/* Variables for a modern, glassy, premium feel */
:root {
    --primary-accent: #00f2fe; /* Electric Cyan */
    --secondary-accent: #4facfe; /* Sky Blue */
    --text-color: #e0f7fa; /* Light Aqua */
    --dark-text-color: #0e1a2a; /* Deep Background color for contrast */
    --light-text-color: #a7c1d7; /* Muted Blue-Gray for meta info */
    --card-glass-bg: rgba(2, 28, 48, 0.4); /* Transparent dark blue for glass effect */
    --card-hover-bg: rgba(79, 172, 254, 0.1); /* Lighter transparent blue on hover */
    --border-glass: rgba(79, 172, 254, 0.2); /* Subtle transparent blue border */
    --glow-shadow: 0 0 20px rgba(0, 242, 254, 0.2); /* Subtle cyan glow */
    --soft-shadow: 0 5px 15px rgba(0, 0, 0, 0.3); /* General soft shadow */

    --font-heading: 'Exo 2', sans-serif;
    --font-body: 'Roboto', sans-serif;
    --border-radius-lg: 15px; /* Larger border-radius for modern feel */
    --border-radius-sm: 8px; /* Smaller for buttons/inputs */
    --spacing-unit: 1.5rem;
}

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

html {
    scroll-behavior: smooth; /* Smooth scrolling for hash links */
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-color);
    background-color: #0e1a2a; /* Fallback solid color */
    background-image: var(--background-gradient); /* Dynamic background from PHP/JS if you apply it later */
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden; /* Prevent horizontal scroll */
}

/* Dynamic background for body (applied via JS or inline style) */
body.dynamic-bg {
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    transition: background-image 1s ease-in-out;
}


.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-unit);
}

a {
    color: var(--primary-accent);
    text-decoration: none;
    transition: color 0.3s ease, transform 0.2s ease;
}

a:hover {
    color: var(--secondary-accent);
    transform: translateY(-2px);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--primary-accent);
    margin-bottom: 0.8rem;
    text-shadow: 0 0 8px rgba(0, 242, 254, 0.15); /* Subtle glow on headings */
}

h1 { font-size: 3.2rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.9rem; }

/* Header - Floating Glass Effect */
header {
    background: rgba(2, 28, 48, 0.6); /* Slightly more opaque glass */
    backdrop-filter: blur(15px); /* Stronger blur */
    padding: 1rem 0;
    box-shadow: var(--soft-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-glass);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.header-forum-name {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    color: var(--primary-accent);
    text-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
    text-decoration: none;
    transition: color 0.3s ease;
}

.header-forum-name:hover {
    color: var(--secondary-accent);
}

header nav {
    display: flex;
    gap: 1.5rem;
}

header nav a {
    font-weight: 500;
    color: var(--text-color);
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius-sm);
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
    border: 1px solid transparent;
}

header nav a:hover {
    background-color: var(--primary-accent);
    color: var(--dark-text-color);
    transform: translateY(-2px);
    border-color: var(--primary-accent);
}

/* Hero Banner - Atmospheric */
.hero-banner {
    color: var(--text-color);
    padding: 6rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: fadeIn 1s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-overlay {
    background: rgba(0, 0, 0, 0.5); /* Darker overlay for text readability */
    padding: 2.5rem;
    border-radius: var(--border-radius-lg);
    display: inline-block;
    max-width: 90%;
    margin: 0 auto;
    border: 1px solid var(--border-glass);
    box-shadow: var(--glow-shadow), var(--soft-shadow);
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 1.2rem;
    color: var(--primary-accent);
    text-shadow: 0 0 25px rgba(0, 242, 254, 0.6);
}

.hero-login-info {
    font-size: 1.5rem;
    color: var(--light-text-color);
}

.hero-login-info a {
    color: var(--secondary-accent);
    font-weight: 600;
    text-decoration: underline;
}

.hero-login-info a:hover {
    color: var(--primary-accent);
}

/* Main Grid Layout */
.main-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-unit);
    padding: var(--spacing-unit) 0;
    flex-grow: 1;
}

@media (min-width: 1024px) {
    .main-grid {
        grid-template-columns: 2.5fr 1.5fr;
    }
}

