/* ==========================================================================
   ROOT VARIABLES
   ========================================================================== */

:root {
  --ribbon-red: #d32f2f;
  --bg-dark: #071530;
  --navy-deep: #061b2b;
  --card-white: #ffffff;
  --card-header: #0b1220;
  --muted: #8b95a4;
  --accent-purple: #7c5cff;
  --accent-cyan: #39d8ff;
  --cta-green: #10b981;
  --glass-border: rgba(255, 255, 255, 0.06);
  --max-width: 1200px;
  
  /* Additional colors */
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-dark: #1f2937;
  --border-light: rgba(255, 255, 255, 0.1);
  --shadow-card: 0 8px 30px rgba(2, 6, 23, 0.6);
  --shadow-button: 0 12px 40px rgba(16, 185, 129, 0.16);
  --gradient-primary: linear-gradient(90deg, var(--cta-green), #059669);
  --gradient-text: linear-gradient(90deg, var(--accent-purple), var(--accent-cyan));
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

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

/* ==========================================================================
   LAYOUT COMPONENTS
   ========================================================================== */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section-title {
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: clamp(32px, 4vw, 48px);
  line-height: 1.1;
  text-align: center;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.section-title--white {
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 18px;
  color: var(--muted);
  text-align: center;
  margin-bottom: 48px;
}

.section-subtitle--white {
  color: var(--text-secondary);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 16px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-align: center;
  white-space: nowrap;
}

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

.btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 50px rgba(16, 185, 129, 0.24);
}

.btn--large {
  padding: 18px 32px;
  font-size: 18px;
  border-radius: 16px;
}

.btn--header {
  padding: 10px 20px;
  font-size: 14px;
}

.btn--link {
  color: var(--text-secondary);
  background: transparent;
  padding: 8px 0;
  border-radius: 0;
  box-shadow: none;
  border-bottom: 2px solid transparent;
}

.btn--link:hover {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
  transform: none;
  box-shadow: none;
}

/* ==========================================================================
   TOP RIBBON
   ========================================================================== */

.top-ribbon {
  background: var(--ribbon-red);
  color: white;
  text-align: center;
  padding: 8px 0;
  font-size: 14px;
  font-weight: 600;
}

/* ==========================================================================
   HEADER
   ========================================================================== */

.header {
  background: var(--bg-dark);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border-light);
}

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

.logo img {
  height: 40px;
  width: auto;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
  background: var(--bg-dark);
  padding: 80px 0 100px;
  position: relative;
}

.hero__badge {
  text-align: center;
  margin-bottom: 32px;
}

.badge {
  display: inline-block;
  background: rgba(124, 92, 255, 0.1);
  border: 1px solid rgba(124, 92, 255, 0.2);
  color: var(--accent-purple);
  padding: 8px 16px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.hero__title {
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: clamp(28px, 4.5vw, 52px);
  line-height: 1.02;
  margin-bottom: 24px;
}

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

.hero__subtitle {
  font-size: 20px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.5;
}

.hero__benefits {
  margin-bottom: 40px;
}

.hero__benefits li {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 16px;
  color: var(--text-secondary);
}

.hero__benefits i {
  color: var(--cta-green);
  width: 20px;
  height: 20px;
}

.hero__cta {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.mockup {
  text-align: center;
}

.mockup__image {
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 20px 60px rgba(0, 0, 0, 0.3));
}

/* ==========================================================================
   WHY SECTION
   ========================================================================== */

.why {
  background: var(--card-white);
  padding: 100px 0;
}

.why .section-title {
  margin-bottom: 64px;
}

.why__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 48px;
}

.why__card {
  text-align: center;
}

.why__icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.why__icon i {
  color: white;
  width: 32px;
  height: 32px;
}

.why__card h3 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 24px;
  margin-bottom: 16px;
  color: var(--text-dark);
}

.why__card p {
  color: var(--muted);
  line-height: 1.6;
}

/* ==========================================================================
   TOPICS SECTION (MASSIVE LIST)
   ========================================================================== */

.topics {
  background: var(--navy-deep);
  padding: 100px 0;
}

.topics .section-title {
  margin-bottom: 64px;
}

.topics__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 40px;
  justify-content: center;
}

.topic-card {
  background: var(--card-white);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  max-width: 300px;
  margin: 0 auto;
}

