/* assets/css/style.css */

/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #0b0f1a;
    --bg-secondary: #111827;
    --bg-card: #1a2332;
    --bg-input: #0d1520;
    --bg-hover: #1f2a3d;
    --border-color: #2a3a5c;
    --border-light: #1e2d42;
    --text-primary: #e8edf5;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-cyan: #06b6d4;
    --success: #22c55e;
    --danger: #ef4444;
    --warning: #f59e0b;
    --shadow: 0 4px 30px rgba(0,0,0,0.4);
    --radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-secondary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent-blue); }

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Header ===== */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo a {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 24px;
    font-weight: 800;
}
.logo-icon {
    color: var(--accent-blue);
    font-size: 28px;
}
.logo-text {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.logo-slogan {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 400;
    -webkit-text-fill-color: var(--text-muted);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

/* ===== User Menu ===== */
.user-menu {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    padding: 6px 12px 6px 6px;
    border-radius: 50px;
    border: 1px solid var(--border-color);
}
.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    color: white;
}
.user-info .user-name {
    font-weight: 600;
    font-size: 14px;
}
.user-role {
    font-size: 10px;
    text-transform: uppercase;
    padding: 2px 8px;
    border-radius: 10px;
    background: var(--border-color);
    color: var(--text-secondary);
}
.user-role.admin {
    background: var(--danger);
    color: white;
}
.user-role.moderator {
    background: var(--warning);
    color: var(--bg-primary);
}

/* ===== Buttons ===== */
.btn {
    padding: 8px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    white-space: nowrap;
}
.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
}
.btn-block {
    width: 100%;
    justify-content: center;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}
.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--accent-blue);
}
.btn-success {
    background: var(--success);
    color: white;
}
.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(34, 197, 94, 0.3);
}
.btn-danger {
    background: var(--danger);
    color: white;
}
.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.3);
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ===== Stats Bar ===== */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.stat-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 15px;
    transition: var(--transition);
}
.stat-item:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}
.stat-icon {
    font-size: 28px;
}
.stat-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}
.stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* ===== Auth Forms ===== */
.auth-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.auth-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
}
.auth-box h2 {
    text-align: center;
    margin-bottom: 25px;
    color: var(--accent-blue);
}

/* ===== Form Elements ===== */
.form-group {
    margin-bottom: 16px;
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
    font-family: inherit;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}
.form-group textarea {
    resize: vertical;
    min-height: 100px;
}
.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
}
.form-error {
    color: var(--danger);
    font-size: 13px;
    margin-top: 6px;
    display: none;
}
.form-error.show {
    display: block;
}

/* ===== Create Topic ===== */
.create-topic-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
    margin-bottom: 30px;
}
.create-topic-box h2 {
    margin-bottom: 20px;
    color: var(--accent-blue);
}

/* ===== Forum Grid ===== */
.forum-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.category-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}
.category-card:hover {
    border-color: var(--accent-blue);
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-light);
    flex-wrap: wrap;
    gap: 10px;
}
.category-info {
    display: flex;
    align-items: center;
    gap: 14px;
}
.category-icon {
    font-size: 28px;
}
.category-name {
    font-size: 18px;
    font-weight: 600;
}
.category-desc {
    font-size: 13px;
    color: var(--text-muted);
}
.category-stats {
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: var(--text-secondary);
}

.category-topics {
    padding: 0;
}

.loading-topics {
    padding: 30px;
    text-align: center;
    color: var(--text-muted);
}

/* ===== Topics List ===== */
.topic-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 24px;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: var(--transition);
}
.topic-item:hover {
    background: var(--bg-hover);
}
.topic-item:last-child {
    border-bottom: none;
}
.topic-item .topic-info {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}
.topic-item .topic-status {
    font-size: 16px;
}
.topic-item .topic-title {
    color: var(--accent-blue);
    font-weight: 500;
    transition: var(--transition);
}
.topic-item .topic-title:hover {
    color: var(--accent-purple);
}
.topic-item .topic-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    flex-wrap: wrap;
}
.topic-item .topic-meta .author {
    color: var(--accent-cyan);
}

.empty-topics {
    padding: 40px 24px;
    text-align: center;
    color: var(--text-muted);
}
.empty-topics .icon {
    font-size: 40px;
    display: block;
    margin-bottom: 10px;
}

