/* CSS Custom Properties for Easy Theming */
:root {
  --primary-color: #667eea;
  --primary-dark: #5a6fd8;
  --secondary-color: #764ba2;
  --success-color: #48bb78;
  --error-color: #f56565;
  --warning-color: #ed8936;
  
  --text-primary: #2d3748;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  
  --bg-primary: #ffffff;
  --bg-secondary: #f7fafc;
  --bg-input: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #667eea;
  
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

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

html {
  font-size: 16px;
  line-height: 1.5;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  color: var(--text-primary);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
  padding: 0.75rem;
}

/* Container and Layout */
.container {
  max-width: 28rem;
  margin: 0 auto;
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  min-height: calc(100vh - 1.5rem);
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Header */
.header {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  padding: 1rem 1.5rem 1.25rem 1.5rem;
  text-align: center;
}

.header-image {
  width: 100%;
  margin: 0;
  display: block;
}

.title {
  font-family: 'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 1.875rem;
  font-weight: 800;
  margin-bottom: 0;
  margin-top: 0;
  letter-spacing: -0.05em;
  line-height: 1.1;
  text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.subtitle {
  font-size: 0.8rem;
  opacity: 0.9;
  font-weight: 400;
  line-height: 1.3;
  margin-top: 0.25rem;
}

/* Main Content */
.main {
  flex: 1;
  padding: 1.25rem 1.5rem 1rem 1.5rem;
}

/* Form Styles */
.feedback-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.form-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.form-label.required::after {
  content: '*';
  color: var(--error-color);
  font-weight: 600;
}

.optional {
  font-weight: 400;
  color: var(--text-muted);
  font-size: 0.75rem;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.625rem;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--bg-input);
  transition: all var(--transition-fast);
  resize: vertical;
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-textarea {
  min-height: 6.5rem;
  line-height: 1.5;
  font-family: inherit;
}

/* Character Count */
.character-count {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: right;
  margin-top: -0.25rem;
}

/* Error Messages */
.error-message {
  color: var(--error-color);
  font-size: 0.875rem;
  font-weight: 500;
  display: none;
  padding: 0.5rem 0.75rem;
  background: rgba(245, 101, 101, 0.1);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--error-color);
}

.error-message.show {
  display: block;
  animation: slideIn 0.3s ease-out;
}

/* Submit Button */
.submit-button {
  width: 100%;
  padding: 0.75rem 1.5rem;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  min-height: 2.875rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.submit-button:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.submit-button:active:not(:disabled) {
  transform: translateY(0);
}

.submit-button:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.submit-button.loading .button-text {
  opacity: 0;
}

.submit-button.loading .button-spinner {
  opacity: 1;
}

.button-spinner {
  position: absolute;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

/* Success Message */
.success-message {
  display: none;
  text-align: center;
  padding: 2rem;
  background: rgba(72, 187, 120, 0.1);
  border-radius: var(--radius-md);
  border: 1px solid rgba(72, 187, 120, 0.2);
  margin: 0 auto;
  max-width: 100%;
  /* Ensure proper centering */
  justify-content: center;
  align-items: center;
}

.success-message.show {
  display: flex;
  flex-direction: column;
  animation: fadeInScale 0.5s ease-out;
}

.success-icon {
  margin: 0 auto 1rem;
  display: flex;
  justify-content: center;
}

.success-message h3 {
  color: var(--success-color);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.success-message p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.4;
}

/* Footer */
.footer {
  padding: 1rem 1.5rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  text-align: center;
}

.footer p {
  font-size: 0.7rem;
  color: var(--text-muted);
  line-height: 1.3;
  margin: 0;
}

/* Validation States */
.form-input.error,
.form-textarea.error {
  border-color: var(--error-color);
  box-shadow: 0 0 0 3px rgba(245, 101, 101, 0.1);
}

.form-input.success,
.form-textarea.success {
  border-color: var(--success-color);
  box-shadow: 0 0 0 3px rgba(72, 187, 120, 0.1);
}

/* Animations */
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-0.5rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInScale {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Responsive Design */
@media (max-width: 320px) {
  body {
    padding: 0.5rem;
  }
  
  .container {
    min-height: calc(100vh - 1rem);
  }
  
  .header {
    padding: 1.5rem 1rem;
  }
  
  .main {
    padding: 1.5rem 1rem;
  }
  
  .title {
    font-size: 1.25rem;
  }
}

@media (min-width: 480px) {
  .container {
    max-width: 32rem;
  }
}

@media (min-width: 768px) {
  body {
    padding: 2rem;
  }
  
  .container {
    max-width: 36rem;
    min-height: calc(100vh - 4rem);
  }
  
  .header {
    padding: 2.5rem 2rem;
  }
  
  .main {
    padding: 2.5rem 2rem;
  }
  
  .title {
    font-size: 1.75rem;
  }
  
  .subtitle {
    font-size: 1rem;
  }
}

/* Focus Management for Accessibility */
.form-input:focus-visible,
.form-textarea:focus-visible,
.submit-button:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000000;
    --text-muted: #000000;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Setup Message */
.setup-message {
  display: none;
  text-align: center;
  padding: 2rem;
  background: rgba(237, 137, 54, 0.1);
  border-radius: var(--radius-md);
  border: 1px solid rgba(237, 137, 54, 0.2);
}