.topic-card__head {
  background: var(--card-header);
  color: white;
  padding: 12px 16px;
  font-weight: 700;
  font-size: 14px;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.topic-card__list {
  padding: 14px 16px;
}

.topic-card__list li {
  padding: 8px 0;
  color: var(--text-dark);
  font-size: 14px;
  line-height: 1.4;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  position: relative;
  padding-left: 16px;
}

.topic-card__list li::before {
  content: '•';
  color: var(--accent-purple);
  font-weight: bold;
  position: absolute;
  left: 0;
}

.topic-card__list li:last-child {
  border-bottom: none;
}

/* ==========================================================================
   SAMPLES SECTION
   ========================================================================== */

.samples {
  background: var(--card-white);
  padding: 100px 0;
}

.samples .section-title {
  margin-bottom: 16px;
}

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

.slider-container {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 32px;
}

.slider {
  flex: 1;
  overflow: hidden;
  border-radius: 16px;
  margin: 0 60px;
}

.slider__track {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.slider__slide {
  min-width: 100%;
  display: flex;
  justify-content: center;
}

.sample-image {
  width: 100%;
  max-width: 400px;
  height: 500px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
}

.slider-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  background: var(--card-white);
  border: 1px solid rgba(0, 0, 0, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 2;
}

.slider-btn:hover {
  background: var(--bg-dark);
  color: white;
  transform: translateY(-50%) scale(1.1);
}

.slider-btn--prev {
  left: 0;
}

.slider-btn--next {
  right: 0;
}

.slider-dots {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.slider-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: all 0.3s ease;
}

.slider-dot.active,
.slider-dot:hover {
  background: var(--accent-purple);
  transform: scale(1.2);
}

/* ==========================================================================
   BONUS SECTION
   ========================================================================== */

.bonus {
  background: var(--bg-dark);
  padding: 100px 0;
}

.bonus .section-title {
  color: var(--text-primary);
  margin-bottom: 64px;
}

.bonus__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 40px;
}

.bonus__card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s ease;
}

.bonus__card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--accent-purple);
}

.bonus__icon {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.bonus__icon i {
  color: white;
  width: 24px;
  height: 24px;
}

.bonus__card h3 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 20px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.bonus__card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   REVIEWS SECTION
   ========================================================================== */

.reviews {
  background: var(--card-white);
  padding: 100px 0;
}

.reviews .section-title {
  margin-bottom: 64px;
}

.reviews__slider {
  max-width: 1000px;
  margin: 0 auto;
  overflow: hidden;
}

.reviews-container {
  overflow: hidden;
  border-radius: 16px;
}

.reviews__track {
  display: flex;
  gap: 32px;
  animation: scroll 20s linear infinite;
}

.review-card {
  flex: 0 0 320px;
  background: var(--bg-dark);
  border-radius: 16px;
  padding: 32px;
  color: white;
}

.review__image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 12px;
  margin-bottom: 16px;
}

.review__stars {
  font-size: 16px;
  margin-bottom: 16px;
}

.review__text {
  font-size: 16px;
  line-height: 1.5;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.review__author {
  font-weight: 600;
  color: var(--text-primary);
}

@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}

.reviews__track:hover {
  animation-play-state: paused;
}

/* ==========================================================================
   PRICING SECTION
   ========================================================================== */

.pricing {
  background: var(--navy-deep);
  padding: 100px 0;
}

.pricing .section-title {
  margin-bottom: 16px;
}

.pricing .section-subtitle {
  margin-bottom: 64px;
}

.pricing__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 40px;
  max-width: 800px;
  margin: 0 auto;
}

.pricing-card {
  background: var(--card-header);
  border-radius: 20px;
  padding: 40px 32px;
  position: relative;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

.pricing-card.is-featured {
  border-color: var(--accent-purple);
  box-shadow: 0 0 40px rgba(124, 92, 255, 0.12);
  transform: scale(1.05);
}

.pricing-card__badge {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-text);
  color: white;
  padding: 8px 24px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pricing-card__title {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 24px;
  text-align: center;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.pricing-card__price {
  text-align: center;
  margin-bottom: 32px;
}

.price-old {
  display: block;
  font-size: 16px;
  color: var(--muted);
  text-decoration: line-through;
  margin-bottom: 8px;
}

.price-current {
  display: block;
  font-family: 'Poppins', sans-serif;
  font-weight: 800;
  font-size: 48px;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 8px;
}

