/* ==========================================================================
   RioDev Design System — site.css
   A premium dark-theme CSS design system for RioDev Software House
   Rio de Janeiro, Brazil
   ========================================================================== */

/* --------------------------------------------------------------------------
   0. GOOGLE FONTS
   -------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* --------------------------------------------------------------------------
   1. DESIGN TOKENS (Custom Properties)
   -------------------------------------------------------------------------- */
:root {
  /* — Colors — */
  --color-bg:              #060B14;
  --color-surface:         rgba(255, 255, 255, 0.03);
  --color-surface-hover:   rgba(255, 255, 255, 0.06);
  --color-border:          rgba(255, 255, 255, 0.06);

  --color-brand-blue:      #2D7DD2;
  --color-brand-navy:      #1B2A4A;
  --color-brand-cyan:      #4DA8DA;

  --gradient-brand:        linear-gradient(135deg, #2D7DD2, #4DA8DA);
  --gradient-accent:       linear-gradient(135deg, #1B2A4A, #2D7DD2);

  --color-text-main:       #F0F4F8;
  --color-text-muted:      #8899AA;

  /* — Typography — */
  --font-main:             'Inter', sans-serif;
  --font-mono:             'JetBrains Mono', monospace;

  /* — Motion — */
  --transition:            all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* — Layout — */
  --container-max:         1200px;
  --container-px:          24px;

  /* — Radii — */
  --radius-sm:             12px;
  --radius-md:             16px;
  --radius-lg:             20px;
  --radius-xl:             24px;
  --radius-pill:           50px;

  /* — Aliases (for inline style references) — */
  --brand-blue:            var(--color-brand-blue);
  --brand-cyan:            var(--color-brand-cyan);
  --brand-navy:            var(--color-brand-navy);
  --text-muted:            var(--color-text-muted);
  --text-main:             var(--color-text-main);
}

/* ==========================================================================
   1. RESET & BASE
   ========================================================================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

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

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

ul,
ol {
  list-style: none;
}

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
  color: inherit;
  transition: var(--transition);
}

input,
textarea {
  border: none;
  outline: none;
  font-family: inherit;
  color: inherit;
  background: none;
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.6;
}

/* ==========================================================================
   2. TYPOGRAPHY
   ========================================================================== */
h1 {
  font-size: clamp(2.8rem, 5.5vw, 4.5rem);
  letter-spacing: -2px;
  font-weight: 800;
  line-height: 1.08;
  color: var(--color-text-main);
}

h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: -1px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text-main);
}

h3 {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text-main);
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text-main);
}

p {
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   3. UTILITY CLASSES
   ========================================================================== */

/* — Text Gradients — */
.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-accent {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* — Glass Panel — */
.glass-panel {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

/* — Section Tag — */
.section-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-brand-blue);
  background: rgba(45, 125, 210, 0.08);
  border: 1px solid rgba(45, 125, 210, 0.15);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  gap: 8px;
  font-weight: 500;
  letter-spacing: 0.5px;
}

/* — Container — */
.container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
}

/* ==========================================================================
   4. BACKGROUND DECORATIVE BLOBS
   ========================================================================== */
.blob-blue {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(45, 125, 210, 0.12) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  animation: float-slow 20s ease-in-out infinite;
}

.blob-navy {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27, 42, 74, 0.12) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  animation: float-slow 25s ease-in-out infinite reverse;
}

/* ==========================================================================
   5. BUTTONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.95rem;
  gap: 10px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
  border: none;
  font-family: var(--font-main);
  line-height: 1.4;
}

/* — Primary — */
.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(45, 125, 210, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(45, 125, 210, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 16px rgba(45, 125, 210, 0.2);
}

/* — Outline — */
.btn-outline {
  background: transparent;
  color: #ffffff;
  border: 1px solid var(--color-brand-blue);
}

.btn-outline:hover {
  background: rgba(45, 125, 210, 0.1);
  transform: translateY(-2px);
}

.btn-outline:active {
  transform: translateY(0);
}

/* — Ghost — */
.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  padding: 14px 24px;
}

.btn-ghost:hover {
  color: var(--color-text-main);
}

/* — Nav CTA — */
.btn-nav-cta {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  color: var(--color-text-main);
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--transition);
}

