/* ==========================================
   MEHROTECH - Main Stylesheet
   Pure CSS, No Frameworks
   ========================================== */

/* --- CSS Custom Properties --- */
:root {
  --color-bg: #0a0a0a;
  --color-bg-light: #111111;
  --color-bg-card: rgba(255, 255, 255, 0.03);
  --color-bg-card-strong: rgba(255, 255, 255, 0.06);
  --color-primary: #ef4444;
  --color-primary-dark: #dc2626;
  --color-primary-darker: #b91c1c;
  --color-primary-light: #f87171;
  --color-primary-glow: rgba(239, 68, 68, 0.3);
  --color-text: #ffffff;
  --color-text-muted: #9ca3af;
  --color-text-dim: #6b7280;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-light: rgba(255, 255, 255, 0.1);
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  --shadow-glow: 0 0 60px rgba(239, 68, 68, 0.3), 0 0 100px rgba(239, 68, 68, 0.1);
  --transition-base: all 0.3s ease;
  --transition-bounce: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --max-width: 1280px;
}

/* --- Light Mode Overrides --- */
:root.light-mode {
  --color-bg: #f9fafb;
  --color-bg-light: #ffffff;
  --color-bg-card: rgba(255, 255, 255, 0.7);
  --color-bg-card-strong: rgba(255, 255, 255, 0.9);
  --color-text: #111827;
  --color-text-muted: #4b5563;
  --color-text-dim: #6b7280;
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-light: rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 10px 30px rgba(239, 68, 68, 0.15), 0 0 40px rgba(239, 68, 68, 0.05);
}

/* Add custom light mode background grid overlay */
:root.light-mode body.bg-grid {
  background-image:
    linear-gradient(rgba(0, 0, 0, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
}

/* Invert glass effect for light mode */
:root.light-mode .glass,
:root.light-mode .glass-strong {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

/* Fix navbar solid appearance in light mode */
:root.light-mode .navbar-inner {
  background: rgba(255, 255, 255, 0.85);
}

/* Make secondary buttons visible in light mode */
:root.light-mode .btn-secondary {
  color: #111827;
  background: rgba(255, 255, 255, 0.9);
}

:root.light-mode .btn-secondary:hover {
  background: #f3f4f6;
}


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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul,
ol {
  list-style: none;
}

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

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

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

/* --- Utility Classes --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1rem;
}

.font-display {
  font-family: var(--font-display);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* --- Glass Morphism --- */
.glass {
  background: var(--color-bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
}

.glass-strong {
  background: var(--color-bg-card-strong);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
  border: 1px solid var(--color-border-light);
}

/* --- Gradient & Glow Effects --- */
.gradient-text {
  background: linear-gradient(135deg, #fff 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.gradient-red {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 50%, var(--color-primary-darker) 100%);
  color: #ffffff;
}

.red-glow {
  box-shadow: var(--shadow-glow);
}

.text-glow {
  text-shadow: 0 0 40px rgba(239, 68, 68, 0.5);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  transform: scale(1.05);
}

.btn-secondary {
  background: var(--color-bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border-light);
  color: #fff;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.1rem;
  border-radius: var(--radius-xl);
}

/* --- Background Grid --- */
.bg-grid {
  background-image:
    linear-gradient(rgba(239, 68, 68, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(239, 68, 68, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}

/* --- Section Styling --- */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  color: var(--color-primary-light);
  margin-bottom: 1rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  margin-bottom: 1rem;
  line-height: 1.2;
}

.section-desc {
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: var(--transition-base);
  padding: 0 1rem;
}

.navbar-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  margin-top: 1rem;
  border-radius: var(--radius-xl);
  padding: 1rem 1.5rem;
  transition: var(--transition-base);
  /* Add transition for smoothness */
}

/* Let JS toggle a class instead of inline styles */
.navbar-inner.scrolled {
  background: rgba(10, 10, 10, 0.95);
  border-color: rgba(239, 68, 68, 0.15);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  /* Optional deeper shadow when scrolling */
}

/* Light mode overrides for scrolling navbar */
:root.light-mode .navbar-inner.scrolled {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(0, 0, 0, 0.1);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.navbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.navbar-logo {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
}

.navbar-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
}

.navbar-links {
  display: none;
  align-items: center;
  gap: 2rem;
}

.navbar-link {
  font-size: 0.875rem;
  font-weight: 500;
  transition: var(--transition-base);
  position: relative;
}

.navbar-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transition: width 0.3s;
}

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

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

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.navbar-cta {
  display: none;
}

.mobile-toggle {
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 1.25rem;
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 1rem;
  right: 1rem;
  margin-top: 0.5rem;
  border-radius: var(--radius-xl);
  padding: 1.5rem;
}