.price-installments {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
}

.pricing-card__features {
  margin-bottom: 32px;
}

.pricing-card__features li {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 16px;
}

.pricing-card__features i {
  color: var(--cta-green);
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.pricing-card__features strong {
  color: var(--text-primary);
}

/* ==========================================================================
   FAQ SECTION
   ========================================================================== */

.faq {
  background: var(--card-white);
  padding: 100px 0;
}

.faq .section-title {
  margin-bottom: 64px;
}

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

.faq__item {
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-dark);
  text-align: left;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

.faq__question i {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.faq__question[aria-expanded="true"] i {
  transform: rotate(180deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq__answer.open {
  max-height: 200px;
}

.faq__answer p {
  padding-bottom: 24px;
  color: var(--muted);
  line-height: 1.6;
}

/* ==========================================================================
   GUARANTEE SECTION
   ========================================================================== */

.guarantee {
  background: var(--bg-dark);
  padding: 80px 0;
}

.guarantee__content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  text-align: center;
}

.seal {
  width: 120px;
  height: 120px;
  background: linear-gradient(135deg, #f6d365, #fda085);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 4px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.seal::before {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 50%;
  background: linear-gradient(135deg, #f6d365, #fda085);
  z-index: -1;
  opacity: 0.3;
}

.seal i {
  color: white;
  width: 32px;
  height: 32px;
  margin-bottom: 4px;
}

.seal span {
  font-size: 12px;
  font-weight: 700;
  color: white;
  text-align: center;
  line-height: 1.1;
  text-transform: uppercase;
}

.guarantee__text h3 {
  font-family: 'Poppins', sans-serif;
  font-weight: 700;
  font-size: 28px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.guarantee__text p {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 500px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
  background: var(--card-header);
  padding: 60px 0 20px;
  color: var(--text-secondary);
}

.footer__content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer__logo {
  height: 32px;
  width: auto;
  margin-bottom: 16px;
}

.footer__info p {
  line-height: 1.6;
  margin-bottom: 16px;
}

.footer__links h4,
.footer__legal h4 {
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 16px;
}

.footer__links ul,
.footer__legal ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer__links a,
.footer__legal a {
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

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

.footer__bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 20px;
  text-align: center;
  font-size: 14px;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

/* Tablet */
@media (max-width: 1024px) {
  .hero__content {
    gap: 40px;
  }
  
  .topics__grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
  }
  
  .why__grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
  }
  
  .bonus__grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
  }
  
  .pricing__grid {
    grid-template-columns: 1fr;
    max-width: 400px;
  }
  
  .pricing-card.is-featured {
    transform: none;
  }
  
  .footer__content {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .hero {
    padding: 40px 0 60px;
  }
  
  .hero__content {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero__right {
    order: -1;
  }
  
  .hero__cta {
    justify-content: center;
  }
  
  .why {
    padding: 60px 0;
  }
  
  .topics {
    padding: 60px 0;
  }
  
  .topics__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .samples {
    padding: 60px 0;
  }
  
  .slider {
    margin: 0 40px;
  }
  
  .slider-btn {
    width: 40px;
    height: 40px;
  }
  
  .bonus {
    padding: 60px 0;
  }
  
  .reviews {
    padding: 60px 0;
  }
  
  .review-card {
    flex: 0 0 280px;
  }
  
  .pricing {
    padding: 60px 0;
  }
  
  .pricing__grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .faq {
    padding: 60px 0;
  }
  
  .guarantee {
    padding: 60px 0;
  }
  
  .guarantee__content {
    flex-direction: column;
    gap: 24px;
  }
  
  .footer__content {
    grid-template-columns: 1fr;
    gap: 24px;
    text-align: center;
  }
  
  .header__content {
    flex-wrap: wrap;
    gap: 16px;
  }
  
  .btn--header {
    order: 2;
    width: 100%;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .hero__title {
    font-size: clamp(24px, 7vw, 32px);
  }
  
  .section-title {
    font-size: clamp(24px, 6vw, 32px);
  }
  
  .hero__cta {
    flex-direction: column;
    align-items: stretch;
  }
  
  .btn--large {
    width: 100%;
  }
  
  .slider {
    margin: 0 20px;
  }
  
  .slider-btn {
    width: 36px;
    height: 36px;
  }
  
  .review-card {
    flex: 0 0 260px;
    padding: 24px;
  }
  
  .topic-card {
    max-width: none;
  }
}