/* --- GOOGLE FONT --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* --- CSS VARIABLES --- */
:root {
  --font-sans: 'Inter', sans-serif;
  --color-bg: #f3f4f6;
  --color-text-primary: #1f2937;
  --color-text-secondary: #4b5563;
  --color-text-subtle: #6b7280;
  --color-primary: #0891b2; /* cyan-600 */
  --color-primary-hover: #0e7490; /* cyan-700 */
  --color-secondary: #0d9488; /* teal-600 */
  --color-secondary-hover: #0f766e; /* teal-700 */
  --color-border: #e5e7eb;
  --color-card-bg: rgba(255, 255, 255, 0.7);
  --color-input-bg: #ffffff;
  --color-disabled-bg: #9ca3af;
  --color-disabled-text: #e5e7eb;
  --color-error-bg: #fee2e2;
  --color-error-border: #fca5a5;
  --color-error-text: #b91c1c;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-full: 9999px;
}

/* --- BASE STYLES --- */
.word-counter-container {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  max-width: 56rem; /* max-w-4xl */
  margin: auto;
  padding: 1.5rem; /* p-6 */
}

/* --- HEADER --- */
.wc-header {
  text-align: center;
  margin-bottom: 2rem;
}

.wc-title {
  font-size: 2.25rem; /* text-4xl */
  font-weight: 800; /* font-extrabold */
  background-image: linear-gradient(to right, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.wc-description {
  margin-top: 0.75rem;
  font-size: 1.125rem; /* text-lg */
  color: var(--color-text-secondary);
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

/* --- MAIN LAYOUT & INPUTS --- */
.wc-main {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.wc-inputs {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.wc-url-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.wc-input, .wc-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--color-input-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: box-shadow 0.2s, border-color 0.2s;
  color: var(--color-text-primary);
  box-sizing: border-box;
}
.wc-input:focus, .wc-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.4);
}

.wc-textarea-wrapper {
  position: relative;
}

.wc-textarea {
  min-height: 300px;
  resize: vertical;
}

/* --- BUTTONS --- */
.wc-button {
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: background-color 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.wc-button-primary {
  background-color: var(--color-primary);
  color: white;
}
.wc-button-primary:hover {
  background-color: var(--color-primary-hover);
}

.wc-button-secondary {
  background-color: var(--color-secondary);
  color: white;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}
.wc-button-secondary:hover {
  background-color: var(--color-secondary-hover);
}

.wc-button:disabled {
  background-color: var(--color-disabled-bg);
  color: var(--color-disabled-text);
  cursor: not-allowed;
}

.wc-clear-button {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-subtle);
  background-color: #e5e7eb;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
}
.wc-clear-button:hover {
  background-color: #d1d5db;
  color: var(--color-text-primary);
}


/* --- ANALYSIS SECTION & CARDS --- */
.wc-analysis-section {
  width: 100%;
}

.wc-results-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.wc-card {
  background-color: var(--color-card-bg);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(229, 231, 235, 0.8);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.wc-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.wc-card-title {
  font-size: 1.25rem; /* text-xl */
  font-weight: 700;
  margin: 0;
}

.wc-placeholder {
  text-align: center;
  padding: 2rem;
}
.wc-placeholder h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
}
.wc-placeholder p {
  color: var(--color-text-secondary);
  margin-top: 0.5rem;
}


/* --- STATS DISPLAY --- */
.wc-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1rem;
}

.wc-stat-item {
  background-color: #f9fafb;
  border-radius: var(--radius-md);
  padding: 1rem;
  border: 1px solid var(--color-border);
  text-align: center;
}
.wc-stat-item span {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.25rem;
}
.wc-stat-item strong {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-primary);
}


/* --- KEYWORD LIST --- */
.wc-keywords-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.wc-keyword-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.25rem;
  font-size: 0.875rem;
}
.wc-keyword-word {
  font-weight: 500;
  text-transform: capitalize;
}
.wc-keyword-count {
  font-size: 0.75rem;
  font-weight: 600;
  background-color: #e5e7eb;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
}
.wc-keyword-bar-bg {
  width: 100%;
  background-color: #e5e7eb;
  border-radius: var(--radius-full);
  height: 0.5rem;
}
.wc-keyword-bar-fg {
  background-image: linear-gradient(to right, var(--color-primary), var(--color-secondary));
  height: 100%;
  border-radius: var(--radius-full);
}

/* --- SUMMARY --- */
.wc-summary-content {
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}
.wc-summary-placeholder, .wc-summary-loader {
  text-align: center;
  padding: 2rem 0;
  color: var(--color-text-secondary);
  font-size: 0.875rem;
}
.wc-summary-loader {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
}
.wc-summary-text {
  line-height: 1.6;
  color: var(--color-text-secondary);
}


/* --- LOADERS & ALERTS --- */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.wc-loader-sm {
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
.wc-summary-loader .wc-loader-sm {
  border-color: rgba(0,0,0,0.1);
  border-top-color: var(--color-secondary);
}

.wc-loader-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  min-height: 200px;
  background-color: var(--color-card-bg);
  border-radius: var(--radius-lg);
  font-weight: 600;
  color: var(--color-text-secondary);
}
.wc-loader-lg {
  width: 2.5rem;
  height: 2.5rem;
  border: 4px solid rgba(0,0,0,0.1);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

.wc-error-alert {
  background-color: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  color: var(--color-error-text);
  padding: 1rem;
  border-radius: var(--radius-lg);
}
.wc-error-alert-nested {
  border-radius: var(--radius-md);
  margin-top: 1rem;
}

/* --- RESPONSIVE STYLES --- */
@media (min-width: 640px) {
  .wc-title {
    font-size: 3rem; /* sm:text-5xl */
  }
  .wc-url-form {
    flex-direction: row;
    align-items: center;
  }
  .wc-button-primary {
    flex-shrink: 0;
    width: auto;
  }
  .wc-results-grid {
     grid-template-columns: repeat(1, 1fr);
  }
}

@media (min-width: 1024px) {
  .wc-textarea {
    min-height: 400px;
  }
}