/* CSS Custom Properties */
:root {
  /* Colors */
  --color-primary: #ff6b35;
  --color-primary-dark: #e55a2e;
  --color-secondary: #ffd700;
  --color-accent: #ff8c42;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-bg: #ffffff;
  --color-bg-light: #f8f9fa;
  --color-bg-dark: #2c3e50;
  --color-border: #e1e8ed;
  --color-shadow: rgba(0, 0, 0, 0.1);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  
  /* Typography */
  --font-family: -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;
  
  /* Container */
  --container-max-width: 1200px;
  --container-padding: var(--spacing-sm);
  
  /* Border Radius */
  --border-radius: 0.375rem;
  --border-radius-lg: 0.75rem;
  --border-radius-full: 9999px;
  
  /* Transitions */
  --transition: all 0.3s ease;
}

/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

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

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

/* Layout Components */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.image-rounded {
  border-radius: var(--border-radius-lg);
}

/* Header */
.header {
  background: var(--color-bg);
  box-shadow: 0 2px 10px var(--color-shadow);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: var(--transition);
}

.header__container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--container-padding);
}

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

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

.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo__title {
  font-weight: 700;
  color: var(--color-text);
}

.logo__subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

/* Navigation */
.nav__list {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav__link {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-text);
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

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

.nav__icon {
  font-size: var(--font-size-sm);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

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

/* Mobile Navigation Styles */
.nav__list--mobile-open {
  position: fixed;
  top: 80px;
  left: 0;
  right: 0;
  background: var(--color-bg);
  box-shadow: 0 4px 20px var(--color-shadow);
  flex-direction: column;
  padding: var(--spacing-lg);
  z-index: 999;
}

/* Hamburger Animation */
.nav__toggle--active .nav__toggle-line:nth-child(1) {
  transform: rotate(45deg) translateY(6px);
}

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

.nav__toggle--active .nav__toggle-line:nth-child(3) {
  transform: rotate(-45deg) translateY(-6px);
}

/* Header Scroll Effect */
.header--hidden {
  transform: translateY(-100%);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

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

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

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

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

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

/* Main Content */
.main {
  margin-top: 80px;
}

/* Hero Section */
.hero {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, #fff 0%, #f8f9fa 100%);
  position: relative;
  overflow: hidden;
}

.hero--secondary {
  padding: var(--spacing-2xl) 0;
  background: var(--color-bg-light);
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.hero__tagline {
  display: inline-block;
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-md);
}

.hero__title {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

.hero__description {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
  color: var(--color-text-light);
}

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

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

.hero__image {
  width: 100%;
  max-width: 500px;
  height: auto;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 20px 40px var(--color-shadow);
  z-index: 2;
  position: relative;
}

.hero__shapes {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
}

.hero__shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.8;
}

.hero__shape--orange {
  width: 200px;
  height: 200px;
  background: var(--color-primary);
  top: 20%;
  right: 10%;
  animation: float 6s ease-in-out infinite;
}

.hero__shape--yellow {
  width: 150px;
  height: 150px;
  background: var(--color-secondary);
  bottom: 20%;
  left: 15%;
  animation: float 4s ease-in-out infinite reverse;
}

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

/* CTA Section */
.cta-section {
  padding: var(--spacing-3xl) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  text-align: center;
  color: white;
}

.cta-section__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.cta-section__title {
  color: white;
  margin-bottom: var(--spacing-md);
}

.cta-section__description {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
  color: rgba(255, 255, 255, 0.9);
}

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

.cta-section .btn--primary:hover {
  background: var(--color-bg-light);
  transform: translateY(-2px);
}

/* Form Styles */
.form {
  max-width: 600px;
}

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

.form__label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 600;
  color: var(--color-text);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: var(--font-size-base);
  transition: var(--transition);
}

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

.form__error {
  color: #dc3545;
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
}

.form__checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  cursor: pointer;
}

.form__checkbox {
  width: 18px;
  height: 18px;
}

/* Footer */
.footer {
  background: var(--color-bg-dark);
  color: white;
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
}

.footer__container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.footer__brand {
  max-width: 400px;
}

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

.footer__logo .logo__title,
.footer__logo .logo__subtitle {
  color: white;
}

.footer__description {
  color: rgba(255, 255, 255, 0.7);
}

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

.footer__heading {
  margin-bottom: var(--spacing-md);
  color: white;
}

.footer__list {
  list-style: none;
}

.footer__list li {
  margin-bottom: var(--spacing-xs);
}

.footer__link {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

.footer__link:hover {
  color: white;
}

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

.footer__copyright {
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}

/* Animation Classes */
.animate-in {
  animation: fadeInUp 0.6s ease-out;
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Message Styles */
.message {
  position: fixed;
  top: 100px;
  right: 20px;
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  color: white;
  z-index: 1001;
  animation: slideIn 0.3s ease-out;
}

.message--success {
  background: #28a745;
}

.message--error {
  background: #dc3545;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav__list {
    display: none;
  }
  
  .nav__toggle {
    display: flex;
  }
  
  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .hero__container {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    text-align: center;
  }
  
  .hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .hero__actions {
    justify-content: center;
  }
  
  .hero__shape--orange {
    width: 120px;
    height: 120px;
  }
  
  .hero__shape--yellow {
    width: 80px;
    height: 80px;
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: 1rem;
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
  }
  
  .hero__title {
    font-size: var(--font-size-2xl);
  }
  
  .hero__actions {
    flex-direction: column;
    align-items: center;
  }
}