.btn-nav-cta:hover {
  background: var(--color-surface-hover);
  border-color: rgba(45, 125, 210, 0.2);
}

/* ==========================================================================
   6. NAVIGATION / HEADER
   ========================================================================== */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 24px 0;
  background: rgba(6, 11, 20, 0);
  border-bottom: 1px solid rgba(255, 255, 255, 0);
  transition: padding 0.3s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

header.scrolled {
  padding: 16px 0;
  background: rgba(6, 11, 20, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
}

.logo img {
  height: 65px;
  width: auto;
  transition: var(--transition);
}

.logo:hover img {
  transform: scale(1.05);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
  transition: var(--transition);
  padding-bottom: 4px;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text-main);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* — Mobile Toggle — */
.mobile-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  z-index: 1001;
}

.mobile-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text-main);
  border-radius: 2px;
  transition: var(--transition);
  transform-origin: center;
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* — Mobile Menu — */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(6, 11, 20, 0.95);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

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

.mobile-menu a {
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--color-text-muted);
  margin: 16px 0;
  transition: var(--transition);
}

.mobile-menu a:hover {
  color: var(--color-text-main);
}

/* ==========================================================================
   7. HERO SECTION
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 160px;
  padding-bottom: 80px;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 400px;
  height: 200px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 200'%3E%3Cpath d='M0,160 C80,120 160,180 240,140 C320,100 360,160 400,120 L400,200 L0,200 Z' fill='rgba(45,125,210,0.03)'/%3E%3Cpath d='M0,180 C100,150 200,190 300,160 C350,145 380,170 400,155 L400,200 L0,200 Z' fill='rgba(77,168,218,0.02)'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-size: cover;
  z-index: 0;
  pointer-events: none;
  opacity: 0.6;
}

.hero-content {
  flex: 1;
  max-width: 650px;
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-brand-blue);
  background: rgba(45, 125, 210, 0.08);
  border: 1px solid rgba(45, 125, 210, 0.15);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  gap: 8px;
  font-weight: 500;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.8rem, 5.5vw, 4.5rem);
  margin-bottom: 24px;
  line-height: 1.08;
  letter-spacing: -1.5px;
}

.hero p {
  font-size: 1.2rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
  max-width: 500px;
  line-height: 1.7;
}

.hero-visual {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  position: relative;
  z-index: 2;
}

.hero-badges {
  display: flex;
  flex-direction: row;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.hero-badge {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  transition: var(--transition);
}

.hero-badge:hover {
  border-color: rgba(45, 125, 210, 0.2);
  color: var(--color-text-main);
}

.hero-cta-group {
  display: flex;
  flex-direction: row;
  gap: 16px;
  margin-top: 32px;
  flex-wrap: wrap;
}

/* ==========================================================================
   8. CODE CARD (Hero Visual)
   ========================================================================== */
.code-card {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 30px;
  max-width: 480px;
  width: 100%;
  position: relative;
  overflow: hidden;
}

.code-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-brand);
  opacity: 0.4;
}

.code-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.code-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.code-dot:nth-child(1) {
  background-color: #FF5F57;
}

.code-dot:nth-child(2) {
  background-color: #FEBC2E;
}

.code-dot:nth-child(3) {
  background-color: #28C840;
}

.code-content {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}

.code-content .keyword {
  color: #3B5998;
}

.code-content .string {
  color: var(--color-brand-cyan);
}

.code-content .function {
  color: #50fa7b;
}

.code-content .comment {
  color: #6272a4;
}

/* ==========================================================================
   9. GENERIC SECTION STYLES
   ========================================================================== */
section {
  padding: 100px 0;
  position: relative;
  width: 100%;
}

section .container {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
  position: relative;
  z-index: 1;
}

/* Alteração sutil e fluida de backgrounds por seções */
section:nth-of-type(even) {
  background: linear-gradient(180deg, var(--color-bg) 0%, rgba(27, 42, 74, 0.3) 50%, var(--color-bg) 100%);
  border-top: 1px solid rgba(45, 125, 210, 0.05);
  border-bottom: 1px solid rgba(45, 125, 210, 0.05);
}

section:nth-of-type(odd) {
  background: transparent;
}

.section-header {
  text-align: center;
  margin-bottom: 70px;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin-bottom: 16px;
  letter-spacing: -1px;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.15rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

