/* ========================================
   PLOUTOS REGISTRATION PAGE - DESIGN SYSTEM COMPLIANT
   Version: 2.0 - Redesigned October 2025
   ======================================== */

/* ========================================
   DESIGN SYSTEM VARIABLES
   ======================================== */
:root {
  /* Primary Colors */
  --primary-blue: #37a3fe;
  --primary-dark: #0194fc;
  --primary-darker: #2563eb;

  /* Secondary Colors */
  --secondary-green: #47dba7;
  --secondary-green-alt: #1fd5a4;
  --secondary-yellow: #ffc107;
  --secondary-purple: #e230cc;

  /* Background Colors */
  --bg-primary: #0B0B47;
  --bg-secondary: #06174f;
  --bg-card: #081b5e;

  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a2bbd2;
  --text-muted: #64748b;
  --text-dark: #1e293b;

  /* Utility Colors */
  --success: #38a169;
  --error: #e53e3e;
  --info: #0ea5e9;
  --border: #e2e8f0;

  /* Spacing System (5px increments) */
  --spacing-xs: 5px;
  --spacing-sm: 10px;
  --spacing-md: 20px;
  --spacing-lg: 30px;
  --spacing-xl: 50px;

  /* Border Radius */
  --radius-small: 5px;
  --radius-medium: 10px;
  --radius-large: 16px;
  --radius-pill: 30px;
  --radius-circle: 100%;

  /* Shadows */
  --shadow-sm: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 32px 64px rgba(0, 0, 0, 0.12);
  --shadow-glow-blue: 0 4px 20px rgba(55, 163, 254, 0.25);

  /* Typography */
  --font-primary: 'Inter', sans-serif;
  --font-secondary: 'Raleway', sans-serif;
}

/* ========================================
   BASE STYLES
   ======================================== */
* {
  box-sizing: border-box;
}

.registration-body {
  margin: 0;
  padding: 0;
  font-family: var(--font-secondary);
  overflow-x: hidden;
}

/* ========================================
   PERFORMANCE OPTIMIZATIONS
   ======================================== */
.registration-section * {
  -webkit-transform: translateZ(0);
  transform: translateZ(0);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
}

/* ========================================
   REGISTRATION SECTION - HERO BACKGROUND
   ======================================== */
.registration-section {
  background: url('../images/hero/bg.png') center center no-repeat;
  background-size: cover;
  background-attachment: scroll;
  min-height: 100vh;
  position: relative;
  padding: var(--spacing-md) 0;
  display: flex;
  align-items: center;
}

/* Design System Gradient Overlay */
.registration-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(-9deg, #2a0365 30%, #03224a 70%);
  opacity: 0.95;
  z-index: 0;
}

.registration-section .container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
}

/* Shape Element */
.registration-section .shape {
  position: absolute;
  bottom: 0;
  left: 0;
  z-index: 1;
  opacity: 0.4;
}

.registration-section .shape img {
  width: 100%;
  height: auto;
}

/* ========================================
   FLOATING BACKGROUND ELEMENTS
   ======================================== */
.floating-elements {
  position: fixed;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.floating-particle {
  position: absolute;
  background: rgba(55, 163, 254, 0.1);
  border-radius: var(--radius-circle);
  animation: floatParticle 12s infinite linear;
}

.floating-particle:nth-child(1) {
  width: 20px;
  height: 20px;
  top: 20%;
  left: 10%;
  animation-delay: 0s;
}

.floating-particle:nth-child(2) {
  width: 15px;
  height: 15px;
  top: 60%;
  left: 80%;
  animation-delay: -3s;
}

.floating-particle:nth-child(3) {
  width: 25px;
  height: 25px;
  top: 80%;
  left: 20%;
  animation-delay: -6s;
}

.floating-particle:nth-child(4) {
  width: 18px;
  height: 18px;
  top: 30%;
  left: 70%;
  animation-delay: -9s;
}

@keyframes floatParticle {
  0% {
    transform: translateY(0px) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-100vh) rotate(360deg);
    opacity: 0;
  }
}

/* ========================================
   MOBILE HEADER
   ======================================== */
.mobile-header {
  display: block;
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  z-index: 100;
}

.mobile-header .language-selector select {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-small);
  color: var(--text-primary);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 14px;
  font-family: var(--font-primary);
  font-weight: 500;
  min-height: 44px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  touch-action: manipulation;
  transition: all 0.3s ease;
}

