/* ========================================
   NEXA CONSULTING - Main Stylesheet
   Design System v1.0
   ======================================== */

/* ----- CSS Custom Properties ----- */
:root {
  /* Colors */
  --color-navy: #0A1F44;
  --color-navy-light: #122a5e;
  --color-blue: #1565C0;
  --color-blue-dark: #0d47a1;
  --color-sky: #29B6F6;
  --color-light: #E3F2FD;
  --color-gray: #F5F7FA;
  --color-gray-dark: #e0e4ea;
  --color-gray-text: #6b7280;
  --color-white: #FFFFFF;
  --color-dark: #1a1a2e;
  --color-success: #10b981;
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.8125rem;
  --font-size-base: 0.9375rem;
  --font-size-md: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(10, 31, 68, 0.05);
  --shadow-md: 0 4px 12px rgba(10, 31, 68, 0.08);
  --shadow-lg: 0 10px 30px rgba(10, 31, 68, 0.1);
  --shadow-xl: 0 20px 50px rgba(10, 31, 68, 0.12);
  --shadow-glow: 0 0 30px rgba(21, 101, 192, 0.15);
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* Container */
  --container-max: 1200px;
  --container-padding: 1.5rem;
  
  /* Header */
  --header-height: 4rem;
  
  /* Z-index */
  --z-header: 1000;
  --z-overlay: 900;
  --z-preloader: 9999;
  --z-backtop: 800;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-navy);
  background-color: var(--color-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul, ol {
  list-style: none;
}

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

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

/* Focus styles for accessibility */
:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background: var(--color-blue);
  color: var(--color-white);
}

/* ----- Preloader ----- */
.preloader {
  position: fixed;
  inset: 0;
  background: var(--color-navy);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-preloader);
  transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.preloader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.preloader__content {
  text-align: center;
}

.preloader__logo {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  color: var(--color-white);
  margin-bottom: var(--space-6);
}

.preloader__bar {
  width: 200px;
  height: 3px;
  background: rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 0 auto;
}

.preloader__progress {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--color-sky), var(--color-blue));
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

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

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.75rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.2;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  white-space: nowrap;
  gap: 0.5rem;
  text-decoration: none;
}

.btn--primary {
  background: var(--color-blue);
  color: var(--color-white);
  border: 2px solid var(--color-blue);
  box-shadow: 0 4px 14px rgba(21, 101, 192, 0.3);
}

.btn--primary:hover {
  background: var(--color-blue-dark);
  border-color: var(--color-blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(21, 101, 192, 0.35);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid rgba(255,255,255,0.4);
}

.btn--outline:hover {
  border-color: var(--color-white);
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: var(--font-size-xs);
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: var(--font-size-md);
}

.btn--full {
  width: 100%;
}

/* ----- Section shared ----- */
.section {
  padding: var(--space-20) 0;
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-12);
}

.section__tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-blue);
  background: var(--color-light);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.section__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: var(--line-height-tight);
  color: var(--color-navy);
  margin-bottom: var(--space-4);
}

.section__desc {
  font-size: var(--font-size-lg);
  color: var(--color-gray-text);
  line-height: var(--line-height-relaxed);
}

/* ----- Text utilities ----- */
.text-gradient {
  background: linear-gradient(135deg, var(--color-sky), var(--color-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ========================================
   HEADER
   ======================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-header);
  height: var(--header-height);
  transition: background var(--transition-base), backdrop-filter var(--transition-base);
}

.header.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 1px 3px rgba(10, 31, 68, 0.05);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  color: var(--color-white);
  transition: color var(--transition-fast);
}

.header.scrolled .header__logo {
  color: var(--color-navy);
}

.header__logo-icon {
  font-size: 1.4rem;
  color: var(--color-sky);
  line-height: 1;
}

.header__logo-text {
  font-size: var(--font-size-lg);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.header__logo-text small {
  font-weight: 300;
  opacity: 0.7;
  font-size: 0.8em;
}

.header__nav {
  display: flex;
  align-items: center;
}

.header__menu {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.header__menu-link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  padding: 0.375rem 0.875rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.header.scrolled .header__menu-link {
  color: var(--color-navy);
}

.header__menu-link:hover,
.header__menu-link.active {
  color: var(--color-white);
  background: rgba(255,255,255,0.1);
}

