/* Root color variables for easy theme changes */
:root {
  --color-primary: #4361ee;
  --color-primary-light: #4895ef;
  --color-primary-dark: #3a0ca3;
  --color-secondary: #4cc9f0;
  --color-accent: #f72585;
  --color-success: #4caf50;
  --color-error: #f44336;
  --color-neutral-50: #f8fafc;
  --color-neutral-100: #f1f5f9;
  --color-neutral-200: #e2e8f0;
  --color-neutral-300: #cbd5e1;
  --color-neutral-800: #22223b;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --shadow-md: 0 4px 6px -1px rgba(67, 97, 238, 0.08),
    0 2px 4px -1px rgba(67, 97, 238, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(67, 97, 238, 0.1),
    0 4px 6px -2px rgba(67, 97, 238, 0.05);
}

/* General Layout */
body {
  font-family: "Segoe UI", Arial, sans-serif;
  background: var(--color-neutral-50);
  color: var(--color-neutral-800);
  margin: 0;
  padding: 0;
  font-size: 1.18em;
}

.container {
  width: 100vw;
  min-height: 100vh;
  background: var(--color-neutral-50);
  margin: 0;
  padding: 0;
}

.main-content {
  width: 80vw;
  max-width: 1200px;
  margin: 2rem auto;
  background: #fff;
  border-radius: 1.2rem;
  box-shadow: var(--shadow-md);
  padding: 2rem 1.5rem;
  box-sizing: border-box;
  font-size: 1.12em;
}

/* Instructions Panel - Remove bottom curves like word analysis */
.instructions-panel {
  width: 100%;
  margin: 0 auto 1.5rem auto;
  background: transparent;
  border-radius: 0;
  box-shadow: none;
  padding: 0;
  border: none;
}

.instructions-header {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.55rem;
  font-weight: 700;
  color: #22223b;
  background: linear-gradient(90deg, #6ef2e6 0%, #4895ef 100%);
  margin: 0;
  padding: 1.1rem 0;
  cursor: pointer;
  user-select: none;
  border-radius: 1.2rem 1.2rem 0 0; /* Only top curves */
  transition: background 0.2s;
  letter-spacing: 0.01em;
  box-shadow: var(--shadow-md);
}

.instructions-header .arrow-icon {
  margin-left: 0.7em;
  font-size: 1.5em;
  color: #3a0ca3;
  transition: transform 0.2s;
}

.instructions-content {
  background: #fff;
  color: #22223b;
  border-radius: 0; /* No curves at bottom */
  padding: 1.2rem 2rem 1.2rem 2rem;
  font-size: 1.18em;
  margin: 0;
  border-top: 1px solid var(--color-neutral-200);
  box-shadow: var(--shadow-md);
}

.instructions-list {
  margin: 0;
  padding-left: 1.2em;
  font-size: 1.1em;
}

.instructions-list li {
  margin-bottom: 0.7em;
}

/* Two-Pane Layout - Fixed proportions and containment */
#main-2pane-container {
  display: flex;
  flex-direction: row;
  gap: 1.5rem;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
  overflow: hidden; /* Prevent content from spilling out */
}

/* Left pane - exactly 25% width */
#left-pane {
  flex: 0 0 25% !important; /* Fixed 25% width, no grow/shrink */
  width: 25% !important;
  max-width: 25% !important;
  min-width: 280px; /* Minimum for usability */
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  box-sizing: border-box;
  font-size: 1.15em;
  overflow: hidden; /* Prevent overflow */
}

/* Right pane - takes remaining 75% width */
#right-pane {
  flex: 1 !important; /* Takes all remaining space (75%) */
  width: 75% !important;
  max-width: 75% !important;
  min-width: 0; /* Allow shrinking if needed */
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  box-sizing: border-box;
  font-size: 1.15em;
  overflow-x: auto; /* Allow horizontal scroll for large tables */
  overflow-y: visible;
}

/* Dropdown - shorter width in left pane */
select {
  width: 85% !important; /* Reduced from 100% to 85% */
  max-width: 250px !important; /* Reduced from 320px to 250px */
  padding: 0.9rem 1.3rem;
  border: 2px solid var(--color-primary);
  border-radius: 0.7rem;
  font-size: 1.22em;
  margin-bottom: 1.2rem;
  background: #fff;
  color: var(--color-neutral-800);
  transition: border-color 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 6px rgba(67, 97, 238, 0.06);
  font-weight: 500;
}

select:focus {
  border-color: var(--color-primary-dark);
  outline: none;
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.12);
}

