/* ===== CSS VARIABLES ===== */
:root {
  /* Colors - Violet/Purple Dark Theme */
  --color-bg-primary: #0d0b1a;
  --color-bg-secondary: #151228;
  --color-bg-tertiary: #1c1835;
  --color-bg-card: #1e1a36;
  --color-bg-card-hover: #262045;
  --color-accent: #8b5cf6;
  --color-accent-light: #a78bfa;
  --color-accent-dark: #7c3aed;
  --color-accent-glow: rgba(139, 92, 246, 0.3);
  --color-text-primary: #f1f0f7;
  --color-text-secondary: #a8a3c0;
  --color-text-muted: #6b6589;
  --color-border: rgba(139, 92, 246, 0.2);
  --color-border-hover: rgba(139, 92, 246, 0.5);
  --color-success: #22c55e;
  --color-error: #ef4444;
  --color-white: #ffffff;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Poppins', 'Inter', 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: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--color-accent-glow);

  /* Layout */
  --max-width: 1200px;
  --navbar-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 var(--spacing-md) 0;
}

p {
  margin: 0 0 var(--spacing-md) 0;
}

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

a:hover {
  color: var(--color-accent);
}

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

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ===== SCROLL ANIMATIONS ===== */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.animate-on-scroll.slide-left {
  transform: translateX(-30px);
}

.animate-on-scroll.slide-left.visible {
  transform: translateX(0);
}

.animate-on-scroll.slide-right {
  transform: translateX(30px);
}

.animate-on-scroll.slide-right.visible {
  transform: translateX(0);
}

.animate-on-scroll.scale-in {
  transform: scale(0.9);
}

.animate-on-scroll.scale-in.visible {
  transform: scale(1);
}

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--navbar-height);
  z-index: 1000;
  background: rgba(13, 11, 26, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

.navbar.scrolled {
  background: rgba(13, 11, 26, 0.95);
  box-shadow: var(--shadow-md);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.navbar__logo {
  flex: 0 0 20%;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.navbar__logo-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 8px;
  object-fit: contain;
}

.navbar__logo-text {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  white-space: nowrap;
}

.navbar__logo-text span {
  color: var(--color-accent);
}

.navbar__nav {
  flex: 0 0 80%;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--spacing-xl);
}

.navbar__links {
  display: flex;
  list-style: none;
  gap: var(--spacing-xl);
  margin: 0;
  padding: 0;
}

.navbar__link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  position: relative;
  transition: color var(--transition-fast);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.navbar__link:hover,
.navbar__link.active {
  color: var(--color-accent-light);
}

.navbar__link:hover::after,
.navbar__link.active::after {
  width: 100%;
}

.navbar__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 10px 24px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: background var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}

.navbar__cta:hover {
  background: var(--color-accent-dark);
  box-shadow: var(--shadow-glow);
  color: var(--color-white);
  transform: translateY(-1px);
}

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}

.navbar__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text-primary);
  transition: transform var(--transition-base), opacity 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);
}

/* Mobile menu */
.navbar__mobile-menu {
  display: none;
  position: absolute;
  top: var(--navbar-height);
  left: 0;
  width: 100%;
  background: rgba(13, 11, 26, 0.98);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-xl) var(--spacing-lg);
  flex-direction: column;
  gap: var(--spacing-lg);
  transform: translateY(-10px);
  opacity: 0;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.navbar__mobile-menu.open {
  display: flex;
  transform: translateY(0);
  opacity: 1;
}

.navbar__mobile-menu a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
  transition: color var(--transition-fast);
}

.navbar__mobile-menu a:hover {
  color: var(--color-accent-light);
}

/* ===== HERO SECTION ===== */
.hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__video-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

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

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(13, 11, 26, 0.7) 0%,
    rgba(13, 11, 26, 0.5) 40%,
    rgba(13, 11, 26, 0.7) 100%
  );
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: var(--spacing-xl);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid var(--color-border);
  color: var(--color-accent-light);
  font-size: var(--font-size-sm);
  font-weight: 500;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-xl);
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 14px 32px;
  font-size: var(--font-size-base);
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

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

.btn--outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 2px solid var(--color-border-hover);
}

.btn--outline:hover {
  background: rgba(139, 92, 246, 0.1);
  border-color: var(--color-accent);
  color: var(--color-accent-light);
  transform: translateY(-2px);
}