/* ==========================================================================
   10. ABOUT SECTION
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.about-text p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.about-values {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}

.about-value {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  padding: 28px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.about-value:hover {
  transform: translateY(-3px);
  border-color: rgba(45, 125, 210, 0.25);
}

.about-value i {
  font-size: 2rem;
  color: var(--color-brand-blue);
  margin-bottom: 12px;
  display: block;
}

.about-value h4 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.about-value p {
  font-size: 0.9rem;
}

/* — Stats Grid — */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 30px;
  text-align: center;
}

.stat-item {
  padding: 30px;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
  margin-bottom: 8px;
}

.stat-label {
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 0.8rem;
}

/* ==========================================================================
   11. SERVICES SECTION
   ========================================================================== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: rgba(45, 125, 210, 0.25);
  box-shadow: 0 16px 48px rgba(45, 125, 210, 0.08);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(45, 125, 210, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--color-brand-blue);
  margin-bottom: 20px;
  border: 1px solid rgba(45, 125, 210, 0.15);
}

.service-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

.service-benefits {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.service-benefits li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.service-benefits li::before {
  content: '✓';
  color: var(--color-brand-blue);
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

/* ==========================================================================
   12. PORTFOLIO SECTION
   ========================================================================== */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 30px;
}

.portfolio-card {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.portfolio-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 50px rgba(45, 125, 210, 0.1);
  border-color: rgba(45, 125, 210, 0.2);
}

.portfolio-image {
  height: 220px;
  background-size: cover;
  background-position: center;
  position: relative;
  width: 100%;
  flex-shrink: 0;
}

.portfolio-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    var(--color-bg) 0%,
    rgba(6, 11, 20, 0.4) 40%,
    transparent 100%
  );
}

.portfolio-content {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.portfolio-category {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 2px;
  color: var(--color-brand-blue);
  font-weight: 700;
  margin-bottom: 12px;
  display: block;
}

.portfolio-content h3 {
  font-size: 1.4rem;
  margin-bottom: 10px;
}

.portfolio-content p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 16px;
  line-height: 1.6;
}

.portfolio-content .btn {
  margin-top: auto;
}

.portfolio-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.portfolio-tags span {
  background: var(--color-surface);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.portfolio-tags span:hover {
  border-color: rgba(45, 125, 210, 0.2);
  color: var(--color-text-main);
}

/* ==========================================================================
   13. DIFFERENTIALS SECTION
   ========================================================================== */
.diff-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}

.diff-item {
  text-align: center;
  padding: 30px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.diff-item:hover {
  transform: translateY(-3px);
  border-color: rgba(45, 125, 210, 0.25);
}

.diff-icon {
  font-size: 2.2rem;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 16px;
  display: block;
}

.diff-item h4 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

.diff-item p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ==========================================================================
   14. PROCESS / TIMELINE SECTION
   ========================================================================== */
.process-timeline {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  position: relative;
  padding: 40px 0;
}

.process-timeline::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-brand);
  z-index: 0;
  opacity: 0.3;
}

.process-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
  flex: 1;
}

.process-step-number {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  color: #ffffff;
  margin-bottom: 20px;
  box-shadow: 0 4px 20px rgba(45, 125, 210, 0.3);
  position: relative;
  flex-shrink: 0;
}

.process-step-number::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 2px solid rgba(45, 125, 210, 0.2);
  animation: pulse-glow 3s ease-in-out infinite;
}

.process-step h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.process-step p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  max-width: 140px;
  line-height: 1.5;
}

/* ==========================================================================
   15. TECH STACK SECTION
   ========================================================================== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 20px;
}

.tech-item {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  padding: 24px 16px;
  text-align: center;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.tech-item:hover {
  transform: translateY(-4px);
  border-color: rgba(45, 125, 210, 0.3);
  box-shadow: 0 8px 30px rgba(45, 125, 210, 0.1);
}

.tech-item i {
  font-size: 2.5rem;
  margin-bottom: 12px;
  color: var(--color-brand-blue);
  display: block;
}

