/* ==========================================================================
   ShopBooks Marketing Design System
   Earthy/Forest Brand Color Palette with Responsive Dark Mode support
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Surfaces & Ink */
  --bg: #f4f5f1;
  --bg-soft: #eceee7;
  --card: #ffffff;
  --card-soft: #fbfbf8;
  --ink: #1c211e;
  --ink-soft: #3c433d;
  --muted: #6b7268;
  
  /* Brand accents */
  --accent: #2f6f4f; /* Pine green */
  --accent-hover: #23543b;
  --accent-soft: rgba(47, 111, 79, 0.08);
  --accent-ring: rgba(47, 111, 79, 0.16);
  --accent-ink: #ffffff;

  /* Status and Borders */
  --border: #e2e0d5;
  --border-strong: #d0cdc0;
  --good: #2f6f4f;
  --good-soft: #e4f0e8;
  --bad: #a33a2a;
  --bad-soft: #f7e3df;
  --warn: #9a6b00;
  --warn-soft: #f3ecd9;

  /* Shadows & Radius */
  --shadow-sm: 0 1px 2px rgba(31, 41, 33, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(31, 41, 33, 0.08), 0 8px 16px -6px rgba(31, 41, 33, 0.05);
  --shadow-lg: 0 25px 50px -12px rgba(31, 41, 33, 0.15);
  --r-sm: 6px;
  --r: 12px;
  --r-lg: 20px;
  
  /* Fonts */
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111416;
    --bg-soft: #181c1f;
    --card: #1c2126;
    --card-soft: #232a31;
    --ink: #e5eae3;
    --ink-soft: #c0c7bd;
    --muted: #879086;
    
    --accent: #52a377;
    --accent-hover: #61b487;
    --accent-soft: rgba(82, 163, 119, 0.12);
    --accent-ring: rgba(82, 163, 119, 0.24);
    --accent-ink: #0c1410;

    --border: #2c333a;
    --border-strong: #3b444e;
    --good: #61b487;
    --good-soft: #1c2f24;
    --bad: #e77862;
    --bad-soft: #3a2420;
    --warn: #dcae4c;
    --warn-soft: #362f1c;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 16px -6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.6);
  }
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color 0.4s ease, color 0.4s ease;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.15;
  color: var(--ink);
}

.serif-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(3rem, 7vw, 5.5rem);
  letter-spacing: -0.01em;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 400;
  margin-bottom: 16px;
  line-height: 1.1;
}

.subtitle {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--ink-soft);
  max-width: 600px;
  font-weight: 400;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  background-color: rgba(244, 245, 241, 0.8);
  border-bottom: 1px solid var(--border);
  transition: background-color 0.4s ease, border-color 0.4s ease;
}

@media (prefers-color-scheme: dark) {
  header {
    background-color: rgba(17, 20, 22, 0.8);
  }
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.logo-icon {
  width: 28px;
  height: 28px;
  background-color: var(--accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  font-weight: 800;
  font-size: 1.1rem;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 24px;
  align-items: center;
}

nav a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: var(--r-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  border: none;
}

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

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

.btn-secondary {
  background-color: var(--card);
  color: var(--ink);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover {
  background-color: var(--bg-soft);
  transform: translateY(-1px);
}

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

.hero {
  padding: 80px 0 100px;
  text-align: center;
  overflow: hidden;
}

.hero .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 40px;
}

.hero-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.badge-pill {
  background-color: var(--accent-soft);
  color: var(--accent);
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: 1px solid rgba(47, 111, 79, 0.15);
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-top: 10px;
}

.hero-media {
  width: 100%;
  max-width: 950px;
  margin-top: 20px;
  position: relative;
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  aspect-ratio: 16/9;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ==========================================================================
   Ethos & Pillars Section
   ========================================================================== */

.ethos {
  background-color: var(--card-soft);
  padding: 100px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.ethos-header {
  text-align: center;
  margin-bottom: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

.pillar-card {
  background-color: var(--card);
  padding: 40px;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease;
}

.pillar-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.pillar-icon {
  width: 48px;
  height: 48px;
  background-color: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  margin-bottom: 24px;
  font-size: 1.5rem;
}

.pillar-card h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}

.pillar-card p {
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   Interactive Mockup Section
   ========================================================================== */

.interactive-mockup {
  padding: 100px 0;
}

.mockup-header {
  text-align: center;
  margin-bottom: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.mockup-window {
  width: 100%;
  max-width: 950px;
  margin: 0 auto;
  background-color: var(--card);
  border: 1px solid var(--border-strong);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.window-header {
  background-color: var(--bg-soft);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--border);
  gap: 16px;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--border-strong);
}

.window-title {
  font-size: 0.85rem;
  color: var(--muted);
  font-family: monospace;
  letter-spacing: 0.05em;
}

.mockup-body {
  display: grid;
  grid-template-columns: 200px 1fr;
  min-height: 480px;
}

@media (max-width: 768px) {
  .mockup-body {
    grid-template-columns: 1fr;
  }
  .mockup-sidebar {
    display: none;
  }
}

.mockup-sidebar {
  background-color: var(--bg-soft);
  border-right: 1px solid var(--border);
  padding: 20px 12px;
}