/* ===== SECTION COMMON ===== */
.section {
  padding: var(--spacing-4xl) 0;
}

.section--alt {
  background: var(--color-bg-secondary);
}

.section__header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--spacing-3xl);
}

.section__label {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-accent);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: var(--spacing-md);
}

.section__title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
}

.section__description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-lg);
  line-height: 1.7;
}

/* ===== SERVICES SECTION ===== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

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

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

.service-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 92, 246, 0.12);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
  color: var(--color-accent);
}

.service-card__icon svg {
  width: 28px;
  height: 28px;
}

.service-card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.service-card__description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

/* ===== ABOUT SECTION ===== */
.about__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
}

.about-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all var(--transition-base);
}

.about-card:hover {
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.about-card__icon {
  width: 72px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 92, 246, 0.12);
  border-radius: var(--radius-xl);
  margin: 0 auto var(--spacing-lg);
  color: var(--color-accent);
}

.about-card__icon svg {
  width: 36px;
  height: 36px;
}

.about-card__title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
}

.about-card__description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-base);
  line-height: 1.7;
}

/* ===== FAQ SECTION ===== */
.faq__list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-base);
}

.faq-item.active {
  border-color: var(--color-border-hover);
}

.faq-item__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  font-weight: 600;
  font-family: var(--font-primary);
  cursor: pointer;
  text-align: left;
  transition: color var(--transition-fast);
}

.faq-item__question:hover {
  color: var(--color-accent-light);
}

.faq-item__icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-accent);
  transition: transform var(--transition-base);
}

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

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item__answer-inner {
  padding: 0 var(--spacing-xl) var(--spacing-lg);
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.faq-item.active .faq-item__answer {
  max-height: 500px;
}

/* ===== CONTACT SECTION ===== */
.contact__wrapper {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-3xl);
  align-items: start;
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

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

.contact__info-text {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

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

.contact__detail-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(139, 92, 246, 0.12);
  border-radius: var(--radius-md);
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact__detail-icon svg {
  width: 20px;
  height: 20px;
}

.contact__detail-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.contact__detail-value {
  color: var(--color-text-primary);
  font-weight: 500;
}

.contact__form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
}

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

.form__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-secondary);
}

.form__label .required {
  color: var(--color-accent);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 12px 16px;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form__input:focus,
.form__textarea:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow);
}

.form__input.error,
.form__textarea.error {
  border-color: var(--color-error);
}

.form__input.success,
.form__textarea.success {
  border-color: var(--color-success);
}

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

.form__error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: 4px;
  min-height: 18px;
}

.form__submit {
  width: 100%;
  padding: 14px 32px;
  background: var(--color-accent);
  color: var(--color-white);
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
}

.form__submit:hover {
  background: var(--color-accent-dark);
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

.form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.form__success-message {
  display: none;
  text-align: center;
  padding: var(--spacing-2xl);
}

.form__success-message.show {
  display: block;
}

.form__success-message svg {
  width: 64px;
  height: 64px;
  color: var(--color-success);
  margin-bottom: var(--spacing-md);
}

.form__success-message h3 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-sm);
}

.form__success-message p {
  color: var(--color-text-secondary);
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.footer__logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 7px;
  object-fit: contain;
}

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

.footer__logo-text span {
  color: var(--color-accent);
}

.footer__brand-description {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

.footer__links-group {
  display: flex;
  gap: var(--spacing-3xl);
}

.footer__column h4 {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.footer__column ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer__column a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__column a:hover {
  color: var(--color-accent-light);
}

.footer__social {
  display: flex;
  gap: var(--spacing-md);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

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

.footer__social-link svg {
  width: 18px;
  height: 18px;
}

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

.footer__copyright {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
}

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

.footer__legal a {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  transition: color var(--transition-fast);
}

.footer__legal a:hover {
  color: var(--color-accent-light);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .services__grid,
  .about__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  :root {
    --font-size-5xl: 2.5rem;
    --font-size-4xl: 2rem;
    --font-size-3xl: 1.5rem;
  }

  .navbar {
    position: static;
  }

  .navbar__nav {
    display: none;
  }

  .navbar__hamburger {
    display: flex;
  }

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

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

  .hero {
    min-height: 90vh;
  }

  .hero__title {
    font-size: var(--font-size-4xl);
  }

  .footer__top {
    flex-direction: column;
  }

  .footer__links-group {
    gap: var(--spacing-2xl);
  }

  .footer__bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .footer__links-group {
    flex-direction: column;
    gap: var(--spacing-xl);
  }
}