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

/* CSS Custom Properties (Design System) */
:root {
  /* Color Palette */
  --color-primary-bg: #13171C;
  --color-secondary-bg: #1F242F;
  --color-accent: #FF2158;
  --color-text: #C4C6C5;
  --color-border: #2A2F3A;
  --color-white: #FFFFFF;
  --color-accent-hover: #FF3367;
  --color-accent-glow: rgba(255, 33, 88, 0.3);

  /* Typography */
  --font-primary: 'Poppins', sans-serif;
  --font-secondary: 'Manrope', sans-serif;

  /* Font Sizes - Desktop */
  --font-size-h1: 3.5rem;
  --font-size-h2: 2.5rem;
  --font-size-h3: 1.5rem;
  --font-size-body: 1.125rem;
  --font-size-small: 0.875rem;

  /* Font Sizes - Mobile */
  --font-size-h1-mobile: 2.5rem;
  --font-size-h2-mobile: 2rem;
  --font-size-h3-mobile: 1.25rem;
  --font-size-body-mobile: 1rem;
  --font-size-small-mobile: 0.75rem;

  /* Spacing */
  --spacing-section-desktop: 80px;
  --spacing-section-mobile: 60px;
  --spacing-grid-gap: 24px;
  --spacing-card-padding: 24px;
  --spacing-container-margin: 20px;

  /* Layout */
  --container-max-width: 1200px;
  --border-radius-card: 12px;
  --border-radius-button: 8px;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.8s ease;

  /* Breakpoints */
  --breakpoint-desktop: 1200px;
  --breakpoint-tablet: 768px;
  --breakpoint-mobile: 767px;
}

/* Base HTML Styles */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-body);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-primary-bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--color-accent);
  color: var(--color-white);
  padding: 8px;
  text-decoration: none;
  border-radius: var(--border-radius-button);
  z-index: 1000;
}

.skip-link:focus {
  top: 6px;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

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

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

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

p {
  margin-bottom: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-secondary);
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  border: none;
  border-radius: var(--border-radius-button);
  cursor: pointer;
  transition: all var(--transition-medium);
  min-height: 44px; /* Touch target size */
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: 12px 24px;
}

.btn--primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--color-accent-glow);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
  padding: 10px 22px;
}

.btn--secondary:hover {
  background-color: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px var(--color-accent-glow);
}

.btn--large {
  font-size: var(--font-size-body);
  padding: 16px 32px;
  min-height: 52px;
}

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

/* Header Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: rgba(19, 23, 28, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
}

.nav {
  padding: 1rem 0;
}

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

.nav__brand {
  flex-shrink: 0;
}

.nav__logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  margin: 0;
}

.nav__menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 2rem;
}

.nav__link {
  color: var(--color-text);
  text-decoration: none;
  font-family: var(--font-secondary);
  font-weight: 600;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

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

.nav__link--cta {
  background-color: var(--color-accent);
  color: var(--color-white) !important;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius-button);
  transition: all var(--transition-medium);
}

.nav__link--cta:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--color-accent-glow);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav__toggle-line {
  width: 25px;
  height: 3px;
  background-color: var(--color-text);
  margin: 3px 0;
  transition: all var(--transition-fast);
  border-radius: 2px;
}

/* Section Styles */
section {
  padding: var(--spacing-section-desktop) 0;
}

.section__header {
  text-align: center;
  margin-bottom: 4rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.section__title {
  color: var(--color-white);
  font-size: var(--font-size-h2);
  margin-bottom: 1rem;
}

.section__subtitle {
  font-size: var(--font-size-body);
  color: var(--color-text);
  font-family: var(--font-secondary);
  font-weight: 400;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0;
  position: relative;
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding-top: 120px;
}

.hero__content {
  animation: fadeInUp 1s ease;
}

.hero__title {
  color: var(--color-white);
  font-size: var(--font-size-h1);
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero__subtitle {
  font-size: var(--font-size-body);
  color: var(--color-text);
  margin-bottom: 2.5rem;
  font-family: var(--font-secondary);
  max-width: 400px;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero__visual {
  position: relative;
  height: 500px;
}

.hero__abstract {
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, var(--color-accent) 0%, transparent 70%);
  opacity: 0.1;
  border-radius: 50%;
  animation: float 6s ease-in-out infinite;
}

/* Services Section */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-grid-gap);
}

.service-card {
  background-color: var(--color-secondary-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-card);
  padding: var(--spacing-card-padding);
  text-align: center;
  transition: all var(--transition-medium);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.service-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-accent);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.service-card__icon {
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
}