.mobile-header .language-selector select:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--primary-blue);
}

.mobile-header .language-selector select option {
  background: var(--bg-primary);
  color: var(--text-primary);
}

@media (min-width: 768px) {
  .mobile-header {
    top: var(--spacing-lg);
    right: var(--spacing-lg);
  }
}

/* ========================================
   REGISTRATION CARD
   ======================================== */
.registration-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-large);
  padding: var(--spacing-lg);
  width: 100%;
  max-width: 540px;
  margin: 0 auto;
  box-shadow: var(--shadow-md);
  transition: all 0.3s ease;
  position: relative;
  overflow: visible;
}

/* Top Accent Border - Design System Primary Color */
.registration-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-blue);
  border-radius: var(--radius-large) var(--radius-large) 0 0;
}

.registration-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* ========================================
   HEADER SECTION
   ======================================== */
.registration-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.logo-container {
  position: relative;
  display: inline-block;
  margin-bottom: var(--spacing-md);
}

.registration-logo {
  max-height: 70px;
  width: auto;
  filter: drop-shadow(0 2px 8px rgba(55, 163, 254, 0.15));
  transition: transform 0.3s ease;
  display: block;
  margin: 0 auto;
}

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

/* Ensure coin image looks good on all backgrounds */
.logo-container {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
  padding: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

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

.logo-text {
  font-size: 35px;
  font-weight: 900;
  font-family: var(--font-primary);
  background: linear-gradient(135deg, var(--primary-blue) 0%, #4facfe 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 1px;
}

.registration-header h2 {
  color: var(--text-dark);
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: 30px;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.verification-header h2 {
  color: var(--primary-blue) !important;
}

.registration-header p {
  color: var(--text-muted);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.verification-subtitle {
  font-size: 14px !important;
  color: var(--text-muted) !important;
}

#verification-email {
  color: var(--primary-blue);
  font-weight: 600;
}

/* ========================================
   VALUE PROPOSITION
   ======================================== */
.value-proposition {
  display: flex;
  justify-content: space-around;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md) 0;
  border-top: 1px solid #f1f5f9;
  border-bottom: 1px solid #f1f5f9;
}

.benefit-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  flex: 1;
}

.benefit-item i {
  color: var(--primary-blue);
  font-size: 20px;
}

.benefit-item span {
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  text-align: center;
  line-height: 1.2;
  font-family: var(--font-primary);
}

/* ========================================
   REFERRAL NOTICE
   ======================================== */
.referral-notice {
  margin-bottom: var(--spacing-md);
  opacity: 0;
  transform: translateY(-10px);
  transition: all 0.5s ease;
}

.referral-notice.fade-in {
  opacity: 1;
  transform: translateY(0);
}

.referral-notice .alert {
  background: linear-gradient(135deg, #10b981 0%, #059669 50%, #047857 100%);
  color: var(--text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-medium);
  padding: var(--spacing-md);
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.25);
  position: relative;
  overflow: hidden;
  font-size: 14px;
  line-height: 1.5;
  border-left: 4px solid #34d399;
}

.referral-notice .alert i {
  font-size: 18px;
  margin-right: var(--spacing-sm);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.referral-notice .alert strong {
  font-weight: 700;
  font-size: 16px;
  font-family: var(--font-primary);
}

.referral-code-display {
  font-family: 'Courier New', monospace;
  background: rgba(255, 255, 255, 0.2);
  padding: 5px var(--spacing-sm);
  border-radius: var(--radius-small);
  display: inline-block;
  margin-top: var(--spacing-sm);
  font-size: 13px;
}

/* ========================================
   FORM ELEMENTS - DESIGN SYSTEM COMPLIANT
   ======================================== */
.form-group {
  margin-bottom: var(--spacing-md);
  position: relative;
}

.form-label {
  color: var(--text-dark);
  font-family: var(--font-primary);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-label i {
  color: var(--primary-blue);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(55, 163, 254, 0.1);
  border-radius: 6px;
  font-size: 12px;
  transition: all 0.3s ease;
}

.form-group:hover .form-label i {
  background: rgba(55, 163, 254, 0.2);
  transform: scale(1.1);
}

