/* ----- RESET & VARIABLES ----- */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

:root {
  --light-bg: #f4f7fb;
  --light-surface: #ffffff;
  --light-card: #ffffff;
  --light-text-primary: #1e293b;
  --light-text-secondary: #64748b;
  --light-border: #e2e8f0;
  --light-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.02);
  --light-accent: #3b82f6;
  --light-success: #10b981;
  --light-warning: #f59e0b;
  --light-danger: #ef4444;
  --light-header-bg: rgba(255, 255, 255, 0.95);
  --container-padding: clamp(1rem, 5vw, 2rem);
  --section-spacing: clamp(3rem, 8vw, 5rem);
}

.dark-mode {
  --dark-bg: #0f172a;
  --dark-surface: #1e293b;
  --dark-card: #1e293b;
  --dark-text-primary: #f1f5f9;
  --dark-text-secondary: #94a3b8;
  --dark-border: #334155;
  --dark-shadow: 0 20px 30px -10px rgba(0, 0, 0, 0.5);
  --dark-accent: #60a5fa;
  --dark-success: #34d399;
  --dark-warning: #fbbf24;
  --dark-danger: #f87171;
  --dark-header-bg: rgba(30, 41, 59, 0.95);
}

body {
  background: var(--light-bg);
  color: var(--light-text-primary);
  min-height: 100vh;
  transition: background 0.3s, color 0.2s;
  line-height: 1.5;
}

body.dark-mode {
  background: var(--dark-bg);
  color: var(--dark-text-primary);
}

/* ----- UTILITY CLASSES ----- */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.section-title {
  font-size: clamp(2rem, 5vw, 2.5rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 2rem;
  color: var(--light-text-primary);
}

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

.section-subtitle {
  text-align: center;
  color: var(--light-text-secondary);
  margin-top: -1.5rem;
  margin-bottom: 3rem;
  font-size: clamp(1rem, 2.5vw, 1.1rem);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Grid systems */
.grid-4,
.grid-3,
.grid-auto {
  display: grid;
  gap: 2rem;
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr));
}

/* Cards with centered text */
.card {
  background: var(--light-card);
  border-radius: 28px;
  border: 1px solid var(--light-border);
  padding: 2rem 1.5rem;
  box-shadow: var(--light-shadow);
  transition: transform 0.2s;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.dark-mode .card {
  background: var(--dark-card);
  border-color: var(--dark-border);
}

.card:hover {
  transform: translateY(-5px);
}

.card h3 {
  margin-bottom: 0.8rem;
  width: 100%;
}

.card p {
  color: var(--light-text-secondary);
  width: 100%;
}

.icon-lg {
  width: 70px;
  height: 70px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
  color: var(--light-accent);
  font-size: 2rem;
}

.dark-mode .icon-lg {
  background: rgba(96, 165, 250, 0.15);
  color: var(--dark-accent);
}

/* ----- HEADER ----- */
.header {
  background: var(--light-header-bg);
  backdrop-filter: blur(12px);
  /*border-bottom: 1px solid var(--light-border);*/
  padding: 0.8rem var(--container-padding);
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.fix-header {
  width: 100%;
  background: var(--light-header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--light-border);
}

.dark-mode .header,.dark-mode .fix-header {
  background: var(--dark-header-bg);
  border-bottom-color: var(--dark-border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: clamp(1.4rem, 4vw, 1.8rem);
  font-weight: 700;
  text-decoration: none;
  color: inherit;
}

.logo i {
  color: var(--light-success);
  font-size: 1.8rem;
}

.dark-mode .logo i {
  color: var(--dark-success);
}

.nav-buttons {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.nav-btn {
  padding: 0.6rem 1.4rem;
  border-radius: 40px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid var(--light-border);
  background: var(--light-surface);
  color: var(--light-text-primary);
  cursor: pointer;
  transition: 0.2s;
  white-space: nowrap;
  text-decoration: none;
  display: inline-block;
}

.dark-mode .nav-btn {
  background: var(--dark-surface);
  color: var(--dark-text-primary);
  border-color: var(--dark-border);
}

.nav-btn:hover {
  background: var(--light-accent);
  color: white;
  border-color: var(--light-accent);
}

.nav-btn.signup {
  background: var(--light-success);
  color: white;
  border: none;
}

.nav-btn.signup:hover {
  background: #0d9668;
}

.theme-toggle-header {
  width: 44px;
  height: 44px;
  border-radius: 40px;
  background: var(--light-surface);
  border: 1px solid var(--light-border);
  color: var(--light-text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: 0.2s;
  font-size: 1.2rem;
}

