/* --- Global Styles --- */
:root {
    --primary-color: #3498db;
    --primary-hover: #2980b9;
    --secondary-color: #2c3e50;
    --light-color: #ffffff;
    --gray-color: #ecf0f1;
    --dark-gray-color: #bdc3c7;
    --text-color: #34495e;
    --success-color: #2ecc71;
    --error-color: #e74c3c;
    --font-family: 'Assistant', sans-serif;
    --sidebar-width: 300px;
}

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

html {
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background-color: var(--gray-color);
    color: var(--text-color);
    line-height: 1.6;
    padding-left: var(--sidebar-width); /* Make space for the left sidebar */
    padding-top: 60px; /* Space for fixed nav */
    transition: padding-left 0.3s ease; /* For video mode */
}

h1, h2, h3 {
    margin-bottom: 15px;
    font-weight: 700;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; color: var(--primary-color); }

p {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

/* --- Utilities --- */
.hidden {
    display: none !important;
}

.ltr {
    direction: ltr;
    text-align: left;
}

.page {
    width: 100%;
    max-width: 1200px;
    margin: 30px auto;
    padding: 20px;
    background-color: var(--light-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    animation: fadeIn 0.3s ease-in-out;
    position: relative; /* For back button positioning */
}

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

/* --- Buttons --- */
.action-button, .nav-button, .back-button, .assignment-box, .quiz-option-btn, .admin-user-btn {
    font-family: var(--font-family);
    font-size: 1.1rem;
    font-weight: 600;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease-in-out;
    background-color: var(--primary-color);
    color: var(--light-color);
    text-decoration: none;
    display: inline-block;
}

.action-button:hover, .nav-button:hover, .back-button:hover, .assignment-box:hover, .quiz-option-btn:hover, .admin-user-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.action-button.large {
    font-size: 1.5rem;
    padding: 15px 30px;
}

.action-button.small {
    font-size: 1rem;
    padding: 8px 12px;
}

.action-button.secondary {
    background-color: var(--secondary-color);
}
.action-button.secondary:hover {
    background-color: #1a252f;
}


.back-button {
    background-color: var(--secondary-color);
    position: absolute;
    top: 15px;
    left: 15px;
    z-index: 10;
}
.back-button:hover { background-color: #34495e; }

/* --- Left Translate Sidebar --- */
.translate-sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--light-color);
    border-right: 1px solid var(--dark-gray-color);
    z-index: 1001; /* Above nav */
    padding: 20px;
    overflow-y: auto;
    transition: transform 0.3s ease;
}

/* --- Main Navigation --- */
.main-nav {
    position: fixed;
    top: 0;
    right: 0;
    left: var(--sidebar-width); /* Start after sidebar */
    width: calc(100% - var(--sidebar-width)); /* Full width minus sidebar */
    height: 60px;
    background-color: var(--secondary-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    z-index: 1000;
    transition: left 0.3s ease, width 0.3s ease;
}

.main-nav .nav-button {
    background: none;
    margin-left: 10px;
}
.main-nav .nav-button:hover {
    background: none;
    color: var(--primary-color);
    transform: none;
    box-shadow: none;
}
.main-nav .nav-brand .nav-button {
    font-size: 1.3rem;
    font-weight: 700;
}

/* --- Main Content Wrapper --- */
.main-content {
    width: 100%;
}

/* --- Home Page --- */
.home-container {
    text-align: center;
    padding: 50px 0;
}

/* --- Assignment Hub --- */
.assignments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}
.assignment-box {
    text-align: right;
    padding: 20px;
    border: 1px solid var(--primary-color);
    background-color: var(--light-color);
    color: var(--primary-color);
}
.assignment-box:hover {
    background-color: var(--primary-color);
    color: var(--light-color);
}
.assignment-box:hover h3, .assignment-box:hover p {
    color: var(--light-color);
}
.assignment-box h3 {
    margin-bottom: 10px;
}
.assignment-box p {
    font-size: 1rem;
    color: var(--text-color);
    margin: 0;
}
.assignment-box.completed {
    background-color: var(--success-color);
    border-color: var(--success-color);
    color: var(--light-color);
    opacity: 0.7;
}
.assignment-box.completed:hover {
    background-color: #27ae60;
}
.assignment-box.completed p, .assignment-box.completed h3 {
    color: var(--light-color);
}

