/* ===================================
   Side Cloud Patterns
   =================================== */
.cloud-side {
  position: absolute;
  width: 260px;
  height: 120px;
  background-image: url("assets/background.png");
  background-repeat: no-repeat;
  background-size: contain;
  z-index: 2;
  pointer-events: none;
  opacity: 0.85;
}
.cloud-left {
  left: 0;
  top: 600px; /* will be set dynamically */
}
.cloud-right {
  right: 0;
  top: 900px; /* will be set dynamically */
}
@media (max-width: 900px) {
  .cloud-side {
    width: 160px;
    height: 80px;
  }
}
/* ===================================
   Footer Styles
   =================================== */

.footer {
  margin-top: 60px;
  padding: 32px 0 18px 0;
  text-align: center;
  color: #8a929b;
  font-size: 14px;
  background: none;
}
.footer-citation {
  margin-bottom: 8px;
  line-height: 1.5;
}
.footer-separator {
  width: 120px;
  height: 1px;
  background: #e0e0e0;
  margin: 14px auto;
}
.footer-copyright {
  font-size: 12px;
  margin-top: 8px;
}
/* ===================================
   CSS Reset & Base Styles
   =================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: "Arial Unicode MS", Arial, sans-serif;
  background-color: #ffffff;
  color: #000000;
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===================================
   Custom Font Definitions
   =================================== */

@font-face {
  font-family: "NomNaTong";
  src: url("Font/NomNaTong-Regular.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
}

@font-face {
  font-family: "1FTV Maglony";
  src: url("Font/1FTV-Maglony.ttf") format("truetype");
  font-weight: normal;
  font-style: normal;
}

.explanation-label,
.keyword-detail,
.keyword-citation {
  font-family: "NomNaTong", Arial, sans-serif;
}

.main-title {
  font-family: "1FTV Maglony", "Times New Roman", serif;
}

/* ===================================
   Cloud Pattern Decoration
   =================================== */

.cloud-pattern {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 350px;
  background-image: url("assets/background.png");
  background-repeat: repeat-x;
  background-position: top left;
  background-size: auto 180%;
  z-index: 1;
  pointer-events: none;
  opacity: 1;
}

/* ===================================
   Main Container
   =================================== */

.container {
  position: relative;
  z-index: 2;
  max-width: 1100px;
  margin: 0 auto;
  padding: 60px 20px 40px;
}

/* ===================================
   Title Section
   =================================== */

.title-section {
  text-align: center;
  margin-bottom: 50px;
  margin-top: 240px;
}

.main-title {
  font-size: 48px;
  font-weight: bold;
  color: #000000;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.subtitle {
  font-size: 15px;
  color: #808080;
  font-weight: normal;
  letter-spacing: 0.3px;
  line-height: 1.5;
}

/* ===================================
   Form Container
   =================================== */

.form-container {
  background: #ffffff;
  border-radius: 20px;
  padding: 45px 60px 50px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid #e8e8e8;
  max-width: 880px;
  margin: 0 auto 40px;
}

/* ===================================
   Form Elements
   =================================== */

.form-group {
  margin-bottom: 32px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: #000000;
  margin-bottom: 14px;
  letter-spacing: 0.3px;
}

.form-group input[type="text"],
.form-group select {
  width: 100%;
  padding: 18px 24px;
  font-size: 15px;
  font-family: "Arial Unicode MS", Arial, sans-serif;
  border: 1px solid #d4d4d4;
  border-radius: 8px;
  background-color: #ffffff;
  transition: all 0.3s ease;
  color: #000000;
}

.form-group input[type="text"]:focus,
.form-group select:focus {
  outline: none;
  border-color: #999999;
  background-color: #ffffff;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.form-group input[type="text"]::placeholder {
  color: #999999;
  font-style: italic;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23666' d='M1.41 0L6 4.59L10.59 0L12 1.41l-6 6l-6-6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 24px center;
  background-size: 14px;
  padding-right: 55px;
}

/* ===================================
   Submit Button
   =================================== */

.submit-btn {
  width: 100%;
  padding: 20px 32px;
  font-size: 15px;
  font-weight: 600;
  font-family: "Arial Unicode MS", Arial, sans-serif;
  color: #ffffff;
  background-color: #000000;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 20px;
  letter-spacing: 0.3px;
  position: relative;
  overflow: hidden;
}

.submit-btn:hover {
  background-color: #1a1a1a;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.submit-btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.submit-btn:disabled {
  background-color: #cccccc;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Button Loading State */
.btn-loader {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

/* Spinner Animation */
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid #ffffff;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ===================================
   Error Message
   =================================== */

.error-message {
  margin-top: 20px;
  padding: 15px;
  background-color: #ffebee;
  border-left: 4px solid #c62828;
  border-radius: 4px;
  color: #c62828;
  font-size: 14px;
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===================================
   Output Section
   =================================== */

.output-section {
  max-width: 880px;
  margin: 40px auto;
  animation: fadeIn 0.5s ease;
}