.tech-item span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  display: block;
  font-weight: 500;
}

/* ==========================================================================
   16. TESTIMONIALS SECTION
   ========================================================================== */
.testimonials-slider {
  position: relative;
  overflow: hidden;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.testimonials-track {
  display: flex;
  transition: transform 0.5s ease;
}

.testimonial-card {
  min-width: 100%;
  padding: 50px 40px;
  text-align: center;
}

.testimonial-quote {
  font-size: 1.15rem;
  color: var(--color-text-main);
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 30px;
  position: relative;
}

.testimonial-quote::before {
  content: '\201C';
  font-size: 4rem;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  position: absolute;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0.3;
  line-height: 1;
  font-style: normal;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.testimonial-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.testimonial-name {
  font-weight: 600;
  font-size: 1rem;
  color: var(--color-text-main);
}

.testimonial-role {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.testimonials-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 30px;
}

.testimonials-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 0;
  cursor: pointer;
  transition: var(--transition);
}

.testimonials-dots button:hover {
  border-color: var(--color-brand-blue);
}

.testimonials-dots button.active {
  background: var(--gradient-brand);
  border-color: transparent;
  transform: scale(1.2);
}

/* ==========================================================================
   17. CTA SECTION
   ========================================================================== */
.cta-section {
  background:
    linear-gradient(
      135deg,
      rgba(45, 125, 210, 0.03) 0%,
      rgba(27, 42, 74, 0.03) 100%
    ),
    var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 80px 60px;
  border-radius: var(--radius-xl);
  text-align: center;
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(45, 125, 210, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(27, 42, 74, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.cta-section p {
  color: var(--color-text-muted);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 40px;
  font-size: 1.1rem;
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.cta-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   18. CONTACT SECTION
   ========================================================================== */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.contact-info h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.contact-info p {
  color: var(--color-text-muted);
  margin-bottom: 40px;
  font-size: 1.1rem;
  line-height: 1.7;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.method {
  background: var(--color-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.method:hover {
  border-color: rgba(45, 125, 210, 0.25);
  transform: translateX(8px);
}

.method-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(45, 125, 210, 0.1);
  color: var(--color-brand-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.method-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.method-value {
  font-weight: 500;
  color: var(--color-text-main);
  font-size: 0.95rem;
}

/* — Contact Form — */
.form-group {
  margin-bottom: 20px;
}

.form-control {
  width: 100%;
  padding: 16px 20px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--color-border);
  border-radius: 14px;
  color: var(--color-text-main);
  font-family: var(--font-main);
  font-size: 1rem;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--color-brand-blue);
  background: rgba(45, 125, 210, 0.05);
  box-shadow: 0 0 0 3px rgba(45, 125, 210, 0.1);
}

textarea.form-control {
  height: 150px;
  resize: vertical;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

/* ==========================================================================
   19. FOOTER
   ========================================================================== */
footer {
  border-top: 1px solid var(--color-border);
  padding: 80px var(--container-px) 40px;
  margin-top: 80px;
  background-color: var(--color-bg);
}

.footer-grid {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 60px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 50px;
}

.footer-brand p {
  color: var(--color-text-muted);
  margin-top: 20px;
  max-width: 300px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.footer-brand .logo img {
  height: 34px;
}

.footer-col h4 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: var(--color-text-main);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.footer-col a {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  transition: var(--transition);
}

.footer-col a:hover {
  color: var(--color-brand-blue);
  padding-left: 5px;
}

.footer-bottom {
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.footer-bottom a {
  color: var(--color-brand-blue);
}

.footer-bottom a:hover {
  color: var(--color-brand-cyan);
}

/* ==========================================================================
   20. ANIMATIONS
   ========================================================================== */

/* — Fade In Up — */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
}

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

/* — Delay Utilities — */
.delay-1 {
  animation-delay: 0.15s;
}

.delay-2 {
  animation-delay: 0.3s;
}

.delay-3 {
  animation-delay: 0.45s;
}

/* — Scroll Reveal — */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* — Float Slow (Blobs) — */
@keyframes float-slow {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(50px, 50px) scale(1.1);
  }
}