/* Corpus Sentences */
.corpus-content {
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  font-size: 1.13em;
  width: 100%;
  box-sizing: border-box;
}

.corpus-sentence {
  margin-bottom: 0.25em;
  padding-left: 1.5em;
  color: #3a0ca3;
  font-size: 1.18em;
  font-weight: 500;
  width: 100%;
  box-sizing: border-box;
}

/* Buttons */
.sim-button,
button {
  background: linear-gradient(
    90deg,
    var(--color-primary) 60%,
    var(--color-secondary) 100%
  );
  color: #fff;
  border: none;
  border-radius: 2.2rem;
  font-size: 1.28rem;
  font-weight: 700;
  padding: 0.95rem 2.5rem;
  margin: 0.4rem;
  box-shadow: 0 2px 6px rgba(67, 97, 238, 0.08);
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s;
  min-width: 140px;
  min-height: 48px;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.sim-button:disabled,
button:disabled {
  background: #bfc9d1;
  color: #fff;
  cursor: not-allowed;
  opacity: 0.7;
}

.sim-button:hover:not(:disabled),
button:hover:not(:disabled) {
  background: linear-gradient(
    90deg,
    var(--color-primary-dark) 60%,
    var(--color-accent) 100%
  );
  box-shadow: 0 4px 12px rgba(67, 97, 238, 0.12);
  transform: translateY(-2px);
}

.button-row {
  display: flex;
  justify-content: center;
  gap: 18px;
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

/* Table Styling - proper containment */
.transition-matrix-table {
  width: 100%;
  max-width: 100%; /* Ensure table doesn't exceed container */
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: #fff;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-neutral-200);
  table-layout: auto; /* Allow flexible column sizing */
  box-sizing: border-box;
}

/* Table container to handle overflow */
.table-container {
  width: 100%;
  overflow-x: auto;
  overflow-y: visible;
  box-sizing: border-box;
}

.transition-matrix-table th,
.transition-matrix-table td {
  border: 1px solid var(--color-neutral-300);
  padding: 0.85em 0.7em;
  text-align: center;
  font-size: 1.08em;
  box-sizing: border-box;
  min-width: 60px; /* Minimum column width */
}

.transition-matrix-table th {
  background: var(--color-neutral-100);
  color: var(--color-primary-dark);
  font-weight: 700;
  letter-spacing: 0.01em;
}

.transition-matrix-table tr:nth-child(even) td {
  background: var(--color-neutral-50);
}

.transition-matrix-table input.ngram-input {
  width: 100%;
  min-width: 48px;
  max-width: 80px;
  padding: 0.45em 0.7em;
  font-size: 1.08em;
  border: 2px solid var(--color-neutral-300);
  border-radius: 0.7rem;
  background: #fff;
  color: var(--color-neutral-800);
  box-sizing: border-box;
  text-align: center;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.transition-matrix-table input.ngram-input:focus {
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.1);
}

.transition-matrix-table input.ngram-input.correct {
  border-color: var(--color-success);
  background: rgba(76, 175, 80, 0.1);
}

.transition-matrix-table input.ngram-input.incorrect {
  border-color: var(--color-error);
  background: rgba(244, 67, 54, 0.1);
}

/* Feedback */
#feedback {
  margin: 1rem 0;
  font-weight: 600;
  text-align: center;
  color: var(--color-error);
}

#feedback span {
  color: var(--color-success);
}

#sentence-probability-container {
  margin-top: 2rem;
  width: 100%;
  box-sizing: border-box;
}

.sentence-prob-input-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  margin-top: 0.7em;
  flex-wrap: wrap; /* Allow wrapping on smaller screens */
}

.sentence-prob-quiz {
  background: var(--color-neutral-100);
  border-radius: 1rem;
  padding: 1.2rem 2rem;
  border: 1px solid var(--color-neutral-200);
  margin-bottom: 1.5rem;
  width: 100%;
  box-sizing: border-box;
}

.sentence-prob-quiz > div:first-child,
#sentenceProbFeedback {
  text-align: center;
  width: 100%;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.sentence-prob-table {
  width: 100%;
  max-width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  box-sizing: border-box;
}

.sentence-prob-table th,
.sentence-prob-table td {
  border: 1px solid var(--color-neutral-300);
  padding: 0.7em 1em;
  text-align: center;
  font-size: 1.08em;
  box-sizing: border-box;
}

