/* ========================================
   10 Goal Writing & Manifest Website — Design Tokens & Styles
   ======================================== */

:root {
  /* Colors */
  --color-brand: #F59E0B;
  --color-brand-hover: #D97706;
  --color-brand-bg: rgba(245, 158, 11, 0.08);
  --color-brand-bg-strong: rgba(245, 158, 11, 0.15);
  --color-coral: #E87D6A;
  --color-coral-bg: rgba(232, 125, 106, 0.10);
  --color-text: #111827;
  --color-text-secondary: #6B7280;
  --color-text-tertiary: #9CA3AF;
  --color-surface: #FFFFFF;
  --color-bg: #FAFAFA;
  --color-bg-alt: #F3F4F6;
  --color-border: #E5E7EB;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 9999px;

  /* Shadows */
  --shadow-subtle: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-medium: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-strong: 0 8px 30px rgba(0,0,0,0.12);
}

/* ========================================
   Reset & Base
   ======================================== */

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

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul { list-style: none; }

/* ========================================
   Utilities
   ======================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  background: var(--color-brand);
  color: #fff;
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-weight: 600;
}

.skip-link:focus {
  top: var(--space-sm);
}

.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  font-weight: 600;
  padding: 0.875rem 1.75rem;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.btn--primary {
  background: var(--color-brand);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-brand-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-medium);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
  margin-bottom: var(--space-3xl);
}

/* ========================================
   Navigation
   ======================================== */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.nav--scrolled {
  background: var(--color-surface);
  box-shadow: var(--shadow-medium);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 1.25rem;
  z-index: 101;
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.nav__links {
  display: flex;
  gap: var(--space-xl);
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
  position: relative;
}

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

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-brand);
  border-radius: 1px;
}

.nav__cta {
  font-size: 0.9375rem;
  padding: 0.625rem 1.5rem;
}

.nav__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  z-index: 101;
}

.nav__hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hamburger open state */
.nav__hamburger--open .nav__hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__hamburger--open .nav__hamburger-line:nth-child(2) {
  opacity: 0;
}
.nav__hamburger--open .nav__hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========================================
   Hero
   ======================================== */

.hero {
  padding: calc(72px + var(--space-4xl)) 0 var(--space-4xl);
  background: var(--color-surface);
}

.hero__inner {
  display: flex;
  align-items: center;
  gap: var(--space-3xl);
}

.hero__content {
  flex: 1;
}

.hero__title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: var(--space-lg);
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-xl);
  max-width: 520px;
}

.hero__image {
  flex: 0 0 auto;
}

.app-store-badge svg {
  transition: transform 0.2s ease;
}

.app-store-badge:hover svg {
  transform: scale(1.05);
}

/* Phone Mockup */
.phone-mockup {
  position: relative;
  width: 280px;
  background: var(--color-surface);
  border-radius: 36px;
  padding: 12px;
  box-shadow: var(--shadow-strong);
  border: 1px solid var(--color-border);
}

.phone-mockup img {
  border-radius: 24px;
}

/* ========================================
   Social Proof Bar
   ======================================== */

.social-proof {
  background: var(--color-brand-bg);
  padding: var(--space-lg) 0;
}

.social-proof__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.social-proof__item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 600;
  font-size: 0.9375rem;
}

.social-proof__icon {
  font-size: 1.25rem;
}

.social-proof__divider {
  width: 1px;
  height: 24px;
  background: var(--color-brand);
  opacity: 0.3;
}

/* ========================================
   Pain → Solution
   ======================================== */

.pain-solution {
  padding: var(--space-4xl) 0;
}

.pain-solution__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.pain-solution__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  transition: box-shadow 0.2s ease;
}

.pain-solution__card:hover {
  box-shadow: var(--shadow-medium);
}

.pain-solution__icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.pain-solution__pain {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.pain-solution__pain-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.pain-solution__arrow {
  font-size: 1.5rem;
  color: var(--color-brand);
  margin-bottom: var(--space-md);
}

.pain-solution__solution {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-brand-hover);
  margin-bottom: var(--space-sm);
}

.pain-solution__solution-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
}

/* ========================================
   Features
   ======================================== */

.features {
  padding: var(--space-4xl) 0;
  background: var(--color-surface);
}

.feature {
  display: flex;
  align-items: center;
  gap: var(--space-3xl);
  margin-bottom: var(--space-4xl);
}

.feature:last-child {
  margin-bottom: 0;
}

.feature--reverse {
  flex-direction: row-reverse;
}

.feature__image {
  flex: 0 0 auto;
}

.feature__content {
  flex: 1;
}

.feature__badge {
  display: inline-block;
  background: var(--color-brand-bg-strong);
  color: #B45309;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-md);
}

.feature__badge--coral {
  background: var(--color-coral-bg);
  color: var(--color-coral);
}

.feature__title {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: var(--space-md);
}

.feature__desc {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 480px;
}

/* ========================================
   How It Works
   ======================================== */

.how-it-works {
  padding: var(--space-4xl) 0;
  background: var(--color-bg-alt);
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
}

.step {
  flex: 1;
  max-width: 320px;
  text-align: center;
  padding: 0 var(--space-lg);
}

