/* FILE: styles.css */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
  /* Colors */
  --color-primary: #4ECDC4;
  --color-primary-dark: #45B7AA;
  --color-primary-light: #7FDDD7;
  --color-accent: #FF6B35;
  --color-accent-dark: #E55A2B;
  --color-text-dark: #2C3E50;
  --color-text-medium: #34495E;
  --color-text-light: #7F8C8D;
  --color-white: #FFFFFF;
  --color-gray-50: #F8F9FA;
  --color-gray-100: #F1F3F4;
  --color-gray-200: #E9ECEF;
  --color-gray-300: #DEE2E6;
  --color-gray-400: #CED4DA;
  --color-gray-500: #ADB5BD;
  --color-gray-600: #6C757D;
  --color-gray-700: #495057;
  --color-gray-800: #343A40;
  --color-gray-900: #212529;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-card: linear-gradient(135deg, rgba(78, 205, 196, 0.1) 0%, rgba(255, 255, 255, 0.9) 100%);
  
  /* Typography */
  --font-family-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 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;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 5rem;
  --space-5xl: 6rem;
  
  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--space-md);
  --border-radius-sm: 0.375rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* ===== RESET & BASE STYLES ===== */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--color-text-medium);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul,
ol {
  list-style: none;
}

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

/* ===== UTILITY CLASSES ===== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--space-5xl) 0;
}

.section--bg {
  background-color: var(--color-gray-50);
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-4xl);
}

.section__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-lg);
}

.section__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-light);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== BUTTON COMPONENTS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--border-radius-md);
  transition: all var(--transition-normal);
  cursor: pointer;
  text-decoration: none;
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--outline {
  background-color: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--outline:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--large {
  padding: 1rem 2rem;
  font-size: var(--font-size-base);
}

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

/* ===== HEADER & NAVIGATION ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: var(--z-fixed);
  border-bottom: 1px solid var(--color-gray-200);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--container-padding);
  min-height: 80px;
}

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

.nav__logo {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-md);
}

.nav__brand-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
  letter-spacing: 0.05em;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

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

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-medium);
  transition: color var(--transition-normal);
  letter-spacing: 0.05em;
}

.nav__link:hover,
.nav__link--active {
  color: var(--color-primary);
}

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

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  cursor: pointer;
}

.nav__toggle-line {
  width: 24px;
  height: 2px;
  background-color: var(--color-text-dark);
  transition: all var(--transition-normal);
}

/* ===== HERO SECTION ===== */
.hero {
  padding: calc(80px + var(--space-4xl)) 0 var(--space-5xl);
  background: var(--gradient-primary);
  position: relative;
  overflow: hidden;
}

.hero--page {
  padding: calc(80px + var(--space-3xl)) 0 var(--space-3xl);
  text-align: center;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.hero__content--center {
  grid-template-columns: 1fr;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: var(--space-lg);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-2xl);
}

.hero__cta {
  margin-bottom: var(--space-lg);
}

.hero__note {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
}

.hero__visual {
  position: relative;
}

.hero__mockup {
  position: relative;
  transform: perspective(1000px) rotateY(-15deg) rotateX(10deg);
}

.hero__mockup-image {
  width: 100%;
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
}

/* ===== FEATURE CARDS ===== */
.feature-card {
  position: absolute;
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  gap: var(--space-md);
  max-width: 280px;
  animation: float 3s ease-in-out infinite;
}

.feature-card--1 {
  top: 20%;
  left: -10%;
  animation-delay: 0s;
}

.feature-card--2 {
  bottom: 15%;
  right: -15%;
  animation-delay: 1.5s;
}

.feature-card__icon img {
  width: 24px;
  height: 24px;
}

.feature-card__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-xs);
}

.feature-card__subtitle {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.feature-card__text {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

/* ===== FEATURES SECTION ===== */
.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-2xl);
}

.feature {
  text-align: center;
  padding: var(--space-xl);
}

.feature__icon {
  margin: 0 auto var(--space-lg);
}

.feature__icon img {
  width: 60px;
  height: 60px;
  border-radius: var(--border-radius-lg);
}

.feature__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-md);
}

.feature__description {
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== CTA SECTION ===== */
.cta {
  background: var(--gradient-primary);
}

.cta__content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.cta__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

.cta__subtitle {
  font-size: var(--font-size-xl);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-2xl);
}

.cta__buttons {
  display: flex;
  gap: var(--space-lg);
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== FOOTER ===== */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer__content {
  display: grid;
  grid-template-columns: 2fr 3fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer__brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.footer__logo {
  width: 40px;
  height: 40px;
}

.footer__brand-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
}

.footer__description {
  color: var(--color-gray-400);
  max-width: 300px;
}

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

.footer__heading {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

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

.footer__link {
  color: var(--color-gray-400);
  transition: color var(--transition-normal);
}

.footer__link:hover {
  color: var(--color-primary);
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-gray-700);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer__copyright {
  color: var(--color-gray-500);
}