/* --- Podcast Page --- */
.podcast-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.podcast-player {
    background-color: var(--gray-color);
    padding: 15px;
    border-radius: 8px;
}
.podcast-player h3 {
    margin-bottom: 10px;
}
.podcast-player audio {
    width: 100%;
}

/* --- YouTube Page --- */
.youtube-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
}
.youtube-grid .action-button {
    width: 100%;
    padding: 20px 10px;
    font-size: 1rem;
    text-align: center;
}

/* --- Video Player Page --- */
.video-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    max-width: 100%;
    background: #000;
    border-radius: 8px;
}
.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* --- Task Page --- */
#task-content {
    background-color: var(--gray-color);
    padding: 30px;
    border-radius: 8px;
}
#task-content h2 {
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}
#task-content ul {
    margin-right: 20px;
    margin-bottom: 15px;
}
#task-content .text-passage {
    background-color: var(--light-color);
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border: 1px solid var(--dark-gray-color);
}
#task-content .text-passage p {
    margin-bottom: 5px;
}
#task-content .action-button {
    margin-right: 10px;
    margin-top: 10px;
}

/* --- Quiz Page --- */
#quiz-container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}
#quiz-progress {
    font-size: 1rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 10px;
}
#quiz-question {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 30px;
    direction: ltr;
    text-align: left;
}
#quiz-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: 10px;
}
.quiz-option-btn {
    width: 100%;
    padding: 15px;
    font-size: 1.2rem;
    background-color: var(--light-color);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    text-align: left;
    direction: ltr;
}
.quiz-option-btn:hover {
    background-color: var(--primary-color);
    color: var(--light-color);
}
.quiz-option-btn.selected {
    background-color: var(--primary-color);
    color: var(--light-color);
}
.quiz-option-btn.correct {
    background-color: var(--success-color);
    border-color: var(--success-color);
    color: var(--light-color);
}
.quiz-option-btn.incorrect {
    background-color: var(--error-color);
    border-color: var(--error-color);
    color: var(--light-color);
    animation: shake 0.3s;
}
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

#quiz-feedback {
    margin-top: 20px;
    font-size: 1.3rem;
    font-weight: 700;
}
#quiz-feedback.correct {
    color: var(--success-color);
}
#quiz-feedback.incorrect {
    color: var(--error-color);
}

#quiz-next-btn {
    display: block;
    width: 100%;
    margin-top: 20px;
    padding: 15px;
    font-size: 1.2rem;
}

/* --- ABC Audio Page --- */
.audio-players-container {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
}
.audio-player {
    text-align: center;
}
.audio-player audio {
    margin-top: 5px;
}

/* --- Sentence Builder Page --- */
#built-sentence-container {
    min-height: 50px;
    border-bottom: 2px solid #ccc;
    margin-bottom: 20px;
    font-size: 1.5em;
    direction: ltr;
    text-align: left;
    padding: 10px;
    background: #fff;
    border-radius: 8px;
}

.quiz-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

/* --- Word Tool Styles (New Version) --- */
.word-tool-container {
    padding-top: 80px; /* Space for nav bar */
    text-align: center;
}
.word-tool-container h2 {
    color: var(--secondary-color);
    font-size: 1.5rem;
}
.word-tool-container p {
    font-size: 1rem;
}
.word-tool-controls {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 15px;
}
#word-input-auto {
    width: 100%;
    padding: 10px;
    font-size: 1.1rem;
    border: 1px solid var(--dark-gray-color);
    border-radius: 8px;
    direction: rtl; /* Start as RTL, but user can type anything */
}
#word-tool-btn {
    width: 100%;
}
#word-tool-results {
    padding: 15px;
    background-color: var(--gray-color);
    border-radius: 8px;
    min-height: 50px;
    text-align: left;
    direction: ltr;
    width: 100%;
    word-wrap: break-word;
}
#word-tool-results.loading {
    text-align: center;
    color: var(--secondary-color);
}
.result-block {
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--dark-gray-color);
}
.result-block:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}
.result-block h3 {
    font-size: 1.1rem;
    color: var(--primary-color);
    margin-bottom: 5px;
}
.result-block p {
    font-size: 1.2rem;
    margin-bottom: 0;
    word-wrap: break-word;
}
.result-block .hebrew {
    direction: rtl;
    text-align: right;
    font-size: 1.3rem;
    font-weight: bold;
}

/* --- Video Mode (Hides Sidebar) --- */
body.video-mode {
    padding-left: 0;
}
body.video-mode .translate-sidebar {
    transform: translateX(calc(var(--sidebar-width) * -1));
}
body.video-mode .main-nav {
    left: 0;
    width: 100%;
}

