/* ============================================
   7Laps Landing Page Styles
   ============================================ */

/* CSS Custom Properties */
:root {
  /* Colors */
  --color-primary: #1a1f36;
  --color-primary-dark: #0f1629;
  --color-text: #1a1f36;
  --color-text-light: #6b7280;
  --color-background: #ffffff;
  --color-background-alt: #f8fafc;
  --color-border: #e5e7eb;
  --color-accent: #10b981;
  --color-stars: #fbbf24;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;

  /* Layout */
  --max-width: 1200px;
  --border-radius: 0.5rem;
  --border-radius-lg: 1rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
}

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background-color: var(--color-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.nav__logo {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-xs);
  z-index: 1001;
}

.nav__toggle-bar {
  width: 24px;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition-normal);
}

.nav__menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 80%;
  max-width: 320px;
  height: 100vh;
  background-color: var(--color-background);
  padding: 6rem var(--spacing-lg) var(--spacing-lg);
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
  transition: right var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.nav__menu.active {
  right: 0;
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.nav__link {
  font-size: var(--font-size-lg);
  color: var(--color-text);
  transition: color var(--transition-fast);
}

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

.nav__cta {
  width: 100%;
}

/* Desktop Navigation */
@media (min-width: 1024px) {
  .nav__toggle {
    display: none;
  }

  .nav__menu {
    position: static;
    width: auto;
    max-width: none;
    height: auto;
    padding: 0;
    box-shadow: none;
    flex-direction: row;
    align-items: center;
    gap: var(--spacing-xl);
  }

  .nav__list {
    flex-direction: row;
    gap: var(--spacing-lg);
  }

  .nav__link {
    font-size: var(--font-size-base);
  }

  .nav__cta {
    width: auto;
  }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
  font-weight: 500;
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

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

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

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

.btn--large {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
}

.btn__icon {
  width: 1.25em;
  height: 1.25em;
}

/* ============================================
   Section Titles
   ============================================ */
.section__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--spacing-sm);
}

.section__title--left {
  text-align: left;
}

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

@media (min-width: 768px) {
  .section__title {
    font-size: var(--font-size-4xl);
  }
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  padding: calc(4.5rem + var(--spacing-2xl)) 0 var(--spacing-2xl);
  background-color: var(--color-background);
}

.hero__container {
  display: grid;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  max-width: 540px;
}

.hero__social-proof {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.hero__avatars {
  display: flex;
}

.hero__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-border);
  border: 2px solid white;
  margin-left: -8px;
}

.hero__avatar:first-child {
  margin-left: 0;
}

.hero__reviews {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.hero__stars {
  color: var(--color-stars);
}

.hero__image img {
  border-radius: var(--border-radius-lg);
}

@media (min-width: 768px) {
  .hero__title {
    font-size: var(--font-size-4xl);
  }
}

@media (min-width: 1024px) {
  .hero {
    padding: calc(4.5rem + var(--spacing-3xl)) 0 var(--spacing-3xl);
  }

  .hero__container {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
  }

  .hero__title {
    font-size: var(--font-size-5xl);
  }
}

/* ============================================
   Problem Section
   ============================================ */
.problem {
  padding: var(--spacing-2xl) 0;
  background-color: var(--color-background-alt);
}

.problem__list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.problem__item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  background-color: var(--color-background);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--border-radius);
}

.problem__check {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--color-accent);
}

.problem__check svg {
  width: 100%;
  height: 100%;
}

.problem__item p {
  color: var(--color-text);
}

@media (min-width: 768px) {
  .problem {
    padding: var(--spacing-3xl) 0;
  }
}

/* ============================================
   Solution Section
   ============================================ */
.solution {
  padding: var(--spacing-2xl) 0;
}

.solution__container {
  display: grid;
  gap: var(--spacing-xl);
  align-items: center;
}

