/* Reset and Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Poppins", sans-serif;
  background: linear-gradient(135deg, #5d4e37 0%, #3e2723 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  color: #333;
  padding: 20px;
  transition: all 0.3s ease;
}

/* Dark mode styles */
body.dark-mode {
  background: linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
  color: #e0e0e0;
}

/* Theme Toggle Button */
.theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border: none;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 24px;
  transition: all 0.3s ease;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.theme-toggle:hover {
  transform: scale(1.1);
  background: rgba(255, 255, 255, 0.3);
}

body.dark-mode .theme-toggle {
  background: rgba(0, 0, 0, 0.3);
  color: #e0e0e0;
}

body.dark-mode .theme-toggle:hover {
  background: rgba(0, 0, 0, 0.5);
}

/* Main Container */
.container {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  min-width: 400px;
  max-width: 500px;
  width: 90%;
  text-align: center;
  transition: all 0.3s ease;
}

body.dark-mode .container {
  background: rgba(30, 30, 30, 0.95);
  color: #e0e0e0;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5);
}

/* Header */
h1 {
  color: #4a5568;
  margin-bottom: 30px;
  font-weight: 600;
  font-size: 2rem;
}

body.dark-mode h1 {
  color: #e0e0e0;
}

/* Input Section */
.input-container {
  position: relative;
  margin-bottom: 20px;
}

#passwordInput {
  width: 100%;
  padding: 15px 50px 15px 20px;
  border: 2px solid #e2e8f0;
  border-radius: 12px;
  font-size: 16px;
  font-family: "Poppins", sans-serif;
  transition: all 0.3s ease;
  background: #fff;
  color: #333;
}

body.dark-mode #passwordInput {
  background: #2d2d2d;
  border-color: #404040;
  color: #e0e0e0;
}

#passwordInput:focus {
  outline: none;
  border-color: #8b4513;
  box-shadow: 0 0 0 3px rgba(139, 69, 19, 0.1);
}

body.dark-mode #passwordInput:focus {
  border-color: #bb86fc;
  box-shadow: 0 0 0 3px rgba(187, 134, 252, 0.1);
}

.toggle-password {
  position: absolute;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
  cursor: pointer;
  color: #a0aec0;
  font-size: 18px;
  transition: color 0.3s ease;
  user-select: none;
}

.toggle-password:hover {
  color: #8b4513;
}

body.dark-mode .toggle-password:hover {
  color: #bb86fc;
}

/* Strength Meter */
.strength-meter {
  width: 100%;
  height: 8px;
  background: #e2e8f0;
  border-radius: 4px;
  margin: 15px 0;
  overflow: hidden;
}

body.dark-mode .strength-meter {
  background: #404040;
}

.strength-bar {
  height: 100%;
  width: 0%;
  transition: all 0.5s ease;
  border-radius: 4px;
}

/* Strength Text */
.strength-text {
  font-size: 18px;
  font-weight: 600;
  margin: 15px 0;
  min-height: 25px;
  transition: all 0.3s ease;
}

/* Suggestions Box */
.suggestions {
  background: #f7fafc;
  border-radius: 10px;
  padding: 15px;
  margin-top: 20px;
  text-align: left;
  min-height: 50px;
  border-left: 4px solid #cbd5e0;
  transition: all 0.3s ease;
}

body.dark-mode .suggestions {
  background: #2d2d2d;
  border-left-color: #404040;
}

.suggestions h3 {
  color: #4a5568;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

body.dark-mode .suggestions h3 {
  color: #e0e0e0;
}

.suggestions ul {
  list-style: none;
  padding: 0;
}

.suggestions li {
  color: #666;
  margin: 5px 0;
  font-size: 14px;
  position: relative;
  padding-left: 20px;
  line-height: 1.4;
}

body.dark-mode .suggestions li {
  color: #b0b0b0;
}

.suggestions li:before {
  content: "•";
  color: #cbd5e0;
  font-weight: bold;
  position: absolute;
  left: 0;
}

body.dark-mode .suggestions li:before {
  color: #404040;
}

/* Demo Section */
.demo-section {
  margin-top: 30px;
  padding: 20px;
  background: rgba(255, 255, 255, 0.5);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

body.dark-mode .demo-section {
  background: rgba(0, 0, 0, 0.3);
  border-color: rgba(255, 255, 255, 0.1);
}

