/* ===== VARIABLES ===== */
:root {
  /* Colors */
  --color-primary: #3B82F6;
  --color-secondary: #8B5CF6;
  --color-tertiary: #06B6D4;
  --color-dark: #0F172A;
  --color-dark-light: #1E293B;
  --color-dark-lighter: #334155;
  --color-white: #FFFFFF;
  --color-gray-light: #F1F5F9;
  --color-gray: #64748B;
  --color-gray-dark: #475569;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  --gradient-secondary: linear-gradient(135deg, var(--color-secondary), var(--color-tertiary));
  --gradient-hero: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-light) 100%);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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-size-6xl: 3.75rem;
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-base: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 2.5rem;
  --spacing-3xl: 3rem;
  --spacing-4xl: 4rem;
  --spacing-5xl: 5rem;
  --spacing-6xl: 6rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-base: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-base: 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: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

/* ===== RESET ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--color-white);
  background-color: var(--color-dark);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

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

/* ===== UTILITIES ===== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-base);
}

@media screen and (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-md);
}

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

.btn--secondary {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  background: var(--color-primary);
  transform: translateY(-2px);
}

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

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

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.nav__logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav__menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  height: 100vh;
  background: var(--color-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: right var(--transition-base);
  z-index: var(--z-modal);
}

.nav__menu.show-menu {
  right: 0;
}

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

.nav__link {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
  transition: color var(--transition-base);
}

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

.nav__close {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  font-size: var(--font-size-2xl);
  cursor: pointer;
  color: var(--color-white);
}

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

.nav__toggle {
  font-size: var(--font-size-xl);
  cursor: pointer;
  color: var(--color-white);
}

@media screen and (min-width: 768px) {
  .nav__menu {
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    flex-direction: row;
  }
  
  .nav__list {
    flex-direction: row;
    gap: var(--spacing-2xl);
  }
  
  .nav__link {
    font-size: var(--font-size-base);
  }
  
  .nav__close,
  .nav__toggle {
    display: none;
  }
}

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

.hero__container {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
  padding-top: var(--spacing-5xl);
  padding-bottom: var(--spacing-4xl);
}

.hero__content {
  text-align: center;
  z-index: 2;
}

.hero__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  line-height: 1.1;
  margin-bottom: var(--spacing-lg);
}

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

.hero__description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-3xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-base);
  align-items: center;
}

.hero__visual {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero__particles {
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 80%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 40% 40%, rgba(6, 182, 212, 0.1) 0%, transparent 50%);
  animation: float 6s ease-in-out infinite;
}

.hero__shapes {
  position: absolute;
  width: 100%;
  height: 100%;
}

.shape {
  position: absolute;
  border-radius: var(--radius-full);
  opacity: 0.1;
  animation: float 8s ease-in-out infinite;
}

.shape--1 {
  width: 200px;
  height: 200px;
  background: var(--gradient-primary);
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.shape--2 {
  width: 150px;
  height: 150px;
  background: var(--gradient-secondary);
  top: 60%;
  right: 15%;
  animation-delay: 2s;
}

.shape--3 {
  width: 100px;
  height: 100px;
  background: var(--color-tertiary);
  bottom: 20%;
  left: 20%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
  }
}

@media screen and (min-width: 768px) {
  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero__title {
    font-size: var(--font-size-6xl);
  }
  
  .hero__actions {
    flex-direction: row;
    justify-content: center;
  }
}

/* ===== SERVICES ===== */
.service {
  padding: var(--spacing-6xl) 0;
  position: relative;
}

.service:nth-child(even) {
  background: rgba(30, 41, 59, 0.3);
}

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

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

.service__text {
  order: 2;
}

.service__visual {
  order: 1;
}

.service--reverse .service__text {
  order: 1;
}

.service--reverse .service__visual {
  order: 2;
}

.service__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.service__description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.7;
}

.service__features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-base);
}

.service__feature {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-base);
  color: var(--color-gray-light);
}

.service__feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  flex-shrink: 0;
}

.service__image {
  position: relative;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background: var(--gradient-primary);
  padding: var(--spacing-xs);
}

.service__img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  transition: transform var(--transition-slow);
}

.service__image:hover .service__img {
  transform: scale(1.05);
}

@media screen and (min-width: 768px) {
  .service__content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-5xl);
  }
  
  .service__text,
  .service__visual {
    order: unset;
  }
  
  .service--reverse .service__content {
    direction: rtl;
  }
  
  .service--reverse .service__text,
  .service--reverse .service__visual {
    direction: ltr;
  }
}

/* ===== BENEFITS ===== */
.benefits {
  padding: var(--spacing-6xl) 0;
  background: var(--color-dark-light);
}

.benefits__header {
  text-align: center;
  margin-bottom: var(--spacing-5xl);
}

.benefits__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.benefits__description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-light);
  max-width: 600px;
  margin: 0 auto;
}

.benefits__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

.benefit-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
}

.benefit-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-primary);
}

.benefit-card__icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
  display: block;
}

.benefit-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-base);
  color: var(--color-white);
}

.benefit-card__description {
  color: var(--color-gray-light);
  line-height: 1.6;
}

@media screen and (min-width: 768px) {
  .benefits__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media screen and (min-width: 1024px) {
  .benefits__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== CONTACT ===== */
.contact {
  padding: var(--spacing-6xl) 0;
  background: var(--gradient-hero);
}

.contact__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-4xl);
  align-items: start;
}

.contact__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-lg);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.contact__description {
  font-size: var(--font-size-lg);
  color: var(--color-gray-light);
  margin-bottom: var(--spacing-3xl);
  line-height: 1.7;
}

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

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

.contact__detail-icon {
  font-size: var(--font-size-2xl);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  flex-shrink: 0;
}

.contact__detail-info h4 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
  color: var(--color-white);
}

.contact__detail-info p {
  color: var(--color-gray-light);
}

.contact__form-container {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-3xl);
}

.contact__form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

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

.form__input {
  padding: var(--spacing-base) var(--spacing-lg);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  color: var(--color-white);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

.form__input::placeholder {
  color: var(--color-gray);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

@media screen and (min-width: 768px) {
  .contact__content {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-5xl);
  }
}

/* ===== FOOTER ===== */
.footer {
  background: var(--color-dark);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer__content {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer__logo {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-base);
}

.footer__description {
  color: var(--color-gray-light);
  line-height: 1.6;
}

.footer__links {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
}

.footer__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-base);
  color: var(--color-white);
}

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

.footer__link {
  color: var(--color-gray-light);
  transition: color var(--transition-base);
}

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

.footer__bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer__copy {
  color: var(--color-gray);
  font-size: var(--font-size-sm);
}

@media screen and (min-width: 768px) {
  .footer__content {
    grid-template-columns: 2fr 1fr;
  }
  
  .footer__links {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Animation classes */
.animate-fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fade-in-left {
  animation: fadeInLeft 0.6s ease-out forwards;
}

.animate-fade-in-right {
  animation: fadeInRight 0.6s ease-out forwards;
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

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

/* ===== RESPONSIVE DESIGN ===== */
@media screen and (max-width: 767px) {
  .hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .service__title,
  .benefits__title,
  .contact__title {
    font-size: var(--font-size-2xl);
  }
  
  .hero__actions {
    width: 100%;
  }
  
  .btn--large {
    width: 100%;
  }
}