/* ============================================================
   HHPOKER - Nordic Minimalist Stylesheet
   Primary: indigo-500 (#6366f1)
   Design: Clean lines, ample whitespace, ghost buttons
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --color-primary: #6366f1;
  --color-primary-dark: #4f46e5;
  --color-primary-light: #818cf8;
  --color-primary-ghost: rgba(99, 102, 241, 0.08);
  --color-text: #1a1a2e;
  --color-text-secondary: #6b7280;
  --color-text-muted: #9ca3af;
  --color-border: #e5e7eb;
  --color-bg: #ffffff;
  --color-bg-alt: #fafafa;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  --spacing-5xl: 8rem;

  --max-width: 1200px;
  --nav-height: 72px;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  font-size: 18px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.75;
  letter-spacing: -0.01em;
  overflow-x: hidden;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--color-text);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.75rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.35rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
  margin-bottom: var(--spacing-lg);
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  line-height: 1.85;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-dark);
}

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

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

/* --- Section Separator (1px line) --- */
.section-divider {
  width: 100%;
  height: 1px;
  background-color: var(--color-border);
  margin: 0;
}

/* --- Ghost Button --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 0.7rem 1.8rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -0.01em;
  border-radius: 6px;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-ghost:hover {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.btn-ghost-dark {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-text);
}

.btn-ghost-dark:hover {
  background: var(--color-text);
  color: #ffffff;
}

.btn-solid {
  background: var(--color-primary);
  color: #ffffff;
  border: 1.5px solid var(--color-primary);
}

.btn-solid:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #ffffff;
}

.btn-lg {
  padding: 0.9rem 2.4rem;
  font-size: 1.05rem;
}

.btn-xl {
  padding: 1.1rem 3rem;
  font-size: 1.15rem;
  letter-spacing: 0;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.03em;
  text-decoration: none;
}

.nav-logo:hover {
  color: var(--color-primary);
}

.nav-logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 900;
  font-size: 0.9rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  position: relative;
  padding: var(--spacing-xs) 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition-base);
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-links a.active {
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--spacing-sm);
  background: none;
  border: none;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-base);
  border-radius: 1px;
}

/* --- Hero Section --- */
.hero {
  padding: calc(var(--nav-height) + var(--spacing-5xl)) 0 var(--spacing-5xl);
  text-align: center;
}

.hero-label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-primary);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-lg);
  padding: 0.35rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 100px;
}

.hero-title {
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.035em;
  margin-bottom: var(--spacing-xl);
  color: var(--color-text);
}

.hero-title .highlight {
  color: var(--color-primary);
}

.hero-desc {
  font-size: 1.2rem;
  max-width: 640px;
  margin: 0 auto var(--spacing-2xl);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

/* --- Features Grid (2x3) --- */
.features {
  padding: var(--spacing-5xl) 0;
}

.features-header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.features-header h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.features-header p {
  font-size: 1.1rem;
  max-width: 560px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
  row-gap: var(--spacing-4xl);
}

.feature-card {
  text-align: center;
  padding: 0;
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto var(--spacing-lg);
  color: var(--color-primary);
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  stroke-width: 1.5;
}

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 0;
}

/* --- Section Generic --- */
.section {
  padding: var(--spacing-5xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.section-header h2 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

.section-header p {
  font-size: 1.1rem;
  max-width: 560px;
  margin: 0 auto;
}

/* --- Stats Row --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-2xl);
  text-align: center;
}

.stat-item {
  padding: var(--spacing-xl) 0;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: var(--spacing-xs);
}

/* --- CTA Section --- */
.cta-section {
  padding: var(--spacing-5xl) 0;
  text-align: center;
}

.cta-section h2 {
  font-size: 2.75rem;
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  font-size: 1.15rem;
  max-width: 540px;
  margin: 0 auto var(--spacing-2xl);
}

/* --- Page Hero (Subpages) --- */
.page-hero {
  padding: calc(var(--nav-height) + var(--spacing-4xl)) 0 var(--spacing-4xl);
  text-align: center;
}

.page-hero h1 {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
}

.page-hero p {
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto;
}

/* --- Download Cards --- */
.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
}

.download-card {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-xl);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.download-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 2px 24px rgba(99, 102, 241, 0.08);
}

.download-card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.download-card-icon svg {
  width: 40px;
  height: 40px;
  stroke-width: 1.5;
}

.download-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.download-card p {
  font-size: 0.9rem;
  margin-bottom: var(--spacing-xl);
  color: var(--color-text-muted);
}

.download-card .btn {
  width: 100%;
}

/* --- Steps --- */
.steps-list {
  max-width: 720px;
  margin: 0 auto;
  counter-reset: step;
}

.step-item {
  display: flex;
  gap: var(--spacing-xl);
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--color-border);
  counter-increment: step;
}

.step-item:first-child {
  border-top: 1px solid var(--color-border);
}

.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border: 1.5px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
}