.header.scrolled .header__menu-link:hover,
.header.scrolled .header__menu-link.active {
  color: var(--color-blue);
  background: var(--color-light);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: transparent;
  gap: 5px;
  position: relative;
  z-index: 10;
}

.header__hamburger-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.header.scrolled .header__hamburger-line {
  background: var(--color-navy);
}

.header__hamburger.active .header__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--color-white);
}

.header__hamburger.active .header__hamburger-line:nth-child(2) {
  opacity: 0;
}

.header__hamburger.active .header__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--color-white);
}

/* ========================================
   HERO
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--color-navy);
  color: var(--color-white);
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero__bg {
  position: absolute;
  inset: 0;
}

.hero__gradient {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(21, 101, 192, 0.25) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(41, 182, 246, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(10, 31, 68, 0.5) 0%, transparent 40%);
}

.hero__pattern {
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 30px 30px;
  opacity: 0.5;
}

.hero__container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

.hero__content {
  max-width: 580px;
}

.hero__badge {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-sky);
  background: rgba(41, 182, 246, 0.12);
  border: 1px solid rgba(41, 182, 246, 0.2);
  padding: 0.3rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-6);
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-6);
  letter-spacing: -0.02em;
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,0.7);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-8);
  max-width: 480px;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* Dashboard visual */
.hero__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__dashboard {
  width: 100%;
  max-width: 480px;
  display: grid;
  gap: var(--space-4);
}

.dashboard-card {
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
}

.dashboard-card--1 {
  grid-column: 1 / -1;
}

.dashboard-card--2,
.dashboard-card--3 {
  flex: 1;
}

.dashboard-card__header {
  display: flex;
  gap: 5px;
  margin-bottom: var(--space-4);
}

.dashboard-card__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
}

.dashboard-card__dot:nth-child(1) { background: #ff6b6b; }
.dashboard-card__dot:nth-child(2) { background: #ffd93d; }
.dashboard-card__dot:nth-child(3) { background: #6bcb77; }

.dashboard-chart {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  height: 100px;
}

.dashboard-chart__bar {
  flex: 1;
  background: linear-gradient(to top, var(--color-blue), var(--color-sky));
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  min-height: 20px;
  opacity: 0.8;
  transition: height 1s ease;
}

.dashboard-card__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}

.dashboard-card__label {
  font-size: var(--font-size-xs);
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}

.dashboard-card__value {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-white);
}

.dashboard-card__value--green {
  color: var(--color-success);
}

.dashboard-card__progress {
  height: 4px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.dashboard-card__progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-sky), var(--color-blue));
  border-radius: var(--radius-full);
}

/* Hero stats */
.hero__stats {
  position: relative;
  z-index: 2;
  padding: var(--space-8) 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  margin-top: var(--space-4);
}

.hero__stats-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}

.hero__stat {
  text-align: center;
}

.hero__stat--cta {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-4) 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
}

.hero__stat-number {
  display: block;
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-white);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.hero__stat-label {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  font-weight: 500;
}

.hero__stat-label--large {
  font-size: var(--font-size-2xl);
  color: var(--color-white);
  font-weight: 700;
  line-height: var(--line-height-tight);
}

/* ========================================
   ABOUT
   ======================================== */
.about {
  background: var(--color-white);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.about__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.about__card {
  background: var(--color-gray);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border-left: 4px solid var(--color-blue);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.about__card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.about__card-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.about__card-text {
  color: var(--color-gray-text);
  line-height: var(--line-height-relaxed);
  font-size: var(--font-size-base);
}

.about__values {
  background: var(--color-navy);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  color: var(--color-white);
}

.about__values-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--space-8);
}

.about__values-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.about__value-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.about__value-icon {
  font-size: 1.2rem;
  color: var(--color-sky);
  flex-shrink: 0;
  margin-top: 2px;
}

.about__value-item strong {
  display: block;
  font-size: var(--font-size-md);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.about__value-item p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  line-height: var(--line-height-normal);
}

/* ========================================
   SERVICES
   ======================================== */
.services {
  background: var(--color-gray);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid var(--color-gray-dark);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-sky));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card--featured {
  border-color: var(--color-blue);
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-light) 100%);
}

.service-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-5);
  display: block;
  line-height: 1;
}

.service-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.service-card__desc {
  font-size: var(--font-size-base);
  color: var(--color-gray-text);
  line-height: var(--line-height-relaxed);
}

.service-card__tag {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  color: var(--color-blue);
  background: var(--color-light);
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

