/* ============================================
   M-Link — Software Development Agency
   Modern, Clean, Professional Website
   ============================================ */

/* ============ CSS VARIABLES ============ */
:root {
  /* Colors - Light */
  --color-primary: #2563eb;
  --color-primary-light: #3b82f6;
  --color-primary-dark: #1d4ed8;
  --color-primary-alpha: rgba(37, 99, 235, 0.1);
  --color-primary-alpha-2: rgba(37, 99, 235, 0.06);

  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #f8fafc;
  --bg-navbar: rgba(255, 255, 255, 0.85);
  --bg-code: #1e293b;
  --bg-input: #ffffff;

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #94a3b8;
  --text-on-primary: #ffffff;

  --border-color: #e2e8f0;
  --border-color-light: #f1f5f9;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.06), 0 4px 6px -4px rgba(0, 0, 0, 0.06);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.06);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* Spacing */
  --section-padding: 120px;
  --container-max: 1200px;
  --navbar-height: 84px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

/* ============ DARK THEME ============ */
[data-theme="dark"] {
  --bg-primary: #0b1121;
  --bg-secondary: #0f172a;
  --bg-tertiary: #1e293b;
  --bg-card: #1e293b;
  --bg-card-hover: #263449;
  --bg-navbar: rgba(11, 17, 33, 0.88);
  --bg-code: #0f172a;
  --bg-input: #1e293b;

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;

  --border-color: #1e293b;
  --border-color-light: #1a2436;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.2);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-height);
}

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

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

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

ul {
  list-style: none;
}

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

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

/* ============ UTILITIES ============ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section__header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.section__badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-alpha);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.section__title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  cursor: pointer;
  white-space: nowrap;
  border: 2px solid transparent;
}

.btn--sm {
  padding: 0 20px;
  height: 38px;
  font-size: 0.875rem;
}

.btn--md {
  padding: 10px 24px;
  font-size: 0.9375rem;
}

.btn--lg {
  padding: 14px 32px;
  font-size: 1rem;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--text-on-primary);
  border-color: var(--color-primary);
}

.btn--primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.35);
}

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

.btn--outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

/* ============ NAVBAR ============ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background: var(--bg-navbar);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-base), border-color var(--transition-base);
}

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

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  flex-shrink: 0;
}

.navbar__logo img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.navbar__links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

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

.navbar__links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
  border-radius: 1px;
}

.navbar__links a:hover::after {
  width: 100%;
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Language Switcher */
.lang-switcher {
  position: relative;
}

.lang-switcher__btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
  height: 38px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  border: 1px solid var(--border-color);
}

.lang-switcher__btn:hover {
  color: var(--text-primary);
  border-color: var(--color-primary);
}

.lang-switcher__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 6px;
  min-width: 130px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-base);
  z-index: 10;
}

.lang-switcher__dropdown.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.lang-option:hover,
.lang-option.active {
  background: var(--color-primary-alpha);
  color: var(--color-primary);
}

/* Theme toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  border: 1px solid var(--border-color);
}

.theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

[data-theme="dark"] .icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="light"] .icon-sun,
:root:not([data-theme="dark"]) .icon-sun { display: none; }
[data-theme="light"] .icon-moon,
:root:not([data-theme="dark"]) .icon-moon { display: block; }

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  padding: 8px;
}

.navbar__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

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

.navbar__hamburger.active span:nth-child(2) {
  opacity: 0;
}

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

.navbar__cta {
  flex-shrink: 0;
}

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

.hero__bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border-color-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-color-light) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.5;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  padding: 60px 24px;
}

.hero__badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-alpha);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
  animation: fadeInUp 0.6s ease forwards;
}

.hero__title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  animation: fadeInUp 0.6s 0.1s ease both;
}

.hero__subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 540px;
  animation: fadeInUp 0.6s 0.2s ease both;
}

.hero__buttons {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s 0.3s ease both;
}

.hero__stats {
  display: flex;
  gap: 48px;
  animation: fadeInUp 0.6s 0.4s ease both;
}

.hero__stat {
  display: flex;
  flex-direction: column;
}

.hero__stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.85rem;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* Hero illustration */
.hero__illustration {
  display: flex;
  justify-content: center;
  animation: fadeInUp 0.8s 0.2s ease both;
}

.hero__visual {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.hero__code-window {
  background: var(--bg-code);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.code-window__header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 18px;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

.dot--red { background: #ff5f57; }
.dot--yellow { background: #ffbd2e; }
.dot--green { background: #28c840; }

.code-window__title {
  margin-left: auto;
  font-size: 0.75rem;
  color: #64748b;
  font-family: var(--font-mono);
}

