/* 
 * SwipeSite Dedicated Design System
 * Modern, Professional, and Responsive
 */

:root {
  /* Colors */
  --navy: #1a365d;
  --blue: #0073D1;
  --green: #10A32F;
  --orange: #F59E0B;
  --slate: #64748b;
  --light: #f8fafc;
  --white: #ffffff;
  --border: rgba(0, 0, 0, 0.05);
  
  /* Fonts */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  
  /* Spacing */
  --section-padding: 8rem 2rem;
  --container-width: 1200px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--light);
  color: var(--navy);
  line-height: 1.5;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 1.1;
}

.gradient-text {
  background: linear-gradient(135deg, var(--blue), var(--green));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Layout */
.container {
  width: min(var(--container-width), 90%);
  margin: 0 auto;
}

section {
  padding: var(--section-padding);
}

/* Navigation */
nav {
  position: fixed;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: min(1000px, 92%);
  z-index: 1000;
  opacity: 1;
  visibility: visible;
}

.nav-blur {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(0, 0, 0, 0.08); /* Finer border */
  padding: 0.75rem 2rem;
  border-radius: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.nav-logo-icon {
  height: 2.5rem;
  width: auto;
}

.nav-logo-text {
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: -0.05em;
  display: flex;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  font-weight: 700;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--slate);
  transition: color 0.3s;
}

.nav-links a:hover {
  color: var(--blue);
}

.nav-exit-link {
  color: var(--blue) !important;
  font-size: 0.7rem !important;
  border: 1px solid var(--border);
  padding: 0.3rem 0.8rem;
  border-radius: 2rem;
  transition: all 0.3s ease;
}

.nav-exit-link:hover {
  background: var(--blue);
  color: white !important;
  border-color: var(--blue);
}

/* Buttons */
.btn {
  padding: 1rem 2rem;
  border-radius: 1rem;
  font-weight: 800;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  display: inline-block;
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(16, 163, 47, 0.2);
  filter: brightness(1.1);
}

/* Close Button */
.mobile-menu-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background: white;
  border: 1px solid rgba(0, 0, 0, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--navy);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 2000;
}

.mobile-menu-close:hover {
  transform: scale(1.05) rotate(5deg);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
  border-color: rgba(0, 0, 0, 0.15);
}

.mobile-menu-close svg {
  width: 1.5rem;
  height: 1.5rem;
}

.btn-primary:hover {
  background: var(--blue);
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(37, 99, 235, 0.2);
}

.btn-outline {
  background: transparent;
  border: 2px solid var(--navy);
  color: var(--navy);
}

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

.btn-whatsapp {
  background: #25d366;
  color: var(--white);
  box-shadow: 0 10px 20px rgba(37, 211, 102, 0.2);
}

.btn-whatsapp:hover {
  background: #22c35e;
  transform: translateY(-2px);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 6rem;
  text-align: center;
}

.hero h1 {
  font-size: clamp(3rem, 10vw, 7rem);
  margin-bottom: 2rem;
}

.hero p {
  font-size: 1.5rem;
  color: var(--slate);
  max-width: 800px;
  margin: 0 auto 3rem;
  font-weight: 500;
}

.hero-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-actions {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
}

/* Grid & Cards */
.grid {
  display: grid;
  gap: 2rem;
}

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

@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
}

.card {
  background: var(--white);
  padding: 3rem;
  border-radius: 2.5rem;
  border: 1px solid var(--border);
  /* GPU-safe transitions: only transform + box-shadow */
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.05);
}

.card-icon {
  width: 4rem;
  height: 4rem;
  border-radius: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
}

/* Problem Section */
.problem-card {
  background: #f1f5f9;
}

.problem-card h3 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

/* Dark Section */
.section-dark {
  background: var(--navy);
  color: var(--white);
}

.section-dark .card {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.1);
  color: var(--white);
}

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

/* Plans */
.plan-card {
  display: flex;
  flex-direction: column;
  position: relative;
}

.plan-popular {
  border: 3px solid var(--blue) !important;
  transform: scale(1.05);
}

.plan-popular::after {
  content: 'Most Popular';
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blue);
  color: white;
  padding: 0.5rem 1.5rem;
  border-radius: 2rem;
  font-size: 0.7rem;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.plan-card ul {
  list-style: none;
  margin: 2rem 0;
  flex-grow: 1;
}

.plan-card li {
  margin-bottom: 1rem;
  font-weight: 500;
  display: flex;
  gap: 0.75rem;
}

.plan-card li::before {
  content: '✓';
  color: var(--blue);
  font-weight: 900;
}

/* Process */
.process-step {
  text-align: center;
  position: relative;
}

.step-number {
  width: 5rem;
  height: 5rem;
  background: var(--blue);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  font-weight: 900;
  margin: 0 auto 2rem;
  border: 4px solid var(--white);
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.2);
}

/* Footer */
footer {
  padding: 4rem 1rem;
  background: var(--navy);
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: min(1200px, 92%);
  margin: 0 auto;
}

.footer-logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

@media (max-width: 768px) {
  .footer-logo {
    align-items: center;
  }
}

/* Animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
}

/* Responsive Overrides */

/* ═══ SwipeSite Mobile Hamburger ═══ */
.ss-hamburger {
  display: none; /* Hidden on desktop */
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 2.5rem;
  height: 2.5rem;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  position: relative;
  z-index: 100002;
  padding: 0;
}

