/* ============================================================
   SPF Soluções — Design System para Landing Pages
   Versão: 1.0 | Stack: Tailwind CSS + CSS Custom Properties
   ============================================================ */

/* ----------------------------------------------------------
   1. DESIGN TOKENS (CSS Custom Properties)
   ---------------------------------------------------------- */
:root {
  /* ── Colors ── */
  --color-primary:        #0F3B5C;
  --color-primary-light:  #1A5F8A;
  --color-primary-dark:   #0A2A40;
  --color-accent:         #10B981;   /* WhatsApp green */
  --color-accent-hover:   #059669;
  --color-accent-warm:    #F59E0B;   /* Amber highlights */
  --color-bg:             #F8FAFC;
  --color-surface:        #FFFFFF;
  --color-foreground:     #0F172A;
  --color-muted:          #64748B;
  --color-muted-light:    #94A3B8;
  --color-border:         #E2E8F0;
  --color-border-light:   #F1F5F9;
  --color-error:          #DC2626;
  --color-success:        #10B981;

  /* ── Typography ── */
  --font-sans:     'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-size-hero:    clamp(2rem, 5vw, 3.5rem);
  --font-size-h1:      clamp(1.75rem, 4vw, 2.5rem);
  --font-size-h2:      clamp(1.35rem, 3vw, 2rem);
  --font-size-h3:      clamp(1.1rem, 2vw, 1.5rem);
  --font-size-body:    1rem;
  --font-size-sm:      0.875rem;
  --font-size-xs:      0.75rem;
  --line-height-tight:  1.15;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  /* ── Spacing ── */
  --spacing-section: clamp(3rem, 8vw, 6rem);
  --spacing-card:    1.5rem;
  --spacing-gap:     1rem;

  /* ── Effects ── */
  --radius-sm:    0.5rem;
  --radius-md:    0.75rem;
  --radius-lg:    1rem;
  --radius-xl:    1.25rem;
  --shadow-card:  0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-card-hover: 0 10px 25px rgba(15, 23, 42, 0.08), 0 4px 10px rgba(15, 23, 42, 0.05);
  --shadow-cta:   0 4px 14px rgba(16, 185, 129, 0.35);
  --shadow-cta-hover: 0 6px 20px rgba(16, 185, 129, 0.45);
  --transition-fast: 150ms ease-out;
  --transition-base: 200ms ease-out;
  --transition-slow: 400ms ease-out;

  /* ── Layout ── */
  --max-width-content: 72rem;   /* max-w-6xl */
  --max-width-hero:    56rem;    /* max-w-3xl */
}

/* ----------------------------------------------------------
   2. BASE STYLES
   ---------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-body);
  line-height: var(--line-height-normal);
  color: var(--color-foreground);
  background-color: var(--color-bg);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Selection color */
::selection {
  background-color: rgba(15, 59, 92, 0.15);
  color: var(--color-primary);
}

/* Focus ring */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ----------------------------------------------------------
   3. TYPOGRAPHY UTILITIES
   ---------------------------------------------------------- */
.heading-hero {
  font-family: var(--font-sans);
  font-size: var(--font-size-hero);
  font-weight: 800;
  line-height: var(--line-height-tight);
  letter-spacing: -0.02em;
  color: var(--color-primary-dark);
}

.heading-section {
  font-family: var(--font-sans);
  font-size: var(--font-size-h2);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--color-foreground);
}

.heading-card {
  font-family: var(--font-sans);
  font-size: var(--font-size-h3);
  font-weight: 600;
  line-height: 1.25;
}

/* ----------------------------------------------------------
   4. COMPONENT: Buttons
   ---------------------------------------------------------- */
.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  background-color: var(--color-accent);
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.0625rem;
  padding: 0.875rem 2rem;
  border: none;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-cta);
  cursor: pointer;
  text-decoration: none;
  transition:
    background-color var(--transition-fast),
    transform var(--transition-fast),
    box-shadow var(--transition-fast);
  white-space: nowrap;
}

.btn-whatsapp:hover {
  background-color: var(--color-accent-hover);
  transform: scale(1.02);
  box-shadow: var(--shadow-cta-hover);
  color: #FFFFFF;
  text-decoration: none;
}

.btn-whatsapp:active {
  transform: scale(0.98);
}

.btn-whatsapp--large {
  padding: 1.125rem 2.5rem;
  font-size: 1.1875rem;
  border-radius: var(--radius-xl);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: transparent;
  color: var(--color-primary);
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.75rem 1.5rem;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.btn-outline:hover {
  background-color: var(--color-primary);
  color: #FFFFFF;
}

/* ----------------------------------------------------------
   5. COMPONENT: Cards
   ---------------------------------------------------------- */
.card-service {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--spacing-card);
  box-shadow: var(--shadow-card);
  transition:
    transform var(--transition-base),
    box-shadow var(--transition-base);
}

.card-service:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

/* ----------------------------------------------------------
   6. COMPONENT: Navbar
   ---------------------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  transition: background-color var(--transition-base);
}

.navbar--scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
}

/* ----------------------------------------------------------
   7. COMPONENT: Section
   ---------------------------------------------------------- */
.section {
  padding-top: var(--spacing-section);
  padding-bottom: var(--spacing-section);
}

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

.section--primary {
  background-color: var(--color-primary);
  color: #FFFFFF;
}

/* ----------------------------------------------------------
   8. COMPONENT: Badge / Tag
   ---------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  padding: 0.375rem 0.875rem;
  border-radius: 9999px;
  white-space: nowrap;
}

.badge--primary {
  background-color: rgba(15, 59, 92, 0.08);
  color: var(--color-primary);
}

.badge--success {
  background-color: rgba(16, 185, 129, 0.1);
  color: #065f46;
}

.badge--warm {
  background-color: rgba(245, 158, 11, 0.1);
  color: #92400e;
}

/* ----------------------------------------------------------
   9. ANIMATIONS
   ---------------------------------------------------------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse-ring {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
  }
  70% {
    box-shadow: 0 0 0 12px rgba(16, 185, 129, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

@keyframes countUp {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--transition-slow),
    transform var(--transition-slow);
}

.animate-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.animate-pulse-ring {
  animation: pulse-ring 2.5s ease-out infinite;
}

/* ----------------------------------------------------------
   10. 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;
  }

  .animate-reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ----------------------------------------------------------
   11. RESPONSIVE UTILITIES
   ---------------------------------------------------------- */
.container-content {
  width: 100%;
  max-width: var(--max-width-content);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

@media (min-width: 768px) {
  .container-content {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

@media (min-width: 1024px) {
  .container-content {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
}

/* ----------------------------------------------------------
   12. HELPER: visually hidden (screen-reader only)
   ---------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}