FFD54F;
  --color-accent:        #FF6584;
  --color-accent-dark:   #e54d6b;
  --color-teal:          #4fc3f7;

  /* Backgrounds */
  --bg-base:       #0A0A0A;
  --bg-surface:    #161616;
  --bg-elevated:   #242424;
  --bg-card:       rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);

  /* Glass */
  --glass-bg:     rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.10);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --glass-blur:   blur(20px);

  /* Text */
  --text-primary:   #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.70);
  --text-muted:     rgba(255, 255, 255, 0.45);
  --text-inverse:   #0A0A0A;

  /* Service category colors */
  --clr-gasfiter:      #4fc3f7;
  --clr-electricista:  #FFD54F;
  --clr-carpintero:    #BCAAA4;
  --clr-pintor:        #A5D6A7;
  --clr-jardinero:     #66BB6A;
  --clr-cerrajero:     #90A4AE;

  /* Spacing scale */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Border radius */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --radius-xl:   28px;
  --radius-full: 9999px;

  /* Typography */
  --font-sans:    'Inter', system-ui, sans-serif;
  --font-display: 'Outfit', 'Inter', sans-serif;

  /* Font sizes (fluid) */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-lg:   1.125rem;
  --text-xl:   1.25rem;
  --text-2xl:  1.5rem;
  --text-3xl:  1.875rem;
  --text-4xl:  2.25rem;
  --text-5xl:  3rem;
  --text-6xl:  3.75rem;
  --text-7xl:  4.5rem;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.5);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.6);
  --shadow-lg:  0 12px 40px rgba(0,0,0,0.7);
  --shadow-xl:  0 24px 64px rgba(0,0,0,0.8);
  --shadow-glow: 0 0 30px rgba(255, 193, 7, 0.25);

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow:   500ms ease;

  /* Layout */
  --container-max: 1280px;
  --navbar-h:       70px;
}

/* ── Reset & Base ───────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-base);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
}

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

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

ul, ol { list-style: none; }

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

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ── Container ──────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

@media (max-width: 768px) {
  .container { padding: 0 var(--space-lg); }
}
@media (max-width: 480px) {
  .container { padding: 0 var(--space-md); }
}

/* ── Section base ───────────────────────────── */
.section {
  padding: var(--space-4xl) 0;
}
.section-sm {
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}
.section-tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-inverse);
  background: var(--color-primary);
  border: none;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-md);
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: var(--space-md);
}
.section-title .highlight {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ── Navbar ─────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--navbar-h);
  z-index: 1000;
  background: rgba(10, 10, 10, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}
#navbar.scrolled {
  background: rgba(10, 10, 10, 0.98);
  box-shadow: 0 4px 30px rgba(0,0,0,0.8);
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
}
.navbar-logo .logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.navbar-logo .logo-text {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}
.navbar-menu a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  padding-bottom: 2px;
}
.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--color-primary);
  border-radius: 2px;
  transition: width var(--transition-normal);
}
.navbar-menu a:hover,
.navbar-menu a.active {
  color: var(--text-primary);
}
.navbar-menu a:hover::after,
.navbar-menu a.active::after {
  width: 100%;
}

.navbar-actions {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
}
.hamburger span {
  width: 24px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--navbar-h); left: 0; right: 0;
  background: rgba(13,13,26,0.98);
  backdrop-filter: blur(20px);
  padding: var(--space-xl);
  border-bottom: 1px solid var(--glass-border);
  z-index: 999;
  flex-direction: column;
  gap: var(--space-md);
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--glass-border);
  transition: color var(--transition-fast);
}
.mobile-menu a:hover { color: var(--color-primary); }
.mobile-menu .btn { width: 100%; text-align: center; margin-top: var(--space-sm); }

/* ── Footer ─────────────────────────────────── */
#footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-4xl) 0 var(--space-xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-brand .brand-desc {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: 1.8;
  margin: var(--space-md) 0 var(--space-lg);
}
.footer-social {
  display: flex;
  gap: var(--space-sm);
}
.social-link {
  width: 38px; height: 38px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
  transition: background var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}
.social-link:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}
.footer-col h4 {
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.footer-links a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}
.footer-links a:hover {
  color: var(--color-primary);
  padding-left: 4px;
}
.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.footer-bottom p {
  font-size: var(--text-sm);
  color: var(--text-muted);
}
.footer-version {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-family: monospace;
}

/* ── Back to top ───────────────────────────── */
#backToTop {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  z-index: 900;
  box-shadow: var(--shadow-glow);
}
#backToTop.visible {
  opacity: 1;
  pointer-events: all;
  transform: translateY(0);
}
#backToTop:hover { transform: translateY(-3px); }

/* ── Scrollbar ──────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-base); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--color-primary), var(--color-accent));
  border-radius: 3px;
}

/* ── Selection ──────────────────────────────── */
::selection {
  background: rgba(108,99,255,0.35);
  color: var(--text-primary);
}

/* ── Utility ────────────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.text-center { text-align: center; }
.text-gradient {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.mt-auto { margin-top: auto; }
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
  margin: var(--space-2xl) 0;
}

/* ── Page header (inner pages) ──────────────── */
.page-hero {
  padding: calc(var(--navbar-h) + var(--space-4xl)) 0 var(--space-4xl);
  background: radial-gradient(ellipse at top, rgba(108,99,255,0.15) 0%, transparent 60%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-hero-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 6vw, var(--text-6xl));
  font-weight: 800;
  margin-bottom: var(--space-md);
}
.page-hero-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 550px;
  margin: 0 auto;
}

/* ── Breadcrumb ─────────────────────────────── */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  justify-content: center;
}
.breadcrumb a { color: var(--color-primary); }
.breadcrumb span { color: var(--text-muted); }

/* ── Progress bar ───────────────────────────── */
#progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 1001;
  width: 0%;
  transition: width 0.1s linear;
}

/* ── Responsive typography ──────────────────── */
@media (max-width: 768px) {
  .section       { padding: var(--space-3xl) 0; }
  .section-sm    { padding: var(--space-2xl) 0; }

  #navbar .navbar-menu  { display: none; }
  #navbar .navbar-actions .btn:not(.btn-sm) { display: none; }
  .hamburger { display: flex; }

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

  #backToTop { bottom: var(--space-lg); right: var(--space-lg); }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}