.code-window__body {
  padding: 24px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.8;
  overflow-x: auto;
}

.code-window__body pre {
  margin: 0;
}

.code-window__body code {
  color: #e2e8f0;
}

.code-keyword { color: #c084fc; }
.code-var { color: #f1f5f9; }
.code-prop { color: #67e8f9; }
.code-string { color: #86efac; }
.code-method { color: #fbbf24; }
.code-param { color: #fb923c; }

/* Floating elements */
.hero__floating {
  position: absolute;
  width: 52px;
  height: 52px;
  background: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
  animation: float 6s ease-in-out infinite;
}

.hero__floating--1 {
  top: -10px;
  right: -10px;
  animation-delay: 0s;
}

.hero__floating--2 {
  bottom: 60px;
  left: -20px;
  animation-delay: 2s;
  background: #8b5cf6;
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.3);
}

.hero__floating--3 {
  top: 40%;
  right: -30px;
  animation-delay: 4s;
  background: #06b6d4;
  box-shadow: 0 8px 24px rgba(6, 182, 212, 0.3);
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-tertiary);
  animation: bounce 2s infinite;
}

/* ============ ABOUT ============ */
.about {
  background: var(--bg-secondary);
}

.about__values {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.value-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: all var(--transition-base);
}

.value-card:hover {
  border-color: var(--color-primary-alpha);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.value-card__icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-primary-alpha);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.value-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.value-card__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============ SERVICES ============ */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  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-primary), #8b5cf6);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  border-color: transparent;
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

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

.service-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-primary-alpha);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.service-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-card__text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
}

.service-card__arrow {
  display: inline-flex;
  align-items: center;
  color: var(--color-primary);
  opacity: 0;
  transform: translateX(-8px);
  transition: all var(--transition-base);
}

.service-card:hover .service-card__arrow {
  opacity: 1;
  transform: translateX(0);
}

/* ============ PROCESS ============ */
.process {
  background: var(--bg-secondary);
}

.process__timeline {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 16px;
  position: relative;
}

.process__timeline::before {
  content: '';
  position: absolute;
  top: 60px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), #8b5cf6, #06b6d4);
  border-radius: 1px;
  opacity: 0.3;
}

.process__step {
  text-align: center;
  position: relative;
}

.process__step-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}

.process__step-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary-alpha);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  transition: all var(--transition-base);
  border: 2px solid transparent;
  position: relative;
  z-index: 1;
}

.process__step:hover .process__step-icon {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
  transform: scale(1.1);
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.35);
}

.process__step-title {
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 6px;
  line-height: 1.3;
}

.process__step-text {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ============ TECHNOLOGIES ============ */
.tech__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tech-category {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-base);
}

.tech-category:hover {
  border-color: var(--color-primary-alpha);
  box-shadow: var(--shadow-md);
}

.tech-category--wide {
  grid-column: span 2;
}

.tech-category__header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  color: var(--color-primary);
}

.tech-category__header h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
}

.tech-category__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-tag {
  display: inline-block;
  padding: 6px 14px;
  background: var(--color-primary-alpha-2);
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 500;
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.tech-tag:hover {
  background: var(--color-primary-alpha);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.tech-tag--sm {
  padding: 4px 10px;
  font-size: 0.75rem;
}

/* ============ WHY CHOOSE US ============ */
.why-us {
  background: var(--bg-secondary);
}

.why-us__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.why-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition: all var(--transition-base);
}

.why-card:hover {
  border-color: transparent;
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.why-card__icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-primary-alpha);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.why-card__title {
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.why-card__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============ PORTFOLIO ============ */
.portfolio__slider-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  gap: 16px;
}

.portfolio__slider {
  display: flex;
  gap: 24px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  flex: 1;
  cursor: grab;
}

.portfolio__slider:active {
  cursor: grabbing;
}

.portfolio__slider::-webkit-scrollbar {
  display: none;
}

.portfolio__arrow {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
  z-index: 1;
}

.portfolio__arrow:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-alpha);
}

.portfolio__arrow:disabled {
  opacity: 0.3;
  pointer-events: none;
}

.portfolio-card {
  flex: 0 0 calc((100% - 48px) / 3);
  scroll-snap-align: start;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.portfolio-card:hover {
  border-color: transparent;
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.portfolio-card__image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--bg-tertiary);
}

.portfolio-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.portfolio-card__placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-tertiary);
  background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--color-primary-alpha-2) 100%);
}

.portfolio-card__placeholder span {
  font-size: 0.85rem;
  font-weight: 500;
}

.portfolio-card__content {
  padding: 24px;
}

.portfolio-card__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.portfolio-card__desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.portfolio-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