.setup-message.show {
  display: block;
  animation: fadeInScale 0.5s ease-out;
}

.setup-icon {
  margin: 0 auto 1rem;
  display: flex;
  justify-content: center;
}

.setup-message h3 {
  color: var(--warning-color);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.setup-message p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
  margin-bottom: 1rem;
}

.setup-message ol {
  text-align: left;
  max-width: 400px;
  margin: 1rem auto;
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.4;
}

.setup-message ol li {
  margin-bottom: 0.5rem;
}

.setup-message code {
  background: rgba(0, 0, 0, 0.1);
  padding: 0.125rem 0.25rem;
  border-radius: 3px;
  font-family: monospace;
  font-size: 0.8em;
}

.setup-message a {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
}

.setup-message a:hover {
  text-decoration: underline;
}

.retry-button {
  background: var(--warning-color);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  margin-top: 1rem;
}

.retry-button:hover {
  background: #d97626;
  transform: translateY(-1px);
}

/* Pencil Animation Styles */
.textarea-container {
  position: relative;
}

/* Pencil Animation Container */
.pencil-animation {
  position: relative;
  width: 100%;
  height: 60px;
  margin: 15px 0;
  overflow: hidden;
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  border-radius: 8px;
  border: 1px solid #e2e8f0;
}

/* Simple Animated Pencil */
.animated-pencil {
  position: absolute;
  top: 50%;
  left: 20px;
  transform: translateY(-50%) rotate(-10deg);
  width: 50px;
  height: 8px;
  transition: left 0.3s ease-out;
}

.pencil-body {
  position: absolute;
  left: 8px;
  top: 0;
  width: 35px;
  height: 8px;
  background: linear-gradient(180deg, #fbbf24 0%, #f59e0b 100%);
  border-radius: 4px;
  border: 1px solid #d97706;
}

.pencil-tip {
  position: absolute;
  left: 0;
  top: 2px;
  width: 0;
  height: 0;
  border-top: 2px solid transparent;
  border-bottom: 2px solid transparent;
  border-right: 10px solid #374151;
}

.pencil-eraser {
  position: absolute;
  right: 0;
  top: 1px;
  width: 6px;
  height: 6px;
  background: #ef4444;
  border-radius: 3px;
}

/* Floating animation when not typing */
.pencil-animation.floating .animated-pencil {
  animation: pencilFloat 2s ease-in-out infinite;
}

@keyframes pencilFloat {
  0%, 100% { 
    transform: translateY(-50%) rotate(-10deg);
  }
  50% { 
    transform: translateY(-50%) rotate(-10deg) translateY(-3px);
  }
}

/* Paper with handwritten feedback */
.feedback-paper {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  width: 90%;
  max-width: 500px;
  height: 600px;
  background: #fefefe;
  border-radius: 8px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  opacity: 0;
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
}

.feedback-paper.show {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.feedback-paper.folding {
  transform: translate(-50%, -50%) scale(0.1) rotateX(90deg);
  opacity: 0;
}

.paper-content {
  padding: 40px;
  height: 100%;
  overflow-y: auto;
  position: relative;
}

.paper-lines {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: repeating-linear-gradient(
    transparent,
    transparent 31px,
    #e2e8f0 31px,
    #e2e8f0 32px
  );
  pointer-events: none;
}

.handwritten-text {
  font-family: 'Kalam', cursive;
  font-size: 18px;
  line-height: 32px;
  color: #1e293b;
  margin: 0;
  padding-top: 20px;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.paper-close {
  position: absolute;
  top: 15px;
  right: 15px;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: #64748b;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.2s;
}

.paper-close:hover {
  background-color: #f1f5f9;
}

.paper-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.paper-overlay.show {
  opacity: 1;
}

.pencil {
  opacity: 1 !important; /* Force visibility */
  background: yellow; /* Debug background */
  border: 2px solid green; /* Debug border */
  transform-origin: center center;
  position: absolute;
  width: 20px;
  height: 4px;
  pointer-events: none;
  z-index: 10;
}

.writing-path {
  fill: none;
  stroke: #333;
  stroke-width: 2;
  stroke-linecap: round;
  opacity: 0;
}

/* Show path for debugging */
.writing-path.debug {
  opacity: 0.3;
  stroke: red;
}

/* Writing path animation */
@keyframes drawPath {
  from {
    stroke-dashoffset: 1000;
  }
  to {
    stroke-dashoffset: 0;
  }
}

.writing-path path {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
}

.writing-path.animating path {
  animation: drawPath 3s ease-in-out forwards;
}

/* Pencil floating animation when not writing */
@keyframes pencilFloat {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-2px) rotate(1deg);
  }
}

.pencil.floating {
  animation: pencilFloat 2s ease-in-out infinite;
}

/* Pencil writing motion */
.pencil.writing {
  animation: none;
}

/* Enhanced form textarea to work with animation */
.form-textarea {
  position: relative;
  z-index: 2;
  background: rgba(255, 255, 255, 0.95);
}

.form-textarea:focus {
  background: rgba(255, 255, 255, 0.98);
}

/* Responsive pencil animation */
@media (max-width: 768px) {
  .pencil-animation {
    opacity: 0.7;
  }
  
  .pencil {
    transform: scale(0.8);
  }
}