:root {
  --spotify-black: #191414;
  --spotify-green: #1DB954;
  --spotify-white: #ffffff;
  --spotify-gray: #b3b3b3;
  --spotify-shadow: rgba(0, 0, 0, 0.3);
}

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

body {
  background: linear-gradient(180deg, #191414 0%, #232323 100%);
  font-family: "Helvetica Neue", Arial, sans-serif;
  color: var(--spotify-white);
  overflow-x: hidden;
}

header {
  padding: 1.5rem 5%;
  background-color: var(--spotify-black);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 100;
}

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

.logo img {
  width: 120px;
  height: auto;
}

nav a {
  color: var(--spotify-gray);
  text-decoration: none;
  font-size: 1rem;
  transition: color 0.2s ease;
}

nav a:hover {
  color: var(--spotify-green);
}

/* Hero Section */
.hero {
  padding: 6rem 5% 3rem;
  text-align: center;
  position: relative;
  background: rgba(25, 20, 20, 0.5);
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 900;
  margin-bottom: 1rem;
}

.hero .subtitle {
  font-size: 1.6rem;
  color: var(--spotify-gray);
  margin-bottom: 2rem;
}

.cta-button {
  background-color: var(--spotify-green);
  color: var(--spotify-white);
  padding: 1rem 3rem;
  border: none;
  border-radius: 6px;
  font-size: 1.5rem;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.cta-button:hover {
  background-color: #1ed760;
}

/* Intro Section */
.intro {
  padding: 3rem 5%;
  background: rgba(25, 20, 20, 0.85);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.intro p {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--spotify-white);
  text-align: center;
}

/* Benefits Section */
.benefits {
  padding: 3rem 5%;
}

.benefits h2 {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 2rem;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.benefit-item {
  background: rgba(25, 20, 20, 0.85);
  padding: 1.5rem;
  border-radius: 8px;
  text-align: center;
  transition: transform 0.2s ease;
}

.benefit-item:hover {
  transform: translateY(-5px);
}

.benefit-icon {
  stroke: var(--spotify-green);
  width: 32px;
  height: 32px;
  margin-bottom: 1rem;
}

.benefit-item h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
}

.benefit-item p {
  font-size: 1rem;
  color: var(--spotify-gray);
}

/* How It Works */
.how-it-works {
  padding: 3rem 5%;
  background: rgba(25, 20, 20, 0.85);
}

.how-it-works h2 {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 2rem;
}

.steps {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 250px;
  background: rgba(35, 35, 35, 0.9);
  padding: 1.5rem;
  border-radius: 8px;
  text-align: left;
  transition: transform 0.2s ease;
}

.step:hover {
  transform: translateY(-5px);
}

.step-number {
  display: inline-block;
  width: 40px;
  height: 40px;
  line-height: 40px;
  text-align: center;
  background: var(--spotify-green);
  color: var(--spotify-white);
  border-radius: 50%;
  font-weight: 700;
  margin-bottom: 1rem;
}

.step h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.step p {
  font-size: 1rem;
  color: var(--spotify-gray);
}

/* Testimonial */
.testimonial {
  padding: 3rem 5%;
  text-align: center;
}

.testimonial h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 2rem;
}

.testimonial blockquote {
  font-size: 1.3rem;
  font-style: italic;
  color: var(--spotify-white);
  margin-bottom: 1rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  background: rgba(25, 20, 20, 0.85);
  padding: 2rem;
  border-radius: 8px;
  border-left: 4px solid var(--spotify-green);
}

.testimonial cite {
  font-size: 1rem;
  color: var(--spotify-gray);
  font-style: normal;
}

/* FAQ */
.faq {
  padding: 3rem 5%;
  background: rgba(25, 20, 20, 0.85);
}

.faq h2 {
  font-size: 2.5rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 2rem;
}