.ss-hamburger-line {
  display: block;
  width: 1.5rem;
  height: 2px;
  background: var(--navy);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

.ss-hamburger-line-short {
  width: 1rem;
  margin-left: auto;
}

/* ═══ SwipeSite Mobile Overlay ═══ */
.ss-mobile-overlay {
  position: fixed;
  inset: 0;
  z-index: 100001;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.ss-mobile-overlay.active {
  pointer-events: auto;
  opacity: 1;
  visibility: visible;
}

.ss-mobile-overlay-bg {
  position: absolute;
  inset: 0;
  background: rgba(248, 250, 252, 0.97);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
}

.ss-mobile-overlay-content {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 2rem;
  gap: 2rem;
}

.ss-mobile-overlay-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  margin-bottom: 1rem;
}

.ss-mobile-nav-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1rem;
}

.ss-mobile-link {
  font-size: 1.4rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--navy);
  text-decoration: none;
  transition: color 0.3s ease;
}

.ss-mobile-link:hover {
  color: var(--green);
}

@media (max-width: 768px) {
  section { padding: 4rem 1rem; }
  .hero h1 { font-size: 3.5rem; }
  .nav-links { display: none; }
  .nav-cta-desktop { display: none !important; }
  .ss-hamburger { display: flex; }
  .footer-content { flex-direction: column; gap: 2rem; }

  /* ═══ MOBILE PERF: Reduce card hover complexity ═══ */
  .card:hover {
    transform: none;
    box-shadow: none;
  }

  /* Reduce overlay backdrop cost */
  .overlay-backdrop {
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
  
  /* Reduce nav blur cost */
  .nav-blur {
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }
}

/* System Overlay Styles */
.system-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.overlay-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
}

.overlay-content {
  position: relative;
  background: var(--white);
  width: min(800px, 100%);
  max-height: 85vh;
  border-radius: 2.5rem;
  padding: 4rem;
  overflow-y: auto;
  box-shadow: 0 40px 100px rgba(0, 0, 0, 0.2);
  transform: scale(0.9) translateY(20px);
  opacity: 0;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.overlay-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  background: #f1f5f9;
  border: none;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  font-size: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--navy);
  transition: all 0.3s;
}

.overlay-close:hover {
  background: var(--navy);
  color: var(--white);
  transform: rotate(90deg);
}

.overlay-section {
  margin-bottom: 3rem;
}

.overlay-section h2 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  color: var(--navy);
}

.overlay-section .subtitle {
  font-size: 1rem;
  font-weight: 700;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 1.5rem;
  display: block;
}

.overlay-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2.5rem;
  margin-top: 2rem;
}

.overlay-category h3 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--slate);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #e2e8f0;
}

.overlay-category ul {
  list-style: none;
}

.overlay-category li {
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--navy);
  display: flex;
  gap: 0.5rem;
}

.overlay-category li::before {
  content: '•';
  color: var(--blue);
  font-weight: 900;
}

.overlay-outcome {
  background: #f8fafc;
  padding: 2rem;
  border-radius: 1.5rem;
  margin-top: 3rem;
}

.overlay-outcome h4 {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--slate);
  margin-bottom: 1rem;
}

.overlay-outcome p {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--navy);
  line-height: 1.4;
}

.view-system-btn:hover {
  color: var(--navy) !important;
  transform: translateX(5px);
}

@media (max-width: 600px) {
  .overlay-content { padding: 3rem 1.5rem; }
  .overlay-section h2 { font-size: 1.8rem; }
}

/* Solution Section Enhancements */
#solution {
  background: radial-gradient(circle at 10% 20%, rgba(26, 54, 93, 1) 0%, rgba(10, 25, 47, 1) 90%) !important;
}

.solution-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  z-index: 1;
  opacity: 0.4;
}

.blob-green {
  width: 500px;
  height: 500px;
  background: var(--green);
  top: -100px;
  right: -100px;
}

.blob-blue {
  width: 600px;
  height: 600px;
  background: var(--blue);
  bottom: -150px;
  left: -150px;
}

#solution .card {
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1), 
              box-shadow 0.6s cubic-bezier(0.23, 1, 0.32, 1),
              background 0.3s ease;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

#solution .card:hover {
  transform: translateY(-10px) scale(1.02);
  background: rgba(255, 255, 255, 0.05) !important;
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

#solution .card:hover .card-icon {
  transform: rotate(10deg) scale(1.1);
  transition: transform 0.4s ease;
}

@keyframes pulse-soft {
  0% { opacity: 0.8; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
  100% { opacity: 0.8; transform: scale(1); }
}

#solution .section-header h2 span {
  display: inline-block;
  animation: pulse-soft 3s infinite ease-in-out;
}

/* ═══ MOBILE PERF: Disable pulse animation ═══ */
@media (max-width: 768px) {
  #solution .section-header h2 span {
    animation: none !important;
  }
  
  #solution .card:hover {
    transform: none;
    box-shadow: none;
  }
}

/* ═══ Content-visibility: Allow browser to skip rendering off-screen sections ═══ */
#services,
#process {
  content-visibility: auto;
  contain-intrinsic-size: auto 600px;
}