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

.poem-container {
  background: #ffffff;
  border-radius: 20px;
  padding: 50px 60px 55px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  border: 1px solid #e8e8e8;
}

.output-title {
  font-family: "1FTV Maglony", "Times New Roman", serif;
  font-size: 28px;
  font-weight: normal;
  color: #000000;
  margin-bottom: 35px;
  text-align: center;
  border-bottom: 1px solid #d4d4d4;
  padding-bottom: 25px;
  letter-spacing: 0.5px;
}

.poem-output {
  font-family: "Arial Unicode MS", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.9;
  color: #000000;
  white-space: pre-wrap;
  word-wrap: break-word;
  text-align: center;
  margin-bottom: 35px;
  padding: 0;
  background-color: transparent;
  border-radius: 0;
  border-left: none;
}

/* ===================================
   Keywords Section & Explanation
   =================================== */

.poem-separator {
  width: 120px;
  height: 1px;
  background-color: #d4d4d4;
  margin: 40px auto 35px;
}

.explanation-section {
  margin-top: 40px;
  border-top: 1px solid #d4d4d4;
  padding-top: 35px;
}

.explanation-title {
  font-family: "1FTV Maglony", "Times New Roman", serif;
  font-size: 28px;
  font-weight: normal;
  color: #000000;
  text-align: center;
  margin-bottom: 30px;
  letter-spacing: 0.5px;
}
.explanation-label {
  font-weight: normal;
  color: #000;
  opacity: 1;
}
.keyword-detail,
.keyword-citation {
  opacity: 0.7;
}

.keyword-item {
  margin-bottom: 30px;
  padding: 20px;
  background-color: #fafafa;
  border-radius: 12px;
  border: 1px solid #e8e8e8;
}

.keyword-item h4 {
  font-size: 16px;
  font-weight: 700;
  color: #000000;
  margin-bottom: 15px;
  text-transform: capitalize;
}

.keyword-detail {
  margin-bottom: 12px;
  line-height: 1.7;
  font-size: 15px;
  color: #333333;
  font-weight: normal;
}

.keyword-detail strong {
  color: #666666;
  font-weight: 600;
  opacity: 0.8;
}

.keyword-citation {
  margin-top: 0px;
  margin-left: 12px;
  margin-bottom: 12px;
  padding-left: 22px;
  border-left: 3px solid #d4a853;
  font-style: italic;
  color: #666666;
  font-size: 15px;
  line-height: 1.2;
  background: none;
}

.keywords-section {
  margin-top: 25px;
  padding-top: 20px;
  border-top: 1px solid #e0e0e0;
  display: none;
}

.keywords-section h3 {
  font-size: 16px;
  color: #666666;
  margin-bottom: 12px;
  font-weight: 600;
}

.keywords-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.keyword-tag {
  display: inline-block;
  padding: 6px 14px;
  background-color: #f5f5f5;
  color: #333333;
  border-radius: 20px;
  font-size: 14px;
  border: 1px solid #e0e0e0;
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 768px) {
  .cloud-pattern {
    height: 250px;
  }

  .container {
    padding: 40px 15px 30px;
  }

  .title-section {
    margin-top: 170px;
    margin-bottom: 40px;
  }

  .main-title {
    font-size: 32px;
  }

  .subtitle {
    font-size: 14px;
  }

  .form-container {
    padding: 35px 30px 40px;
    border-radius: 16px;
  }

  .form-group {
    margin-bottom: 24px;
  }

  .poem-container {
    padding: 35px 30px 40px;
    border-radius: 16px;
  }

  .output-title {
    font-size: 24px;
    margin-bottom: 28px;
    padding-bottom: 20px;
  }

  .poem-output {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 28px;
  }

  .explanation-title {
    font-size: 18px;
    margin-bottom: 24px;
  }

  .keyword-item {
    padding: 16px;
    margin-bottom: 20px;
  }

  .keyword-item h4 {
    font-size: 15px;
  }

  .keyword-detail {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .main-title {
    font-size: 24px;
  }

  .subtitle {
    font-size: 13px;
  }

  .form-container {
    padding: 25px 20px;
  }

  .poem-container {
    padding: 25px 20px 30px;
  }

  .output-title {
    font-size: 20px;
    margin-bottom: 24px;
    padding-bottom: 18px;
  }

  .poem-output {
    font-size: 15px;
    line-height: 1.75;
  }

  .explanation-title {
    font-size: 17px;
    margin-bottom: 20px;
  }

  .keyword-item {
    padding: 14px;
    margin-bottom: 16px;
  }

  .keyword-item h4 {
    font-size: 14px;
  }

  .keyword-detail {
    font-size: 13px;
  }
}

/* ===================================
   Utility Classes
   =================================== */

.hidden {
  display: none !important;
}

.fade-in {
  animation: fadeIn 0.5s ease;
}

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

/* ===================================
   Accessibility Improvements
   =================================== */

/* Focus visible for keyboard navigation */
*:focus-visible {
  outline: 2px solid #000000;
  outline-offset: 2px;
}

/* Screen reader only content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}