/* Common Section Styling - Glass Effect */
.forum-section {
    background: var(--card-glass-bg);
    backdrop-filter: blur(10px); /* Glassy blur */
    border-radius: var(--border-radius-lg);
    box-shadow: var(--soft-shadow), var(--glow-shadow);
    padding: var(--spacing-unit);
    border: 1px solid var(--border-glass);
    margin-bottom: var(--spacing-unit);
    transition: all 0.3s ease;
}

.forum-section:last-child {
    margin-bottom: 0;
}

.section-header {
    color: var(--primary-accent);
    margin-bottom: var(--spacing-unit);
    padding-bottom: 0.8rem;
    border-bottom: 2px solid var(--border-glass);
    text-align: center;
    font-size: 2rem;
    letter-spacing: 0.5px;
}

/* Main Forum Categories */
.main-categories .category-item {
    margin-bottom: 2.5rem;
    background: rgba(2, 28, 48, 0.5); /* Slightly darker glass for categories */
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-unit);
    box-shadow: var(--soft-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.main-categories .category-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--glow-shadow), var(--soft-shadow);
}

.main-categories .category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 0.8rem;
    border-bottom: 1px solid var(--border-glass);
}

.main-categories .category-header h3 {
    margin: 0;
    color: var(--secondary-accent);
    font-size: 1.8rem;
}

.main-categories .category-description {
    color: var(--light-text-color);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.main-categories .thread-list {
    list-style: none;
    padding: 0;
}

.main-categories .thread-item {
    display: flex;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px dashed var(--border-glass);
    transition: background-color 0.2s ease;
}

.main-categories .thread-item:last-child {
    border-bottom: none;
}

.main-categories .thread-item:hover {
    background-color: var(--card-hover-bg);
    border-radius: var(--border-radius-sm);
}

.main-categories .thread-icon {
    font-size: 1.8rem;
    color: var(--primary-accent);
    margin-right: 1rem;
    flex-shrink: 0;
}

.main-categories .thread-details {
    flex-grow: 1;
}

.main-categories .thread-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.3rem;
    display: block;
}

.main-categories .thread-title:hover {
    color: var(--primary-accent);
}

.main-categories .thread-meta {
    font-size: 0.85rem;
    color: var(--light-text-color);
}

.main-categories .thread-stats {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    flex-shrink: 0;
    margin-left: 1.5rem;
    text-align: right;
    font-size: 0.9rem;
    color: var(--light-text-color);
}

.main-categories .thread-stats span {
    margin-bottom: 0.2rem;
}

.main-categories .thread-stats strong {
    color: var(--primary-accent);
}


/* Latest Posts Grid */
.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-unit);
}

.forum-post-item {
    background: rgba(2, 28, 48, 0.5); /* Slightly darker glass for posts */
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-glass);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--soft-shadow);
    padding: var(--spacing-unit);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.forum-post-item:hover {
    transform: translateY(-7px);
    box-shadow: var(--glow-shadow), var(--soft-shadow);
    background: var(--card-hover-bg); /* Lighter on hover */
}

.post-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px dashed var(--border-glass);
}

.user-avatar {
    width: 60px; /* Slightly larger avatars */
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-accent); /* Thicker border */
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.3); /* Avatar glow */
    flex-shrink: 0;
}

.post-meta {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.post-username {
    font-weight: 600;
    color: var(--primary-accent);
    font-size: 1.2rem;
}

.post-date {
    font-size: 0.9rem;
    color: var(--light-text-color);
}

.post-content {
    margin-bottom: 1.2rem;
    word-wrap: break-word;
}

.post-text {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.post-media {
    margin-top: 1rem;
}

.post-media-image,
.post-media-video {
    max-width: 100%;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--soft-shadow);
    border: 1px solid var(--border-glass);
}

.post-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1.2rem;
    border-top: 1px solid var(--border-glass);
    margin-top: auto;
    flex-wrap: wrap;
    gap: 1rem;
}

.vote-controls {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.vote-form {
    display: flex;
    align-items: center;
}

.vote-button {
    background: var(--card-glass-bg);
    border: 1px solid var(--border-glass);
    font-size: 1.3rem;
    cursor: pointer;
    color: var(--light-text-color);
    transition: color 0.3s ease, transform 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
    padding: 0.6rem 1rem;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.vote-button .emoji {
    font-size: 1.2rem;
}

