/* styles.css */

/* VARIABLES & RESET */
/* defining reusable variables var(--variable-name) to use anywhere */

:root {
  /* my color palette from Coolors */
  --charcoal: #403f4c; /* text */
  --red: #e84855; /* alerts/emphasis */
  --yellow: #f9dc5c; /* highlights */
  --blue: #3185fc; /* interactive elements */
  --pink: #efbcd5; /* accent cards */
  
  /* lighter versions for backgrounds */
  --charcoal-light: #5a5968;
  --red-light: #ffebec;
  --yellow-light: #fffbef;
  --blue-light: #e8f4ff;
  --pink-light: #fdf5f9;
  
  /* semantic color names for readability */
  --header-bg: var(--blue-light);
  --main-bg: #fafafa;
  --white: #ffffff;
  --text-dark: var(--charcoal);
  --text-light: #666;
  
  /* button colors */
  --primary-blue: var(--blue);
  --secondary-blue: #5ba3fc;
  
  /* story angle card colors */
  --green-bg: var(--yellow-light);
  --green-border: var(--yellow);
  --orange-bg: var(--red-light);
  --orange-border: var(--red);
  --blue-bg: var(--blue-light);
  --blue-border: var(--blue);
  --purple-bg: var(--pink-light);
  --purple-border: var(--pink);
  --pink-bg: var(--pink-light);
  --pink-border: var(--pink);
  
  /* spacing variables for consistent spacing throughout */
  --spacing-sm: 1rem; /* 1rem = root fond size) */
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
}

/* universal selector, applies to everything on page */
/* CSS reset to ensure consistent design across browsers */

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

/* styles for the entire page */

body {
  /* adding a font stack - browser tries each font in order until it finds one installed */
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--main-bg);
  color: var(--text-dark);
  line-height: 1.6;
}

/* ==================== */
/* SCREEN MANAGEMENT */
/* ==================== */

.screen {
  min-height: 400px;
}

/* HEADER */

header {
  background-color: var(--header-bg);
  padding: var(--spacing-lg) var(--spacing-md); /* vertical-lg, horizontal-md spacing */
  text-align: center; /* centers all text inside */
  position: relative; /* not fully clear on child elements, but this allows absolute positioning on them */
  border-bottom: 3px solid var(--blue-light);
}

/* main heading inside of the header */
header h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

/* graf inside of the header */
header p {
  font-size: 1.1rem;
  max-width: 700px; /* improving readability by preventing it from getting too wide */
  margin: 0 auto; /* 0 top/bottom, auto left/right (horizontal centering) */
  color: var(--charcoal-light);
}

/* ==================== */
/* UPLOAD SECTION */
/* ==================== */

/* TODO create new class for upload container and */

#landing-screen {
  background-color: var(--main-bg);
  max-width: 900px;
  margin: var(--spacing-lg) auto; /* horizontal centering w/ auto margins */;
}

.upload-container h2 {
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.upload-container {
    background-color: var(--white);
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(64, 63, 76, 0.1);
}

/* Hide the actual file input */
input[type="file"] {
  display: none;
}

/* Style the label to look like the upload box */
.upload-button {
  display: block;
  width: 100%;
  padding: 3rem 2rem;
  background-color: var(--blue-light);
  border: 2px dashed var(--blue);
  border-radius: 8px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 1.1rem;
  color: var(--text-dark);
}

.upload-button:hover {
  background-color: #d9eeff;
  border-color: var(--secondary-blue);
  transform: translateY(-2px);
}

/* Drag-over state */
#upload-area.drag-over {
  background-color: #d9eeff;
  border-color: var(--secondary-blue);
  transform: scale(1.02);
}

/* Add the cloud icon */
.upload-button::before {
  content: "☁️";
  display: block;
  font-size: 3rem;
  margin-bottom: 0.5rem;
}

.divider {
  text-align: center;
  margin: var(--spacing-md) 0;
  color: var(--text-light);
  font-weight: 600;
}

/* Buttons */
.secondary-button {
  display: block;
  width: 100%;
  padding: 1rem;
  background-color: var(--blue);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.secondary-button:hover {
  background-color: var(--secondary-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(49, 133, 252, 0.3);
}

.requirements {
  margin-top: var(--spacing-md);
  font-size: 0.9rem;
  color: var(--text-light);
  text-align: center;
  line-height: 1.5;
}

.column-table {
    margin: var(--spacing-sm) auto;
    border-collapse: collapse;
    text-align: center;
    border-spacing: 0;
}