.service-card__title {
  color: var(--color-white);
  font-size: var(--font-size-h3);
  margin-bottom: 1rem;
}

.service-card__description {
  color: var(--color-text);
  font-family: var(--font-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.service-card__cta {
  color: var(--color-accent);
  text-decoration: none;
  font-family: var(--font-secondary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  transition: color var(--transition-fast);
}

.service-card__cta:hover {
  color: var(--color-accent-hover);
}

/* Case Studies Section */
.case-studies {
  background-color: var(--color-secondary-bg);
}

.case-studies__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-grid-gap);
}

.case-study-card {
  background-color: var(--color-primary-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-card);
  padding: var(--spacing-card-padding);
  transition: all var(--transition-medium);
}

.case-study-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.case-study-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}

.case-study-card__client {
  color: var(--color-white);
  font-size: var(--font-size-h3);
  margin: 0;
}

.case-study-card__industry {
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: var(--font-size-small);
  font-family: var(--font-secondary);
  font-weight: 600;
}

.case-study-card__challenge {
  color: var(--color-text);
  margin-bottom: 1rem;
  font-style: italic;
}

.case-study-card__solution {
  color: var(--color-text);
  margin-bottom: 1.5rem;
}

.case-study-card__results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.result-metric {
  text-align: center;
}

.result-metric__value {
  display: block;
  color: var(--color-accent);
  font-size: var(--font-size-h3);
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.result-metric__label {
  font-size: var(--font-size-small);
  color: var(--color-text);
  font-family: var(--font-secondary);
}

.case-study-card__testimonial {
  border-left: 3px solid var(--color-accent);
  padding-left: 1rem;
  margin: 0;
  color: var(--color-text);
  font-style: italic;
}

.case-study-card__testimonial cite {
  display: block;
  margin-top: 0.5rem;
  font-style: normal;
  font-size: var(--font-size-small);
  color: var(--color-text);
}

/* Lead Magnet Section */
.lead-magnet__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.lead-magnet__title {
  color: var(--color-white);
  font-size: var(--font-size-h2);
  margin-bottom: 1rem;
}

.lead-magnet__subtitle {
  color: var(--color-text);
  font-family: var(--font-secondary);
  margin-bottom: 2rem;
  font-size: var(--font-size-body);
}

.lead-magnet__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.lead-magnet__mockup {
  width: 300px;
  height: 400px;
  perspective: 1000px;
}

.mockup__cover {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
  border-radius: var(--border-radius-card);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  color: var(--color-white);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
  transform: rotateY(-10deg);
  transition: transform var(--transition-medium);
}

.lead-magnet__mockup:hover .mockup__cover {
  transform: rotateY(0deg);
}

.mockup__cover h3 {
  font-size: var(--font-size-h3);
  margin-bottom: 1rem;
}

.mockup__cover p {
  font-family: var(--font-secondary);
  font-size: var(--font-size-small);
}

/* Form Styles */
.lead-magnet__form {
  max-width: 400px;
}

.form__group {
  margin-bottom: 1.5rem;
}

.form__label {
  display: block;
  color: var(--color-text);
  font-family: var(--font-secondary);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.form__input {
  width: 100%;
  padding: 12px 16px;
  background-color: var(--color-secondary-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-button);
  color: var(--color-text);
  font-family: var(--font-secondary);
  font-size: var(--font-size-body);
  transition: all var(--transition-fast);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(255, 33, 88, 0.1);
}

.form__disclaimer {
  font-size: var(--font-size-small);
  color: var(--color-text);
  text-align: center;
  margin-top: 1rem;
  font-family: var(--font-secondary);
}

/* Industries Section */
.industries__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-grid-gap);
}

.industry-card {
  background-color: var(--color-secondary-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-card);
  padding: var(--spacing-card-padding);
  text-align: center;
  transition: all var(--transition-medium);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.industry-card:hover {
  transform: translateY(-5px);
  border-color: var(--color-accent);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.industry-card__icon {
  color: var(--color-accent);
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: center;
}

.industry-card__title {
  color: var(--color-white);
  font-size: var(--font-size-h3);
  margin-bottom: 0.75rem;
}

.industry-card__benefit {
  color: var(--color-text);
  font-family: var(--font-secondary);
  font-size: var(--font-size-small);
  line-height: 1.4;
}

/* Contact Section */
.contact {
  background-color: var(--color-secondary-bg);
  text-align: center;
}

.contact__content {
  max-width: 800px;
  margin: 0 auto;
}

.contact__title {
  color: var(--color-white);
  font-size: var(--font-size-h2);
  margin-bottom: 1rem;
}