/* ========================================
   SECTORS
   ======================================== */
.sectors {
  background: var(--color-white);
}

.sectors__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.sector-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid var(--color-gray-dark);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.sector-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(21,101,192,0.03) 0%, rgba(41,182,246,0.05) 100%);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sector-card:hover {
  border-color: var(--color-blue);
  box-shadow: var(--shadow-lg);
}

.sector-card:hover::before {
  opacity: 1;
}

.sector-card__icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-light);
  color: var(--color-blue);
  margin-bottom: var(--space-5);
  transition: all var(--transition-base);
}

.sector-card:hover .sector-card__icon-wrap {
  background: var(--color-blue);
  color: var(--color-white);
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(21,101,192,0.2);
}

.sector-card__title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.sector-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-text);
  line-height: var(--line-height-relaxed);
}

/* ========================================
   METHODOLOGY
   ======================================== */
.methodology {
  background: var(--color-gray);
}

.methodology__timeline {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: var(--space-4);
  position: relative;
}

.methodology__timeline::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: var(--color-gray-dark);
  z-index: 1;
}

.methodology-step {
  text-align: center;
  position: relative;
  z-index: 2;
}

.methodology-step__number {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-white);
  border: 2px solid var(--color-gray-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-blue);
  margin: 0 auto var(--space-4);
  transition: all var(--transition-base);
}

.methodology-step:hover .methodology-step__number {
  background: var(--color-blue);
  border-color: var(--color-blue);
  color: var(--color-white);
  box-shadow: var(--shadow-glow);
  transform: scale(1.1);
}

.methodology-step__icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-2);
  display: block;
}

.methodology-step__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--space-1);
}

.methodology-step__desc {
  font-size: var(--font-size-xs);
  color: var(--color-gray-text);
  line-height: var(--line-height-normal);
}

/* ========================================
   PROJECTS
   ======================================== */
.projects {
  background: var(--color-white);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.project-card {
  background: var(--color-gray);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.project-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-blue), var(--color-sky));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

.project-card:hover::after {
  transform: scaleX(1);
}

.project-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.project-card__desc {
  font-size: var(--font-size-base);
  color: var(--color-gray-text);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-5);
}

.project-card__techs {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.project-card__tech {
  font-size: var(--font-size-xs);
  font-weight: 500;
  color: var(--color-blue);
  background: var(--color-light);
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-full);
}

.project-card__benefits {
  list-style: none;
}

.project-card__benefit {
  font-size: var(--font-size-sm);
  color: var(--color-gray-text);
  padding: var(--space-1) 0;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.project-card__benefit::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
}

/* ========================================
   BENEFITS
   ======================================== */
.benefits {
  background: var(--color-navy);
  color: var(--color-white);
}

.benefits .section__tag {
  background: rgba(41, 182, 246, 0.15);
  color: var(--color-sky);
}

.benefits .section__title {
  color: var(--color-white);
}

.benefits .section__desc {
  color: rgba(255,255,255,0.6);
}

.benefits__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.benefit-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
}

.benefit-card:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.15);
  transform: translateY(-4px);
}

.benefit-card__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-4);
  display: block;
}

.benefit-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.benefit-card__desc {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  line-height: var(--line-height-relaxed);
}

/* ========================================
   CLIENTS
   ======================================== */
.clients {
  background: var(--color-gray);
  padding: var(--space-16) 0;
  overflow: hidden;
}

.clients .section__header {
  margin-bottom: var(--space-8);
}

.clients__carousel {
  width: 100%;
  overflow: hidden;
  mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 8%,
    black 92%,
    transparent 100%
  );
  -webkit-mask-image: linear-gradient(
    to right,
    transparent 0%,
    black 8%,
    black 92%,
    transparent 100%
  );
}

.clients__track {
  display: flex;
  gap: var(--space-10);
  width: max-content;
  animation: clients-scroll 30s linear infinite;
}

.client-logo {
  flex-shrink: 0;
  width: 160px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.client-logo img {
  max-width: 100%;
  max-height: 100%;
  filter: grayscale(100%);
  opacity: 0.5;
  transition: all var(--transition-base);
  object-fit: contain;
}

.client-logo:hover img {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.08);
}

@keyframes clients-scroll {
  0% {
    transform: translateX(0);
  }
  100% {
    transform: translateX(-50%);
  }
}

