/* --- START OF FILE style.css --- */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --primary: #4f46e5; /* Slightly different Indigo */
    --secondary: #7c3aed; /* Vibrant Purple */
    --accent: #ec4899; /* Pink */
    --success: #10b981; /* Emerald */
    --warning: #f59e0b; /* Amber */
    --danger: #ef4444; /* Red */

    /* Light Mode Defaults */
    --bg-primary: #f9fafb;     /* Very light gray */
    --bg-secondary: #ffffff;   /* White (for cards, modals) */
    --text-primary: #111827;   /* Very dark gray (near black) */
    --text-secondary: #4b5563; /* Medium Gray */
    --text-muted: #6b7280;    /* Gray */
    --border-color: #e5e7eb;  /* Light border */
    --link-color: var(--primary);

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol';
    --border-radius: 8px;
    --transition-speed: 0.2s;
}

.dark-mode {
    --primary: #6366f1; /* Lighter Indigo for dark */
    --secondary: #a78bfa; /* Lighter Purple */
    --accent: #f472b6; /* Lighter Pink */
    --success: #34d399; /* Lighter Emerald */
    --warning: #fbbf24; /* Lighter Amber */
    --danger: #f87171; /* Lighter Red */

    /* Dark Mode Overrides */
    --bg-primary: #111827;     /* Very dark blue-gray */
    --bg-secondary: #1f2937;   /* Dark gray (cards, modals) */
    --text-primary: #f3f4f6;   /* Very light gray (near white) */
    --text-secondary: #d1d5db; /* Light Gray */
    --text-muted: #9ca3af;    /* Medium Gray */
    --border-color: #374151;  /* Darker border */
    --link-color: var(--primary);

    --shadow-sm: 0 1px 2px 0 rgb(255 255 255 / 0.03);
    --shadow-md: 0 4px 6px -1px rgb(255 255 255 / 0.05), 0 2px 4px -2px rgb(255 255 255 / 0.05);
    --shadow-lg: 0 10px 15px -3px rgb(255 255 255 / 0.05), 0 4px 6px -4px rgb(255 255 255 / 0.05);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px; /* Base font size */
}

body {
    font-family: var(--font-sans);
    line-height: 1.7; /* Improved readability */
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 100%;
    max-width: 1280px; /* Slightly wider max */
    margin: 0 auto;
    padding: 0 1.5rem; /* More horizontal padding */
}

.sr-only { /* Unchanged */
    position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border-width: 0;
}

/* --- Header --- */
header {
    background-color: var(--primary);
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-speed) ease;
}
.header-container { display: flex; justify-content: space-between; align-items: center; }
.logo { display: flex; align-items: center; gap: 0.6rem; font-size: 1.6rem; font-weight: 700; color: white; text-decoration: none; }
.logo i { font-size: 1.9rem; }

nav ul { display: flex; list-style: none; gap: 1rem; margin: 0; padding: 0; } /* Reduced gap slightly */
nav a {
    color: white;
    text-decoration: none;
    padding: 0.5rem 0.8rem; /* Adjusted padding */
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
    font-weight: 500;
}
nav a:hover, nav a.active { background-color: rgba(255, 255, 255, 0.15); }

.nav-actions { display: flex; align-items: center; gap: 1rem; }
.search-bar { position: relative; display: flex; align-items: center; }
.search-bar input {
    padding: 0.5rem 1rem 0.5rem 2.5rem;
    border: 1px solid transparent; /* Add border for focus */
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    width: 220px;
    transition: all var(--transition-speed) ease;
    font-size: 0.9rem;
}
.search-bar input::placeholder { color: rgba(255, 255, 255, 0.6); }
.search-bar input:focus {
    outline: none;
    width: 280px;
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.2); /* Focus ring */
}
.search-bar i { position: absolute; left: 0.9rem; color: rgba(255, 255, 255, 0.6); pointer-events: none; }

