/* App-specific styles for Vocab Trainer */
:root {
    --theme-primary: #10B981;
    --theme-primary-light: #34D399;
    --theme-primary-dark: #059669;
    --theme-secondary-accent: #2DD4BF;
    --theme-primary-bg: #F0FDF4;
    --theme-secondary-bg: #DCFCE7;
    --theme-text-on-primary: #ffffff;
    
    --theme-primary-rgb: 16, 185, 129; /* RGB for transparent colors */
    
    --app-bg-main: #FFFFFF;
    --app-bg-page: var(--theme-primary-bg);
    --app-bg-sidebar: var(--theme-secondary-bg);
    --app-border-color: #D0F2DA;
    --app-btn-disabled-bg-new: #BCDDC6;
    --app-btn-disabled-text-new: #6B8B79;
    --app-text-color-light: #546E7A;
}

main > .page-section:first-of-type {
    background-color: var(--app-bg-page);
}

.app-container {
  border: 1px solid var(--app-border-color);
  border-radius: 24px;
  overflow-x: auto;
  background-color: var(--app-bg-main);
  text-align: left;
  transition: all 0.3s ease-in-out;
  max-width: 100%;
}
.app-header {
  display: grid;
  grid-template-columns: 1fr 13fr 1fr;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.5rem;
  background-color: var(--theme-primary);
  color: var(--theme-text-on-primary);
  border-bottom: 1px solid var(--theme-primary-dark);
}
.app-header-title {
    grid-column: 2;
    text-align: center;
    padding: 0 1rem;
}
.app-header .btn-icon {
    justify-self: end;
}
.app-header h2 {
    font-size: 1.2rem;
    margin: 0;
}
.app-main {
  display: grid;
  grid-template-columns: minmax(240px, 34%) 1fr;
}

.app-sidebar, .app-content {
  padding: 1.5rem;
  min-width: 0;
}
.app-sidebar {
    border-right: 1px solid var(--app-border-color);
    display: flex;
    flex-direction: column;
    background-color: var(--app-bg-sidebar);
}
.app-sidebar section {
  margin-bottom: 1rem;
}
.app-sidebar section:last-child {
    margin-top: auto;
    margin-bottom: 0;
    padding-top: 1rem;
}
.app-sidebar h3 {
  font-size: 1.1rem;
  border-bottom: 2px solid var(--theme-primary);
  padding-bottom: 0.5rem;
  margin-bottom: 0.5rem;
}
.form-group {
    margin-bottom: 1rem;
}
.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
}
.form-group textarea {
    width: 100%;
    min-height: 120px;
    padding: 0.75rem;
    border: 1px solid var(--app-border-color);
    border-radius: 24px;
    font-family: inherit;
    resize: vertical;
    background-color: #ffffff;
}
.info-box {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background-color: #ffffff;
    border-radius: 24px;
    font-size: 0.85rem;
    line-height: 1.4;
    border-left: 4px solid var(--theme-primary);
    margin: 1rem 0;
}
.info-box i {
    font-size: 1.5rem;
    color: var(--theme-primary);
    margin-top: 0.25rem;
}
.info-box a {
    color: var(--theme-primary);
    font-weight: 600;
}
.actions-message {
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px dashed var(--app-border-color);
    border-radius: 24px;
    margin-bottom: 0.5rem;
    min-height: 50px; /* Sized to be similar to the action buttons below */
    padding: 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    color: var(--text-color);
    transition: all 0.3s ease;
}
.app-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.app-actions .btn {
    flex: 1;
}
.app-actions .btn-primary {
    background-color: var(--theme-primary);
    color: var(--theme-text-on-primary);
}
.app-actions .btn-primary:hover {
    background-color: var(--theme-primary-dark);
}

.app-container .btn:disabled,
.app-container .btn-primary:disabled,
.app-container .btn-secondary:disabled {
  background-color: var(--app-btn-disabled-bg-new);
  color: var(--app-btn-disabled-text-new);
  border-color: transparent;
  opacity: 1;
}

.btn-icon {
    background: none;
    border: 1px solid transparent;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--theme-text-on-primary);
    cursor: pointer;
    transition: background-color 0.2s ease;
}
.btn-icon:hover {
    background-color: rgba(255, 255, 255, 0.1);
}
.btn-icon .fa-compress {
    display: none;
}
.app-container.is-focused .btn-icon .fa-expand {
    display: none;
}
.app-container.is-focused .btn-icon .fa-compress {
    display: inline-block;
}

/* === Focus Mode === */
body.focus-mode-active {
    overflow: hidden; /* Default for desktop */
}

/* Hide everything else when in focus mode */
body.focus-mode-active .site-header,
body.focus-mode-active .site-footer,
body.focus-mode-active main > *:not(#app-section-wrapper) {
    display: none;
}

body.focus-mode-active #app-section-wrapper {
    padding: 0;
    background-color: transparent; /* Remove section-specific background */
}

body.focus-mode-active #app-section-wrapper .container {
    max-width: none;
    padding: 0;
}