/* Input Fields - Design System Standard */
.form-control {
  border: 2px solid var(--border);
  border-radius: var(--radius-medium);
  padding: 17px 20px;
  font-size: 15px;
  font-weight: 500;
  font-family: var(--font-secondary);
  min-height: 52px;
  background: #ffffff;
  color: var(--text-dark);
  width: 100%;
  transition: all 0.3s ease;
  touch-action: manipulation;
}

.form-control::placeholder {
  color: var(--text-muted);
  font-weight: 400;
}

.form-control:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(55, 163, 254, 0.1);
  background: #ffffff;
  outline: none;
}

.form-control:hover:not(:focus) {
  border-color: rgba(55, 163, 254, 0.3);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* Validation States */
.form-control.is-valid {
  border-color: var(--success);
  background-color: rgba(240, 249, 244, 0.8);
  box-shadow: 0 0 0 3px rgba(56, 161, 105, 0.1);
}

.form-control.is-invalid {
  border-color: var(--error);
  background-color: rgba(254, 242, 242, 0.8);
  box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.1);
}

.invalid-feedback {
  display: block;
  margin-top: 5px;
  font-size: 14px;
  color: var(--error);
  font-weight: 500;
}

.valid-feedback {
  display: block;
  margin-top: 5px;
  font-size: 14px;
  color: var(--success);
  font-weight: 500;
}

/* Verified Email Input */
.verified-email {
  background: #f0f9ff !important;
  border-color: var(--success) !important;
  color: #0c4a6e !important;
  font-weight: 600 !important;
  cursor: not-allowed !important;
}

.text-success {
  color: var(--success) !important;
  font-size: 13px;
  margin-top: 5px;
  display: block;
}

.text-success i {
  margin-right: 5px;
}

/* ========================================
   PASSWORD INPUT
   ======================================== */
.password-input-container {
  position: relative;
}

.password-input-container .form-control {
  padding-right: 70px;
}

.password-show-toggle {
  position: absolute;
  right: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--primary-blue);
  cursor: pointer;
  padding: 5px var(--spacing-sm);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-primary);
  text-decoration: none;
  transition: color 0.3s ease;
  z-index: 10;
  min-height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.password-show-toggle:hover,
.password-show-toggle:focus {
  color: var(--primary-darker);
  outline: none;
}

.password-requirements {
  margin-top: 5px;
}

.password-requirements small {
  font-size: 13px;
  color: var(--text-muted);
}

/* ========================================
   VERIFICATION CODE INPUT
   ======================================== */
.verification-code-input {
  text-align: center !important;
  font-size: 24px !important;
  font-weight: 700 !important;
  letter-spacing: 8px !important;
  font-family: 'Courier New', monospace !important;
}

.code-timer {
  margin-top: var(--spacing-sm);
  text-align: center;
}

.code-timer span {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-primary);
}

#countdown {
  font-weight: 600;
  color: var(--primary-blue);
}

#countdown.expired {
  color: var(--error);
}

/* ========================================
   CHECKBOX - DESIGN SYSTEM COMPLIANT
   ======================================== */
.terms-container {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: var(--radius-medium);
  transition: all 0.3s ease;
}

.terms-container:hover {
  border-color: #cbd5e1;
  background: #f1f5f9;
}

.custom-checkbox {
  position: relative;
  flex-shrink: 0;
}

.form-check-input {
  width: 20px;
  height: 20px;
  margin: 0;
  position: absolute;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.checkbox-design {
  width: 20px;
  height: 20px;
  background: #ffffff;
  border: 2px solid #d1d5db;
  border-radius: var(--radius-small);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  cursor: pointer;
}

.check-icon {
  color: #ffffff;
  font-size: 12px;
  opacity: 0;
  transform: scale(0);
  transition: all 0.2s ease;
}

.form-check-input:checked + .checkbox-design {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
}

.form-check-input:checked + .checkbox-design .check-icon {
  opacity: 1;
  transform: scale(1);
}

.form-check-input:focus + .checkbox-design {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(55, 163, 254, 0.1);
}

.form-check-label {
  color: #334155;
  font-size: 14px;
  cursor: pointer;
  line-height: 1.5;
  margin: 0;
}

.terms-link {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border-bottom: 1px solid transparent;
}

.terms-link:hover {
  color: var(--primary-darker);
  border-bottom-color: var(--primary-darker);
}