.step__number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-brand);
  color: #fff;
  font-weight: 700;
  font-size: 1.125rem;
  border-radius: 50%;
  margin-bottom: var(--space-md);
}

.step__icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.step__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.step__desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.steps__connector {
  flex: 0 0 auto;
  width: 60px;
  height: 2px;
  background: var(--color-border);
  margin-top: 20px;
  position: relative;
}

.steps__connector::after {
  content: '';
  position: absolute;
  right: -4px;
  top: -3px;
  width: 8px;
  height: 8px;
  border-top: 2px solid var(--color-border);
  border-right: 2px solid var(--color-border);
  transform: rotate(45deg);
}

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

.faq {
  padding: var(--space-4xl) 0;
  background: var(--color-bg-alt);
}

.faq__list {
  max-width: 720px;
  margin: 0 auto;
}

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

.faq__question {
  padding: var(--space-lg) 0;
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.faq__question::-webkit-details-marker {
  display: none;
}

.faq__question::after {
  content: '';
  flex-shrink: 0;
  width: 12px;
  height: 12px;
  border-right: 2px solid var(--color-text-secondary);
  border-bottom: 2px solid var(--color-text-secondary);
  transform: rotate(45deg);
  transition: transform 0.3s ease;
  margin-top: -4px;
}

.faq__item[open] .faq__question::after {
  transform: rotate(-135deg);
  margin-top: 4px;
}

.faq__answer {
  padding-bottom: var(--space-lg);
}

.faq__answer p {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* ========================================
   Final CTA
   ======================================== */

.final-cta {
  padding: var(--space-4xl) 0;
  background: var(--color-brand-bg);
}

.final-cta__inner {
  text-align: center;
}

.final-cta__title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

.final-cta__subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}

/* ========================================
   Footer
   ======================================== */

.footer {
  padding: var(--space-xl) 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

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

.footer__copyright {
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
}

.footer__links {
  display: flex;
  gap: var(--space-xl);
}

.footer__link {
  font-size: 0.875rem;
  color: var(--color-text-tertiary);
  transition: color 0.2s ease;
}

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

/* ========================================
   Responsive — Tablet (≤ 1024px)
   ======================================== */

@media (max-width: 1024px) {
  .section-title {
    font-size: 2rem;
  }

  .hero__title {
    font-size: 2.5rem;
  }

  .hero__inner {
    gap: var(--space-xl);
  }

  .phone-mockup {
    width: 240px;
  }

  .feature {
    gap: var(--space-xl);
  }
}

/* ========================================
   Responsive — Mobile (≤ 768px)
   ======================================== */

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-md);
  }

  .section-title {
    font-size: 1.75rem;
    margin-bottom: var(--space-2xl);
  }

  /* Nav mobile */
  .nav__links {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-surface);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-xl);
    transform: translateX(100%);
    transition: transform 0.3s ease;
  }

  .nav__links--open {
    transform: translateX(0);
  }

  .nav__link {
    font-size: 1.25rem;
  }

  .nav__cta {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  /* Hero mobile */
  .hero {
    padding: calc(72px + var(--space-2xl)) 0 var(--space-3xl);
  }

  .hero__inner {
    flex-direction: column;
    text-align: center;
  }

  .hero__title {
    font-size: 2.25rem;
  }

  .hero__subtitle {
    font-size: 1.125rem;
    margin-left: auto;
    margin-right: auto;
  }

  .hero__image {
    display: flex;
    justify-content: center;
  }

  .phone-mockup {
    width: 240px;
  }

  /* Social proof mobile */
  .social-proof__inner {
    flex-direction: column;
    gap: var(--space-md);
  }

  .social-proof__divider {
    width: 40px;
    height: 1px;
  }

  /* Pain solution mobile */
  .pain-solution {
    padding: var(--space-3xl) 0;
  }

  .pain-solution__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  /* Features mobile */
  .features {
    padding: var(--space-3xl) 0;
  }

  .feature,
  .feature--reverse {
    flex-direction: column;
    text-align: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
  }

  .feature__desc {
    max-width: none;
  }

  .feature__image {
    display: flex;
    justify-content: center;
  }

  /* Steps mobile */
  .how-it-works {
    padding: var(--space-3xl) 0;
  }

  .steps {
    flex-direction: column;
    align-items: center;
    gap: var(--space-xl);
  }

  .steps__connector {
    width: 2px;
    height: 40px;
    margin-top: 0;
  }

  .steps__connector::after {
    right: -3px;
    top: auto;
    bottom: -4px;
    transform: rotate(135deg);
  }

  /* FAQ mobile */
  .faq {
    padding: var(--space-3xl) 0;
  }

  .faq__question {
    font-size: 1rem;
  }

  /* Final CTA mobile */
  .final-cta {
    padding: var(--space-3xl) 0;
  }

  .final-cta__title {
    font-size: 1.75rem;
  }

  .final-cta__subtitle {
    font-size: 1.0625rem;
  }

  /* Footer mobile */
  .footer__inner {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .footer__links {
    gap: var(--space-lg);
  }
}

/* ========================================
   Responsive — Small mobile (≤ 480px)
   ======================================== */

@media (max-width: 480px) {
  .hero__title {
    font-size: 1.875rem;
  }

  .phone-mockup {
    width: 220px;
  }
}