:root {
  --color-background: #0a0a0a;
  --color-surface: #141414;
  --color-primary: #ffffff;
  --color-secondary: #a3a3a3;
  --color-accent: #3effdc;
  --color-accent-dark: #00c7a8;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-success: #4caf50;
  --color-warning: #ffc107;
  --color-danger: #f44336;

  --font-primary: "Poppins", sans-serif;
  --font-secondary: "Roboto", sans-serif;

  --transition-fast: 0.2s ease-in-out;
  --transition-smooth: 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);

  --shadow-glow: 0 0 15px rgba(62, 255, 220, 0.2),
    0 0 30px rgba(62, 255, 220, 0.1);
  --shadow-card: 0px 8px 24px rgba(0, 0, 0, 0.5);
  --border-radius-main: 8px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

body {
  background-color: var(--color-background);
  color: var(--color-secondary);
  font-family: var(--font-secondary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-primary);
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1.5rem;
}

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

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

ul {
  list-style: none;
}

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

.container {
  width: 90%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  font-family: var(--font-primary);
  font-weight: 600;
  border-radius: var(--border-radius-main);
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  transition: all var(--transition-smooth);
  border: 2px solid transparent;
}

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

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

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-background);
  box-shadow: var(--shadow-glow);
  border-color: var(--color-accent);
}

.btn-accent:hover {
  background-color: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-3px);
  box-shadow: 0 5px 20px rgba(62, 255, 220, 0.4);
}

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

.btn-secondary:hover {
  background-color: var(--color-surface);
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-intro {
  font-size: 1.1rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 1rem 0;
  transition: background-color var(--transition-smooth),
    padding var(--transition-smooth);
}

.main-header.scrolled {
  background-color: rgba(10, 10, 10, 0.95);
  padding: 0.5rem 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

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

.logo {
  font-family: var(--font-primary);
  font-weight: 800;
  font-size: 1.8rem;
  color: var(--color-primary);
}

.logo i {
  color: var(--color-accent);
  margin-right: 0.5rem;
  transform: rotate(-15deg);
}

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

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  color: var(--color-secondary);
  font-weight: 600;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-smooth);
}

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

.nav-link:hover::after {
  width: 100%;
}

.hamburger {
  display: none;
  cursor: pointer;
}

.bar {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px auto;
  background-color: var(--color-primary);
  transition: all 0.3s ease-in-out;
}

.hero-section {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

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

.hero-bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.4);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    circle,
    rgba(10, 10, 10, 0.1) 0%,
    rgba(10, 10, 10, 0.9) 80%
  );
}

.hero-content {
  animation: fadeIn 1.5s ease-in-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 800;
  margin-bottom: 1.5rem;
  letter-spacing: -2px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.3rem);
  max-width: 800px;
  margin: 0 auto 2.5rem auto;
  color: var(--color-secondary);
}

.hero-cta-group {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

section {
  padding: 6rem 0;
}

.section-description {
  background-color: var(--color-surface);
}

.description-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.description-card {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  padding: 2.5rem;
  border-radius: var(--border-radius-main);
  transition: transform var(--transition-smooth),
    box-shadow var(--transition-smooth);
}

.description-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  border-color: var(--color-accent);
}

.card-icon {
  font-size: 2.5rem;
  color: var(--color-accent);
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.benefits-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.benefits-image-column img {
  border-radius: var(--border-radius-main);
  box-shadow: var(--shadow-card);
}

.benefit-item {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.benefit-icon {
  font-size: 2rem;
  color: var(--color-accent);
  flex-shrink: 0;
  width: 50px;
  height: 50px;
  background-color: rgba(62, 255, 220, 0.1);
  border-radius: 50%;
  display: grid;
  place-items: center;
}

.benefit-content h4 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.section-interactive {
  background-color: var(--color-surface);
}

.interactive-calculator {
  max-width: 800px;
  margin: 2rem auto 0;
  padding: 2rem;
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-main);
}

.calculator-step {
  display: none;
}
.calculator-step.active {
  display: block;
}

.calculator-step h4 {
  font-size: 1.3rem;
  text-align: center;
  margin-bottom: 2rem;
}