.step-content h3 {
  font-size: 1.15rem;
  margin-bottom: var(--spacing-xs);
}

.step-content p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* --- Club Cards --- */
.club-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-2xl);
}

.club-card {
  padding: var(--spacing-2xl);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: border-color var(--transition-base);
}

.club-card:hover {
  border-color: var(--color-primary);
}

.club-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.club-card-icon {
  width: 48px;
  height: 48px;
  background: var(--color-primary-ghost);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.club-card-icon svg {
  width: 24px;
  height: 24px;
  stroke-width: 1.5;
}

.club-card-header h3 {
  font-size: 1.25rem;
}

.club-card-header span {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.club-card-body p {
  font-size: 0.95rem;
  margin-bottom: var(--spacing-sm);
  line-height: 1.7;
}

.club-card-body ul {
  list-style: none;
  padding: 0;
}

.club-card-body ul li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
  line-height: 1.6;
}

.club-card-body ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* --- FAQ / Accordion --- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

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

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-question {
  width: 100%;
  padding: var(--spacing-lg) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  line-height: 1.5;
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  position: relative;
  margin-left: var(--spacing-md);
}

.faq-icon::before,
.faq-icon::after {
  content: '';
  position: absolute;
  background: var(--color-text-secondary);
  transition: transform var(--transition-base);
}

.faq-icon::before {
  top: 9px;
  left: 0;
  width: 20px;
  height: 2px;
}

.faq-icon::after {
  top: 0;
  left: 9px;
  width: 2px;
  height: 20px;
}

.faq-item.active .faq-icon::after {
  transform: rotate(90deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow), padding var(--transition-slow);
}

.faq-item.active .faq-answer {
  max-height: 400px;
}

.faq-answer-inner {
  padding: 0 0 var(--spacing-xl);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* --- Footer --- */
.footer {
  padding: var(--spacing-4xl) 0 var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  max-width: 280px;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

.footer-col a {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* --- Customer Service Widget --- */
.cs-widget {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
}

.cs-toggle {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.3);
  transition: all var(--transition-base);
}

.cs-toggle:hover {
  background: var(--color-primary-dark);
  transform: scale(1.05);
  box-shadow: 0 6px 28px rgba(99, 102, 241, 0.4);
}

.cs-toggle svg {
  width: 24px;
  height: 24px;
  stroke-width: 2;
}

.cs-panel {
  position: absolute;
  bottom: 68px;
  right: 0;
  width: 340px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  display: none;
  flex-direction: column;
}

.cs-panel.open {
  display: flex;
}

.cs-panel-header {
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.cs-panel-header h3 {
  font-size: 1rem;
  font-weight: 700;
}

.cs-panel-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 4px;
  line-height: 1;
}

.cs-panel-body {
  padding: var(--spacing-lg);
  max-height: 300px;
  overflow-y: auto;
}

.cs-message {
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: 8px;
  font-size: 0.85rem;
  line-height: 1.6;
}

.cs-message.agent {
  background: var(--color-primary-ghost);
  color: var(--color-text);
  margin-right: var(--spacing-xl);
}

.cs-message.user {
  background: var(--color-bg-alt);
  color: var(--color-text);
  margin-left: var(--spacing-xl);
  text-align: right;
}

.cs-panel-footer {
  padding: var(--spacing-md) var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  display: flex;
  gap: var(--spacing-sm);
}

.cs-panel-footer input {
  flex: 1;
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  outline: none;
}

.cs-panel-footer input:focus {
  border-color: var(--color-primary);
}

.cs-panel-footer button {
  padding: 0.6rem 1rem;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
}

.cs-panel-footer button:hover {
  background: var(--color-primary-dark);
}

/* --- Toast --- */
.toast {
  position: fixed;
  bottom: 100px;
  right: 28px;
  z-index: 1000;
  background: var(--color-text);
  color: #fff;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: 8px;
  font-size: 0.9rem;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-base);
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 92px;
  right: 28px;
  z-index: 998;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  background: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-base);
  pointer-events: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

.fade-in-up-delay-1 { animation-delay: 0.1s; opacity: 0; }
.fade-in-up-delay-2 { animation-delay: 0.2s; opacity: 0; }
.fade-in-up-delay-3 { animation-delay: 0.3s; opacity: 0; }
.fade-in-up-delay-4 { animation-delay: 0.4s; opacity: 0; }

/* --- Utility --- */
.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.hidden { display: none; }

/* --- Responsive --- */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .download-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  html {
    font-size: 16px;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--color-border);
    display: none;
    gap: var(--spacing-lg);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }

  .features-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
  }

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

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

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

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }

  .cs-panel {
    width: calc(100vw - 56px);
    right: -8px;
  }

  .section {
    padding: var(--spacing-3xl) 0;
  }

  .page-hero h1 {
    font-size: 2.25rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-lg);
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .stats-row {
    grid-template-columns: 1fr;
  }
}