/* ===== MODERN 2026 CRYPTO STANDARD DESIGN - PRODUCTION ===== */

/* CSS Variables */
:root {
  --primary-color: #3498db;
  --primary-dark: #2980b9;
  --primary-light: #5dade2;
  --secondary-color: #2c3e50;
  --accent-color: #1abc9c;
  --accent-hover: #16a085;
  
  /* Dark Theme Colors - Original */
  --dark-base: #0d203a;
  --dark-lighter: #152a42;
  --dark-text-primary: #ffffff;
  --dark-text-secondary: #b8c5d6;
  --dark-text-muted: #7f8b99;
  
  /* Light Theme Colors */
  --light-bg: #ffffff;
  --light-surface: #f8f9fa;
  --light-surface-light: #f0f2f7;
  --light-text-primary: #1a1a2e;
  --light-text-secondary: #4a5568;
  --light-text-muted: #71829f;
  --light-border: #e0e5ed;
  
  --success-color: #27ae60;
  --error-color: #e74c3c;
  --warning-color: #f39c12;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--light-text-primary);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
}

/* ===== MAIN HEADER (DARK BASE - #0d203a) ===== */
.site-header {
  background: linear-gradient(135deg, var(--dark-base) 0%, #0a1829 100%);
  border-bottom: 1px solid rgba(61, 144, 219, 0.15);
  padding: 3rem 0;
  animation: fadeIn 0.8s ease-out;
  position: relative;
  overflow: hidden;
}

.site-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(61, 144, 219, 0.3), transparent);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  text-align: center;
}

.logo {
  height: 80px;
  width: 80px;
  object-fit: contain;
  transition: transform 0.3s ease;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.3));
}

.logo:hover {
  transform: scale(1.05);
}

.header-info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  align-items: center;
}

.header-info h1 {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--dark-text-primary);
  letter-spacing: -0.5px;
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.2);
}

.header-info p {
  font-size: 1.05rem;
  color: var(--dark-text-secondary);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  font-weight: 700;
}

/* ===== BRAND AUTHORITY STRIP (LIGHTER DARK) ===== */
.brand-strip {
  background: linear-gradient(135deg, var(--dark-lighter) 0%, #1d3554 100%);
  border-bottom: 1px solid rgba(61, 144, 219, 0.2);
  padding: 2.5rem 0;
  animation: slideDown 0.6s ease-out 0.2s both;
  position: relative;
}

.brand-strip::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(61, 144, 219, 0.3), transparent);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.brand-strip .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.brand-label {
  font-size: 0.9rem;
  color: var(--dark-text-muted);
  text-transform: uppercase;
  letter-spacing: 1.3px;
  font-weight: 700;
}

.logos-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.logo-item {
  height: 60px;
  width: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.08);
  border: 2px solid rgba(61, 144, 219, 0.2);
  border-radius: 12px;
  padding: 10px;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
  cursor: pointer;
  text-decoration: none;
}

.logo-item:hover {
  transform: translateY(-6px);
  background: rgba(61, 144, 219, 0.15);
  border-color: rgba(61, 144, 219, 0.4);
  box-shadow: 0 12px 24px rgba(52, 152, 219, 0.25);
}

.logo-item img {
  height: 100%;
  width: 100%;
  object-fit: contain;
  transition: filter 0.3s ease;
  filter: grayscale(0.8) brightness(1.1);
}

.logo-item:hover img {
  filter: grayscale(0) brightness(1.2);
}

/* ===== MAIN CONTENT (LIGHT) ===== */
.content {
  flex: 1;
  background: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
  padding: 3rem 0;
  animation: fadeIn 0.8s ease-out 0.4s both;
}

.hero-section {
  text-align: center;
  margin-bottom: 3rem;
}

.hero-section h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--light-text-primary);
  line-height: 1.3;
}

.subtitle {
  font-size: 1.05rem;
  color: var(--light-text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== VERIFICATION CARD ===== */
.verification-card {
  background: #ffffff;
  border: 1px solid var(--light-border);
  border-radius: 16px;
  padding: 2.5rem;
  margin-bottom: 3rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  animation: slideUp 0.6s ease-out 0.6s both;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* TIMER SECTION */
.timer-section {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: linear-gradient(135deg, rgba(243, 156, 18, 0.08) 0%, rgba(243, 156, 18, 0.05) 100%);
  border: 1px solid rgba(243, 156, 18, 0.2);
  border-radius: 12px;
  padding: 1.2rem;
  margin-bottom: 2rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(243, 156, 18, 0.2);
  }
  50% {
    box-shadow: 0 0 0 8px rgba(243, 156, 18, 0.08);
  }
}

.timer-icon {
  font-size: 1.4rem;
  animation: spin 3s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.timer-text {
  font-size: 1.05rem;
  color: var(--light-text-secondary);
  font-weight: 600;
}