.dark-mode .theme-toggle-header {
  background: var(--dark-surface);
  border-color: var(--dark-border);
  color: var(--dark-text-primary);
}

.theme-toggle-header:hover {
  background: var(--light-accent);
  color: white;
  border-color: var(--light-accent);
}

/* ----- HERO SECTION ----- */
.hero {
  padding: clamp(2.5rem, 8vw, 4rem) var(--container-padding);
  background: linear-gradient(145deg, rgba(59, 130, 246, 0.03), rgba(16, 185, 129, 0.03));
}

.hero-container {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 3rem;
}

.hero-content {
  flex: 1 1 400px;
}

.hero-badge {
  display: inline-block;
  background: rgba(16, 185, 129, 0.15);
  color: var(--light-success);
  padding: 0.4rem 1.2rem;
  border-radius: 40px;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.2rem, 6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero-title span {
  color: var(--light-success);
  display: block;
}

.hero-text {
  color: var(--light-text-secondary);
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  max-width: 550px;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-btn {
  padding: 1rem 2.2rem;
  border-radius: 60px;
  font-weight: 700;
  font-size: 1.1rem;
  border: none;
  cursor: pointer;
  transition: 0.2s;
}

.hero-btn.primary {
  background: var(--light-success);
  color: white;
  box-shadow: 0 10px 20px -5px rgba(16, 185, 129, 0.4);
}

.hero-btn.primary:hover {
  transform: scale(1.05);
  background: #0d9668;
}

.hero-btn.secondary {
  background: transparent;
  border: 1px solid var(--light-border);
  color: var(--light-text-primary);
}

.dark-mode .hero-btn.secondary {
  color: var(--dark-text-primary);
  border-color: var(--dark-border);
}

.hero-btn.secondary:hover {
  background: var(--light-accent);
  color: white;
  border-color: var(--light-accent);
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.stat-item .stat-number {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--light-accent);
}

.stat-item .stat-label {
  color: var(--light-text-secondary);
  font-size: 0.9rem;
}

.hero-image {
  flex: 1 1 300px;
  display: flex;
  justify-content: center;
}

.hero-image .placeholder-icon {
  font-size: 15vw;
  color: var(--light-accent);
  opacity: 0.7;
}

/* ----- ACHIEVEMENTS SECTION ----- */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 2rem;
  text-align: center;
}

.achievement-number {
  font-size: clamp(2.2rem, 5vw, 3rem);
  font-weight: 700;
  color: var(--light-success);
  margin-bottom: 0.5rem;
}

/* ----- WITHDRAWAL HISTORY ----- */
.withdrawals-list {
  background: var(--light-card);
  border-radius: 28px;
  border: 1px solid var(--light-border);
  max-width: 700px;
  margin: 0 auto;
  overflow: hidden;
}

.dark-mode .withdrawals-list {
  background: var(--dark-card);
  border-color: var(--dark-border);
}

.withdrawal-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--light-border);
}

.dark-mode .withdrawal-item {
  border-bottom-color: var(--dark-border);
}

.withdrawal-item:last-child {
  border-bottom: none;
}

.withdrawal-user {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}

.user-avatar {
  width: 40px;
  height: 40px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--light-accent);
  flex-shrink: 0;
}

.dark-mode .user-avatar {
  background: rgba(96, 165, 250, 0.15);
  color: var(--dark-accent);
}

.user-email {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 120px;
  color: var(--light-text-primary);
}

.dark-mode .user-email {
  color: var(--dark-text-primary);
}

.withdrawal-details {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.withdrawal-amount {
  font-weight: 700;
  color: var(--light-success);
  white-space: nowrap;
}

.dark-mode .withdrawal-amount {
  color: var(--dark-success);
}

.withdrawal-time {
  color: var(--light-text-secondary);
  font-size: 0.9rem;
  white-space: nowrap;
}

.dark-mode .withdrawal-time {
  color: var(--dark-text-secondary);
}

/* Mobile styles for withdrawal history */
@media (max-width: 550px) {
  .withdrawal-item {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  .withdrawal-user {
    width: 100%;
    justify-content: flex-start;
  }
  
  .withdrawal-details {
    width: 100%;
    justify-content: space-between;
    padding-left: 3.2rem;
  }
  
  .user-email {
    max-width: none;
    white-space: normal;
    word-break: break-all;
  }
}

/* ----- FAQ SECTION ----- */
.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.faq-item {
  background: var(--light-card);
  border-radius: 20px;
  border: 1px solid var(--light-border);
  padding: 1.8rem;
}