.calculator-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.option-btn {
  background-color: var(--color-surface);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  font-size: 1rem;
  cursor: pointer;
  border-radius: var(--border-radius-main);
  transition: background-color var(--transition-fast),
    border-color var(--transition-fast);
}

.option-btn:hover {
  background-color: var(--color-background);
  border-color: var(--color-accent);
}

.calculator-result {
  display: none;
  text-align: center;
}

.calculator-result h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.result-text {
  font-size: 1.2rem;
  color: var(--color-secondary);
}

.result-text strong {
  color: var(--color-accent);
  font-size: 2rem;
  font-weight: 800;
  display: block;
  margin: 1rem 0;
}

.case-study {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-bottom: 5rem;
}

.case-study.reverse {
  grid-template-columns: 1fr 1fr;
}

.case-study.reverse .case-study-content {
  order: 2;
}

.case-study-visual img {
  border-radius: var(--border-radius-main);
}

.case-study-content h4 {
  font-size: 1.8rem;
  color: var(--color-accent);
}

.case-study-content p strong {
  color: var(--color-primary);
  font-weight: 600;
}

.section-video {
  background-color: var(--color-surface);
}

.video-container {
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  cursor: pointer;
}

.video-play-button img {
  border-radius: var(--border-radius-main);
  width: 100%;
}

.play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 5rem;
  color: var(--color-primary);
  background-color: rgba(0, 0, 0, 0.5);
  width: 100px;
  height: 100px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  transition: transform var(--transition-smooth),
    background-color var(--transition-smooth);
}

.video-play-button:hover .play-icon {
  transform: translate(-50%, -50%) scale(1.1);
  background-color: rgba(62, 255, 220, 0.8);
  color: var(--color-background);
}

.section-table {
  padding-bottom: 6rem;
}

.table-responsive {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-main);
}

.expense-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 800px;
}

.expense-table th,
.expense-table td {
  padding: 1.2rem 1.5rem;
  text-align: left;
}

.expense-table thead {
  background-color: var(--color-surface);
}

.expense-table th {
  font-family: var(--font-primary);
  font-weight: 600;
  color: var(--color-primary);
}

.expense-table tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-fast);
}

.expense-table tbody tr:last-child {
  border-bottom: none;
}

.expense-table tbody tr:hover {
  background-color: var(--color-surface);
}

.icon-table {
  margin-right: 0.8rem;
  color: var(--color-accent);
}

.positive {
  color: var(--color-danger);
}
.negative {
  color: var(--color-success);
}
.neutral {
  color: var(--color-secondary);
}

.status-ok {
  background-color: rgba(76, 175, 80, 0.1);
  color: var(--color-success);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
}
.status-check {
  background-color: rgba(255, 193, 7, 0.1);
  color: var(--color-warning);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
}
.status-alert {
  background-color: rgba(244, 67, 54, 0.1);
  color: var(--color-danger);
  padding: 0.3rem 0.6rem;
  border-radius: 4px;
}

.section-guide {
  background-color: var(--color-surface);
}

.section-guide .container {
  display: flex;
  align-items: center;
  gap: 4rem;
}

.guide-content ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 2rem;
}

.guide-content ul li {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
}

.guide-content ul li i {
  color: var(--color-accent);
  margin-right: 1rem;
  font-size: 1.2rem;
}

.guide-image {
  flex-shrink: 0;
  width: 350px;
}

.guide-image img {
  transform: rotate(3deg);
  border-radius: var(--border-radius-main);
  box-shadow: -10px 10px 30px rgba(0, 0, 0, 0.5);
}

.section-mission {
  background-color: var(--color-background);
}

.mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  background-image: linear-gradient(
    to right,
    rgba(62, 255, 220, 0.1),
    rgba(10, 10, 10, 0.1)
  );
  padding: 4rem;
  border-radius: var(--border-radius-main);
  border: 1px solid var(--color-border);
}

.mission-item h3 {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--color-accent);
}

.section-team {
  background-color: var(--color-surface);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.team-member {
  text-align: center;
  padding: 2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-main);
  background-color: var(--color-background);
}

.member-icon {
  font-size: 4rem;
  width: 120px;
  height: 120px;
  margin: 0 auto 1.5rem auto;
  border-radius: 50%;
  background: linear-gradient(
    145deg,
    var(--color-surface),
    var(--color-background)
  );
  display: grid;
  place-items: center;
  color: var(--color-accent);
  box-shadow: inset 5px 5px 10px #0d0d0d, inset -5px -5px 10px #1b1b1b;
}