.vote-button:hover:not(:disabled) {
    color: var(--primary-accent);
    transform: scale(1.1) translateY(-2px);
    background-color: var(--card-hover-bg);
    border-color: var(--primary-accent);
}

.vote-button.upvoted {
    color: #00e676; /* Bright Green */
    border-color: #00e676;
}

.vote-button.downvoted {
    color: #ff5252; /* Bright Red */
    border-color: #ff5252;
}

.vote-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background: rgba(2, 28, 48, 0.2);
}

.post-actions-links a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--secondary-accent);
    margin-left: 1rem;
    padding: 0.6rem 1.2rem;
    border: 1px solid var(--secondary-accent);
    border-radius: var(--border-radius-sm);
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease, border-color 0.3s ease;
}

.post-actions-links a:hover {
    background-color: var(--secondary-accent);
    color: var(--dark-text-color);
    transform: translateY(-2px);
    border-color: var(--primary-accent);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: var(--spacing-unit);
    gap: 0.8rem;
}

.pagination a {
    display: inline-block;
    padding: 0.8rem 1.3rem;
    border: 1px solid var(--primary-accent);
    border-radius: var(--border-radius-sm);
    color: var(--primary-accent);
    font-weight: 600;
    transition: background-color 0.3s ease, color 0.3s ease, transform 0.2s ease, border-color 0.3s ease;
    background: rgba(2, 28, 48, 0.2);
    backdrop-filter: blur(5px);
}

.pagination a:hover,
.pagination a.active {
    background-color: var(--primary-accent);
    color: var(--dark-text-color);
    transform: translateY(-3px);
    border-color: var(--secondary-accent);
    box-shadow: var(--glow-shadow);
}

/* Sidebar Specifics */
.sidebar .forum-section {
    padding: 1.8rem;
}

.sidebar .section-header {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.8rem;
}

.widget-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.widget-list li {
    padding: 0.7rem 0;
    border-bottom: 1px dashed var(--border-glass);
}

.widget-list li:last-child {
    border-bottom: none;
}

.widget-list a {
    color: var(--text-color);
    font-weight: 400; /* Lighter weight for list items */
    display: block;
    transition: color 0.3s ease;
}

.widget-list a:hover {
    color: var(--primary-accent);
}

/* Recent Activity specific styling */
.activity-feed-wrapper {
    max-height: 450px; /* Increased height */
    overflow-y: auto;
    padding-right: 10px; /* Space for scrollbar */
}

/* Scrollbar styles for webkit browsers */
.activity-feed-wrapper::-webkit-scrollbar {
    width: 10px;
}
.activity-feed-wrapper::-webkit-scrollbar-track {
    background: var(--card-glass-bg);
    border-radius: 10px;
}
.activity-feed-wrapper::-webkit-scrollbar-thumb {
    background: var(--primary-accent);
    border-radius: 10px;
    border: 2px solid var(--card-glass-bg);
}
.activity-feed-wrapper::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-accent);
}


.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: rgba(79, 172, 254, 0.1); /* Subtle background for individual items */
    border-left: 5px solid var(--secondary-accent); /* Stronger left border */
    padding: 1rem;
    border-radius: var(--border-radius-sm);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    transition: background-color 0.3s ease;
}

.activity-item:hover {
    background: rgba(79, 172, 254, 0.2);
}

.activity-user-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-accent);
    flex-shrink: 0;
}

.activity-details {
    display: flex;
    flex-direction: column;
    font-size: 0.95rem;
}

.activity-username {
    font-weight: 600;
    color: var(--primary-accent);
    margin-bottom: 0.3rem;
}

.activity-description {
    color: var(--text-color);
    font-style: normal; /* Remove italic */
    margin-bottom: 0.3rem;
}

.activity-time {
    font-size: 0.85rem;
    color: var(--light-text-color);
}

/* Latest Threads in Sidebar */
.thread-meta {
    font-size: 0.85rem;
    color: var(--light-text-color);
    margin-top: 0.3rem;
}