#timerDisplay {
  font-weight: 800;
  color: var(--warning-color);
  font-variant-numeric: tabular-nums;
  font-size: 1.1rem;
}

/* CAPTCHA SECTION */
.captcha-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.captcha-section h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--light-text-primary);
}

.challenge-text {
  font-size: 1.1rem;
  color: var(--light-text-secondary);
  font-weight: 600;
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(52, 152, 219, 0.08) 0%, rgba(52, 152, 219, 0.05) 100%);
  border-left: 4px solid var(--primary-color);
  border-radius: 10px;
  line-height: 1.6;
}

/* INPUT GROUP */
.input-group {
  position: relative;
  display: flex;
  align-items: center;
}

#verifyInput {
  width: 100%;
  padding: 1.1rem 1.3rem;
  background: #ffffff;
  border: 2px solid var(--light-border);
  border-radius: 10px;
  color: var(--light-text-primary);
  font-size: 1.05rem;
  font-family: var(--font-family);
  transition: all 0.3s ease;
}

#verifyInput:focus {
  outline: none;
  border-color: var(--primary-color);
  background: linear-gradient(135deg, #ffffff 0%, rgba(52, 152, 219, 0.02) 100%);
  box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.15);
}

#verifyInput::placeholder {
  color: var(--light-text-muted);
}

.char-count {
  position: absolute;
  right: 1.3rem;
  font-size: 0.85rem;
  color: var(--light-text-muted);
  font-weight: 600;
}

/* PROCEED BUTTON */
.proceed-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  width: 100%;
  padding: 1.15rem 1.5rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
  color: white;
  border: none;
  border-radius: 10px;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.proceed-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.2);
  transition: left 0.3s ease;
  z-index: -1;
}

.proceed-button:hover::before {
  left: 0;
}

.proceed-button:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(52, 152, 219, 0.4);
}

.proceed-button:active {
  transform: translateY(-2px);
}

.arrow {
  font-size: 1.3rem;
  transition: transform 0.3s ease;
  margin-left: 0.3rem;
}

.proceed-button:hover .arrow {
  transform: translateX(6px);
}

/* MESSAGE STATES */
.error-message {
  color: var(--error-color);
  font-size: 0.95rem;
  min-height: 1.4rem;
  display: none;
  animation: slideIn 0.3s ease-out;
  font-weight: 600;
}

.error-message.show {
  display: block;
}

.success-message {
  color: var(--success-color);
  font-size: 0.95rem;
  min-height: 1.4rem;
  display: none;
  animation: slideIn 0.3s ease-out;
  font-weight: 600;
}

.success-message.show {
  display: block;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* DISCLAIMER */
.disclaimer {
  background: linear-gradient(135deg, rgba(243, 156, 18, 0.08) 0%, rgba(243, 156, 18, 0.05) 100%);
  border: 1px solid rgba(243, 156, 18, 0.2);
  border-radius: 10px;
  padding: 1.3rem;
  margin-top: 1.5rem;
}

.disclaimer p {
  font-size: 0.9rem;
  color: var(--light-text-secondary);
  line-height: 1.6;
  margin: 0;
}

.disclaimer strong {
  color: var(--warning-color);
  font-weight: 700;
}

/* ===== INFO SECTION ===== */
.info-section {
  padding: 2rem 0;
  animation: fadeIn 0.8s ease-out 0.8s both;
  border-bottom: 1px solid rgba(61, 144, 219, 0.1);
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.info-card {
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
  border: 1px solid var(--light-border);
  border-radius: 14px;
  padding: 2rem;
  text-align: center;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}

.info-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary-color);
  box-shadow: 0 12px 30px rgba(52, 152, 219, 0.15);
}

.info-icon {
  font-size: 2.8rem;
  margin-bottom: 1rem;
  display: block;
  transition: transform 0.3s ease;
}

.info-card:hover .info-icon {
  transform: scale(1.15);
}

.info-card h4 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  color: var(--light-text-primary);
  font-weight: 700;
}

.info-card p {
  font-size: 0.95rem;
  color: var(--light-text-secondary);
  margin: 0;
  line-height: 1.5;
}

/* ===== FAQ SECTION (SAME AS BRAND STRIP - FULL WIDTH) ===== */
.faq-section {
  background: linear-gradient(135deg, var(--dark-lighter) 0%, #1d3554 100%);
  padding: 3rem 0;
  animation: fadeIn 0.8s ease-out 1s both;
  position: relative;
  border-top: 1px solid rgba(61, 144, 219, 0.2);
  width: 100%;
}

.faq-section::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(61, 144, 219, 0.3), transparent);
}

.faq-section .container {
  color: var(--dark-text-primary);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.faq-item {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(61, 144, 219, 0.2);
  border-radius: 12px;
  padding: 1.8rem;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.faq-item:hover {
  transform: translateY(-8px);
  background: rgba(61, 144, 219, 0.15);
  border-color: rgba(61, 144, 219, 0.4);
  box-shadow: 0 10px 25px rgba(52, 152, 219, 0.2);
}