.theme-toggle {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1.3rem; /* Slightly larger */
    transition: transform var(--transition-speed) ease;
    padding: 0.4rem;
}
.theme-toggle:hover { transform: scale(1.1) rotate(10deg); }
.mobile-menu-btn { display: none; background: none; border: none; color: white; font-size: 1.6rem; cursor: pointer; padding: 0.4rem; }

.profile-link,
.login-link {
    color: white;
    text-decoration: none;
    font-size: 1.2rem;
    transition: opacity var(--transition-speed) ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.profile-link:hover,
.login-link:hover {
    opacity: 0.8;
    background: rgba(255, 255, 255, 0.2);
}

/* --- Hero Section --- */
.hero {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 5rem 1.5rem; /* More padding */
    text-align: center;
    border-bottom-left-radius: 20px; /* Subtle curve */
    border-bottom-right-radius: 20px;
}
.hero h1 { font-size: 2.8rem; margin-bottom: 1rem; font-weight: 700; text-shadow: 1px 1px 3px rgba(0,0,0,0.1); }
.hero p { font-size: 1.25rem; max-width: 750px; margin: 0 auto 2.5rem; opacity: 0.95; line-height: 1.8; }
.hero-buttons { display: flex; justify-content: center; flex-wrap: wrap; gap: 1.2rem; margin-top: 2rem; }

/* --- Buttons --- */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem; /* Adjusted padding */
    border-radius: 50px;
    text-decoration: none;
    transition: all var(--transition-speed) ease;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent; /* Prepare for outline/focus */
    font-size: 1rem;
}
.btn:focus-visible { /* Accessibility focus */
    outline: none;
    box-shadow: 0 0 0 3px var(--primary);
    opacity: 0.8;
}
.dark-mode .btn:focus-visible { box-shadow: 0 0 0 3px var(--primary); opacity: 0.8; }

.btn-primary { background-color: rgb(0, 0, 0); color: var(--primary); }

.btn-outline { background: transparent; color: rgb(0, 0, 0); border-color: rgb(0, 0, 0); }

/* --- Section Title --- */
.section-title {
    text-align: center;
    margin: 4rem 0 2.5rem; /* More vertical margin */
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* --- Comic Cards --- */
.comics-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); /* Slightly larger min */
    gap: 2.5rem; /* Increased gap */
    padding: 1rem 0 4rem;
}
.comic-card {
    background-color: var(--bg-secondary);
    color: var(--text-primary); /* Set text color explicitly */
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease, border-color var(--transition-speed) ease;
    position: relative;
    opacity: 0; /* For fade-in */
    transform: translateY(30px); /* For fade-in */
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color); /* Subtle border */
}
.comic-card.is-visible { opacity: 1; transform: translateY(0); }
.comic-card.hidden { display: none; }

.comic-card.locked::before {
    content: '\f023';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.5rem;
    border-radius: 50%;
    z-index: 1;
}

.comic-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.comic-image {
    width: 100%;
    height: 320px; /* Adjusted height */
    object-fit: cover;
    display: block;
    background-color: var(--border-color); /* Placeholder bg */
    flex-shrink: 0;
    border-bottom: 1px solid var(--border-color);
}

.comic-info { padding: 1.5rem; display: flex; flex-direction: column; flex-grow: 1; }
.comic-info > div:first-child { flex-grow: 1; } /* Pushes actions down */
.comic-title {
    font-size: 1.25rem;
    margin-bottom: 0.6rem;
    font-weight: 600;
    color: var(--text-primary); /* Ensure override */
}

.comic-level {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.75rem; /* Slightly smaller */
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid transparent; /* Base border */
}
/* Updated level colors for better contrast */
.beginner { background-color: #dcfce7; color: #166534; border-color: #bbf7d0; }
.intermediate { background-color: #dbeafe; color: #1d4ed8; border-color: #bfdbfe; }
.advanced { background-color: #fee2e2; color: #b91c1c; border-color: #fecaca; }
.dark-mode .beginner { background-color: #14532d33; color: #86efac; border-color: #22c55e33; }
.dark-mode .intermediate { background-color: #1e40af33; color: #93c5fd; border-color: #3b82f633; }
.dark-mode .advanced { background-color: #991b1b33; color: #fca5a5; border-color: #ef444433; }