.member-name {
  font-size: 1.3rem;
  margin-bottom: 0.25rem;
}

.member-role {
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 1rem;
}

.member-bio {
  font-size: 0.9rem;
}

.section-testimonials {
  background-color: var(--color-background);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.testimonial-card {
  background-color: var(--color-surface);
  padding: 2.5rem;
  border-radius: var(--border-radius-main);
  border-left: 4px solid var(--color-accent);
  display: flex;
  flex-direction: column;
}

.testimonial-icon {
  font-size: 2.5rem;
  color: var(--color-secondary);
  align-self: flex-start;
  margin-bottom: 1rem;
}

.testimonial-text {
  font-style: italic;
  flex-grow: 1;
}

.testimonial-author {
  color: var(--color-primary);
  margin-bottom: 0;
}

.testimonial-company {
  font-size: 0.9rem;
  color: var(--color-secondary);
}

.section-cta {
  background: linear-gradient(rgba(10, 10, 10, 0.8), rgba(10, 10, 10, 0.8)),
    url("../media/cta-bg.png") no-repeat center center/cover;
  text-align: center;
  padding: 8rem 0;
}

.cta-title {
  font-size: 2.8rem;
  font-weight: 800;
}

.cta-text {
  max-width: 600px;
  margin: 0 auto 2.5rem auto;
}

.main-footer {
  background-color: var(--color-surface);
  padding: 5rem 0 2rem 0;
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 2fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-column .footer-logo {
  margin-bottom: 1.5rem;
}

.footer-heading {
  font-size: 1.2rem;
  margin-bottom: 1.5rem;
  color: var(--color-primary);
}

.footer-list li {
  margin-bottom: 0.8rem;
}

.footer-list a {
  color: var(--color-secondary);
}

.footer-list a:hover {
  color: var(--color-accent);
  padding-left: 5px;
}

.social-media {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.social-media a {
  color: var(--color-secondary);
  font-size: 1.2rem;
}

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

.newsletter-form {
  display: flex;
}

.newsletter-form input {
  width: 100%;
  padding: 0.8rem;
  border: 1px solid var(--color-border);
  background-color: var(--color-background);
  color: var(--color-primary);
  border-radius: var(--border-radius-main) 0 0 var(--border-radius-main);
  border-right: none;
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.newsletter-form button {
  border-radius: 0 var(--border-radius-main) var(--border-radius-main) 0;
  padding: 0.8rem 1.2rem;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.cookie-notification {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 1.5rem;
  z-index: 2000;
  transform: translateY(100%);
  transition: transform var(--transition-smooth);
}

.cookie-notification.show {
  transform: translateY(0);
}

.cookie-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  gap: 1rem;
}

.btn-cookie {
  background-color: var(--color-accent);
  color: var(--color-background);
  border: none;
  flex-shrink: 0;
}

@media (max-width: 992px) {
  .nav-menu {
    position: fixed;
    left: -100%;
    top: 70px;
    flex-direction: column;
    background-color: var(--color-background);
    width: 100%;
    height: calc(100vh - 70px);
    text-align: center;
    transition: 0.3s;
    gap: 2rem;
    padding-top: 3rem;
  }
  .nav-menu.active {
    left: 0;
  }
  .nav-item {
    margin: 1rem 0;
  }
  .hamburger {
    display: block;
  }
  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }
  .hamburger.active .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .hamburger.active .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  .benefits-container,
  .case-study,
  .case-study.reverse,
  .section-guide .container {
    grid-template-columns: 1fr;
  }
  .case-study.reverse .case-study-content {
    order: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-column.about,
  .footer-column.newsletter {
    grid-column: 1 / -1;
  }
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }
  .case-study,
  .case-study.reverse {
    gap: 2rem;
  }
  .guide-content {
    text-align: center;
  }
  .guide-image {
    display: none;
  }
  .mission-grid {
    grid-template-columns: 1fr;
    padding: 2rem;
  }
  .cookie-container {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 576px) {
  body {
    font-size: 15px;
  }
  .calculator-options {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}