.faq-item h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark-text-primary);
  margin-bottom: 1rem;
}

.faq-item p {
  font-size: 0.95rem;
  color: var(--dark-text-secondary);
  margin-bottom: 0.8rem;
  line-height: 1.5;
}

.faq-item ul {
  margin: 0;
  padding-left: 1.5rem;
  list-style-position: inside;
}

.faq-item li {
  font-size: 0.95rem;
  color: var(--dark-text-secondary);
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

.faq-item li:last-child {
  margin-bottom: 0;
}

/* ===== FOOTER (DARK BASE - #0d203a) ===== */
.site-footer {
  background: linear-gradient(135deg, var(--dark-base) 0%, #0a1829 100%);
  border-top: 1px solid rgba(61, 144, 219, 0.15);
  padding: 2rem 0;
  margin-top: 0;
  text-align: center;
  position: relative;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(61, 144, 219, 0.3), transparent);
}

.site-footer p {
  font-size: 0.9rem;
  color: var(--dark-text-muted);
  margin: 0;
}

.site-footer a {
  color: var(--primary-light);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.3s ease;
}

.site-footer a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
  .hero-section h2 {
    font-size: 1.5rem;
  }

  .header-info h1 {
    font-size: 1.8rem;
  }

  .logo {
    height: 65px;
    width: 65px;
  }

  .verification-card {
    padding: 1.8rem;
  }

  .logos-grid {
    gap: 1.5rem;
  }

  .logo-item {
    height: 55px;
    width: 55px;
  }

  .proceed-button {
    padding: 0.95rem 1.2rem;
    font-size: 1rem;
  }

  .challenge-text {
    font-size: 1rem;
    padding: 1.2rem;
  }

  .timer-section {
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem;
  }

  .timer-text {
    font-size: 0.95rem;
  }

  .info-grid {
    gap: 1.2rem;
  }

  .info-card {
    padding: 1.5rem;
  }

  .info-icon {
    font-size: 2.2rem;
  }

  .faq-grid {
    gap: 1.5rem;
  }

  .faq-item {
    padding: 1.5rem;
  }

  .content {
    padding: 2rem 0;
  }

  .site-header {
    padding: 2rem 0;
  }

  .brand-strip {
    padding: 2rem 0;
  }

  .faq-section {
    padding: 2rem 0;
  }
}

@media (max-width: 480px) {
  .hero-section h2 {
    font-size: 1.25rem;
    line-height: 1.3;
  }

  .header-info h1 {
    font-size: 1.5rem;
  }

  .header-info p {
    font-size: 0.85rem;
  }

  .verification-card {
    padding: 1.5rem;
    margin-bottom: 2rem;
  }

  .logos-grid {
    gap: 1rem;
  }

  .logo-item {
    height: 50px;
    width: 50px;
  }

  .challenge-text {
    font-size: 0.95rem;
    padding: 1rem;
  }

  .brand-label {
    font-size: 0.8rem;
  }

  .subtitle {
    font-size: 0.95rem;
  }

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

  .faq-grid {
    grid-template-columns: 1fr;
    gap: 1.2rem;
  }

  .faq-item {
    padding: 1.2rem;
  }

  .site-header {
    padding: 1.5rem 0;
  }

  .brand-strip {
    padding: 1.5rem 0;
  }

  .faq-section {
    padding: 1.5rem 0;
  }

  .header-content {
    gap: 1rem;
  }

  .logo {
    height: 60px;
    width: 60px;
  }

  .proceed-button {
    padding: 0.9rem 1rem;
    font-size: 0.95rem;
  }

  .captcha-section h3 {
    font-size: 1.05rem;
  }

  #verifyInput {
    font-size: 1rem;
    padding: 0.95rem 1rem;
  }

  .timer-text {
    font-size: 0.9rem;
  }

  #timerDisplay {
    font-size: 1rem;
  }

  .faq-item h3 {
    font-size: 1rem;
  }

  .faq-item p {
    font-size: 0.9rem;
  }

  .faq-item li {
    font-size: 0.9rem;
  }
}

@media (max-width: 360px) {
  .header-info h1 {
    font-size: 1.3rem;
  }

  .hero-section h2 {
    font-size: 1.1rem;
  }

  .logo {
    height: 55px;
    width: 55px;
  }

  .logo-item {
    height: 45px;
    width: 45px;
  }

  .verification-card {
    padding: 1.2rem;
    border-radius: 12px;
  }

  .info-icon {
    font-size: 2rem;
  }

  .info-card h4 {
    font-size: 1rem;
  }

  .info-card p {
    font-size: 0.85rem;
  }

  .faq-item h3 {
    font-size: 0.95rem;
  }

  .faq-item p {
    font-size: 0.85rem;
  }

  .faq-item li {
    font-size: 0.85rem;
  }
}