.app-container.is-focused {
    border-radius: 0;
    border: none;
    display: flex;
    flex-direction: column;
    width: 100%;
}

.app-container.is-focused .app-main {
    flex-grow: 1;
    min-height: 0;
}

.app-container.is-focused .app-sidebar,
.app-container.is-focused .app-content {
    display: flex;
    flex-direction: column;
}

/* More balanced compact styles for focus mode */
.app-container.is-focused .app-header {
    padding: 1rem 1.5rem;
}
.app-container.is-focused .app-header-title {
    padding: 0 0.5rem;
}
.app-container.is-focused .app-header h2 {
    font-size: 1.1rem;
}
.app-container.is-focused .app-sidebar,
.app-container.is-focused .app-content {
    padding: 1rem;
}
.app-container.is-focused .app-sidebar section {
    margin-bottom: 0.5rem;
}
.app-container.is-focused .app-sidebar section:last-child {
    margin-top: auto;
    padding-top: 1rem;
}
.app-container.is-focused .app-sidebar h3 {
    margin-bottom: 0.5rem;
    padding-bottom: 0.35rem;
    font-size: 1rem;
}
.app-container.is-focused .info-box {
    margin: 0.5rem 0;
    padding: 0.85rem 1rem;
}
.app-container.is-focused .form-group textarea {
    min-height: 120px;
}
/* === End Focus Mode === */


.trainer-viewer {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.trainer-question-area,
.trainer-feedback,
.trainer-input {
    max-width: 580px;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}

.trainer-status {
    display: grid;
    grid-template-columns: 1fr 3fr 1fr;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.progress-container {
    grid-column: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}
.swap-container {
    grid-column: 3;
    display: flex;
    justify-content: center;
    align-items: center;
    justify-self: center;
}
.swap-control-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}
.card-counter {
    font-weight: 700;
    font-size: 1.2rem;
}
.progress-bar {
    width: 80%;
    height: 12px;
    background-color: var(--app-border-color);
    border-radius: 12px;
    overflow: hidden;
    margin: 0 auto;
    display: flex; /* Changed for segments */
}

/* New Progress Bar Segment Styles */
.progress-segment {
    height: 100%;
    transition: background-color 0.3s ease;
}
.progress-segment--correct {
    background-color: var(--theme-primary);
}
.progress-segment--incorrect {
    background-color: rgba(220, 53, 69, 0.5); /* Semi-transparent red for errors */
}


.swap-label {
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
}

.toggle-control {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    font-size: 1.2rem;
    color: var(--text-color);
}
.toggle-control input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}
.toggle-ui {
    position: relative;
    width: 40px;
    height: 22px;
    background-color: var(--app-border-color);
    border-radius: 11px;
    transition: background-color 0.2s ease-in-out;
    flex-shrink: 0;
}
.toggle-ui::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background-color: white;
    border-radius: 50%;
    box-shadow: 0 1px 2px rgba(0,0,0,0.2);
    transition: transform 0.2s ease-in-out;
}
.toggle-control input:checked + .toggle-ui {
    background-color: var(--theme-primary);
}
.toggle-control input:checked + .toggle-ui::after {
    transform: translateX(18px);
}

.trainer-question-area {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1rem;
    border: 1px solid var(--app-border-color);
    border-radius: 24px;
    background-color: #fff;
    position: relative;
    overflow: hidden;
}
.trainer-intro-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.trainer-intro-content p {
  font-size: 1.5rem;
  color: var(--app-text-color-light);
  font-weight: 500;
  line-height: 1.4;
}
.trainer-intro-content i {
  margin-bottom: 1rem;
  font-size: 2.5rem;
  color: var(--text-color);
}
p.question-text {
    font-weight: 700;
    line-height: 1.3;
    font-size: 3rem; /* Fallback/default size, same as md */
    transition: font-size 0.3s ease;
}

.question-text.font-size-xl { font-size: 4.5rem; }
.question-text.font-size-lg { font-size: 3.75rem; }
.question-text.font-size-md { font-size: 3rem; }
.question-text.font-size-sm { font-size: 2.25rem; }

.trainer-feedback {
    min-height: 80px; /* Placeholder height */
    padding: 0.75rem;
    margin-top: 1rem;
    border-radius: 24px;
    text-align: center;
    font-weight: 600;
    font-size: 1rem;
    opacity: 0;
    transform: translateY(-5px);
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.3s ease, color 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}
.trainer-feedback.is-correct,
.trainer-feedback.is-incorrect,
.trainer-feedback.is-info {
    opacity: 1;
    transform: translateY(0);
}
.trainer-feedback.is-correct {
    color: #155724;
    background-color: #d4edda;
}
.trainer-feedback.is-incorrect {
    color: #721c24;
    background-color: #f8d7da;
}
.trainer-feedback.is-info {
    color: #0c5460;
    background-color: #d1ecf1;
}

input.trainer-input {
    width: 100%;
    padding: 0.9rem;
    margin-top: 1rem;
    border: 2px solid var(--app-border-color);
    border-radius: 24px;
    font-size: 1.1rem;
    text-align: center;
    background-color: #ffffff;
    transition: border-color 0.2s ease;
}
input.trainer-input:focus {
    outline: none;
    border-color: var(--theme-primary);
}