.mobile-menu.active {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 0.75rem 0;
  transition: var(--transition-base);
}

.mobile-menu a:hover {
  color: var(--color-primary-light);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 6rem;
  padding-bottom: 4rem;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse at top, rgba(239, 68, 68, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(185, 28, 28, 0.1) 0%, transparent 50%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
}

.hero-badge-dot {
  width: 0.5rem;
  height: 0.5rem;
  background: #4ade80;
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.4;
  }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin: 1.5rem 0;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 560px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
}

.hero-stat-value {
  font-family: var(--font-display);
  font-size: 1.875rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--color-text-dim);
  margin-top: 0.25rem;
}

.hero-stat-divider {
  width: 1px;
  height: 3rem;
  background: var(--color-border-light);
}

.hero-visual {
  display: none;
}

.hero-card {
  padding: 2rem;
  border-radius: var(--radius-xl);
}

.hero-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  animation: float 6s ease-in-out infinite;
  pointer-events: none;
}

.hero-bg-orb-1 {
  top: 25%;
  right: 25%;
  width: 24rem;
  height: 24rem;
  background: rgba(239, 68, 68, 0.1);
}

.hero-bg-orb-2 {
  bottom: 25%;
  left: 25%;
  width: 16rem;
  height: 16rem;
  background: rgba(185, 28, 28, 0.1);
  animation-delay: -3s;
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  animation: scroll-bounce 2s infinite;
  color: var(--color-text-dim);
}

/* --- Services Grid --- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.service-card {
  padding: 2rem;
  border-radius: var(--radius-xl);
  transition: var(--transition-bounce);
}

.service-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: 0 25px 50px rgba(239, 68, 68, 0.15);
}

.service-icon {
  width: 4rem;
  height: 4rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  transition: var(--transition-base);
}

.service-card:hover .service-icon {
  transform: scale(1.1);
}

.service-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  line-height: 1.6;
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.service-features li {
  font-size: 0.85rem;
  color: var(--color-text-dim);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-features li i {
  color: var(--color-primary-light);
  font-size: 0.75rem;
}

/* --- Pricing --- */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.pricing-card {
  padding: 2rem;
  border-radius: var(--radius-xl);
  transition: var(--transition-bounce);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-8px);
}

.pricing-card.popular {
  border: 2px solid rgba(239, 68, 68, 0.3);
  box-shadow: var(--shadow-glow);
}

.pricing-badge {
  position: absolute;
  top: -0.75rem;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.25rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
}

.pricing-header {
  text-align: center;
  margin-bottom: 1.5rem;
}

.pricing-name {
  display: inline-block;
  padding: 0.25rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.pricing-price {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
}

.pricing-tagline {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
}

.pricing-features li i {
  color: var(--color-primary-light);
}

.pricing-btn {
  width: 100%;
  padding: 0.875rem;
  border-radius: var(--radius-lg);
  font-weight: 600;
  transition: var(--transition-base);
}

/* --- About Section --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin: 2rem 0;
}

.about-stat-card {
  padding: 1.25rem;
  border-radius: var(--radius-lg);
}

.about-stat-value {
  font-family: var(--font-display);
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--color-primary-light);
}

.about-stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.why-choose-card {
  padding: 2rem;
  border-radius: var(--radius-xl);
}

.why-choose-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.why-choose-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.why-choose-icon {
  width: 2.5rem;
  height: 2.5rem;
  min-width: 2.5rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.why-choose-item h4 {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.why-choose-item p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* --- Testimonials --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.testimonial-card {
  padding: 2rem;
  border-radius: var(--radius-xl);
  transition: var(--transition-bounce);
}

.testimonial-card:hover {
  transform: translateY(-5px);
}

.testimonial-stars {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 1rem;
  color: #fbbf24;
}

.testimonial-text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.testimonial-avatar {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.testimonial-name {
  font-weight: 600;
}

.testimonial-role {
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

/* --- Contact Section --- */
.contact-section {
  background: radial-gradient(ellipse at top, rgba(239, 68, 68, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(185, 28, 28, 0.1) 0%, transparent 50%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.contact-form-card {
  padding: 2rem;
  border-radius: var(--radius-xl);
}

.form-group {
  margin-bottom: 1.5rem;
}

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

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 0.875rem 1rem;
  border-radius: var(--radius-lg);
  background: var(--color-bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  color: #fff;
  transition: var(--transition-base);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.2);
}

.form-input::placeholder {
  color: var(--color-text-dim);
}

textarea.form-input {
  resize: none;
  min-height: 120px;
}

.contact-info-card {
  padding: 1.5rem;
  border-radius: var(--radius-xl);
  margin-bottom: 1.5rem;
}

.contact-info-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
}

.contact-info-icon {
  width: 3rem;
  height: 3rem;
  min-width: 3rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-info-label {
  font-weight: 500;
}