.column-table td {
    padding: 0.3rem 0.35rem;
    font-family: monospace;
    font-size: 0.6rem;
    color: var(--text-dark);
    border-right: 1px solid #e0e0e0;
    white-space: nowrap;
}

.column-table tr td:last-child {
    border-right: none;
}

/* ==================== */
/* LOADING SECTION */
/* ==================== */

#loading-screen {
  max-width: 600px;
  margin: var(--spacing-lg) auto;
  padding: var(--spacing-lg);
  background-color: var(--white);
  border-radius: 8px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(64, 63, 76, 0.1);
}

.loading-container h2 {
  margin-bottom: var(--spacing-md);
  color: var(--text-dark);
}

.loading-container p {
  color: var(--text-light);
  margin-bottom: 1rem;
}

/* Loading bar */
.spinner {
  width: 100%;
  height: 8px;
  background-color: #e0e0e0;
  border-radius: 4px;
  overflow: hidden;
  position: relative;
  margin-top: var(--spacing-md);
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--pink));
  width: 0%;
  transition: width 1.5s ease-in-out;
  border-radius: 4px;
}

/* ==================== */
/* ERROR SECTION */
/* ==================== */

#error-screen {
  max-width: 700px;
  margin: var(--spacing-lg) auto;
  padding: var(--spacing-lg);
  background-color: var(--white);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(64, 63, 76, 0.1);
}

.error-container h2 {
  color: var(--red);
  margin-bottom: var(--spacing-md);
}

.error-details {
  margin-bottom: var(--spacing-md);
}

.error-details p {
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.error-container h3 {
  margin-top: var(--spacing-md);
  margin-bottom: 0.5rem;
  font-size: 1rem;
  color: var(--text-dark);
}

.error-container ul {
  margin-left: 1.5rem;
  margin-bottom: var(--spacing-md);
}

.error-container li {
  margin-bottom: 0.5rem;
  color: var(--text-light);
}

.error-container button {
  margin-right: 1rem;
  margin-top: var(--spacing-md);
}

.primary-button {
  padding: 0.75rem 1.5rem;
  background-color: var(--blue);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.primary-button:hover {
  background-color: var(--secondary-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(49, 133, 252, 0.3);
}

/* ==================== */
/* VISUALIZATIONS SECTION */
/* ==================== */

#visualizations-screen {
  max-width: 1200px;
  margin: var(--spacing-lg) auto;
  padding: var(--spacing-md);
}

.usage-info {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.usage-info h2 {
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.usage-info p {
  color: var(--text-light);
}

.visualizations-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.viz-card {
  background-color: var(--white);
  padding: var(--spacing-md);
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(64, 63, 76, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.viz-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(64, 63, 76, 0.15);
}

.viz-card h3 {
  margin-bottom: var(--spacing-md);
  color: var(--text-dark);
  font-size: 1.3rem;
  flex-shrink: 0;
}

/* Chart containers */
#dog-names-chart,
#cat-names-chart,
#dog-breeds-chart,
#cats-dogs-chart {
  min-height: 300px;
  margin: var(--spacing-md) 0;
  flex-grow: 1;
  width: 100%;
}

/* Download buttons */
.download-button {
  width: 100%;
  padding: 0.75rem 1rem;
  background-color: var(--blue);
  color: white;
  border: none;
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 1rem;
}

.download-button:hover {
  background-color: var(--secondary-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(49, 133, 252, 0.3);
}

/* Attribution section */
.attribution-section {
  margin-top: auto;
  padding-top: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.attribution-section label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-dark);
}

.source-input {
  width: 100%;
  padding: 0.5rem;
  border: 2px solid #e0e0e0;
  border-radius: 4px;
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color 0.3s ease;
}

.source-input:focus {
  outline: none;
  border-color: var(--blue);
}

.source-input::placeholder {
  color: #999;
}

/* ==================== */
/* STORY IDEAS SECTION */
/* ==================== */

#story-ideas-section {
  max-width: 1200px;
  margin: var(--spacing-lg) auto;
  padding: var(--spacing-md);
  text-align: center;
}

#story-ideas-section h2 {
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.story-intro {
  color: var(--text-light);
  margin-bottom: var(--spacing-lg);
}

#story-ideas-container {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

/* Story cards */
.story-card {
  display: flex;
  align-items: flex-start;
  padding: var(--spacing-md);
  border-radius: 8px;
  border-left: 5px solid;
  background-color: var(--white);
  box-shadow: 0 2px 8px rgba(64, 63, 76, 0.1);
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.story-card:hover {
  transform: translateX(4px);
  box-shadow: 0 4px 16px rgba(64, 63, 76, 0.15);
}

