/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

:root {
  --bg-color: #171313;
  --card-bg: #171313;
  --text-primary: #ffffff;
  --text-secondary: #a39b98;
  --text-muted: #7d7573;
  --btn-create-bg: #ffffff;
  --btn-create-text: #000000;
  --btn-create-hover: #ebebeb;
  --btn-import-bg: #8c2cf6;
  --btn-import-hover: #7b22df;
  --btn-import-text: #ffffff;
  --close-btn-bg: rgba(255, 255, 255, 0.12);
  --close-btn-hover: rgba(255, 255, 255, 0.2);
  --close-icon-color: #d1c8c5;
  --input-bg: #171313;
  --input-border: #453c3a;
  --radius-btn: 12px;
  --radius-card: 18px;
  --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

html {
  height: 100%;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-family);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow-x: hidden;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* App Viewport Container - Mobile First */
.app-container {
  width: 100%;
  max-width: 440px;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  position: relative;
  padding: calc(16px + env(safe-area-inset-top, 0px)) 20px calc(32px + env(safe-area-inset-bottom, 0px));
  background-color: var(--card-bg);
}

/* Desktop & Tablet Viewport */
@media (min-width: 540px) {
  body {
    background-color: #0d0a0a;
    background-image: 
      radial-gradient(circle at 50% 20%, rgba(140, 44, 246, 0.08) 0%, transparent 60%),
      radial-gradient(circle at 50% 80%, rgba(255, 255, 255, 0.02) 0%, transparent 50%);
    padding: 32px 16px;
  }
  
  .app-container {
    min-height: auto;
    background-color: var(--card-bg);
    border-radius: var(--radius-card);
    box-shadow: 
      0 24px 60px rgba(0, 0, 0, 0.75),
      0 0 0 1px rgba(255, 255, 255, 0.07);
    padding: 28px 24px 36px;
    margin: auto;
  }
}

/* Extra Small Screens Adaptation */
@media (max-width: 360px) {
  .app-container {
    padding: calc(12px + env(safe-area-inset-top, 0px)) 14px calc(24px + env(safe-area-inset-bottom, 0px));
  }
  
  .wallet-title {
    font-size: 21px !important;
  }
  
  .wallet-description {
    font-size: 13.5px !important;
  }
  
  .action-row {
    gap: 10px !important;
  }
  
  .btn-back-outline,
  .btn-import-submit {
    font-size: 14px !important;
    height: 48px !important;
  }
}

/* Header Area with Close Button */
.header-area {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  width: 100%;
  margin-bottom: 20px;
  min-height: 44px;
}

.close-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background-color: var(--close-btn-bg);
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--close-icon-color);
  transition: background-color 0.2s ease, transform 0.15s ease;
  outline: none;
}

.close-btn:hover {
  background-color: var(--close-btn-hover);
}

.close-btn:active {
  transform: scale(0.92);
}

.close-btn:focus-visible {
  box-shadow: 0 0 0 2px rgba(140, 44, 246, 0.6);
}

.close-icon {
  width: 16px;
  height: 16px;
  stroke: currentColor;
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Main Content Section */
.wallet-content {
  display: flex;
  flex-direction: column;
  width: 100%;
  animation: fadeIn 0.3s ease-out;
}

.wallet-title {
  color: var(--text-primary);
  font-size: 24px;
  font-weight: 700;
  text-align: center;
  letter-spacing: -0.3px;
  margin-bottom: 32px;
  line-height: 1.25;
}

.wallet-description {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.55;
  text-align: left;
  margin-bottom: 40px;
  letter-spacing: -0.1px;
}

/* Button Group */
.button-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
}

.btn {
  width: 100%;
  height: 52px;
  border-radius: var(--radius-btn);
  border: none;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease, transform 0.15s ease, opacity 0.2s ease;
  letter-spacing: -0.1px;
  text-decoration: none;
  user-select: none;
}

.btn:active {
  transform: scale(0.985);
}

.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.4);
}

.btn-import {
  background-color: var(--btn-import-bg);
  color: var(--btn-import-text);
}

.btn-import:hover {
  background-color: var(--btn-import-hover);
}

/* Sub-view: Import Screen */
.sub-view {
  display: none;
  flex-direction: column;
  width: 100%;
  animation: fadeIn 0.25s ease-out;
}

.sub-view.active {
  display: flex;
}

/* Input Label */
.input-label {
  display: block;
  font-size: 14.5px;
  color: #cfc7c5;
  margin-bottom: 12px;
  text-align: left;
  font-weight: 400;
  letter-spacing: -0.1px;
}

/* Custom Textarea with multi-line placeholder */
.input-field-custom {
  width: 100%;
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 12px;
  padding: 16px;
  color: #ffffff;
  font-family: inherit;
  font-size: 14.5px;
  line-height: 1.5;
  resize: none;
  min-height: 145px;
  margin-bottom: 4px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  white-space: pre-wrap;
  word-break: break-all;
}

.input-field-custom:focus {
  border-color: #8c2cf6;
  box-shadow: 0 0 0 1px rgba(140, 44, 246, 0.4);
}

.input-field-custom::placeholder {
  color: #6e6462;
  font-size: 14.5px;
  line-height: 1.5;
}

/* Action row for side-by-side buttons */
.action-row {
  display: flex;
  gap: 14px;
  width: 100%;
  margin-top: 24px;
}

.btn-back-outline {
  flex: 1;
  height: 52px;
  background: transparent;
  border: 1px solid #4a4240;
  color: #ffffff;
  border-radius: 10px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
  user-select: none;
}

.btn-back-outline:hover {
  background-color: rgba(255, 255, 255, 0.06);
  border-color: #635957;
}

.btn-back-outline:active {
  transform: scale(0.985);
}

.btn-back-outline:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.3);
}

.btn-import-submit {
  flex: 1;
  height: 52px;
  background-color: #8c8684;
  color: #171313;
  border: none;
  border-radius: 10px;
  font-family: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.2s ease, transform 0.15s ease;
  user-select: none;
}

.btn-import-submit:hover {
  background-color: #9c9593;
}

.btn-import-submit:active {
  transform: scale(0.985);
}

.btn-import-submit:focus-visible {
  outline: none;
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
}

.btn-import-submit.filled {
  background-color: #ffffff;
  color: #000000;
}

.btn-import-submit.filled:hover {
  background-color: #f0f0f0;
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background-color: #2b2525;
  color: #ffffff;
  padding: 12px 20px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  gap: 8px;
  opacity: 0;
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.3s ease;
  pointer-events: none;
  z-index: 1000;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* Animation */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}