.contact-info-value {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.social-links {
  display: flex;
  gap: 0.75rem;
}

.social-link {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  transition: var(--transition-base);
}

.social-link:hover {
  background: rgba(239, 68, 68, 0.2);
  transform: translateY(-2px);
}

/* --- FAQ Section --- */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.5rem;
  text-align: left;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  transition: var(--transition-base);
}

.faq-question:hover {
  color: var(--color-primary-light);
}

.faq-question i {
  transition: transform 0.3s;
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer-inner {
  padding: 0 1.5rem 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* --- Footer --- */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-top: 1.5rem;
  line-height: 1.6;
}

.footer-heading {
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  transition: var(--transition-base);
}

.footer-links a:hover {
  color: var(--color-primary-light);
}

.footer-locations li {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding-top: 2rem;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* --- Quote Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
}

.modal-overlay.active {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  width: 100%;
  max-width: 640px;
  margin: 1rem;
  padding: 2rem;
  border-radius: var(--radius-xl);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-close {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-base);
}

.modal-close:hover {
  background: rgba(239, 68, 68, 0.2);
}

/* --- Chat Widget --- */
.chat-widget {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 50;
  display: flex;
  gap: 0.75rem;
}

.chat-btn {
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  transition: var(--transition-base);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.chat-btn:hover {
  transform: scale(1.1);
}

.chat-btn-whatsapp {
  background: #25d366;
}

.chat-btn-chat {
  animation: pulse-red 2s infinite;
}

/* --- Particle Background --- */
.particles {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: rgba(239, 68, 68, 0.15);
  border-radius: 50%;
}

/* --- Animations --- */
@keyframes float {

  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }

  50% {
    transform: translateY(-20px) rotate(2deg);
  }
}

@keyframes pulse-red {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4);
  }

  50% {
    box-shadow: 0 0 0 20px rgba(239, 68, 68, 0);
  }
}

@keyframes scroll-bounce {

  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }

  50% {
    transform: translateX(-50%) translateY(10px);
  }
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Quote Calculator --- */
.step-indicator {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  z-index: 2;
  position: relative;
  transition: all 0.3s ease;
}

:root.light-mode .step-indicator {
  background: #fff;
  border-color: rgba(0, 0, 0, 0.1);
}

.step-indicator.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.selectable-card,
.selectable-row {
  cursor: pointer;
  border: 2px solid transparent;
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all 0.2s ease;
  display: block;
}

.selectable-row {
  text-align: left;
  display: flex;
  align-items: center;
  padding: 1rem 1.5rem;
}

.selectable-card:hover,
.selectable-row:hover {
  border-color: rgba(239, 68, 68, 0.3);
  transform: translateY(-2px);
}

.selectable-card.selected,
.selectable-row.selected {
  border-color: var(--color-primary);
  background: rgba(239, 68, 68, 0.05);
  box-shadow: 0 0 20px rgba(239, 68, 68, 0.1);
}

:root.light-mode .selectable-card.selected,
:root.light-mode .selectable-row.selected {
  background: rgba(239, 68, 68, 0.1);
}

.quote-step {
  animation: fadeIn 0.4s ease forwards;
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 50;
  transition: var(--transition-base);
  opacity: 0;
}

.back-to-top.visible {
  display: flex;
  opacity: 1;
}

.back-to-top:hover {
  transform: scale(1.1);
}

/* --- Portfolio Mini Section (on homepage) --- */
.portfolio-preview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.portfolio-preview-card {
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition-bounce);
}

.portfolio-preview-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 25px 50px rgba(239, 68, 68, 0.15);
}

.portfolio-preview-img {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.portfolio-preview-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition-base);
}

.portfolio-preview-card:hover .portfolio-preview-overlay {
  opacity: 1;
}

.portfolio-preview-body {
  padding: 1.5rem;
}

.portfolio-preview-category {
  font-size: 0.75rem;
  color: var(--color-primary-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.portfolio-preview-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  margin-top: 0.5rem;
}

.portfolio-preview-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.portfolio-preview-tech span {
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
}

/* --- Responsive Breakpoints --- */
@media (min-width: 640px) {
  .container {
    padding: 0 1.5rem;
  }

  .navbar-cta {
    display: inline-flex;
  }

  .navbar-name {
    display: block;
  }

  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 768px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

@media (min-width: 1024px) {
  .navbar-links {
    display: flex;
  }

  .mobile-toggle {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-visual {
    display: block;
  }

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

  .about-grid {
    grid-template-columns: 1fr 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

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

@media (min-width: 1280px) {
  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* --- Print Styles --- */
@media print {

  .navbar,
  .chat-widget,
  .back-to-top,
  .particles,
  .modal-overlay {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }
}