/* Color variants for different story types */
.story-green { 
  border-left-color: var(--green-border);
  background-color: var(--green-bg);
}

.story-orange { 
  border-left-color: var(--orange-border);
  background-color: var(--orange-bg);
}

.story-blue { 
  border-left-color: var(--blue-border);
  background-color: var(--blue-bg);
}

.story-purple { 
  border-left-color: var(--purple-border);
  background-color: var(--purple-bg);
}

.story-pink { 
  border-left-color: var(--pink-border);
  background-color: var(--pink-bg);
}

.story-icon {
  font-size: 2.5rem;
  margin-right: var(--spacing-md);
  flex-shrink: 0;
}

.story-content {
  flex: 1;
}

.story-type {
  font-size: 0.75rem;
  font-weight: bold;
  text-transform: uppercase;
  color: var(--charcoal-light);
  margin-bottom: 0.5rem;
  letter-spacing: 0.5px;
}

.story-headline {
  font-size: 1.1rem;
  font-weight: bold;
  margin: 0.5rem 0 0.75rem 0;
  color: var(--text-dark);
  line-height: 1.4;
}

.story-detail {
  font-size: 0.95rem;
  color: var(--text-light);
  margin: 0;
  line-height: 1.5;
}

.copy-button {
  background-color: var(--blue);
  color: white;
  border: none;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 600;
  margin-left: var(--spacing-md);
  transition: all 0.3s ease;
  flex-shrink: 0;
  align-self: center;
}

.copy-button:hover {
  background-color: var(--secondary-blue);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(49, 133, 252, 0.3);
}

.copy-button.copied {
  background-color: var(--yellow);
  color: var(--text-dark);
}

/* ==================== */
/* FOOTER */
/* ==================== */

footer {
  background-color: var(--charcoal);
  color: var(--white);
  text-align: center;
  padding: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

footer p {
  margin: 0;
}

footer a {
  color: var(--yellow);
  text-decoration: none;
  transition: color 0.3s ease;
}

footer a:hover {
  color: var(--pink);
  text-decoration: underline;
}

/* ==================== */
/* PREVIEW SECTION */
/* ==================== */

.preview-section {
    max-width: 900px;
    margin: var(--spacing-lg) auto;
    padding: 0 var(--spacing-md);
    text-align: center;
}

.preview-section h2 {
    margin-bottom: var(--spacing-md);
    color: var(--text-dark);
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.preview-card {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(64, 63, 76, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.preview-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(64, 63, 76, 0.15);
}

.preview-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.preview-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.preview-card p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.5;
}

/* ==================== */
/* RESPONSIVE DESIGN */
/* ==================== */

@media (max-width: 768px) {
  header h1 {
    font-size: 2rem;
  }
  
  header p {
    font-size: 1rem;
  }
  
  .visualizations-grid {
    grid-template-columns: 1fr;
  }
  
  .viz-card {
    height: auto;
  }
  
  .story-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .story-icon {
    margin-right: 0;
    margin-bottom: 1rem;
  }
  
  .copy-button {
    margin-left: 0;
    margin-top: 1rem;
    width: 100%;
  }

  .preview-grid {
        grid-template-columns: 1fr;
    }
  
}

/* Making Data Commons credit attribution font smaller */

.source-credit {
  font-size: 0.8em;
  color: #888;
  margin-top: 8px;
}

/* ==================== */
/* ZIP CODE SEARCH */
/* ==================== */

#zip-search-section {
    max-width: 1200px;
    margin: var(--spacing-lg) auto;
    padding: var(--spacing-md);
}

#zip-search-section h2 {
    margin-bottom: 1rem;
}

#zip-search-section p {
    color: var(--text-light);
    margin-bottom: var(--spacing-md);
}

#zip-search-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: var(--spacing-md);
}

#zip-input {
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 6px;
    width: 200px;
    transition: border-color 0.3s ease;
}

#zip-input:focus {
    outline: none;
    border-color: var(--blue);
}

#zip-results-card {
    background-color: var(--white);
    border-radius: 8px;
    padding: var(--spacing-md);
    box-shadow: 0 2px 8px rgba(64, 63, 76, 0.1);
    border-left: 5px solid var(--blue);
}

#zip-results-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

#zip-results-card p {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.zip-error {
    color: var(--red);
}