.services__cta {
  text-align: center;
  margin-top: var(--space-10);
}

.projects__cta {
  text-align: center;
  margin-top: var(--space-10);
}

.contact__info-cta {
  background: var(--color-light);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  text-align: center;
  margin-top: var(--space-4);
}

.contact__info-cta p {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--space-4);
}

.about__values-cta {
  margin-top: var(--space-8);
  text-align: center;
}

.about__values-cta .btn {
  color: var(--color-white);
  border-color: rgba(255,255,255,0.3);
}

.about__values-cta .btn:hover {
  border-color: var(--color-white);
  background: rgba(255,255,255,0.1);
}

/* ========================================
   CTA
   ======================================== */
.cta {
  background: var(--color-navy);
  position: relative;
  overflow: hidden;
  padding: var(--space-24) 0;
}

.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 30% 50%, rgba(21, 101, 192, 0.2) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(41, 182, 246, 0.1) 0%, transparent 50%);
}

.cta__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.cta__title {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-white);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-6);
}

.cta__text {
  font-size: var(--font-size-lg);
  color: rgba(255,255,255,0.7);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-8);
}

/* ========================================
   CONTACT
   ======================================== */
.contact {
  background: var(--color-gray);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-12);
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact__info-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  background: var(--color-white);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.contact__info-icon {
  font-size: 1.3rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.contact__info-item h4 {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--space-1);
}

.contact__info-item a {
  font-size: var(--font-size-base);
  color: var(--color-blue);
  transition: color var(--transition-fast);
}

.contact__info-item a:hover {
  color: var(--color-blue-dark);
}

.contact__form {
  background: var(--color-white);
  padding: var(--space-10);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.contact__form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-5);
}

.contact__form-group {
  margin-bottom: var(--space-5);
}

.contact__form-row .contact__form-group {
  margin-bottom: 0;
}

.contact__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: var(--space-2);
}

.contact__input {
  width: 100%;
  padding: 0.8rem 1rem;
  font-size: var(--font-size-base);
  color: var(--color-navy);
  background: var(--color-gray);
  border: 1.5px solid var(--color-gray-dark);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  outline: none;
}

.contact__input:focus {
  border-color: var(--color-blue);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.1);
}

.contact__textarea {
  resize: vertical;
  min-height: 100px;
}

.contact__input.error {
  border-color: #ef4444;
}

.contact__error {
  display: none;
  font-size: var(--font-size-xs);
  color: #ef4444;
  margin-top: var(--space-1);
}

.contact__input.error + .contact__error {
  display: block;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--color-navy);
  color: var(--color-white);
  padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: var(--space-4);
}

.footer__logo-icon {
  font-size: 1.4rem;
  color: var(--color-sky);
}

.footer__logo-text {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.footer__logo-text small {
  font-weight: 300;
  opacity: 0.7;
  font-size: 0.8em;
}

.footer__desc {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.6);
  line-height: var(--line-height-relaxed);
  max-width: 320px;
}

.footer__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: rgba(255,255,255,0.4);
  margin-bottom: var(--space-5);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__list a {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.7);
  transition: color var(--transition-fast);
}

.footer__list a:hover {
  color: var(--color-sky);
}

.footer__social-icons {
  display: flex;
  gap: var(--space-3);
}

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.7);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background: var(--color-blue);
  color: var(--color-white);
  transform: translateY(-2px);
}

.footer__bottom {
  padding-top: var(--space-8);
  text-align: center;
}

.footer__bottom p {
  font-size: var(--font-size-sm);
  color: rgba(255,255,255,0.4);
}

/* ========================================
   BACK TO TOP
   ======================================== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-blue);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: var(--z-backtop);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-blue-dark);
  transform: translateY(-3px);
  box-shadow: var(--shadow-xl);
}

/* ========================================
   TYPING CURSOR
   ======================================== */
.typing-cursor {
  display: inline-block;
  width: 3px;
  height: 1.1em;
  background: var(--color-sky);
  margin-left: 2px;
  vertical-align: text-bottom;
  animation: blink 0.8s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* ========================================
   BUTTON RIPPLE
   ======================================== */
.btn {
  position: relative;
  overflow: hidden;
}

.btn-ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255,255,255,0.35);
  transform: scale(0);
  animation: ripple 0.6s ease-out;
  pointer-events: none;
}