.comic-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: calc(1.7 * 3 * 1em); /* Based on line-height */
    font-size: 0.95rem;
}

.comic-actions {
    margin-top: auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color); /* Separator */
}
.comic-link { /* "Read Online" button */
    display: inline-block;
    padding: 0.6rem 1.2rem; /* Adjusted size */
    border-radius: 50px;
    background-color: var(--primary);
    color: white;
    text-decoration: none;
    font-weight: 500; /* Adjusted weight */
    font-size: 0.9rem;
    transition: all var(--transition-speed) ease;
    border: 1px solid transparent;
}
.comic-link:hover {
    background-color: var(--secondary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.comic-link:disabled { /* Style disabled state */
    background-color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.7;
}
.dark-mode .comic-link:disabled { background-color: var(--border-color); color: var(--text-muted); }

.vocab-assistant-btn { /* "V" button */
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--accent);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-speed) ease;
    z-index: 5;
    flex-shrink: 0;
    margin-left: 10px;
    font-size: 1.1rem; /* Make 'V' slightly larger */
    font-weight: 600;
}
.vocab-assistant-btn:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-md);
}
.dark-mode .vocab-assistant-btn { /* Ensure visibility */
    box-shadow: 0 2px 5px rgba(255, 255, 255, 0.1);
}

/* --- Vocabulary Modal --- */
.vocab-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(17, 24, 39, 0.8); /* Darker overlay using dark bg color */
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2500;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed) ease, visibility 0s linear var(--transition-speed);
}
.vocab-modal.active { opacity: 1; visibility: visible; transition-delay: 0s; }

.vocab-content {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 650px; /* Wider */
    max-height: 85vh;
    overflow-y: auto;
    padding: 2rem 2.5rem; /* More padding */
    position: relative;
    transform: scale(0.95) translateY(10px);
    transition: transform var(--transition-speed) ease;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}
.vocab-modal.active .vocab-content { transform: scale(1) translateY(0); }

.vocab-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.8rem; /* Larger close icon */
    cursor: pointer;
    color: var(--text-muted);
    padding: 0.3rem;
    line-height: 1;
    transition: color var(--transition-speed) ease, transform var(--transition-speed) ease;
}
.vocab-close:hover { color: var(--danger); transform: rotate(90deg); }

.vocab-title {
    font-size: 1.7rem;
    margin-bottom: 2rem; /* More space */
    color: var(--text-primary);
    font-weight: 600;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}
.vocab-list { list-style: none; padding: 0; margin: 0; }
.vocab-item {
    margin-bottom: 1.8rem; /* Increased spacing */
    padding-bottom: 1.8rem;
    border-bottom: 1px solid var(--border-color);
}
.vocab-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }

.vocab-word-container { display: flex; align-items: center; margin-bottom: 0.6rem; flex-wrap: wrap; gap: 0.5rem; }
.vocab-word {
    font-size: 1.3rem; /* Larger word */
    font-weight: 600;
    color: var(--primary);
}
.pronunciation {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-style: italic;
}

.play-audio-btn {
    background: none;
    border: none;
    color: var(--primary);
    cursor: pointer;
    font-size: 1.2em; /* Adjusted size */
    padding: 0 0.3em;
    vertical-align: middle;
    transition: color 0.2s, transform 0.2s;
}
.play-audio-btn:hover { color: var(--secondary); transform: scale(1.15); }
.play-audio-btn.playing i { color: var(--accent); animation: pulse 0.6s infinite alternate; }
.dark-mode .play-audio-btn { color: var(--accent); }
.dark-mode .play-audio-btn:hover { color: var(--text-primary); }
.dark-mode .play-audio-btn.playing i { color: var(--text-primary); }
@keyframes pulse { 0% { transform: scale(1); } 100% { transform: scale(1.15); } }