/* ========================================
   BUTTONS - DESIGN SYSTEM COMPLIANT
   ======================================== */
.btn-register,
.btn-get-code,
.btn-verify {
  background: var(--primary-blue);
  border: none;
  border-radius: var(--radius-pill);
  padding: 17px 37px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-primary);
  color: var(--text-primary);
  width: 100%;
  transition: all 0.5s ease;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-glow-blue);
  min-height: 52px;
  cursor: pointer;
  text-transform: none;
  letter-spacing: 0;
}

/* Hover Effect - Design System Standard */
.btn-register::after,
.btn-get-code::after,
.btn-verify::after {
  position: absolute;
  content: '';
  top: 0;
  right: 0;
  height: 100%;
  width: 0;
  background: var(--text-primary);
  transition: 0.6s;
  z-index: -1;
  border-radius: var(--radius-pill);
}

.btn-register:hover::after,
.btn-get-code:hover::after,
.btn-verify:hover::after {
  left: 0;
  width: 100%;
}

.btn-register:hover,
.btn-get-code:hover,
.btn-verify:hover {
  color: var(--primary-blue);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(55, 163, 254, 0.35);
}

.btn-register:active,
.btn-get-code:active,
.btn-verify:active {
  transform: translateY(0);
}

.btn-register:disabled,
.btn-get-code:disabled,
.btn-verify:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

/* Button Icons */
.btn-text i,
.btn-loading i {
  margin-right: var(--spacing-sm);
}

.btn-loading {
  display: none;
}

/* Secondary Buttons */
.btn-outline-primary,
.btn-outline-secondary {
  border: 1px solid var(--primary-blue);
  background: transparent;
  color: var(--primary-blue);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-primary);
  transition: all 0.3s ease;
  min-height: 44px;
}

.btn-outline-secondary {
  border-color: var(--text-muted);
  color: var(--text-muted);
}

.btn-outline-primary:hover {
  background: var(--primary-blue);
  color: var(--text-primary);
}

.btn-outline-secondary:hover {
  background: var(--text-muted);
  color: var(--text-primary);
}

/* ========================================
   LOGIN LINK
   ======================================== */
.login-link {
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(55, 163, 254, 0.1);
  text-align: center;
  margin-top: var(--spacing-md);
}

.login-link p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 0;
}

.login-link a {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  font-family: var(--font-primary);
}

.login-link a:hover {
  color: var(--primary-darker);
  text-decoration: none;
}

/* ========================================
   RESEND SECTION
   ======================================== */
.resend-section {
  padding-top: var(--spacing-md);
  border-top: 1px solid rgba(55, 163, 254, 0.1);
  margin-top: var(--spacing-md);
}

.resend-section p {
  font-size: 14px;
  margin-bottom: var(--spacing-sm);
}

.resend-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.resend-info {
  margin-top: var(--spacing-sm);
}

.resend-info small {
  font-size: 12px;
  color: var(--text-muted);
}

.resend-info i {
  margin-right: 5px;
}

/* ========================================
   MESSAGE CONTAINER
   ======================================== */
.message-container {
  position: relative;
}

.alert {
  border-radius: var(--radius-medium);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  font-size: 14px;
  font-weight: 500;
}

.alert-success {
  background-color: #d4edda;
  border-color: #c3e6cb;
  color: #155724;
}

.alert-danger {
  background-color: #f8d7da;
  border-color: #f5c6cb;
  color: #721c24;
}

.alert-info {
  background-color: #cce7ff;
  border-color: #b3d9ff;
  color: #004085;
}

/* ========================================
   MODAL - DESIGN SYSTEM COMPLIANT
   ======================================== */
.modal-content {
  border-radius: var(--radius-large);
  border: none;
  box-shadow: var(--shadow-lg);
}

.modal-header {
  border-bottom: 1px solid var(--border);
  padding: var(--spacing-md) var(--spacing-lg);
}

.modal-header h5 {
  font-family: var(--font-primary);
  font-weight: 700;
  font-size: 20px;
  color: var(--text-dark);
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-body .text-primary {
  color: var(--primary-blue) !important;
}

.download-buttons .btn {
  border-radius: var(--radius-medium);
  padding: var(--spacing-sm) var(--spacing-md);
  margin: 5px;
}

/* ========================================
   ANIMATIONS
   ======================================== */
.fade-in {
  animation: fadeIn 0.5s ease-in-out;
}

.slide-up {
  animation: slideUp 0.5s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========================================
   RESPONSIVE BREAKPOINTS - DESIGN SYSTEM
   MOBILE-FIRST ENHANCED APPROACH
   ======================================== */

/* Extra Small Devices (320px - 374px) - iPhone SE, older phones */
@media (max-width: 374px) {
  .registration-section {
    padding: 10px 0;
    min-height: 100vh;
  }

  .registration-card {
    padding: 15px;
    margin: 5px auto;
    border-radius: 12px;
    max-width: 100%;
  }

  .registration-logo {
    max-height: 50px !important;
    width: auto;
  }

  .registration-header {
    margin-bottom: 15px !important;
  }

  .registration-header h2 {
    font-size: 20px !important;
    margin-bottom: 8px;
    line-height: 1.3;
  }

  .registration-header p {
    font-size: 13px;
    margin-bottom: 10px;
    line-height: 1.5;
  }

  .value-proposition {
    flex-direction: column;
    gap: 8px;
    padding: 10px 0;
    margin-bottom: 15px;
  }

  .benefit-item {
    flex-direction: row;
    justify-content: flex-start;
    text-align: left;
    gap: 8px;
    padding: 5px 0;
  }

  .benefit-item i {
    font-size: 16px;
    min-width: 16px;
  }

  .benefit-item span {
    font-size: 11px;
    line-height: 1.3;
  }

  .form-group {
    margin-bottom: 15px;
  }

  .form-label {
    font-size: 11px;
    margin-bottom: 6px;
    gap: 6px;
  }

  .form-label i {
    width: 16px;
    height: 16px;
    font-size: 10px;
  }

  .form-control {
    padding: 12px 15px;
    font-size: 14px;
    min-height: 44px;
    border-radius: 8px;
  }

  .btn-register,
  .btn-get-code,
  .btn-verify {
    padding: 12px 20px;
    font-size: 14px;
    min-height: 44px;
    border-radius: 25px;
  }

  .terms-container {
    padding: 12px;
    gap: 10px;
  }

  .form-check-label {
    font-size: 12px;
    line-height: 1.5;
  }

  .checkbox-design {
    width: 18px;
    height: 18px;
  }

  .form-check-input {
    width: 18px;
    height: 18px;
  }

  .referral-notice .alert {
    padding: 12px;
    font-size: 12px;
    line-height: 1.4;
  }

  .referral-notice .alert i {
    font-size: 16px;
    margin-right: 8px;
  }

  .referral-notice .alert strong {
    font-size: 14px;
  }

  .referral-code-display {
    font-size: 11px;
    padding: 4px 8px;
  }

  .mobile-header {
    top: 10px;
    right: 10px;
  }

  .mobile-header .language-selector select {
    padding: 8px 12px;
    font-size: 12px;
    min-height: 40px;
    min-width: 100px;
  }

  .password-input-container .form-control {
    padding-right: 55px;
  }

  .password-show-toggle {
    right: 12px;
    font-size: 12px;
    min-width: 40px;
    padding: 4px 8px;
  }

  .verification-code-input {
    font-size: 20px !important;
    letter-spacing: 6px !important;
    padding: 12px !important;
  }

  .login-link p,
  .resend-section p {
    font-size: 12px;
  }

  .login-link a {
    font-size: 12px;
    display: inline-block;
    padding: 8px 4px;
    min-height: 44px;
    line-height: 28px;
  }
}

/* Small phones (375px - 480px) - iPhone 12/13/14, Samsung Galaxy */
@media (min-width: 375px) and (max-width: 480px) {
  .registration-section {
    padding: 15px 0;
  }

  .registration-card {
    padding: 20px;
    margin: 8px auto;
    border-radius: 14px;
  }

  .registration-logo {
    max-height: 60px !important;
  }

  .registration-header {
    margin-bottom: 20px !important;
  }

  .registration-header h2 {
    font-size: 22px;
    margin-bottom: 10px;
  }

  .registration-header p {
    font-size: 14px;
  }

  .value-proposition {
    flex-direction: column;
    gap: 10px;
    padding: 12px 0;
    margin-bottom: 20px;
  }

  .benefit-item {
    flex-direction: row;
    justify-content: flex-start;
    text-align: left;
    gap: 10px;
  }