/* ===== Latest Topics ===== */
.latest-topics {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 30px;
}
.section-title {
    font-size: 20px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.topics-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.topic-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: var(--transition);
}
.topic-row:hover {
    background: var(--bg-hover);
}
.topic-row:last-child {
    border-bottom: none;
}
.topic-row .topic-info {
    display: flex;
    align-items: center;
    gap: 12px;
}
.topic-row .topic-status {
    font-size: 16px;
}
.topic-row .topic-title {
    color: var(--text-primary);
    font-weight: 500;
}
.topic-row .topic-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 12px;
    color: var(--text-muted);
}
.topic-row .topic-category {
    color: var(--accent-blue);
    background: var(--bg-card);
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
}

/* ===== Posts View ===== */
.posts-view {
    display: none;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 24px;
    margin-top: 20px;
}

.posts-view.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

.posts-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}
.posts-header h2 {
    color: var(--accent-blue);
    font-size: 22px;
}

.post-item {
    background: var(--bg-card);
    border-radius: 8px;
    padding: 18px 20px;
    margin-bottom: 14px;
    border-left: 3px solid var(--accent-blue);
}
.post-item:last-child {
    margin-bottom: 0;
}
.post-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--text-secondary);
    flex-wrap: wrap;
    gap: 5px;
}
.post-author {
    font-weight: 600;
    color: var(--accent-blue);
}
.post-author.admin {
    color: var(--danger);
}
.post-author.moderator {
    color: var(--warning);
}
.post-author .badge {
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 10px;
    text-transform: uppercase;
    margin-left: 6px;
}
.post-author .badge.admin {
    background: var(--danger);
    color: white;
}
.post-author .badge.moderator {
    background: var(--warning);
    color: var(--bg-primary);
}
.post-content {
    line-height: 1.8;
    white-space: pre-wrap;
    word-wrap: break-word;
}
.post-actions {
    margin-top: 12px;
    display: flex;
    gap: 8px;
}
.post-actions .btn {
    padding: 4px 12px;
    font-size: 12px;
}

/* ===== Reply Form ===== */
.reply-form {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}
.reply-form h3 {
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 17px;
}
.reply-form textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    min-height: 100px;
    resize: vertical;
    font-family: inherit;
    transition: var(--transition);
}
.reply-form textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
    margin-top: 30px;
}

/* ===== Toast ===== */
.toast-container {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 380px;
    width: 100%;
}
.toast {
    padding: 14px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 600;
    font-size: 14px;
    animation: slideIn 0.4s ease;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 10px;
}
.toast.success { background: var(--success); }
.toast.error { background: var(--danger); }
.toast.info { background: var(--accent-blue); }
.toast.hide {
    animation: slideOut 0.3s ease forwards;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}
@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .auth-wrapper {
        grid-template-columns: 1fr;
    }
    .stats-bar {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .header-inner {
        flex-direction: column;
        align-items: stretch;
    }
    .header-actions {
        justify-content: center;
    }
    .header-actions .btn {
        flex: 1;
        justify-content: center;
    }
    .stats-bar {
        grid-template-columns: 1fr 1fr;
    }
    .category-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .category-stats {
        width: 100%;
        justify-content: flex-start;
        font-size: 12px;
    }
    .topic-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .topic-item .topic-meta {
        font-size: 12px;
        gap: 10px;
    }
    .topic-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
    }
    .topic-row .topic-meta {
        flex-wrap: wrap;
        gap: 8px;
    }
    .posts-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .auth-box {
        padding: 20px;
    }
    .create-topic-box {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 12px;
    }
    .stats-bar {
        grid-template-columns: 1fr;
    }
    .logo a {
        font-size: 20px;
    }
    .logo-slogan {
        display: none;
    }
    .header-actions .btn {
        font-size: 12px;
        padding: 6px 14px;
    }
    .user-menu {
        padding: 4px 8px 4px 4px;
    }
    .user-avatar {
        width: 28px;
        height: 28px;
        font-size: 12px;
    }
    .user-info .user-name {
        font-size: 12px;
    }
    .category-header {
        padding: 14px 16px;
    }
    .topic-item {
        padding: 12px 16px;
    }
    .topic-item .topic-title {
        font-size: 14px;
    }
    .posts-view {
        padding: 16px;
    }
    .post-item {
        padding: 14px 16px;
    }
}