.demo-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 15px;
}

.demo-btn {
  background: #8b4513;
  color: white;
  border: none;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 12px;
  font-family: "Poppins", sans-serif;
  transition: all 0.3s ease;
}

.demo-btn:hover {
  background: #a0522d;
  transform: translateY(-1px);
}

body.dark-mode .demo-btn {
  background: #bb86fc;
  color: #000;
}

body.dark-mode .demo-btn:hover {
  background: #d4b3ff;
}

.demo-info {
  font-size: 14px;
  color: #666;
  text-align: center;
  margin-bottom: 10px;
}

body.dark-mode .demo-info {
  color: #b0b0b0;
}

/* Error Messages */
.error {
  color: #e53e3e;
  background: #fed7d7;
  padding: 10px;
  border-radius: 8px;
  margin: 10px 0;
  font-size: 14px;
  border: 1px solid #feb2b2;
}

body.dark-mode .error {
  background: #4a0e0e;
  border-color: #8b0000;
  color: #ffaaaa;
}

/* Strength-Specific Styles */
.very-weak {
  color: #e53e3e;
}

.very-weak .strength-bar {
  background: linear-gradient(90deg, #e53e3e, #fc8181);
  width: 20%;
}

.very-weak .suggestions {
  border-left-color: #e53e3e;
  background: #fed7d7;
}

body.dark-mode .very-weak .suggestions {
  background: #4a0e0e;
}

.weak {
  color: #fd7b28;
}

.weak .strength-bar {
  background: linear-gradient(90deg, #fd7b28, #f6ad55);
  width: 35%;
}

.weak .suggestions {
  border-left-color: #fd7b28;
  background: #feebc8;
}

body.dark-mode .weak .suggestions {
  background: #4a2c0e;
}

.medium {
  color: #f6ad55;
}

.medium .strength-bar {
  background: linear-gradient(90deg, #f6ad55, #fbd38d);
  width: 60%;
}

.medium .suggestions {
  border-left-color: #f6ad55;
  background: #fffbeb;
}

body.dark-mode .medium .suggestions {
  background: #4a3d0e;
}

.strong {
  color: #48bb78;
}

.strong .strength-bar {
  background: linear-gradient(90deg, #48bb78, #68d391);
  width: 80%;
}

.strong .suggestions {
  border-left-color: #48bb78;
  background: #f0fff4;
}

body.dark-mode .strong .suggestions {
  background: #0e4a1a;
}

.very-strong {
  color: #38a169;
}

.very-strong .strength-bar {
  background: linear-gradient(90deg, #38a169, #48bb78);
  width: 100%;
}

.very-strong .suggestions {
  border-left-color: #38a169;
  background: #f0fff4;
}

body.dark-mode .very-strong .suggestions {
  background: #0e4a1a;
}

.loading {
  color: #666;
  font-style: italic;
}

body.dark-mode .loading {
  color: #b0b0b0;
}

/* Enhanced Mobile Responsiveness */
@media (max-width: 768px) {
  body {
    padding: 60px 15px 20px;
    align-items: flex-start;
    justify-content: flex-start;
    padding-top: 70px;
  }

  .theme-toggle {
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 20px;
    z-index: 1000;
  }

  .container {
    min-width: unset;
    width: 100%;
    max-width: none;
    padding: 25px 20px;
    margin: 0;
    border-radius: 15px;
  }

  h1 {
    font-size: 1.6rem;
    margin-bottom: 20px;
  }

  #passwordInput {
    padding: 16px 50px 16px 18px;
    font-size: 16px; /* Prevents zoom on iOS */
    border-radius: 10px;
  }

  .toggle-password {
    right: 18px;
    font-size: 18px;
  }

  .strength-meter {
    height: 8px;
    margin: 15px 0;
  }

  .strength-text {
    font-size: 16px;
    margin: 15px 0;
  }

  .suggestions {
    padding: 15px;
    border-radius: 10px;
    margin-top: 20px;
  }