.footer__legal {
  display: flex;
  gap: var(--space-lg);
}

.footer__legal-link {
  color: var(--color-gray-500);
  transition: color var(--transition-normal);
}

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

/* ===== ABOUT PAGE STYLES ===== */
.mission {
  padding: var(--space-5xl) 0;
}

.mission__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.mission__description {
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-lg);
  line-height: 1.7;
}

.mission__img {
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-lg);
}

.values__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
}

.value {
  text-align: center;
  padding: var(--space-xl);
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.value__icon img {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-lg);
}

.value__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-md);
}

.value__description {
  color: var(--color-text-light);
  line-height: 1.7;
}

.team__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-2xl);
}

.team-member {
  text-align: center;
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-md);
}

.team-member__img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto var(--space-lg);
  object-fit: cover;
}

.team-member__name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-xs);
}

.team-member__role {
  font-size: var(--font-size-base);
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.team-member__bio {
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== SERVICES PAGE STYLES ===== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-2xl);
}

.service-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.service-card__icon {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.service-card__icon img {
  width: 80px;
  height: 80px;
}

.service-card__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-lg);
}

.service-card__description {
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.service-card__features {
  list-style: none;
  margin-bottom: var(--space-xl);
}

.service-card__features li {
  position: relative;
  padding-left: var(--space-lg);
  margin-bottom: var(--space-sm);
  color: var(--color-text-medium);
}

.service-card__features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: var(--font-weight-bold);
}

.process__steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
}

.process-step {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.process-step__number {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  color: var(--color-white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

.process-step__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-sm);
}

.process-step__description {
  color: var(--color-text-light);
  line-height: 1.7;
}

.tech-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-2xl);
}

.tech-category__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-lg);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.tech-tag {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

/* ===== PORTFOLIO PAGE STYLES ===== */
.portfolio-filter {
  padding: var(--space-xl) 0;
}

.filter-tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.filter-tab {
  padding: var(--space-sm) var(--space-lg);
  background: transparent;
  border: 2px solid var(--color-gray-300);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-medium);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.filter-tab:hover,
.filter-tab--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.portfolio__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-2xl);
}

.portfolio-item {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.portfolio-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.portfolio-item__image {
  position: relative;
  overflow: hidden;
}

.portfolio-item__img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.portfolio-item:hover .portfolio-item__img {
  transform: scale(1.05);
}

.portfolio-item__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(78, 205, 196, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.portfolio-item:hover .portfolio-item__overlay {
  opacity: 1;
}

.portfolio-item__view {
  background: var(--color-white);
  color: var(--color-primary);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--border-radius-md);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-normal);
}

.portfolio-item__view:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.portfolio-item__content {
  padding: var(--space-xl);
}

.portfolio-item__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-xs);
}

.portfolio-item__category {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-md);
}

.portfolio-item__description {
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.portfolio-item__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tech-badge {
  background: var(--color-gray-100);
  color: var(--color-text-medium);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.results__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-2xl);
}

.result-stat {
  text-align: center;
  background: var(--color-white);
  padding: var(--space-2xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.result-stat__number {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.result-stat__label {
  font-size: var(--font-size-base);
  color: var(--color-text-medium);
  font-weight: var(--font-weight-medium);
}

/* ===== BLOG PAGE STYLES ===== */
.featured-post {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  background: var(--color-white);
  border-radius: var(--border-radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.featured-post__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.featured-post__content {
  padding: var(--space-2xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-post__meta {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
}

.featured-post__category {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.featured-post__date,
.featured-post__read-time {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

.featured-post__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-lg);
  line-height: 1.3;
}

.featured-post__excerpt {
  color: var(--color-text-light);
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

.featured-post__author {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.featured-post__author-img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
}

.featured-post__author-name {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
}

.featured-post__author-role {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.category-filters {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.category-filter {
  padding: var(--space-sm) var(--space-lg);
  background: transparent;
  border: 2px solid var(--color-gray-300);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-medium);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.category-filter:hover,
.category-filter--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-white);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-2xl);
}

.blog-post {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.blog-post:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.blog-post__img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.blog-post__content {
  padding: var(--space-xl);
}

.blog-post__meta {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}

.blog-post__category {
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
}

.blog-post__date {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

.blog-post__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-md);
  line-height: 1.4;
}

.blog-post__excerpt {
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

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

.blog-post__author {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.blog-post__author-img {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  object-fit: cover;
}

.blog-post__author-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-medium);
}

.blog-post__read-time {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.blog-load-more {
  text-align: center;
  margin-top: var(--space-3xl);
}

.newsletter {
  background: var(--gradient-primary);
}

.newsletter__content {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.newsletter__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

.newsletter__subtitle {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-2xl);
}

.newsletter__input-group {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.newsletter__input {
  flex: 1;
  padding: var(--space-md);
  border: none;
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
}

.newsletter__note {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
}

/* ===== CONTACT PAGE STYLES ===== */
.contact__content {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-4xl);
}

.contact__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-lg);
}

.contact__subtitle {
  color: var(--color-text-light);
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
}

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.form__group {
  margin-bottom: var(--space-lg);
}

