/* public/css/style.css */
@import url('https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@400;500;600;700&display=swap');

:root {
  --bg-dark: #0f172a;
  --bg-darker: #020617;
  --bg-card: rgba(30, 41, 59, 0.7);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --success: #10b981;
  --success-hover: #059669;
  --border: rgba(255, 255, 255, 0.1);
  --glass-bg: rgba(15, 23, 42, 0.6);
  --glass-border: rgba(255, 255, 255, 0.05);
}

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

body {
  font-family: 'Hind Siliguri', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
}

.text-gradient {
  background: linear-gradient(135deg, #60a5fa, #34d399);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* Layout & Containers */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

section {
  padding: 5rem 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
  gap: 0.5rem;
}

.btn-primary {
  background-color: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px 0 rgba(59, 130, 246, 0.39);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn-success {
  background-color: var(--success);
  color: #fff;
  box-shadow: 0 4px 14px 0 rgba(16, 185, 129, 0.39);
}

.btn-success:hover {
  background-color: var(--success-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-outline {
  background-color: transparent;
  color: #fff;
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.2);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 1rem 0;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  z-index: 50;
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

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

/* Hero Section */
.hero {
  padding: 8rem 0 5rem;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at top center, #1e293b 0%, var(--bg-dark) 100%);
}

.hero-bg-glow {
  position: absolute;
  top: -10%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, rgba(0,0,0,0) 70%);
  z-index: 0;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 992px) {
  .hero .container {
    grid-template-columns: 1fr 1fr;
  }
}

.hero-content h1 {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
}

@media (min-width: 768px) {
  .hero-content h1 {
    font-size: 3.5rem;
  }
}

.hero-content p {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  max-width: 500px;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 640px) {
  .hero-actions {
    flex-direction: row;
  }
}

.hero-image {
  position: relative;
  display: flex;
  justify-content: center;
}

.phone-mockup {
  width: 280px;
  height: 580px;
  background: var(--bg-darker);
  border-radius: 40px;
  border: 12px solid #334155;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.phone-screen {
  flex: 1;
  background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.phone-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.phone-balance-card {
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  border-radius: 1rem;
  padding: 1.25rem;
  color: white;
  margin-bottom: 1rem;
}

.phone-balance-card .label {
  font-size: 0.875rem;
  opacity: 0.9;
}

.phone-balance-card .amount {
  font-size: 1.75rem;
  font-weight: bold;
  margin-top: 0.25rem;
}

.phone-action-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.phone-btn {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 0.75rem;
  padding: 1rem 0.5rem;
  text-align: center;
  font-size: 0.875rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.phone-btn i {
  color: #60a5fa;
}

.phone-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.phone-list-item {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 0.5rem;
  padding: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.phone-list-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.2);
  color: var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
}

.phone-list-content {
  flex: 1;
}

.phone-list-title {
  font-size: 0.875rem;
  font-weight: 600;
}

.phone-list-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.phone-list-amount {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--success);
}

/* Cards & Grids */
.grid-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .grid-cards {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--glass-border);
  border-radius: 1rem;
  padding: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  backdrop-filter: blur(10px);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
  border-color: rgba(59, 130, 246, 0.3);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.section-title {
  text-align: center;
  font-size: 2rem;
  margin-bottom: 1rem;
}

.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 3rem;
}

/* How It Works - Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 24px;
  width: 2px;
  background: var(--border);
}

@media (min-width: 768px) {
  .timeline::before {
    left: 50%;
    transform: translateX(-50%);
  }
}

.timeline-item {
  display: flex;
  gap: 1.5rem;
  position: relative;
  flex-direction: column;
}

@media (min-width: 768px) {
  .timeline-item {
    flex-direction: row;
    align-items: center;
  }
  
  .timeline-item:nth-child(even) {
    flex-direction: row-reverse;
  }
}

.timeline-number {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
  flex-shrink: 0;
  z-index: 2;
  box-shadow: 0 0 0 6px var(--bg-dark);
  position: absolute;
  left: 0;
  top: 0;
}

@media (min-width: 768px) {
  .timeline-number {
    position: static;
    margin: 0 auto;
  }
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem;
  flex: 1;
  margin-left: 4rem;
}

@media (min-width: 768px) {
  .timeline-content {
    margin-left: 0;
    width: calc(50% - 3rem);
    flex: none;
  }
}

.timeline-content h3 {
  margin-bottom: 0.5rem;
  color: #fff;
  font-size: 1.25rem;
}

.timeline-content p {
  color: var(--text-muted);
}

/* Features */
.features-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 992px) {
  .features-split {
    grid-template-columns: 1fr 1fr;
  }
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-text h4 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.feature-text p {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* Payment Methods */
.payment-methods {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
}

.payment-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 1.5rem 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  transition: all 0.3s ease;
  min-width: 150px;
}

.payment-card:hover {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.2);
  transform: translateY(-5px);
}

.payment-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.5rem;
}

.payment-card span {
  font-weight: 600;
}

.bg-bkash { background: #e2136e; color: white; }
.bg-nagad { background: #f04e23; color: white; }
.bg-rocket { background: #8c1515; color: white; }
.bg-upay { background: #0066cc; color: white; }

/* Download Section */
.download-section {
  background: linear-gradient(135deg, var(--bg-darker) 0%, #1e293b 100%);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.download-box {
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 1.5rem;
  padding: 3rem 2rem;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.instruction-list {
  text-align: left;
  margin: 2rem auto;
  max-width: 500px;
  background: var(--bg-darker);
  padding: 1.5rem;
  border-radius: 1rem;
  border: 1px solid var(--border);
  list-style: none;
}

.instruction-list li {
  margin-bottom: 1rem;
  display: flex;
  gap: 1rem;
  color: var(--text-muted);
}
.instruction-list li:last-child {
  margin-bottom: 0;
}

.instruction-list .step {
  color: var(--primary);
  font-weight: bold;
  background: rgba(59, 130, 246, 0.1);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* Trust Section */
.trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

@media (min-width: 768px) {
  .trust-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.trust-card {
  text-align: center;
  padding: 2rem;
  background: var(--bg-card);
  border-radius: 1rem;
  border: 1px solid var(--border);
}

.trust-icon {
  font-size: 2.5rem;
  color: var(--success);
  margin-bottom: 1rem;
}

.trust-card h3 {
  margin-bottom: 0.5rem;
}

.trust-card p {
  color: var(--text-muted);
}

/* FAQ */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  overflow: hidden;
}

.faq-question {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(255,255,255,0.02);
}

.faq-question:hover {
  background: rgba(255,255,255,0.05);
}

.faq-answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  color: var(--text-muted);
}

.faq-item.active .faq-answer {
  padding: 1.25rem 1.5rem;
  max-height: 300px;
  border-top: 1px solid var(--border);
}

.faq-icon {
  transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

@media (min-width: 640px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 1rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.contact-card.whatsapp {
  border-top: 4px solid #25D366;
}

.contact-card.imo {
  border-top: 4px solid #56CCF2;
}

.contact-icon {
  font-size: 3rem;
}

.whatsapp .contact-icon { color: #25D366; }
.imo .contact-icon { color: #56CCF2; }

/* Footer */
footer {
  background: var(--bg-darker);
  padding: 3rem 0 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-content {
  margin-bottom: 2rem;
}

.footer-logo {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
  display: inline-block;
}

.footer-logo span {
  color: var(--primary);
}

.footer-info {
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.copyright {
  color: rgba(148, 163, 184, 0.5);
  font-size: 0.875rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
  animation: fadeIn 0.8s ease forwards;
}

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }