@import url('https://fonts.googleapis.com/css2?family=Comfortaa:wght@300&display=swap');

:root {
  --main-orange: #f7931a;
  --main-black: #0f0f0f;
  --main-gray: #1e1e1e;
  --main-white: #fff;
  
  /* Light mode variables */
  --bg-primary: #1e1e1e;
  --bg-secondary: #0f0f0f;
  --bg-tertiary: #2a2a2a;
  --text-primary: #fff;
  --text-secondary: #bbb;
  --border-color: #222;
  --input-bg: #2a2a2a;
  --card-bg: #181818;
}

/* Light mode styles */
[data-theme="light"] {
  --bg-primary: #f8f9fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #e9ecef;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --border-color: #dee2e6;
  --input-bg: #ffffff;
  --card-bg: #ffffff;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-primary);
  height: 100%;
  transition: all 0.3s ease;
}

body {
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  color: var(--text-primary);
  transition: all 0.3s ease;
}

.app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* ===== Sidebar ===== */
.sidebar, .sidebar-header, .chat-list, .sidebar-footer, .chat-input {
  box-sizing: border-box;
}

.sidebar {
  width: 28%;
  background-color: var(--bg-primary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 64px;
  min-height: 64px;
  padding: 0 1rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  box-sizing: border-box;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.sidebar-title {
  font-size: 2rem;
  font-weight: bold;
  color: var(--main-orange);
  letter-spacing: 2px;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  text-shadow: 0 2px 4px rgba(247, 147, 26, 0.3);
  animation: titleGlow 2s ease-in-out infinite alternate;
}

@keyframes titleGlow {
  from {
    text-shadow: 0 2px 4px rgba(247, 147, 26, 0.3);
  }
  to {
    text-shadow: 0 2px 8px rgba(247, 147, 26, 0.6);
  }
}

.chat-header {
  display: flex;
  align-items: center;
  height: 64px;
  min-height: 64px;
  padding: 0 1rem;
  position: relative;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  box-sizing: border-box;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

/* ===== Chat List ===== */
.chat-list {
  overflow-y: auto;
  flex: 1 1 auto;
  min-height: 0;
  background: transparent;
}

.empty-contacts {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 200px;
  color: var(--text-secondary);
  text-align: center;
  padding: 2rem;
}

.empty-contacts p {
  margin: 0.3rem 0;
  font-size: 0.9rem;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  color: var(--text-secondary);
}

.empty-contacts p:first-child {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 600;
}

.decrypt-btn {
  background: linear-gradient(135deg, var(--main-orange) 0%, #e67e22 100%);
  color: var(--main-white);
  border: none;
  border-radius: 25px;
  padding: 1rem 2rem;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  margin-top: 1.5rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(247, 147, 26, 0.3);
  position: relative;
  overflow: hidden;
}

.decrypt-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.decrypt-btn:hover::before {
  left: 100%;
}

.decrypt-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(247, 147, 26, 0.4);
}

.decrypt-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(247, 147, 26, 0.3);
}

.decrypt-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.chat-item {
  display: flex;
  padding: 1rem;
  cursor: pointer;
  border-bottom: 1px solid var(--border-color);
  align-items: center;
  transition: all 0.3s ease;
  background: var(--bg-primary);
  position: relative;
  overflow: hidden;
  animation: contactSlideIn 0.5s ease-out;
}

/* Light mode chat item adjustments */
[data-theme="light"] .chat-item {
  border-bottom: 1px solid #e9ecef;
}

/* Light mode input border adjustments */
[data-theme="light"] .add-contact-input,
[data-theme="light"] .private-key-input,
[data-theme="light"] .public-key-value {
  border-color: #dee2e6;
}

.chat-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: var(--main-orange);
  transform: scaleY(0);
  transition: transform 0.3s ease;
}

.chat-item:hover {
  background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-primary) 100%);
  transform: translateX(4px);
}

/* Light mode hover adjustments */
[data-theme="light"] .chat-item:hover {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.chat-item:hover::before {
  transform: scaleY(1);
}

.chat-item.active {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-left: 4px solid var(--main-orange);
}

/* Light mode active adjustments */
[data-theme="light"] .chat-item.active {
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
  border-left: 4px solid var(--main-orange);
}

.chat-item.active::before {
  transform: scaleY(1);
}

.chat-item .avatar {
  border-radius: 50%;
  width: 40px;
  height: 40px;
  margin-right: 0.8rem;
}

.chat-details h4 {
  margin: 0;
  font-size: 1rem;
  color: var(--text-primary);
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
}

.chat-details p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
}

.contact-address-text {
  margin: 0.3rem 0 0 0 !important;
  font-size: 0.8rem !important;
  color: var(--text-secondary) !important;
  font-family: 'Comfortaa', 'Segoe UI', monospace !important;
  opacity: 0.8;
}

/* ===== Chat Area ===== */
.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  transition: all 0.3s ease;
  min-width: 0;
}

.chat-header .avatar {
  border-radius: 50%;
  width: 40px;
  height: 40px;
  margin-right: 1rem;
}

.avatar-placeholder {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--main-orange) 0%, #e67e22 100%);
  color: var(--main-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.2rem;
  margin-right: 1rem;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  box-shadow: 0 4px 12px rgba(247, 147, 26, 0.3);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

/* Light mode avatar adjustments */
[data-theme="light"] .avatar-placeholder {
  box-shadow: 0 4px 12px rgba(247, 147, 26, 0.4);
}

.avatar-placeholder::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transform: rotate(45deg);
  transition: all 0.6s ease;
}

.avatar-placeholder:hover::before {
  transform: rotate(45deg) translate(50%, 50%);
}

.avatar-placeholder:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(247, 147, 26, 0.4);
}

.contact-info {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin-right: 60px;
}

.chat-header h3 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--text-primary);
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  font-weight: 600;
}

.contact-address {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: 'Comfortaa', 'Segoe UI', monospace;
  margin-top: 0.2rem;
  word-break: break-all;
  max-width: 200px;
}

.contact-address-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.2rem;
}

.copy-contact-address-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  width: 14px;
  height: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
  opacity: 0.7;
}

.copy-contact-address-btn:hover {
  color: var(--main-orange);
  opacity: 1;
  transform: scale(1.1);
}

.copy-contact-address-btn svg {
  width: 10px;
  height: 10px;
}

/* ===== Chat Messages ===== */
.chat-messages {
  flex: 1;
  padding: 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  position: relative;
  width: 100%;
  box-sizing: border-box;
}

.message {
  padding: 1rem 1.5rem;
  border-radius: 20px;
  max-width: 80%;
  font-size: 0.95rem;
  line-height: 1.5;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  position: relative;
  margin-bottom: 0.8rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
  animation: messageSlideIn 0.4s ease-out;
  transition: all 0.3s ease;
  word-wrap: break-word;
  min-height: fit-content;
  overflow-wrap: break-word;
  word-break: break-word;
}



/* Light mode message adjustments */
[data-theme="light"] .message {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.message.received {
  background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
  color: var(--text-primary);
  align-self: flex-start;
  border-bottom-left-radius: 8px;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
}

.message.received::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.02) 100%);
  pointer-events: none;
  z-index: 1;
}

/* Light mode received message adjustments */
[data-theme="light"] .message.received {
  background: linear-gradient(135deg, #e9ecef 0%, #dee2e6 100%);
  color: var(--text-primary);
  border: 1px solid #d1d5db;
}

.message.sent {
  background: linear-gradient(135deg, var(--main-orange) 0%, #e67e22 100%);
  color: var(--main-white);
  align-self: flex-end;
  border-bottom-right-radius: 8px;
  border: 1px solid rgba(247, 147, 26, 0.3);
  box-shadow: 0 4px 16px rgba(247, 147, 26, 0.25);
  position: relative;
  overflow: hidden;
}

.message.sent::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  pointer-events: none;
  z-index: 1;
}

@keyframes messageSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes contactSlideIn {
  from {
    opacity: 0;
    transform: translateX(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}

@keyframes buttonPulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    transform: scale(1);
  }
}

.message-time {
  font-size: 0.75rem;
  opacity: 0.7;
  margin-top: 0.3rem;
  display: block;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
}

.message.sent .message-time {
  color: rgba(255, 255, 255, 0.9);
  text-align: right;
}

.message.received .message-time {
  color: var(--text-secondary);
  text-align: left;
}

/* Message hover effects */
.message:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] .message:hover {
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.message.sent:hover {
  box-shadow: 0 8px 25px rgba(247, 147, 26, 0.4);
  transform: translateY(-2px) scale(1.02);
}

.message.received:hover {
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px) scale(1.02);
}

[data-theme="light"] .message.received:hover {
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.25);
}

/* ===== Input ===== */
.chat-input {
  display: flex;
  padding: 1rem;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  height: 72px;
  box-sizing: border-box;
  transition: all 0.3s ease;
}

.chat-input input {
  flex: 1;
  padding: 0.8rem 1.2rem;
  border: 2px solid transparent;
  border-radius: 25px;
  outline: none;
  background: var(--input-bg);
  color: var(--text-primary);
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  font-size: 1rem;
  transition: all 0.3s ease;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.chat-input input:focus {
  border-color: var(--main-orange);
  box-shadow: 0 0 0 3px rgba(247, 147, 26, 0.1), inset 0 2px 4px rgba(0, 0, 0, 0.2);
  transform: translateY(-1px);
}

.chat-input input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.chat-input input::placeholder {
  color: var(--text-secondary);
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  font-weight: 300;
  transition: color 0.3s ease;
}

.chat-input input:focus::placeholder {
  color: var(--text-primary);
}

.chat-input button {
  margin-left: 0.8rem;
  background: linear-gradient(135deg, var(--main-orange) 0%, #e67e22 100%);
  color: var(--main-white);
  padding: 0.8rem 1.5rem;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(247, 147, 26, 0.3);
  position: relative;
  overflow: hidden;
}

.chat-input button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.chat-input button:hover::before {
  left: 100%;
}

.chat-input button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(247, 147, 26, 0.4);
}

.chat-input button:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(247, 147, 26, 0.3);
}

.chat-input button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: 0 2px 8px rgba(247, 147, 26, 0.2);
}

.refresh-btn {
  background: var(--main-orange);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-left: auto;
  margin-right: 16px;
}

.refresh-btn svg {
  width: 18px;
  height: 18px;
  color: white;
}

.refresh-btn:hover {
  background: #e67e22;
  transform: scale(1.05);
  animation: buttonPulse 0.3s ease-in-out;
}

.refresh-btn:active {
  transform: scale(0.95);
}

.refresh-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background: var(--bg-tertiary);
}

.sidebar-footer {
  height: 72px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
  box-sizing: border-box;
  transition: all 0.3s ease;
}

.sidebar-actions {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 12px;
  height: 100%;
}

.action-btn {
  background: none;
  border: none;
  outline: none;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
  position: relative;
  overflow: hidden;
}

.action-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
  transition: left 0.5s;
}

.action-btn:hover::before {
  left: 100%;
}

.action-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: scale(1.1);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  animation: buttonPulse 0.3s ease-in-out;
}

/* Sidebar icon styles */
.sidebar-icon {
  width: 32px;
  height: 32px;
  display: block;
}
.sidebar-icon-circle {
  cx: 16;
  cy: 16;
  r: 11;
}

/* Wallet connect icon color states */
#wallet-connect-icon.wallet-success {
  stroke: #27ae60;
}
#wallet-connect-icon.wallet-error {
  stroke: #e74c3c;
}

/* Wallet connect alert styles */
.wallet-alert {
  position: fixed;
  top: 32px;
  right: 32px;
  left: auto;
  bottom: auto;
  transform: none;
  min-width: 280px;
  max-width: 90vw;
  padding: 1.2rem 2.5rem;
  border-radius: 16px;
  color: #fff;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  font-size: 1rem;
  font-weight: 500;
  z-index: 9999;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  opacity: 0;
  text-align: center;
  animation: alertSlideIn 0.4s ease-out forwards, fadeOut 2s 2s forwards;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

@keyframes alertSlideIn {
  from {
    opacity: 0;
    transform: translateX(100px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateX(0) scale(1);
  }
}
.wallet-alert.success {
  background: #27ae60;
}
.wallet-alert.error {
  background: #e74c3c;
}
.wallet-alert.info {
  background: #3498db;
}
@keyframes fadeOut {
  to { opacity: 0; }
}

.custom-tooltip {
  position: fixed;
  background: #222;
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  font-size: 0.95rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.18);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s;
  z-index: 10000;
  white-space: nowrap;
}
.custom-tooltip.show {
  opacity: 1;
  pointer-events: auto;
}
.custom-tooltip::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: -8px;
  width: 0;
  height: 0;
  border-left: 8px solid transparent;
  border-right: 8px solid transparent;
  border-top: 8px solid #222;
}

#public-key-modal {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.45);
  z-index: 10001;
  display: flex;
  align-items: center;
  justify-content: center;
}
.public-key-box {
  background: var(--card-bg);
  border-radius: 18px;
  box-shadow: 0 4px 32px rgba(0,0,0,0.2);
  padding: 2.2rem 2.5rem 1.5rem 2.5rem;
  min-width: 320px;
  max-width: 600px;
  width: 90vw;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}
.public-key-title {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 1.2rem;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
}
.public-key-value {
  background: var(--input-bg);
  color: var(--text-primary);
  font-family: 'Comfortaa', 'Segoe UI', monospace;
  font-size: 1.05rem;
  border-radius: 10px;
  padding: 0.7rem 2.5rem 0.7rem 1.2rem;
  margin-bottom: 1.2rem;
  user-select: all;
  width: 100%;
  box-sizing: border-box;
  text-align: center;
  white-space: nowrap;
  overflow-x: auto;
  border: 2px solid var(--border-color);
}
.copy-btn {
  background: #27ae60;
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.5rem 1.2rem;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  font-size: 1rem;
  cursor: pointer;
  margin-right: 0.5rem;
  transition: background 0.2s;
  margin-top: 1.2rem;
}
.copy-btn:hover {
  background: #219150;
}
.close-btn {
  position: absolute;
  top: 12px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color 0.3s ease;
}
.close-btn:hover {
  color: var(--text-primary);
}

/* Unify private key and public key modal styles */
.private-key-box, .public-key-box {
  background: var(--card-bg);
  border-radius: 18px;
  box-shadow: 0 4px 32px rgba(0,0,0,0.2);
  padding: 2.2rem 2.5rem 1.5rem 2.5rem;
  min-width: 320px;
  max-width: 600px;
  width: 90vw;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}
.private-key-title, .public-key-title {
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 1.2rem;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
}
.private-key-box-input-row, .public-key-value-row {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin-bottom: 1.2rem;
  width: 100%;
  max-width: 420px;
  margin-left: auto;
  margin-right: auto;
}
.private-key-input, .public-key-value {
  background: var(--input-bg);
  color: var(--text-primary);
  font-family: 'Comfortaa', 'Segoe UI', monospace;
  font-size: 1.05rem;
  border-radius: 10px;
  padding: 0.7rem 2.5rem 0.7rem 1.2rem;
  border: 2px solid var(--border-color);
  outline: none;
  width: 100%;
  letter-spacing: 0.1em;
  box-sizing: border-box;
  margin-bottom: 0;
}
.toggle-visibility-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: color 0.3s ease;
  z-index: 2;
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
}
.toggle-visibility-btn svg {
  width: 22px;
  height: 22px;
  display: block;
}
.toggle-visibility-btn:hover {
  color: var(--text-primary);
}
.save-btn {
  background: linear-gradient(135deg, #27ae60 0%, #219150 100%);
  color: var(--main-white);
  border: none;
  border-radius: 8px;
  padding: 0.5rem 1.2rem;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  font-size: 1rem;
  cursor: pointer;
  margin-right: 0.5rem;
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(39, 174, 96, 0.3);
}
.save-btn:hover {
  background: linear-gradient(135deg, #219150 0%, #1e8449 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(39, 174, 96, 0.4);
}

/* Force private key modal to match public key modal exactly */
.private-key-box {
  min-width: 320px !important;
  max-width: 600px !important;
  width: 90vw !important;
  padding: 2.2rem 2.5rem 1.5rem 2.5rem !important;
  border-radius: 18px !important;
  box-shadow: 0 4px 32px rgba(0,0,0,0.2) !important;
  background: var(--card-bg) !important;
  text-align: center !important;
  position: relative !important;
  transition: all 0.3s ease !important;
}

/* Chat overlay styles */
.chat-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: all 0.3s ease;
}

[data-theme="light"] .chat-overlay {
  background: rgba(255, 255, 255, 0.5);
}

.chat-overlay-message {
  color: var(--text-primary);
  font-size: 1.2rem;
  text-align: center;
  font-family: 'Comfortaa', 'Segoe UI', sans-serif;
  padding: 2.5rem 3rem;
  background: var(--card-bg);
  border-radius: 20px;
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  animation: overlayFadeIn 0.5s ease-out;
  transition: all 0.3s ease;
}

@keyframes overlayFadeIn {
  from {
    opacity: 0;
    transform: scale(0.9) translateY(20px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}
.private-key-box-input-row {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  margin-bottom: 1.2rem;
  width: 100%;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}
.private-key-input {
  background: var(--input-bg);
  color: var(--text-primary);
  font-family: 'Comfortaa', 'Segoe UI', monospace;
  font-size: 1.05rem;
  border-radius: 10px;
  padding: 0.7rem 2.5rem 0.7rem 1.2rem;
  border: 2px solid var(--border-color);
  outline: none;
  width: 100%;
  letter-spacing: 0.1em;
  box-sizing: border-box;
  margin-bottom: 0;
}

/* --- Add Contact Modal Styles --- */
.add-contact-box {
  background: var(--card-bg);
  color: var(--text-primary);
  border-radius: 1.2rem;
  box-shadow: 0 8px 32px 0 rgba(0,0,0,0.2);
  padding: 2.2rem 2.5rem 2.5rem 2.5rem;
  max-width: 410px;
  width: 92vw;
  position: relative;
  margin: 8vh auto 0 auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  transition: all 0.3s ease;
}
.add-contact-title {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-align: center;
  color: var(--text-primary);
}
.add-contact-input-row {
  margin-bottom: 1.1rem;
  width: 100%;
}
.add-contact-input {
  width: 100%;
  padding: 0.9rem 1.1rem;
  border-radius: 0.7rem;
  border: 2px solid var(--border-color);
  background: var(--input-bg);
  color: var(--text-primary);
  font-size: 1.08rem;
  outline: none;
  box-sizing: border-box;
  transition: all 0.3s ease;
}
.add-contact-input:focus {
  background: var(--input-bg);
  border: 2px solid var(--main-orange);
  box-shadow: 0 0 0 3px rgba(247, 147, 26, 0.1);
}

.private-key-input:focus, .public-key-value:focus {
  border: 2px solid var(--main-orange);
  box-shadow: 0 0 0 3px rgba(247, 147, 26, 0.1);
}
.add-contact-btn {
  margin-top: 0.7rem;
  padding: 0.9rem 0;
  border-radius: 0.7rem;
  border: none;
  background: linear-gradient(135deg, var(--main-orange) 0%, #e67e22 100%);
  color: var(--main-white);
  font-size: 1.08rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(247, 147, 26, 0.3);
}
.add-contact-btn:hover {
  background: linear-gradient(135deg, #e67e22 0%, #d35400 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(247, 147, 26, 0.4);
}
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.45);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

[data-theme="light"] .modal-overlay {
  background: rgba(0,0,0,0.3);
}
.add-contact-box .close-btn {
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 2.1rem;
  cursor: pointer;
  position: absolute;
  top: 1.2rem;
  right: 1.2rem;
  line-height: 1;
  padding: 0;
  transition: color 0.3s ease;
}
.add-contact-box .close-btn:hover {
  color: #f87171;
}

/* Settings Modal Styles */
.settings-box {
  background: var(--card-bg);
  color: var(--text-primary);
  border-radius: 1.2rem;
  box-shadow: 0 8px 32px 0 rgba(0,0,0,0.37);
  padding: 2.2rem 2.5rem 2.5rem 2.5rem;
  max-width: 400px;
  width: 92vw;
  position: relative;
  margin: 8vh auto 0 auto;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  transition: all 0.3s ease;
}

.settings-title {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-align: center;
  color: var(--text-primary);
}

.settings-option {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.settings-option:last-child {
  border-bottom: none;
}

.settings-option-label {
  font-size: 1.1rem;
  color: var(--text-primary);
  font-weight: 500;
}

/* Theme Toggle Switch */
.theme-toggle {
  position: relative;
  width: 60px;
  height: 30px;
  background: var(--bg-tertiary);
  border-radius: 15px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 2px solid var(--border-color);
}

.theme-toggle.active {
  background: var(--main-orange);
  border-color: var(--main-orange);
}

.theme-toggle::before {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 22px;
  height: 22px;
  background: var(--text-primary);
  border-radius: 50%;
  transition: all 0.3s ease;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.theme-toggle.active::before {
  transform: translateX(30px);
}

.theme-toggle:hover {
  transform: scale(1.05);
}

/* ===== Current User Box ===== */
.current-user-box {
  display: flex;
  padding: 1.2rem;
  align-items: center;
  transition: all 0.3s ease;
  background: linear-gradient(135deg, rgba(39, 174, 96, 0.15) 0%, rgba(46, 204, 113, 0.08) 100%);
  position: relative;
  overflow: hidden;
  animation: currentUserSlideIn 0.5s ease-out;
  margin-bottom: 0.2rem;
  border: 1px solid rgba(39, 174, 96, 0.2);
  box-shadow: 0 4px 16px rgba(39, 174, 96, 0.15);
}

.current-user-box:hover {
  background: linear-gradient(135deg, rgba(39, 174, 96, 0.2) 0%, rgba(46, 204, 113, 0.12) 100%);
  box-shadow: 0 4px 16px rgba(39, 174, 96, 0.25);
}

.current-user-avatar {
  background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%) !important;
  box-shadow: 0 4px 12px rgba(39, 174, 96, 0.4) !important;
  border: 2px solid rgba(255, 255, 255, 0.1);
}

.current-user-avatar:hover {
  box-shadow: 0 6px 20px rgba(39, 174, 96, 0.5) !important;
  transform: scale(1.05);
}

.wallet-address-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.2rem;
}

.wallet-address {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: 'Comfortaa', 'Segoe UI', monospace;
  word-break: break-all;
  max-width: 200px;
}

.copy-address-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.3s ease;
  padding: 0;
  opacity: 0.7;
}

.copy-address-btn:hover {
  color: var(--main-orange);
  opacity: 1;
  transform: scale(1.1);
}

.copy-address-btn svg {
  width: 12px;
  height: 12px;
}

@keyframes currentUserSlideIn {
  from {
    opacity: 0;
    transform: translateY(-20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Light mode adjustments for current user box */
[data-theme="light"] .current-user-box {
  background: linear-gradient(135deg, rgba(39, 174, 96, 0.12) 0%, rgba(46, 204, 113, 0.06) 100%);
  border: 1px solid rgba(39, 174, 96, 0.25);
  box-shadow: 0 4px 16px rgba(39, 174, 96, 0.2);
}

[data-theme="light"] .current-user-box:hover {
  background: linear-gradient(135deg, rgba(39, 174, 96, 0.18) 0%, rgba(46, 204, 113, 0.1) 100%);
  box-shadow: 0 6px 20px rgba(39, 174, 96, 0.3);
}

[data-theme="light"] .current-user-avatar {
  box-shadow: 0 4px 12px rgba(39, 174, 96, 0.5) !important;
  border: 2px solid rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .current-user-avatar:hover {
  box-shadow: 0 6px 20px rgba(39, 174, 96, 0.6) !important;
}