.form__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-dark);
  margin-bottom: var(--space-sm);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: var(--space-md);
  border: 2px solid var(--color-gray-300);
  border-radius: var(--border-radius-md);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-normal);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

.form__checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.form__checkbox-input {
  margin-top: 2px;
}

.form__checkbox-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-medium);
  line-height: 1.5;
}

.contact__info {
  background: var(--color-gray-50);
  border-radius: var(--border-radius-xl);
  padding: var(--space-2xl);
}

.contact__info-title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-lg);
}

.contact__info-text {
  color: var(--color-text-light);
  margin-bottom: var(--space-2xl);
  line-height: 1.7;
}

.contact__details {
  margin-bottom: var(--space-2xl);
}

.contact__detail {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.contact__detail-icon img {
  width: 24px;
  height: 24px;
}

.contact__detail-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-xs);
}

.contact__detail-text {
  color: var(--color-text-medium);
  line-height: 1.6;
}

.contact__social-title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-md);
}

.contact__social-links {
  display: flex;
  gap: var(--space-md);
}

.contact__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  border-radius: 50%;
  transition: all var(--transition-normal);
}

.contact__social-link:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.contact__social-link img {
  width: 20px;
  height: 20px;
}

/* FAQ Styles */
.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  border-bottom: 1px solid var(--color-gray-200);
  margin-bottom: var(--space-md);
}

.faq__question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-lg) 0;
  background: none;
  border: none;
  text-align: left;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-dark);
  cursor: pointer;
  transition: color var(--transition-normal);
}

.faq__question:hover {
  color: var(--color-primary);
}

.faq__icon {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  transition: transform var(--transition-normal);
}

.faq__question.active .faq__icon {
  transform: rotate(45deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq__answer.active {
  max-height: 200px;
}

.faq__answer p {
  padding-bottom: var(--space-lg);
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== MODAL STYLES ===== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal.active {
  opacity: 1;
  visibility: visible;
}

.modal__content {
  background: var(--color-white);
  border-radius: var(--border-radius-xl);
  max-width: 90vw;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
}

.modal__close {
  position: absolute;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 40px;
  height: 40px;
  background: var(--color-gray-100);
  border: none;
  border-radius: 50%;
  font-size: var(--font-size-xl);
  color: var(--color-text-dark);
  cursor: pointer;
  z-index: 1;
}

.modal__body {
  padding: var(--space-3xl);
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 1024px) {
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero__visual {
    order: -1;
  }
  
  .hero__mockup {
    transform: none;
  }
  
  .feature-card--1,
  .feature-card--2 {
    position: static;
    max-width: none;
    margin-bottom: var(--space-lg);
  }
  
  .mission__content {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  
  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }
  
  .footer__links {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .featured-post {
    grid-template-columns: 1fr;
  }
  
  .contact__content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --container-padding: var(--space-lg);
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.75rem;
  }
  
  .nav__menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: var(--space-xl);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
  }
  
  .nav__menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav__list {
    flex-direction: column;
    gap: var(--space-lg);
  }
  
  .nav__buttons {
    margin-top: var(--space-lg);
  }
  
  .nav__toggle {
    display: flex;
  }
  
  .nav__toggle.active .nav__toggle-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .nav__toggle.active .nav__toggle-line:nth-child(2) {
    opacity: 0;
  }
  
  .nav__toggle.active .nav__toggle-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .section {
    padding: var(--space-3xl) 0;
  }
  
  .hero {
    padding: calc(80px + var(--space-2xl)) 0 var(--space-3xl);
  }
  
  .hero--page {
    padding: calc(80px + var(--space-xl)) 0 var(--space-xl);
  }
  
  .cta__buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .footer__links {
    grid-template-columns: 1fr;
  }
  
  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .form__row {
    grid-template-columns: 1fr;
  }
  
  .newsletter__input-group {
    flex-direction: column;
  }
  
  .filter-tabs,
  .category-filters {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  :root {
    --space-5xl: 3rem;
    --space-4xl: 2.5rem;
    --space-3xl: 2rem;
  }
  
  .container {
    padding: 0 var(--space-md);
  }
  
  .hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .section__title {
    font-size: var(--font-size-3xl);
  }
  
  .features__grid,
  .services__grid,
  .portfolio__grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }
  
  .process__steps {
    grid-template-columns: 1fr;
  }
  
  .process-step {
    flex-direction: column;
    text-align: center;
  }
  
  .tech-categories {
    grid-template-columns: 1fr;
  }
  
  .results__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .header,
  .nav__toggle,
  .cta,
  .footer {
    display: none;
  }
  
  .hero {
    padding-top: var(--space-xl);
  }
  
  * {
    background: transparent !important;
    color: black !important;
    box-shadow: none !important;
  }
}

/* ===== FOCUS STYLES ===== */
button:focus,
a:focus,
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== SELECTION STYLES ===== */
::selection {
  background: var(--color-primary);
  color: var(--color-white);
}

::-moz-selection {
  background: var(--color-primary);
  color: var(--color-white);
}