.trainer-controls {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    margin-top: auto;
    padding-top: 1.5rem;
}
.trainer-controls .btn-primary {
    background-color: var(--theme-primary);
    color: var(--theme-text-on-primary);
}
.trainer-controls .btn-primary:hover {
    background-color: var(--theme-primary-dark);
}

/* === Unified Responsive Styles === */

/* Large desktops */
@media (min-width: 768px) {
    .app-container:not(.is-focused) .app-header {
        padding-top: 0.5rem;
        padding-bottom: 0.5rem;
    }
    
    .app-container.is-focused {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%; /* More reliable than 100vw */
        height: calc(var(--vh, 1vh) * 100); /* Fix for vh units */
        z-index: 2000;
    }
    .app-container.is-focused .app-main {
        grid-template-columns: minmax(240px, 25%) 1fr;
    }

    .app-container.is-focused .app-main,
    .app-container.is-focused .app-sidebar {
        overflow-y: auto;
    }

    .app-container.is-focused .trainer-question-area,
    .app-container.is-focused .trainer-feedback,
    .app-container.is-focused .trainer-input {
        max-width: 720px;
    }
}

@media (min-width: 768px) and (max-width: 992px) {
     /* Make layout more compact vertically for tablets */
    .app-sidebar, .app-content {
        padding: 0.75rem;
    }
    .app-sidebar h3 {
        font-size: 1rem;
        margin-bottom: 0.25rem;
    }
    .info-box {
        margin: 0.5rem 0;
        padding: 0.75rem;
    }
    .trainer-status {
        margin-bottom: 0.5rem;
    }
    .trainer-feedback, .trainer-input {
        margin-top: 0.5rem;
    }
    .trainer-controls {
        padding-top: 0.5rem;
    }
}

/* Tablet & Mobile */
@media (max-width: 992px) {
    .trainer-controls {
        grid-template-columns: 1fr 1fr;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .app-main {
        grid-template-columns: 1fr;
    }
    .app-sidebar {
        border-right: none;
        border-bottom: 1px solid var(--app-border-color);
    }
    .trainer-status {
        grid-template-columns: 2fr 1fr;
        gap: 0.5rem;
    }
    .progress-container, .swap-container {
        grid-column: span 1;
    }

    .trainer-question-area {
        min-height: 280px;
    }

    body.focus-mode-active {
        overflow: auto;
    }
    .app-container.is-focused {
        position: static;
        height: auto;
        min-height: calc(var(--vh, 1vh) * 100); /* Fix for vh units */
    }
    .app-container.is-focused .app-main,
    .app-container.is-focused .app-sidebar {
        overflow-y: visible;
    }
    
    .app-container:not(.is-focused) .app-header {
        padding-top: 1.15rem;
        padding-bottom: 1.15rem;
    }
    
    .app-actions .btn,
    .trainer-controls .btn {
        padding-top: 0.8rem;
        padding-bottom: 0.8rem;
    }

    .question-text.font-size-xl { font-size: 3.5rem; }
    .question-text.font-size-lg { font-size: 3rem; }
    .question-text.font-size-md { font-size: 2.4rem; }
    .question-text.font-size-sm { font-size: 1.8rem; }
}

/* Small mobile */
@media (max-width: 480px) {
    .trainer-status .swap-label {
        display: none;
    }
    .question-text.font-size-xl { font-size: 2.8rem; }
    .question-text.font-size-lg { font-size: 2.4rem; }
    .question-text.font-size-md { font-size: 2.0rem; }
    .question-text.font-size-sm { font-size: 1.6rem; }
}

/* Vocab trainer status messages */
.actions-message.actions-message--success {
    color: #155724;
    background-color: #d4edda;
    border: 1px solid #c3e6cb;
}
.actions-message.actions-message--error {
    color: #721c24;
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
}
.actions-message.actions-message--info {
    color: #0c5460;
    background-color: #d1ecf1;
    border: 1px solid #bee5eb;
}

/* Vocab trainer completion message as a card state */
.trainer-question-area.is-completed {
    background-color: #d4edda;
    color: #155724;
}
.trainer-question-area.is-completed .trainer-intro-content {
    color: inherit; /* Inherit green color from parent */
}
.trainer-question-area.is-completed .trainer-intro-content p {
    font-size: 1.2rem;
    margin: 0;
    color: inherit;
}

/* This rule ensures the completion icon is on its own line */
.trainer-question-area.is-completed .trainer-intro-content i {
    margin-bottom: 1rem;
    color: inherit;
    font-size: 3rem;
}

.trainer-question-area.is-completed .trainer-intro-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
    .trainer-question-area.is-completed .trainer-intro-content i {
        font-size: 2.5rem;
    }
     .trainer-question-area.is-completed .trainer-intro-content h3 {
        font-size: 1.3rem;
    }
    .trainer-question-area.is-completed .trainer-intro-content p {
        font-size: 1.1rem;
    }
}