  .benefit-item i {
    font-size: 18px;
  }

  .benefit-item span {
    font-size: 12px;
  }

  .form-group {
    margin-bottom: 18px;
  }

  .form-control {
    padding: 14px 16px;
    font-size: 15px;
    min-height: 48px;
  }

  .btn-register,
  .btn-get-code,
  .btn-verify {
    padding: 14px 25px;
    font-size: 15px;
    min-height: 48px;
  }

  .password-input-container .form-control {
    padding-right: 60px;
  }

  .password-show-toggle {
    right: 15px;
    font-size: 13px;
  }

  .verification-code-input {
    font-size: 22px !important;
    letter-spacing: 7px !important;
  }
}

/* Medium phones (481px - 575px) */
@media (min-width: 481px) and (max-width: 575px) {
  .registration-card {
    padding: 25px;
    margin: 10px auto;
  }

  .registration-logo {
    max-height: 65px !important;
  }

  .registration-header h2 {
    font-size: 24px;
  }

  .value-proposition {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }

  .benefit-item {
    flex-direction: column;
    text-align: center;
    min-width: 30%;
  }

  .benefit-item span {
    font-size: 12px;
  }
}

/* Large phones (576px - 767px) */
@media (min-width: 576px) and (max-width: 767px) {
  .registration-section {
    padding: 30px 0;
  }

  .registration-card {
    padding: 35px 30px;
    max-width: 500px;
  }

  .registration-logo {
    max-height: 70px !important;
  }

  .registration-header h2 {
    font-size: 28px;
  }

  .registration-header p {
    font-size: 15px;
  }

  .value-proposition {
    flex-direction: row;
    justify-content: space-around;
  }

  .benefit-item {
    flex-direction: column;
    text-align: center;
  }

  .benefit-item i {
    font-size: 20px;
  }

  .benefit-item span {
    font-size: 13px;
  }

  .form-control {
    padding: 15px 18px;
  }
}

/* Tablets (768px - 991px) */
@media (min-width: 768px) and (max-width: 991px) {
  .registration-section {
    padding: 60px 0;
  }

  .registration-card {
    padding: 45px 35px;
    max-width: 520px;
  }

  .registration-logo {
    max-height: 75px !important;
  }

  .registration-header h2 {
    font-size: 32px;
  }

  .registration-header p {
    font-size: 16px;
  }

  .benefit-item span {
    font-size: 13px;
  }

  .form-control {
    padding: 16px 20px;
    min-height: 52px;
  }

  .btn-register,
  .btn-get-code,
  .btn-verify {
    padding: 16px 35px;
  }
}

/* Desktop (992px - 1199px) */
@media (min-width: 992px) and (max-width: 1199px) {
  .registration-section {
    padding: 80px 0;
  }

  .registration-card {
    padding: 55px 45px;
    max-width: 540px;
  }

  .registration-logo {
    max-height: 80px !important;
  }

  .registration-header h2 {
    font-size: 35px;
  }

  .value-proposition {
    margin-bottom: 30px;
  }
}

/* Large desktop (1200px+) */
@media (min-width: 1200px) {
  .registration-section {
    padding: 100px 0;
  }

  .registration-card {
    padding: 60px 50px;
    max-width: 540px;
  }

  .registration-logo {
    max-height: 85px !important;
  }

  .floating-particle {
    display: block !important;
  }
}

/* Landscape Mode Optimization for Mobile */
@media (max-height: 500px) and (orientation: landscape) {
  .registration-section {
    padding: 20px 0;
    min-height: auto;
  }

  .registration-card {
    padding: 20px;
    margin: 10px auto;
  }

  .registration-header {
    margin-bottom: 15px !important;
  }

  .registration-logo {
    max-height: 40px !important;
  }

  .registration-header h2 {
    font-size: 18px !important;
    margin-bottom: 5px;
  }

  .registration-header p {
    font-size: 12px;
    margin-bottom: 8px;
  }

  .value-proposition {
    margin-bottom: 12px;
    padding: 8px 0;
  }

  .form-group {
    margin-bottom: 12px;
  }

  .form-control {
    min-height: 40px;
    padding: 10px 12px;
  }

  .btn-register,
  .btn-get-code,
  .btn-verify {
    min-height: 40px;
    padding: 10px 20px;
  }
}

/* High DPI Displays - Retina optimization */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .registration-logo {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .floating-particle {
    animation: none !important;
  }
}