.vocab-definition { margin-bottom: 0.8rem; color: var(--text-primary); font-size: 1.05rem; line-height: 1.8;}
.vocab-example {
    font-style: italic;
    color: var(--text-muted);
    padding-left: 1rem;
    border-left: 3px solid var(--border-color);
    font-size: 0.95rem;
}

/* --- Image Viewer Modal --- */
.image-viewer-modal { /* Unchanged much, uses vars */
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(17, 24, 39, 0.9); display: flex; align-items: center; justify-content: center; z-index: 2000; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}
.image-viewer-modal.active { opacity: 1; visibility: visible; transition: opacity 0.3s ease; }

.viewer-container { /* Unchanged much, uses vars */
    width: 95%; height: 95vh; max-width: 1400px; background: var(--bg-secondary); position: relative; display: flex; flex-direction: column; border-radius: var(--border-radius); overflow: hidden; box-shadow: var(--shadow-lg); border: 1px solid var(--border-color);
}

.viewer-header { /* Unchanged much, uses vars */
    display: flex; justify-content: space-between; align-items: center; padding: 0.8rem 1.5rem; background: var(--primary); color: white; flex-shrink: 0;
}
.viewer-title { font-size: 1.2rem; font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-right: 1rem; }
.viewer-controls { display: flex; align-items: center; gap: 0.8rem; flex-wrap: nowrap; }
.viewer-control-btn { background: none; border: none; color: white; cursor: pointer; font-size: 1.3rem; padding: 0.4rem; line-height: 1; transition: color var(--transition-speed) ease; }
.viewer-control-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.viewer-control-btn:hover:not(:disabled) { color: #e0e0e0; }
#imagePageInfo { font-size: 0.9rem; margin: 0 0.5rem; white-space: nowrap; }

.viewer-content { /* Unchanged much, uses vars */
    flex: 1; overflow: auto; background-color: var(--bg-primary); padding: 0; position: relative; display: flex; justify-content: center; align-items: center;
}
.image-wrapper { position: relative; display: inline-block; transform-origin: 0 0; transition: transform 0.2s ease-out; }
#comicImageViewer { display: block; max-width: 100%; max-height: 100%; object-fit: contain; cursor: grab; background-color: white; } /* White bg for transparent parts */
.dark-mode #comicImageViewer { background-color: var(--bg-secondary); }
#comicImageViewer:active { cursor: grabbing; }

.viewer-content .loader-inline { /* Unchanged much, uses vars */
    position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: var(--bg-secondary-translucent, rgba(255, 255, 255, 0.8)); display: flex; align-items: center; justify-content: center; z-index: 5; opacity: 0; visibility: hidden; transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}
.dark-mode .viewer-content .loader-inline { background: var(--bg-primary-translucent, rgba(17, 24, 39, 0.8)); }
.viewer-content .loader-inline.active { opacity: 1; visibility: visible; transition: opacity 0.3s ease; }
.viewer-content .loader-inline .spinner { width: 40px; height: 40px; }

.viewer-close { /* Use modal close style */
    position: absolute; top: 0.8rem; right: 1rem; background: none; border: none; font-size: 1.8rem; cursor: pointer; color: rgba(255, 255, 255, 0.8); z-index: 10; padding: 0.3rem; line-height: 1; transition: color var(--transition-speed) ease, transform var(--transition-speed) ease;
}
.viewer-close:hover { color: var(--danger); transform: rotate(90deg); }

#image-load-error { /* Unchanged */
    color: var(--danger); padding: 2rem; display: none; position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); background: var(--bg-secondary); border-radius: var(--border-radius); border: 1px solid var(--danger);
}