@keyframes ripple {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

/* ========================================
   PROJECTS EMPTY INLINE
   ======================================== */
.projects-empty-inline {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16) var(--space-8);
  background: var(--color-gray);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--color-gray-dark);
}

.projects-empty-inline p {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-6);
}

.projects-empty-inline .btn {
  display: inline-flex;
}

/* ========================================
   ANIMATIONS & REVEAL
   ======================================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Mobile nav overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10, 31, 68, 0.95);
  z-index: var(--z-overlay);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.nav-overlay.open {
  display: block;
  opacity: 1;
}

.nav-overlay__menu {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: var(--space-8);
}

.nav-overlay__link {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--color-white);
  transition: color var(--transition-fast);
}

.nav-overlay__link:hover {
  color: var(--color-sky);
}

/* Form success */
.form-success {
  display: none;
  text-align: center;
  padding: var(--space-10);
}

.form-success.show {
  display: block;
}

.form-success__icon {
  font-size: 3rem;
  margin-bottom: var(--space-4);
}

.form-success__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: var(--space-2);
}

.form-success__text {
  color: var(--color-gray-text);
}

/* ========================================
   MEDIA QUERIES - TABLET (max 1024px)
   ======================================== */
@media (max-width: 1024px) {
  .hero__container {
    grid-template-columns: 1fr;
    gap: var(--space-10);
    text-align: center;
  }

  .hero__content {
    max-width: 100%;
  }

  .hero__subtitle {
    max-width: 100%;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__visual {
    max-width: 480px;
    margin: 0 auto;
  }

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

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

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

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

  .methodology__timeline {
    grid-template-columns: repeat(4, 1fr);
  }

  .methodology__timeline::before {
    display: none;
  }

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

/* ========================================
   MEDIA QUERIES - MOBILE (max 768px)
   ======================================== */
@media (max-width: 768px) {
  :root {
    --container-padding: 1rem;
    --header-height: 3.75rem;
  }

  .section {
    padding: var(--space-12) 0;
  }

  .header__nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 31, 68, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }

  .header__nav.open {
    opacity: 1;
    visibility: visible;
  }

  .header__menu {
    flex-direction: column;
    gap: var(--space-6);
  }

  .header__menu-link {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-white);
    padding: var(--space-3) var(--space-6);
  }

  .header.scrolled .header__menu-link {
    color: var(--color-white);
  }

  .header__menu-link:hover,
  .header__menu-link.active {
    color: var(--color-sky) !important;
    background: rgba(255,255,255,0.08) !important;
  }

  .header__hamburger {
    display: flex;
    z-index: 10;
  }

  .header__actions .btn {
    display: none;
  }

  .header.scrolled .header__hamburger-line {
    background: var(--color-white);
  }

  .hero__title {
    font-size: var(--font-size-3xl);
  }

  .hero__subtitle {
    font-size: var(--font-size-base);
  }

  .hero__stats-container {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

  .hero__stat-number {
    font-size: var(--font-size-3xl);
  }

  .hero__dashboard {
    max-width: 100%;
  }

  .section__title {
    font-size: var(--font-size-2xl);
  }

  .section__desc {
    font-size: var(--font-size-base);
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .about__values {
    padding: var(--space-8);
  }

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

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

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

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

  .methodology__timeline {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }

  .methodology-step__number {
    width: 64px;
    height: 64px;
    font-size: var(--font-size-xl);
  }

  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

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

  .contact__form {
    padding: var(--space-6);
  }

  .cta {
    padding: var(--space-16) 0;
  }

  .cta__title {
    font-size: var(--font-size-3xl);
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .header__logo-text {
    font-size: var(--font-size-base);
  }

  .back-to-top {
    bottom: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
  }
}

/* ========================================
   MEDIA QUERIES - SMALL MOBILE (max 480px)
   ======================================== */
@media (max-width: 480px) {
  .hero__title {
    font-size: var(--font-size-2xl);
  }

  .hero__actions {
    flex-direction: column;
    width: 100%;
  }

  .hero__actions .btn {
    width: 100%;
    text-align: center;
  }

  .section__title {
    font-size: var(--font-size-xl);
  }

  .hero__stats-container {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .hero__stat-number {
    font-size: var(--font-size-2xl);
  }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
  .header,
  .preloader,
  .back-to-top,
  .cta {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 2rem 0;
    color: var(--color-navy);
    background: white;
  }

  .section {
    padding: 1.5rem 0;
    page-break-inside: avoid;
  }
}