/* --- NEW: Presentation Styles --- */
.presentation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.presentation-container {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
    overflow: hidden;
    max-width: 100%;
    background: #000;
    border-radius: 8px;
}

.presentation-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* --- NEW: Mobile Responsive Styles --- */
.mobile-menu-button {
    display: none; /* Hidden on desktop */
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
}
.mobile-menu-button span {
    display: block;
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 5px 0;
    transition: all 0.3s ease;
}

/* This is the class JavaScript will add */
body.sidebar-open .translate-sidebar {
    transform: translateX(0);
}
body.sidebar-open .mobile-menu-button span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
body.sidebar-open .mobile-menu-button span:nth-child(2) {
    opacity: 0;
}
body.sidebar-open .mobile-menu-button span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}


@media (max-width: 768px) {
    body {
        padding-left: 0;
    }
    .translate-sidebar {
        transform: translateX(-100%); /* Hide sidebar by default on mobile */
        z-index: 2000; /* Ensure sidebar is above main content */
    }
    .main-nav {
        left: 0;
        width: 100%;
        padding: 0 10px 0 60px; /* Make room for menu button on the left */
    }
    .main-nav .nav-brand {
        margin-right: auto; /* Push brand to the right */
    }
    .mobile-menu-button {
        display: block;
        position: absolute;
        left: 10px;
        top: 8px;
        z-index: 2001; /* Above sidebar */
    }
    .page {
        margin: 15px auto;
        padding: 15px;
    }
    h1 { font-size: 2rem; }
    
    /* Stop sidebar from hiding in video mode on mobile (it's already hidden) */
    body.video-mode .translate-sidebar {
        transform: translateX(-100%);
    }
    body.video-mode .main-nav {
        left: 0;
        width: 100%;
    }
}

/* --- NEW: Tutorial Page Styles --- */
.tutorial-container {
    max-width: 600px;
    margin: 0 auto;
}
.tutorial-step {
    margin-bottom: 30px;
    text-align: center;
    border: 1px solid var(--dark-gray-color);
    border-radius: 8px;
    padding: 15px;
    background: var(--gray-color);
}
.tutorial-step p {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--secondary-color);
}
.tutorial-step img {
    width: 100%;
    max-width: 400px;
    margin-top: 10px;
    border-radius: 8px;
    border: 1px solid var(--dark-gray-color);
}
/* --- Auth & Admin Styles --- */
.auth-input {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    font-size: 1.1rem;
    border: 1px solid var(--dark-gray-color);
    border-radius: 8px;
    font-family: var(--font-family);
}

.error-msg {
    color: var(--error-color);
    font-weight: bold;
    margin-top: 10px;
}

/* Admin Table Styles matching assignment-box look */
.admin-user-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid var(--dark-gray-color);
    direction: ltr; /* English emails look better LTR */
}

.admin-user-row:last-child {
    border-bottom: none;
}

.admin-user-info {
    text-align: left;
}

.admin-user-info strong {
    color: var(--primary-color);
    display: block;
}

.admin-controls button {
    margin-left: 5px;
    font-size: 0.9rem;
    padding: 5px 10px;
}

.admin-btn-delete {
    background-color: var(--error-color);
}
.admin-btn-delete:hover {
    background-color: #c0392b;
}

/* Floating Admin Button */
#admin-switch-btn {
    position: fixed;
    bottom: 20px;
    left: 20px;
    z-index: 3000;
    background-color: var(--secondary-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
/* --- FORCED LOGIN OVERLAY STYLES --- */

/* Make Login and Signup pages cover EVERYTHING (Sidebar + Nav) */
#login-page, #signup-page {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 9999; /* Sit on top of everything */
    margin: 0;
    border-radius: 0;
    max-width: none;
    background-color: rgba(44, 62, 80, 0.95); /* Dark semi-transparent background */
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Center the box inside the overlay */
#login-page .tutorial-container, 
#signup-page .tutorial-container {
    background: var(--light-color);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

/* Hide the "Back" button on login page since you can't go back */
#login-page .back-button {
    display: none;
}

/* --- LOGOUT BUTTON STYLES --- */
.logout-style {
    background-color: var(--error-color) !important; /* Red */
    color: white !important;
    border-radius: 4px;
    margin-right: 15px;
    font-weight: bold;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
}

.logout-style:hover {
    background-color: #c0392b !important; /* Darker Red */
    transform: translateY(-2px);
}