.sentence-prob-table th {
  background: var(--color-neutral-100);
  color: var(--color-primary-dark);
  font-weight: 700;
}

#sentenceProbInput {
  width: 140px;
  padding: 0.5em 1em;
  font-size: 1.08em;
  border: 2px solid var(--color-neutral-300);
  border-radius: 0.7rem;
  margin-right: 0.7em;
  background: #fff;
  color: var(--color-neutral-800);
  box-sizing: border-box;
}

#sentenceProbFeedback {
  margin-top: 0.7em;
  font-weight: 600;
  color: var(--color-error);
}

#sentenceProbFeedback span {
  color: var(--color-success);
}

/* Responsive */
@media (max-width: 1200px) {
  #main-2pane-container {
    gap: 1rem; /* Reduce gap on smaller screens */
  }

  #left-pane {
    min-width: 250px; /* Slightly smaller minimum width */
  }
}

@media (max-width: 900px) {
  .main-content {
    width: 98vw;
    padding: 1rem 0.2rem;
    display: flex;
    flex-direction: column;
    align-items: center; /* Center all content horizontally */
  }

  #main-2pane-container {
    flex-direction: column;
    gap: 1.5rem;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center; /* Center child elements horizontally */
  }

  /* Left pane becomes centered and appears first */
  #left-pane {
    flex: none !important;
    max-width: 90% !important;
    width: 90% !important;
    min-width: 0 !important;
    margin: 0 auto 1rem auto; /* Center horizontally with bottom margin */
    order: 1; /* First in mobile */
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center; /* Center content within the pane */
  }

  /* Right pane appears below left pane and centered */
  #right-pane {
    flex: none !important;
    max-width: 90% !important;
    width: 90% !important;
    min-width: 0 !important;
    margin: 0 auto; /* Center horizontally */
    order: 2; /* Second in mobile */
    box-sizing: border-box;
    overflow-x: auto;
    overflow-y: visible;
    display: flex;
    flex-direction: column;
    align-items: center; /* Center content within the pane */
  }

  select {
    width: 100% !important;
    max-width: 100% !important;
  }
}

@media (max-width: 600px) {
  .main-content {
    padding: 0.5rem 0.2rem;
  }

  .instructions-panel {
    padding: 0.7rem 0.5rem;
  }

  .sentence-prob-quiz {
    padding: 0.7rem 0.5rem;
  }

  .transition-matrix-table th,
  .transition-matrix-table td,
  .sentence-prob-table th,
  .sentence-prob-table td {
    padding: 0.3em 0.2em;
    font-size: 0.95em;
  }

  .sim-button,
  button {
    font-size: 1rem;
    padding: 0.7rem 1.2rem;
    min-width: 100px;
  }

  .sentence-prob-input-row {
    flex-direction: column;
    gap: 0.8rem;
  }

  #sentenceProbInput {
    width: 120px;
    margin-right: 0;
  }

  /* Additional mobile centering for very small screens */
  #left-pane,
  #right-pane {
    max-width: 95% !important;
    width: 95% !important;
  }
}

/* Ensure all content is properly contained */
* {
  box-sizing: border-box;
}

/* Additional table overflow handling */
#right-pane table {
  table-layout: auto;
  word-wrap: break-word;
}

/* Ensure proper sizing for large tables like Corpus C */
@media (min-width: 901px) {
  .transition-matrix-table {
    font-size: 0.95em; /* Slightly smaller font to fit more content */
  }

  .transition-matrix-table th,
  .transition-matrix-table td {
    padding: 0.7em 0.5em; /* Slightly tighter padding */
  }

  .transition-matrix-table input.ngram-input {
    max-width: 70px; /* Slightly smaller input fields */
    padding: 0.4em 0.5em;
  }
}

/* Landscape orientation alert styles */
.landscape-alert {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  color: white;
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  padding: 2rem;
  text-align: center;
}

.landscape-alert h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--color-primary-light);
}

.landscape-alert p {
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  max-width: 600px;
}

.landscape-alert .rotate-icon {
  font-size: 3rem;
  margin: 1rem 0;
  animation: rotate 2s infinite;
  color: var(--color-secondary);
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  25% {
    transform: rotate(90deg);
  }
  50% {
    transform: rotate(90deg);
  }
  75% {
    transform: rotate(90deg);
  }
  100% {
    transform: rotate(0deg);
  }
}