/* --- Spinner --- */
.spinner { /* Unchanged */
    width: 50px; height: 50px; border: 5px solid var(--border-color); border-top-color: var(--primary); border-radius: 50%; animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Comic List Pagination --- */
.pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 3rem; /* More space */
    padding: 1.5rem 0;
    flex-wrap: wrap;
    gap: 0.5rem; /* Adjusted gap */
}
.pagination-container button,
.pagination-container span {
    padding: 0.6rem 1rem; /* Adjusted padding */
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--link-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease, border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1; /* Ensure consistent height */
}
.pagination-container button:hover:not(:disabled) {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}
.pagination-container button:disabled {
    color: var(--text-muted);
    background-color: var(--bg-primary); /* Subtle disabled bg */
    cursor: not-allowed;
    opacity: 0.7;
}
.pagination-container span.active-page {
    background-color: var(--primary);
    color: white;
    border-color: var(--primary);
    font-weight: 600;
    cursor: default;
    box-shadow: var(--shadow-sm);
}
.pagination-container span.ellipsis { /* Unchanged */
    border: none; background: none; padding: 8px 0; cursor: default; color: var(--text-muted);
}

/* --- Footer --- */
footer {
    background-color: var(--text-primary); /* Use text color for dark bg */
    color: var(--text-muted);
    padding: 4rem 1.5rem 2rem; /* Adjusted padding */
    margin-top: 4rem; /* More space */
    border-top: 4px solid var(--primary); /* Accent top border */
}
.dark-mode footer { background-color: var(--bg-primary); border-top-color: var(--primary); } /* Adjust footer bg in dark mode */

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); /* Adjusted minmax */
    gap: 2.5rem;
}
.footer-col h3 {
    color: var(--bg-secondary); /* Use bg color for light text */
    margin-bottom: 1.5rem;
    font-size: 1.1rem; /* Adjusted size */
    font-weight: 600;
}
.dark-mode .footer-col h3 { color: var(--text-primary); }
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: 0.8rem; }
.footer-col a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color var(--transition-speed) ease;
}
.footer-col a:hover { color: var(--bg-secondary); } /* Use bg color for light text */
.dark-mode .footer-col a:hover { color: var(--text-primary); }

.social-links { display: flex; gap: 1rem; margin-top: 1rem; }
.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05); /* More subtle */
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-speed) ease;
    font-size: 1.1rem;
}
.dark-mode .social-links a { background-color: rgba(0, 0, 0, 0.1); }
.social-links a:hover {
    background-color: var(--primary);
    color: white;
    transform: translateY(-3px);
}
.copyright {
    text-align: center;
    padding-top: 3rem; /* More space */
    margin-top: 3rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.9rem;
}
.dark-mode .copyright { border-top-color: var(--border-color); }


/* --- Media Queries --- */
@media (max-width: 768px) { /* Tablet and Mobile */
    html { font-size: 15px; } /* Adjust base */
    .container { padding: 0 1rem; }
    .header-container { flex-wrap: wrap; }
    nav { /* Mobile Nav Styling */
        position: fixed; top: 0; left: -100%; width: 85%; max-width: 320px; height: 100vh;
        background-color: var(--bg-secondary); /* Use theme bg */
        color: var(--text-primary); /* Use theme text */
        z-index: 200; transition: left 0.35s ease-in-out; padding: 6rem 2rem 2rem;
        box-shadow: 5px 0 20px rgba(0,0,0,0.1); border-right: 1px solid var(--border-color);
    }
    nav.active { left: 0; }
    nav ul { flex-direction: column; gap: 1rem; }
    nav a {
        display: block; padding: 1rem; font-size: 1.1rem; font-weight: 500;
        color: var(--text-primary); /* Theme color */
        border-radius: var(--border-radius);
    }
    nav a:hover, nav a.active { background-color: var(--border-color); } /* Theme hover */
    .dark-mode nav { background-color: var(--bg-secondary); border-right-color: var(--border-color); }
    .dark-mode nav a { color: var(--text-primary); }
    .dark-mode nav a:hover, .dark-mode nav a.active { background-color: var(--border-color); }