.sidebar-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.sidebar-item {
  padding: 8px 12px;
  border-radius: var(--r-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--ink-soft);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-item.active {
  background-color: var(--accent-soft);
  color: var(--accent);
}

.mockup-content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

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

.content-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.mockup-tabs {
  display: flex;
  border-bottom: 1px solid var(--border);
  gap: 16px;
}

.mockup-tab {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
  cursor: pointer;
}

.mockup-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Ledger and Transaction elements */
.txn-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.txn-row {
  display: grid;
  grid-template-columns: 100px 1fr 100px 120px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  background-color: var(--card);
  align-items: center;
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

@media (max-width: 600px) {
  .txn-row {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
}

.txn-date {
  color: var(--muted);
  font-family: monospace;
}

.txn-desc {
  font-weight: 600;
  color: var(--ink);
}

.txn-amount {
  font-weight: 700;
  font-family: monospace;
  text-align: right;
}

.txn-amount.out {
  color: var(--bad);
}

.txn-amount.in {
  color: var(--good);
}

.txn-status {
  text-align: right;
}

.badge-status {
  padding: 2px 8px;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
  display: inline-block;
}

.badge-pending {
  background-color: var(--warn-soft);
  color: var(--warn);
  border: 1px solid rgba(154, 107, 0, 0.15);
}

.badge-posted {
  background-color: var(--good-soft);
  color: var(--good);
  border: 1px solid rgba(47, 111, 79, 0.15);
}

.badge-skipped {
  background-color: var(--bg-soft);
  color: var(--muted);
  border: 1px solid var(--border);
}

.interactive-helper {
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
  background-color: var(--bg-soft);
  padding: 10px;
  border-radius: var(--r-sm);
  border: 1px dashed var(--border-strong);
  margin-top: 10px;
}

/* ==========================================================================
   Monthly Workflow Section
   ========================================================================== */

.workflow {
  background-color: var(--bg-soft);
  padding: 100px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.workflow-header {
  text-align: center;
  margin-bottom: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.step-card {
  position: relative;
  background-color: var(--card);
  padding: 30px;
  border-radius: var(--r);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.step-number {
  position: absolute;
  top: -15px;
  left: 20px;
  width: 32px;
  height: 32px;
  background-color: var(--accent);
  color: var(--accent-ink);
  font-weight: 700;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
}

.step-card h3 {
  font-size: 1.15rem;
  margin-top: 10px;
  margin-bottom: 10px;
}

.step-card p {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

/* ==========================================================================
   Inspiration / Backstory Section
   ========================================================================== */

.backstory {
  padding: 100px 0;
}

.backstory-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

@media (max-width: 768px) {
  .backstory-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.backstory-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.backstory-text h2 {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 400;
  line-height: 1.1;
}

.backstory-text p {
  color: var(--ink-soft);
  font-size: 1.05rem;
  line-height: 1.7;
}

.backstory-quote {
  border-left: 3px solid var(--accent);
  padding-left: 20px;
  margin: 10px 0;
  font-style: italic;
  color: var(--ink);
  font-weight: 500;
}

.backstory-visual {
  background-color: var(--card-soft);
  padding: 40px;
  border-radius: var(--r-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.story-point {
  display: flex;
  gap: 16px;
}

.story-point-icon {
  font-size: 1.5rem;
  color: var(--accent);
  margin-top: 2px;
}

.story-point-text h4 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}

.story-point-text p {
  font-size: 0.9rem;
  color: var(--ink-soft);
}

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

.faq {
  background-color: var(--card-soft);
  padding: 100px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.faq-header {
  text-align: center;
  margin-bottom: 60px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.faq-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

@media (max-width: 768px) {
  .faq-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

.faq-item {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item h3 {
  font-size: 1.1rem;
  font-weight: 600;
}

.faq-item p {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

/* ==========================================================================
   Call To Action
   ========================================================================== */

.cta {
  padding: 120px 0;
  text-align: center;
  background: radial-gradient(circle at top, var(--bg-soft), var(--bg));
}

.cta-content {
  max-width: 650px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

.cta h2 {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 400;
}

.cta p {
  font-size: 1.1rem;
  color: var(--ink-soft);
}

.terminal-box {
  background-color: #1a1e21;
  color: #a9b7c6;
  padding: 14px 20px;
  border-radius: var(--r-sm);
  font-family: monospace;
  font-size: 0.85rem;
  width: 100%;
  max-width: 450px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-md);
  margin-top: 10px;
  border: 1px solid #2d333b;
}

@media (prefers-color-scheme: dark) {
  .terminal-box {
    background-color: #0b0d0e;
    border-color: #1f2429;
  }
}

.terminal-text {
  user-select: all;
  text-align: left;
}

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

.terminal-copy {
  background: none;
  border: none;
  color: var(--muted);
  cursor: pointer;
  padding: 4px;
}

.terminal-copy:hover {
  color: #fff;
}

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

footer {
  padding: 40px 0;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--muted);
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  list-style: none;
  gap: 20px;
  margin-top: 16px;
}

.footer-links a {
  color: var(--muted);
}

.footer-links a:hover {
  color: var(--accent);
}