/* Event Items */
.event-item {
    display: flex;
    flex-direction: column;
    padding: 0.8rem 0;
    border-bottom: 1px dashed var(--border-glass);
}
.event-item:last-child {
    border-bottom: none;
}
.event-item strong {
    color: var(--primary-accent);
    font-size: 1.1rem;
    margin-bottom: 0.4rem;
}
.event-item span {
    font-size: 0.95rem;
    color: var(--light-text-color);
    margin-bottom: 0.2rem;
}
.event-description {
    font-size: 0.9em;
    color: var(--text-color);
    margin-top: 5px;
    margin-bottom: 0.5rem;
}
.event-details-link {
    font-size: 0.9em;
    color: var(--secondary-accent);
    margin-top: 0.5rem;
    align-self: flex-start;
    font-weight: 500;
}
.event-details-link:hover {
    text-decoration: underline;
    color: var(--primary-accent);
}

/* Forum and Site Statistics */
.stats-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.stats-list li span {
    font-weight: 400;
    color: var(--text-color);
}
.stats-list li strong {
    color: var(--primary-accent);
    font-weight: 600;
    font-size: 1.1rem;
    text-shadow: 0 0 5px rgba(0, 242, 254, 0.1);
}


/* Footer */
footer {
    background: rgba(0, 0, 0, 0.4); /* Transparent dark background for footer */
    backdrop-filter: blur(8px);
    color: var(--light-text-color);
    padding: 2.5rem 0;
    margin-top: 3rem;
    text-align: center;
    box-shadow: 0 -5px 20px rgba(0,0,0,0.3);
    border-top: 1px solid var(--border-glass);
}

.footer-links a {
    color: var(--secondary-accent);
    margin: 0 1.2rem;
    font-size: 1rem;
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--primary-accent);
}

/* Empty State Messages */
.empty-state {
    padding: 1.5rem;
    background: rgba(79, 172, 254, 0.1);
    color: var(--primary-accent);
    border: 1px dashed var(--secondary-accent);
    border-radius: var(--border-radius-sm);
    text-align: center;
    font-weight: 500;
    font-style: italic;
    margin-top: 1rem;
}


/* Responsive Adjustments */
@media (max-width: 1023px) { /* Adjust breakpoint to match main-grid */
    .hero-banner {
        padding: 4rem 0;
    }
    .hero-title {
        font-size: 3rem;
    }
    .hero-login-info {
        font-size: 1.3rem;
    }
    .main-grid {
        grid-template-columns: 1fr; /* Stack main content and sidebar */
        padding: 1rem 0;
    }
    .main-categories .category-item {
        padding: 1.5rem;
    }
    .main-categories .thread-item {
        flex-wrap: wrap; /* Allow thread details to wrap */
    }
    .main-categories .thread-stats {
        margin-left: 0;
        margin-top: 0.5rem;
        flex-direction: row;
        gap: 1rem;
        width: 100%;
        justify-content: flex-end;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .header-forum-name {
        font-size: 2rem;
    }

    header nav {
        flex-direction: column;
        gap: 0.8rem;
        width: 100%;
    }

    header nav a {
        width: 100%;
        text-align: center;
    }

    .hero-title {
        font-size: 2.5rem;
    }
    .hero-login-info {
        font-size: 1.1rem;
    }

    .forum-section {
        padding: 1.5rem;
        margin-bottom: 2rem;
    }

    .section-header {
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }

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

    .forum-post-item {
        padding: 1.2rem;
    }

    .post-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.8rem;
    }

    .vote-controls {
        width: 100%;
        justify-content: flex-start;
    }
    .post-actions-links {
        width: 100%;
        display: flex;
        justify-content: space-around;
        margin-left: 0;
    }
    .post-actions-links a {
        margin: 0 0.5rem;
        padding: 0.6rem 1rem;
    }

    .main-categories .category-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .main-categories .category-header h3 {
        margin-bottom: 0.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.8rem;
    }

    header {
        padding: 0.8rem 0;
    }

    .header-forum-name {
        font-size: 1.8rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-login-info {
        font-size: 1rem;
    }

    .forum-section {
        padding: 1rem;
    }

    .section-header {
        font-size: 1.6rem;
    }

    .user-avatar {
        width: 40px;
        height: 40px;
    }

    .post-username {
        font-size: 1.1rem;
    }

    .post-date {
        font-size: 0.8rem;
    }

    .post-actions-links a {
        font-size: 0.85rem;
        padding: 0.5rem 0.8rem;
    }

    footer {
        padding: 1.8rem 0;
    }

    .footer-links a {
        margin: 0 0.6rem;
        font-size: 0.9rem;
    }
}