.dark-mode .faq-item {
  background: var(--dark-card);
  border-color: var(--dark-border);
}

.faq-question {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 1rem;
}

.faq-question i {
  color: var(--light-success);
  font-size: 1.4rem;
  flex-shrink: 0;
  line-height: 1;
}

.faq-answer {
  color: var(--light-text-secondary);
  margin-left: 2.4rem;
}

.dark-mode .faq-answer {
  color: var(--dark-text-secondary);
}

/* ----- CRYPTOCURRENCY GRID ----- */
.crypto-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.crypto-item {
  background: var(--light-card);
  border-radius: 24px;
  border: 1px solid var(--light-border);
  padding: 1.5rem 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  font-weight: 600;
  font-size: 1.1rem;
  transition: transform 0.2s;
}

.dark-mode .crypto-item {
  background: var(--dark-card);
  border-color: var(--dark-border);
  color: var(--dark-text-primary);
}

.crypto-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--light-shadow);
}

.crypto-item i {
  font-size: 2.8rem;
  color: var(--light-accent);
}

.dark-mode .crypto-item i {
  color: var(--dark-accent);
}

.crypto-item img {
  width: 50px;
  height: 50px;
}

/* ----- MODAL ----- */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  align-items: center;
  justify-content: center;
  z-index: 3000;
  padding: 1rem;
}

.modal.active {
  display: flex;
}

.modal-box {
  background: var(--light-surface);
  max-width: 450px;
  width: 100%;
  padding: 2rem 1.5rem;
  border-radius: 32px;
  border: 1px solid var(--light-border);
  max-height: 90vh;
  overflow-y: auto;
}

.dark-mode .modal-box {
  background: var(--dark-surface);
  border-color: var(--dark-border);
}

.modal-close {
  float: right;
  font-size: 2rem;
  cursor: pointer;
  color: var(--light-text-secondary);
}

.dark-mode .modal-close {
  color: var(--dark-text-secondary);
}

.modal-tabs {
  display: flex;
  gap: 0.5rem;
  margin: 2rem 0 1.5rem;
  border-bottom: 1px solid var(--light-border);
  padding-bottom: 1rem;
}

.dark-mode .modal-tabs {
  border-bottom-color: var(--dark-border);
}

.tab-btn {
  flex: 1;
  background: none;
  border: none;
  font-size: 1.2rem;
  font-weight: 600;
  padding: 0.5rem;
  cursor: pointer;
  color: var(--light-text-secondary);
  border-radius: 12px;
}

.dark-mode .tab-btn {
  color: var(--dark-text-secondary);
}

.tab-btn.active {
  color: var(--light-accent);
  background: rgba(59, 130, 246, 0.1);
}

.dark-mode .tab-btn.active {
  color: var(--dark-accent);
  background: rgba(96, 165, 250, 0.15);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.input-group {
  margin-bottom: 1.5rem;
}

.input-group label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 600;
  color: var(--light-text-secondary);
}

.dark-mode .input-group label {
  color: var(--dark-text-secondary);
}

.input-group input {
  width: 100%;
  padding: 0.9rem 1.2rem;
  border-radius: 30px;
  border: 1px solid var(--light-border);
  background: rgba(0, 0, 0, 0.02);
  font-size: 1rem;
  color: inherit;
}

.dark-mode .input-group input {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--dark-border);
  color: var(--dark-text-primary);
}

.g-recaptcha {
  margin: 1.5rem 0;
  display: flex;
  justify-content: center;
  transform: scale(0.9);
}

.modal-btn {
  width: 100%;
  padding: 0.9rem;
  border-radius: 40px;
  border: none;
  background: var(--light-success);
  color: white;
  font-weight: 700;
  font-size: 1.1rem;
  cursor: pointer;
  margin-bottom: 1.2rem;
}

.create-account-link {
  text-align: center;
  color: var(--light-text-secondary);
  font-size: 0.9rem;
}

.dark-mode .create-account-link {
  color: var(--dark-text-secondary);
}

.create-account-link a {
  color: var(--light-accent);
  text-decoration: none;
  font-weight: 600;
}

/* ----- PAGE STYLES (Privacy & Terms) ----- */
.privacy-section,
.terms-section {
  padding: var(--section-spacing) 0;
}

.page-title {
  font-size: clamp(2.2rem, 6vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--light-text-primary);
  display: flex;
  align-items: center;
  gap: 1rem;
}