/* ============ CTA ============ */
.cta {
  padding: 80px 0;
}

.cta__inner {
  background: linear-gradient(135deg, var(--color-primary) 0%, #4f46e5 50%, #7c3aed 100%);
  border-radius: var(--radius-xl);
  padding: 72px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta__content {
  position: relative;
  z-index: 2;
}

.cta__title {
  font-size: 2.5rem;
  font-weight: 800;
  color: white;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta__text {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

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

.cta .btn--primary:hover {
  background: #f1f5f9;
  border-color: #f1f5f9;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.cta__decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.cta__circle {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.cta__circle--1 {
  width: 300px;
  height: 300px;
  top: -100px;
  right: -80px;
}

.cta__circle--2 {
  width: 200px;
  height: 200px;
  bottom: -60px;
  left: -40px;
}

.cta__circle--3 {
  width: 120px;
  height: 120px;
  top: 50%;
  left: 15%;
  background: rgba(255, 255, 255, 0.05);
}

/* ============ CONTACT ============ */
.contact {
  background: var(--bg-secondary);
}

.contact__wrapper {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: start;
}

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

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group--full {
  grid-column: span 2;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-input);
  color: var(--text-primary);
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-alpha);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  grid-column: span 2;
  justify-self: start;
}

/* Contact info */
.contact__info {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact__info-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.contact__info-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-primary-alpha);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact__info-card h4 {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 2px;
}

.contact__info-card a {
  font-size: 0.95rem;
  color: var(--text-primary);
  font-weight: 500;
}

.contact__info-card a:hover {
  color: var(--color-primary);
}

.contact__socials {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.contact__socials h4 {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.contact__social-links {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--color-primary-alpha);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

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

.social-link--disabled {
  opacity: 0.35;
  cursor: not-allowed;
  pointer-events: none;
}

/* ============ FOOTER ============ */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 64px 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.footer__brand-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.footer__col-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.footer__col ul li {
  margin-bottom: 10px;
}

.footer__col ul li a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer__col ul li a:hover {
  color: var(--color-primary);
}

.footer__bottom {
  border-top: 1px solid var(--border-color);
  padding: 24px 0;
  text-align: center;
}

.footer__bottom p {
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

/* ============ ANIMATIONS ============ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-8px);
  }
  60% {
    transform: translateX(-50%) translateY(-4px);
  }
}

/* Scroll-triggered animation */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }

  .section__title {
    font-size: 2rem;
  }

  .hero__inner {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
    padding: 40px 24px;
  }

  .hero__title {
    font-size: 2.75rem;
  }

  .hero__subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__buttons {
    justify-content: center;
  }

  .hero__stats {
    justify-content: center;
  }

  .hero__illustration {
    order: -1;
  }

  .hero__visual {
    max-width: 420px;
  }

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

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

  .process__timeline {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .process__timeline::before {
    display: none;
  }

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

  .portfolio-card {
    flex: 0 0 calc((100% - 24px) / 2);
  }

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

  .footer__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 64px;
    --navbar-height: 64px;
  }

  .navbar__links {
    display: none;
    position: fixed;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    bottom: 0;
    height: calc(100vh - var(--navbar-height));
    background: var(--bg-card);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 24px;
    z-index: 999;
  }

  .navbar__links.active {
    display: flex;
  }

  .navbar__links a {
    font-size: 1.2rem;
  }

  .navbar__hamburger {
    display: flex;
  }

  .navbar__cta {
    display: none;
  }

  .section__title {
    font-size: 1.75rem;
  }

  .section__header {
    margin-bottom: 40px;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__subtitle {
    font-size: 1rem;
  }

  .hero__stats {
    gap: 28px;
  }

  .hero__stat-number {
    font-size: 1.5rem;
  }

  .code-window__body {
    font-size: 0.75rem;
    padding: 16px;
  }

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

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

  .process__timeline {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

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

  .tech-category--wide {
    grid-column: span 1;
  }

  .why-us__grid {
    grid-template-columns: 1fr;
  }

  .portfolio-card {
    flex: 0 0 100%;
  }

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

  .form-group--full {
    grid-column: span 1;
  }

  .form-submit {
    grid-column: span 1;
    width: 100%;
  }

  .cta__title {
    font-size: 1.75rem;
  }

  .cta__inner {
    padding: 48px 24px;
  }

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .hero__title {
    font-size: 1.65rem;
  }

  .hero__buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__stats {
    flex-direction: column;
    align-items: center;
    gap: 16px;
  }

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

  .lang-switcher__btn span {
    display: none;
  }
}