/* — Pulse Glow (Process Steps) — */
@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(45, 125, 210, 0.1);
    opacity: 1;
  }
  50% {
    box-shadow: 0 0 0 12px rgba(45, 125, 210, 0);
    opacity: 0.6;
  }
}

/* — Gradient Shift — */
@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* — 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;
  }

  .fade-in-up,
  .reveal {
    opacity: 1;
    transform: none;
  }

  .blob-blue,
  .blob-navy {
    animation: none;
  }

  .process-step-number::after {
    animation: none;
  }
}

/* ==========================================================================
   21. RESPONSIVE — 1200px
   ========================================================================== */
@media (max-width: 1200px) {
  section {
    padding: 80px var(--container-px);
  }

  .cta-section {
    padding: 60px 40px;
  }

  .footer-grid {
    gap: 40px;
  }
}

/* ==========================================================================
   22. RESPONSIVE — 992px
   ========================================================================== */
@media (max-width: 992px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 140px;
  }

  .hero-content {
    max-width: 100%;
    align-items: center;
    display: flex;
    flex-direction: column;
  }

  .hero p {
    max-width: 100%;
  }

  .hero-visual {
    justify-content: center;
    margin-top: 50px;
  }

  .hero-badges {
    justify-content: center;
  }

  .hero-cta-group {
    justify-content: center;
  }

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

  .about-text {
    text-align: center;
  }

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

  .process-timeline {
    flex-direction: column;
    gap: 40px;
    align-items: center;
  }

  .process-timeline::before {
    display: none;
  }

  .process-step p {
    max-width: 280px;
  }

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

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

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

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

/* ==========================================================================
   23. RESPONSIVE — 768px
   ========================================================================== */
@media (max-width: 768px) {
  .blob-blue,
  .blob-navy {
    display: none;
  }

  .nav-links {
    display: none;
  }

  .btn-nav-cta {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .logo img {
    height: 48px;
  }

  header {
    padding: 12px 0;
  }

  .nav-container {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero h1 {
    font-size: clamp(2rem, 6vw, 2.8rem);
    letter-spacing: -1px;
  }

  .code-card {
    max-width: 100%;
    padding: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .footer-brand {
    text-align: center;
  }

  .footer-brand p {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  section {
    padding: 60px 20px;
  }

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

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

  .testimonial-card {
    padding: 30px 20px;
  }

  .testimonial-quote {
    font-size: 1.05rem;
  }

  .section-header {
    margin-bottom: 50px;
  }

  .cta-section {
    padding: 50px 30px;
  }

  .about-text h2 {
    font-size: 2rem;
  }

  .stats-grid {
    gap: 20px;
  }

  .stat-number {
    font-size: 2.5rem;
  }
}

/* ==========================================================================
   24. RESPONSIVE — 480px
   ========================================================================== */
@media (max-width: 480px) {
  .logo img {
    height: 40px;
  }

  .hero {
    padding-top: 120px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero h1 {
    font-size: 2rem;
    letter-spacing: -0.5px;
  }

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

  section {
    padding: 50px 16px;
  }

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

  .service-card {
    padding: 28px 20px;
  }

  .cta-section {
    padding: 40px 20px;
  }

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

  .tech-item {
    padding: 18px 10px;
  }

  .tech-item i {
    font-size: 2rem;
  }

  .process-step-number {
    width: 48px;
    height: 48px;
    font-size: 1rem;
  }

  .process-step-number::after {
    inset: -4px;
  }

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

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

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

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

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .method {
    flex-direction: column;
    text-align: center;
    padding: 24px 16px;
  }

  .method:hover {
    transform: translateY(-3px);
  }

  h1 {
    font-size: 2rem;
    letter-spacing: -1px;
  }

  h2 {
    font-size: 1.75rem;
    letter-spacing: -0.5px;
  }

  .section-header p {
    font-size: 1rem;
  }

  .mobile-menu a {
    font-size: 1.5rem;
  }

  .stat-number {
    font-size: 2.2rem;
  }

  .stat-item {
    padding: 20px 10px;
  }

  .footer-bottom {
    font-size: 0.8rem;
  }
}

/* ==========================================================================
   END OF DESIGN SYSTEM
   ========================================================================== */