.dark-mode .page-title {
  color: var(--dark-text-primary);
}

.page-title i {
  color: var(--light-success);
  font-size: 2.5rem;
}

.last-updated {
  color: var(--light-text-secondary);
  margin-bottom: 3rem;
  font-style: italic;
  border-bottom: 1px solid var(--light-border);
  padding-bottom: 1rem;
}

.dark-mode .last-updated {
  color: var(--dark-text-secondary);
  border-bottom-color: var(--dark-border);
}

.policy-card,
.terms-card {
  background: var(--light-card);
  border-radius: 32px;
  border: 1px solid var(--light-border);
  padding: 2.5rem;
  box-shadow: var(--light-shadow);
}

.dark-mode .policy-card,
.dark-mode .terms-card {
  background: var(--dark-card);
  border-color: var(--dark-border);
}

.policy-section,
.terms-section-block {
  margin-bottom: 2.5rem;
}

.policy-section:last-child,
.terms-section-block:last-child {
  margin-bottom: 0;
}

.policy-section h2,
.terms-section-block h2 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 1.2rem;
  color: var(--light-accent);
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.dark-mode .policy-section h2,
.dark-mode .terms-section-block h2 {
  color: var(--dark-accent);
}

.policy-section h2 i,
.terms-section-block h2 i {
  font-size: 1.8rem;
}

.policy-section h3,
.terms-section-block h3 {
  font-size: 1.3rem;
  font-weight: 600;
  margin: 1.5rem 0 1rem;
  color: var(--light-text-primary);
}

.dark-mode .policy-section h3,
.dark-mode .terms-section-block h3 {
  color: var(--dark-text-primary);
}

.policy-section p,
.terms-section-block p {
  margin-bottom: 1.2rem;
  color: var(--light-text-secondary);
}

.dark-mode .policy-section p,
.dark-mode .terms-section-block p {
  color: var(--dark-text-secondary);
}

.policy-section ul,
.policy-section ol,
.terms-section-block ul,
.terms-section-block ol {
  margin: 1rem 0 1.5rem 2rem;
  color: var(--light-text-secondary);
}

.dark-mode .policy-section ul,
.dark-mode .policy-section ol,
.dark-mode .terms-section-block ul,
.dark-mode .terms-section-block ol {
  color: var(--dark-text-secondary);
}

.policy-section li,
.terms-section-block li {
  margin-bottom: 0.5rem;
}

.policy-section a,
.terms-section-block a {
  color: var(--light-accent);
  text-decoration: none;
}

.policy-section a:hover,
.terms-section-block a:hover {
  text-decoration: underline;
}

.dark-mode .policy-section a,
.dark-mode .terms-section-block a {
  color: var(--dark-accent);
}

.highlight-box {
  background: rgba(59, 130, 246, 0.05);
  border-left: 4px solid var(--light-accent);
  padding: 1.5rem;
  border-radius: 12px;
  margin: 1.5rem 0;
}

.dark-mode .highlight-box {
  background: rgba(96, 165, 250, 0.1);
  border-left-color: var(--dark-accent);
}

/* ----- FOOTER ----- */
.footer {
  background: var(--light-card);
  border-top: 1px solid var(--light-border);
  padding: 3rem var(--container-padding) 2rem;
  margin-top: 2rem;
}

.dark-mode .footer {
  background: var(--dark-card);
  border-top-color: var(--dark-border);
}

.footer-content {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 2rem;
}

.footer-col h4 {
  margin-bottom: 1.2rem;
  font-size: 1.1rem;
  color: var(--light-text-primary);
}

.dark-mode .footer-col h4 {
  color: var(--dark-text-primary);
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 0.6rem;
  color: var(--light-text-secondary);
}

.dark-mode .footer-col li {
  color: var(--dark-text-secondary);
}

.footer-col a {
  color: inherit;
  text-decoration: none;
}

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

.dark-mode .footer-col a:hover {
  color: var(--dark-accent);
}

.footer-bottom {
  text-align: center;
  padding-top: 3rem;
  color: var(--light-text-secondary);
  font-size: 0.9rem;
}

.dark-mode .footer-bottom {
  color: var(--dark-text-secondary);
}

/* ----- RESPONSIVE STYLES ----- */
@media (max-width: 700px) {
  
  .policy-card,
  .terms-card {
    padding: 1.8rem;
  }
  
  .page-title {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .policy-section h2,
  .terms-section-block h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 600px) {
  .hero-buttons .hero-btn {
    width: 100%;
    text-align: center;
  }
  
  .crypto-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 380px) {
  .crypto-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1280px) {
  .header {
    max-width: 1280px;
    margin: auto;
  }
}