.contact__subtitle {
  color: var(--color-text);
  font-family: var(--font-secondary);
  margin-bottom: 2rem;
  font-size: var(--font-size-body);
}

.contact__trust {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 3rem;
}

.trust__item {
  color: var(--color-text);
  font-family: var(--font-secondary);
  font-size: var(--font-size-small);
  position: relative;
}

.trust__item:not(:last-child)::after {
  content: '•';
  position: absolute;
  right: -1.2rem;
  color: var(--color-border);
}

.calendly-placeholder {
  background-color: var(--color-primary-bg);
  border: 2px dashed var(--color-border);
  border-radius: var(--border-radius-card);
  padding: 3rem;
  margin: 2rem 0;
}

.calendly-placeholder h3 {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.calendly-placeholder p {
  color: var(--color-text);
  margin-bottom: 2rem;
  font-family: var(--font-secondary);
}

/* Footer */
.footer {
  background-color: var(--color-primary-bg);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
}

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

.footer__brand {
  text-align: left;
}

.footer__logo {
  color: var(--color-white);
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.footer__tagline {
  color: var(--color-text);
  font-family: var(--font-secondary);
  font-size: var(--font-size-small);
  margin: 0;
}

.footer__info {
  text-align: right;
}

.footer__info p {
  color: var(--color-text);
  font-size: var(--font-size-small);
  margin-bottom: 0.5rem;
  font-family: var(--font-secondary);
}

.footer__links {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
}

.footer__links a {
  color: var(--color-text);
  text-decoration: none;
  font-size: var(--font-size-small);
  font-family: var(--font-secondary);
  transition: color var(--transition-fast);
}

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

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

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

/* Scroll animations (will be triggered by JavaScript) */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Responsive Design - Tablet */
@media (max-width: 1199px) {
  .hero .container {
    gap: 3rem;
  }

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

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

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

  .lead-magnet__content {
    gap: 3rem;
  }
}

/* Responsive Design - Mobile */
@media (max-width: 767px) {
  :root {
    --font-size-h1: var(--font-size-h1-mobile);
    --font-size-h2: var(--font-size-h2-mobile);
    --font-size-h3: var(--font-size-h3-mobile);
    --font-size-body: var(--font-size-body-mobile);
    --font-size-small: var(--font-size-small-mobile);
  }

  section {
    padding: var(--spacing-section-mobile) 0;
  }

  .section__header {
    margin-bottom: 3rem;
  }

  /* Navigation */
  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-secondary-bg);
    border-top: 1px solid var(--color-border);
    flex-direction: column;
    padding: 2rem;
    gap: 1rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-medium);
  }

  .nav__menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

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

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

  .nav__menu.active .nav__toggle-line:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }

  /* Hero */
  .hero .container {
    grid-template-columns: 1fr;
    gap: 2rem;
    text-align: center;
    padding-top: 100px;
  }

  .hero__subtitle {
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    flex-direction: column;
    align-items: center;
  }

  .hero__visual {
    height: 300px;
  }

  /* Services */
  .services__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Case Studies */
  .case-studies__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .case-study-card__results {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  /* Lead Magnet */
  .lead-magnet__content {
    grid-template-columns: 1fr;
    gap: 3rem;
    text-align: center;
  }

  .lead-magnet__mockup {
    width: 250px;
    height: 330px;
    margin: 0 auto;
  }

  /* Industries */
  .industries__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  /* Contact */
  .contact__trust {
    flex-direction: column;
    gap: 0.5rem;
  }

  .trust__item:not(:last-child)::after {
    display: none;
  }

  .calendly-placeholder {
    padding: 2rem 1rem;
  }

  /* Footer */
  .footer__content {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }

  .footer__brand,
  .footer__info {
    text-align: center;
  }

  .footer__links {
    justify-content: center;
  }
}

/* Small Mobile Devices */
@media (max-width: 480px) {
  .container {
    padding: 0 15px;
  }

  .hero__actions {
    width: 100%;
  }

  .btn--large {
    width: 100%;
    max-width: 280px;
  }
}

/* Print Styles */
@media print {
  .header,
  .nav__toggle,
  .footer,
  .btn,
  .calendly-placeholder {
    display: none !important;
  }

  body {
    color: #000;
    background: #fff;
  }

  .section__title,
  .hero__title {
    color: #000;
  }

  .service-card,
  .case-study-card,
  .industry-card {
    border: 1px solid #ccc;
    box-shadow: none;
    page-break-inside: avoid;
  }
}