.solution__title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

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

.solution__text:last-of-type {
  margin-bottom: 0;
}

.solution__image img {
  border-radius: var(--border-radius-lg);
}

@media (min-width: 768px) {
  .solution__title {
    font-size: var(--font-size-3xl);
  }
}

@media (min-width: 1024px) {
  .solution {
    padding: var(--spacing-3xl) 0;
  }

  .solution__container {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
  }

  .solution__content {
    order: -1;
  }
}

/* ============================================
   Features Section
   ============================================ */
.features {
  padding: var(--spacing-2xl) 0;
  background-color: var(--color-background-alt);
}

.features__grid {
  display: grid;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.feature {
  text-align: center;
  padding: var(--spacing-lg);
}

.feature__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-md);
  padding: var(--spacing-sm);
  background-color: var(--color-background);
  border-radius: var(--border-radius);
  color: var(--color-text);
}

.feature__icon svg {
  width: 100%;
  height: 100%;
}

.feature__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.feature__text {
  color: var(--color-text-light);
  font-size: var(--font-size-base);
}

@media (min-width: 768px) {
  .features {
    padding: var(--spacing-3xl) 0;
  }

  .features__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   Steps Section (How It Works)
   ============================================ */
.steps {
  padding: var(--spacing-2xl) 0;
}

.steps__grid {
  display: grid;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.step__number {
  display: block;
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--color-border);
  margin-bottom: var(--spacing-sm);
}

.step__title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.step__text {
  color: var(--color-text-light);
}

@media (min-width: 768px) {
  .steps {
    padding: var(--spacing-3xl) 0;
  }

  .steps__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   Reviews Section
   ============================================ */
.reviews {
  padding: var(--spacing-2xl) 0;
  background-color: var(--color-background);
}

.reviews__container {
  display: grid;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.reviews__video {
  background-color: var(--color-background-alt);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.reviews__video-placeholder {
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light);
}

.reviews__list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.review {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
}

.review__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.review__avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--color-background-alt);
}

.review__info {
  display: flex;
  flex-direction: column;
}

.review__name {
  font-weight: 600;
}

.review__stars {
  color: var(--color-stars);
  font-size: var(--font-size-sm);
}

.review__text {
  color: var(--color-text-light);
  font-style: italic;
}

@media (min-width: 768px) {
  .reviews {
    padding: var(--spacing-3xl) 0;
  }

  .reviews__container {
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-xl);
  }

  .reviews__list {
    justify-content: center;
  }
}

/* ============================================
   FAQ Section
   ============================================ */
.faq {
  padding: var(--spacing-2xl) 0;
}

.faq__list {
  max-width: 800px;
  margin: var(--spacing-xl) auto 0;
}

.faq__item {
  border-bottom: 1px solid var(--color-border);
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
  font-size: var(--font-size-base);
  font-weight: 500;
  text-align: left;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

.faq__question:hover {
  color: var(--color-text-light);
}

.faq__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  transition: transform var(--transition-normal);
}

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

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal);
}

.faq__answer p {
  padding-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

.faq__item.active .faq__answer {
  max-height: 500px;
}

@media (min-width: 768px) {
  .faq {
    padding: var(--spacing-3xl) 0;
  }

  .faq__question {
    font-size: var(--font-size-lg);
  }
}

/* ============================================
   CTA Section
   ============================================ */
.cta {
  padding: var(--spacing-2xl) 0;
  background-color: var(--color-primary);
  color: white;
}

.cta__container {
  text-align: center;
}

.cta__title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.cta__text {
  font-size: var(--font-size-lg);
  opacity: 0.9;
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
  .cta {
    padding: var(--spacing-3xl) 0;
  }

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

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--color-border);
}

.footer__container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  text-align: center;
}

.footer__copyright {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.footer__nav {
  display: flex;
  gap: var(--spacing-lg);
}

.footer__link {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-text);
}

@media (min-width: 768px) {
  .footer__container {
    flex-direction: row;
    justify-content: space-between;
  }
}

/* ============================================
   Utilities
   ============================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}