    .nav-actions { order: 3; width: 100%; justify-content: flex-end; margin-top: 1rem; padding: 0 1rem; }
    .search-bar { flex-grow: 1; margin-right: 0.5rem; }
    .search-bar input { width: 100%; background: var(--bg-primary); color: var(--text-primary); border: 1px solid var(--border-color); }
    .search-bar input::placeholder { color: var(--text-muted); }
    .search-bar i { color: var(--text-muted); }
    .search-bar input:focus { width: 100%; background: var(--bg-secondary); box-shadow: none; border-color: var(--primary); }
    .theme-toggle { color: var(--text-primary); } /* Theme color */

    .mobile-menu-btn { display: block; order: 2; margin-left: auto; z-index: 300; color: white; /* Keep white in header */ }
    header.nav-open .mobile-menu-btn { color: var(--text-primary); /* Change color when nav open */ }

    .logo { order: 1; }
    .hero h1 { font-size: 2.2rem; } .hero p { font-size: 1.1rem; }
    .hero-buttons { flex-direction: column; align-items: center; gap: 1rem; }
    .btn { width: 90%; max-width: 350px; text-align: center; }
    .footer-container { grid-template-columns: 1fr; text-align: center; }
    .footer-col .social-links { justify-content: center; }

    /* Image viewer adjustments from previous CSS */
    .image-viewer-modal { align-items: flex-start; background: var(--bg-primary); }
    .viewer-container { width: 100%; height: 100%; border-radius: 0; box-shadow: none; top: 0; max-width: none; border: none; }
    .viewer-header { border-radius: 0; padding: 0.6rem 1rem; }
    .viewer-title { font-size: 1rem; } .viewer-controls { gap: 0.5rem; }
    .viewer-control-btn { font-size: 1.1rem; padding: 0.3rem; }
    #imagePageInfo { font-size: 0.85rem; margin: 0 0.4rem; }
    .viewer-close { top: 0.6rem; right: 0.8rem; font-size: 1.5rem; color: white; /* Keep white */ }
    .viewer-content { padding: 0; } .image-wrapper { padding: 0; }

    .subscription-content {
        width: 95%;
        padding: 1.5rem;
    }

    .subscription-options {
        grid-template-columns: 1fr;
    }

    .subscription-plans {
        grid-template-columns: 1fr;
    }

    .profile-link,
    .login-link {
        width: 32px;
        height: 32px;
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) { /* Small Mobile */
    .comics-container { gap: 1.5rem; }
    .comic-info { padding: 1rem; }
    .comic-title { font-size: 1.1rem; }
    .comic-description { font-size: 0.9rem; }
    .comic-link { padding: 0.5rem 1rem; font-size: 0.85rem; }
    .vocab-assistant-btn { width: 35px; height: 35px; font-size: 1rem; }

    /* Image viewer adjustments from previous CSS */
    .viewer-controls { gap: 0.3rem; flex-wrap: wrap; justify-content: center; margin-top: 0.5rem; }
    .viewer-control-btn { font-size: 1rem; }
    .viewer-header { flex-direction: column; align-items: center; padding-bottom: 0.5rem; }
    .viewer-title { max-width: 95%; margin-right: 0; margin-bottom: 0.5rem; text-align: center; }
    .image-wrapper { padding: 0; }

    .pagination-container { gap: 0.3rem; }
    .pagination-container button, .pagination-container span { padding: 0.5rem 0.8rem; font-size: 0.85rem; }
}

/* --- Subscription Modal --- */
.subscription-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(17, 24, 39, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2500;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0s linear 0.3s;
}

.subscription-modal.active {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.3s ease;
}

.subscription-content {
    width: 90%;
    max-width: 800px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    position: relative;
    padding: 2rem;
    box-shadow: var(--shadow-lg);
}

.subscription-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition-speed) ease;
}

.subscription-close:hover {
    color: var(--danger);
}

.subscription-title {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    text-align: center;
}

.subscription-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.login-section, .guest-section {
    padding: 1.5rem;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-group input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.subscription-plans {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.plan {
    text-align: center;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
}

.plan h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.plan p {
    font-size: 1.25rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 1rem;
}