  .suggestions h3 {
    font-size: 14px;
    margin-bottom: 10px;
  }

  .suggestions li {
    font-size: 14px;
    margin: 6px 0;
    line-height: 1.5;
  }

  .demo-section {
    margin-top: 25px;
    padding: 18px;
    border-radius: 10px;
  }

  .demo-buttons {
    gap: 8px;
  }

  .demo-btn {
    padding: 10px 14px;
    font-size: 13px;
    border-radius: 6px;
    flex: 1;
    min-width: 100px;
  }

  .demo-info {
    font-size: 14px;
    margin-bottom: 15px;
  }
}

@media (max-width: 480px) {
  body {
    padding: 60px 10px 15px;
    padding-top: 70px;
  }

  .theme-toggle {
    top: 15px;
    right: 15px;
    width: 40px;
    height: 40px;
    font-size: 18px;
  }

  .container {
    padding: 20px 15px;
    border-radius: 12px;
    width: 100%;
  }

  h1 {
    font-size: 1.4rem;
    margin-bottom: 18px;
  }

  #passwordInput {
    padding: 14px 45px 14px 16px;
    font-size: 16px;
    border-radius: 8px;
  }

  .toggle-password {
    right: 16px;
    font-size: 16px;
  }

  .strength-meter {
    height: 6px;
    margin: 12px 0;
  }

  .strength-text {
    font-size: 15px;
    margin: 12px 0;
  }

  .suggestions {
    padding: 12px;
    border-radius: 8px;
    margin-top: 15px;
  }

  .suggestions h3 {
    font-size: 12px;
    margin-bottom: 8px;
  }

  .suggestions li {
    font-size: 13px;
    margin: 4px 0;
    line-height: 1.4;
  }

  .demo-section {
    margin-top: 20px;
    padding: 15px;
    border-radius: 8px;
  }

  .demo-buttons {
    flex-direction: column;
    gap: 8px;
  }

  .demo-btn {
    padding: 12px 16px;
    font-size: 13px;
    border-radius: 6px;
    width: 100%;
  }

  .demo-info {
    font-size: 13px;
    margin-bottom: 12px;
  }
}

/* Extra small devices */
@media (max-width: 320px) {
  body {
    padding: 55px 8px 10px;
  }

  .theme-toggle {
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .container {
    padding: 18px 12px;
    width: 100%;
  }

  h1 {
    font-size: 1.2rem;
    margin-bottom: 15px;
  }

  #passwordInput {
    padding: 12px 40px 12px 14px;
    font-size: 16px;
  }

  .toggle-password {
    right: 14px;
    font-size: 14px;
  }

  .suggestions li {
    font-size: 12px;
    padding-left: 16px;
  }

  .demo-btn {
    padding: 10px 12px;
    font-size: 12px;
  }
}

/* Landscape mobile optimization */
@media (max-height: 600px) and (orientation: landscape) {
  body {
    align-items: flex-start;
    padding-top: 60px;
    padding-bottom: 10px;
  }

  .theme-toggle {
    top: 10px;
    right: 10px;
    width: 36px;
    height: 36px;
    font-size: 16px;
  }

  .container {
    margin: 10px auto;
    max-width: 600px;
  }

  h1 {
    margin-bottom: 12px;
    font-size: 1.3rem;
  }

  .demo-section {
    margin-top: 12px;
    padding: 12px;
  }

  .demo-buttons {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
  }

  .demo-btn {
    padding: 8px 12px;
    font-size: 12px;
    min-width: auto;
    flex: none;
  }
}

/* Touch-friendly improvements */
@media (max-width: 768px) {
  .demo-btn,
  .theme-toggle,
  .toggle-password {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }

  .theme-toggle:active,
  .demo-btn:active {
    transform: scale(0.95);
  }

  /* Ensure proper spacing for thumb navigation */
  .demo-btn {
    min-height: 44px;
  }

  .theme-toggle {
    min-width: 44px;
    min-height: 44px;
  }
}