.faq-item {
  max-width: 800px;
  margin: 0 auto 1.5rem;
}

.faq-question {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--spotify-white);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background: rgba(35, 35, 35, 0.9);
  border-radius: 6px;
  transition: background 0.2s ease;
}

.faq-question:hover {
  background: rgba(45, 45, 45, 0.9);
}

.faq-question .chevron {
  stroke: var(--spotify-gray);
  transition: transform 0.3s ease;
}

.faq-question.active .chevron {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  font-size: 1rem;
  color: var(--spotify-gray);
  line-height: 1.6;
  padding: 0 1rem;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.active {
  max-height: 200px;
  padding: 1rem;
}

/* Loader Overlay */
.loader-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(25, 20, 20, 0.95);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.loader-content {
  text-align: center;
  background: rgba(25, 20, 20, 0.85);
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 8px var(--spotify-shadow);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--spotify-gray);
  border-top: 4px solid var(--spotify-green);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1rem;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.loader-message {
  font-size: 1.2rem;
  color: var(--spotify-white);
}

/* Popup */
.popup {
  position: absolute;
  top: 90px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(25, 20, 20, 1);
  padding: 1rem 1.5rem;
  border-radius: 8px;
  border: 2px solid var(--spotify-green);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  z-index: 2000;
  display: none;
  opacity: 0;
  transition: opacity 0.5s ease, transform 0.3s ease;
}

.popup.show {
  display: block !important;
  opacity: 1 !important;
  transform: translateX(-50%) translateY(-5px);
}

#popup-message {
  font-size: 1.1rem;
  color: var(--spotify-white);
}

footer {
  text-align: center;
  padding: 1.5rem;
  background-color: var(--spotify-black);
  color: var(--spotify-gray);
  font-size: 0.9rem;
}

footer a {
  color: var(--spotify-green);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

@media (max-width: 480px) {
  .hero {
    padding: 5.5rem 3% 2rem;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero .subtitle {
    font-size: 1.3rem;
  }

  .cta-button {
    font-size: 1.2rem;
    padding: 0.8rem 2rem;
  }

  .intro {
    padding: 2rem 3%;
  }

  .intro p {
    font-size: 1rem;
  }

  .benefits {
    padding: 2rem 3%;
  }

  .benefits h2 {
    font-size: 2rem;
  }

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

  .benefit-item {
    padding: 1rem;
  }

  .benefit-icon {
    width: 28px;
    height: 28px;
  }

  .benefit-item h3 {
    font-size: 1.2rem;
  }

  .benefit-item p {
    font-size: 0.9rem;
  }

  .how-it-works {
    padding: 2rem 3%;
  }

  .how-it-works h2 {
    font-size: 2rem;
  }

  .steps {
    flex-direction: column;
    gap: 1rem;
  }

  .step {
    min-width: 100%;
  }

  .step-number {
    width: 35px;
    height: 35px;
    line-height: 35px;
  }

  .step h3 {
    font-size: 1.2rem;
  }

  .step p {
    font-size: 0.9rem;
  }

  .testimonial {
    padding: 2rem 3%;
  }

  .testimonial h2 {
    font-size: 2rem;
  }

  .testimonial blockquote {
    font-size: 1.1rem;
    padding: 1.5rem;
  }

  .testimonial cite {
    font-size: 0.9rem;
  }

  .faq {
    padding: 2rem 3%;
  }

  .faq h2 {
    font-size: 2rem;
  }

  .faq-question {
    font-size: 1.2rem;
    padding: 0.8rem;
  }

  .faq-answer.active {
    max-height: 300px;
    padding: 0.8rem;
  }

  .loader-content {
    padding: 1.5rem;
  }

  .spinner {
    width: 30px;
    height: 30px;
    border-width: 3px;
  }

  .loader-message {
    font-size: 1rem;
  }

  .popup {
    top: 80px;
    padding: 0.8rem 1.2rem;
  }

  #popup-message {
    font-size: 0.95rem;
  }

  footer {
    font-size: 0.8rem;
  }
}