/* ==========================================
   Suicidaladdiction — OSINT Forum Styles
   Mobile-first, BEM, CSS Variables
   ========================================== */

/* ------------------------------------------
   Variables / Custom Properties
   ------------------------------------------ */
:root {
    --color-bg-primary: #0b0f19;
    --color-bg-secondary: #0f1520;
    --color-bg-tertiary: #151d2e;
    --color-bg-card: #111827;
    --color-bg-input: #0a0d17;
    --color-text-primary: #e5e7eb;
    --color-text-secondary: #9ca3af;
    --color-text-muted: #6b7280;
    --color-accent: #06b6d4;
    --color-accent-dim: rgba(6, 182, 212, 0.15);
    --color-accent-glow: rgba(6, 182, 212, 0.25);
    --color-accent-hover: #22d3ee;
    --color-red: #ef4444;
    --color-red-dim: rgba(239, 68, 68, 0.15);
    --color-green: #10b981;
    --color-green-dim: rgba(16, 185, 129, 0.15);
    --color-yellow: #f59e0b;
    --color-yellow-dim: rgba(245, 158, 11, 0.15);
    --color-purple: #8b5cf6;
    --color-purple-dim: rgba(139, 92, 246, 0.15);
    --color-border: #1e293b;
    --color-border-hover: #334155;
    --radius-sm: 0.5rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', 'Consolas', monospace;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.6);
    --transition: 0.2s ease;
    --max-width: 75rem;
}

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

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

body {
    font-family: var(--font-sans);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
}

img, svg {
    display: block;
    max-width: 100%;
}

/* Focus styles — accessibility */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ------------------------------------------
   Layout: Container
   ------------------------------------------ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1rem;
}

/* ------------------------------------------
   Header / Navbar
   ------------------------------------------ */
.header {
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    align-items: center;
    gap: 1rem;
    height: 4rem;
}

/* Logo */
.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    text-decoration: none;
    color: inherit;
    flex-shrink: 0;
}

.logo__icon {
    color: var(--color-accent);
    font-size: 1.5rem;
    text-shadow: 0 0 0.75rem var(--color-accent-glow);
}

.logo__text {
    font-weight: 700;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
    white-space: nowrap;
}

/* Nav */
.nav {
    display: flex;
    gap: 0.25rem;
    flex: 1;
    justify-content: center;
}

.nav__btn {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition), background var(--transition);
    font-family: inherit;
}

.nav__btn:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-tertiary);
}

.nav__btn--active {
    color: var(--color-accent);
    background: var(--color-accent-dim);
}

/* Auth block */
.auth {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.auth--hidden {
    display: none;
}

/* User menu */
.user-menu {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.user-menu--hidden {
    display: none;
}

.user-menu__name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-accent);
    white-space: nowrap;
}

/* ------------------------------------------
   Main Content
   ------------------------------------------ */
.main {
    flex: 1;
    padding: 1.5rem 0;
}

/* Sections (pages) */
.section {
    display: none;
    animation: fadeIn 0.25s ease;
}

.section--active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(0.5rem); }
    to { opacity: 1; transform: translateY(0); }
}

/* Section header */
.section__header {
    margin-bottom: 1.75rem;
}

.section__title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.section__subtitle {
    color: var(--color-text-secondary);
    font-size: 1rem;
}

/* ------------------------------------------
   Hero (Home)
   ------------------------------------------ */
.hero {
    text-align: center;
    padding: 3rem 1rem 2.5rem;
}

.hero__title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--color-accent), var(--color-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.hero__subtitle {
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    letter-spacing: 0.125rem;
    margin: 0.75rem 0 1rem;
    text-transform: uppercase;
}

.hero__desc {
    color: var(--color-text-secondary);
    font-size: 1rem;
    max-width: 40rem;
    margin: 0 auto 2rem;
}

/* Stats */
.hero__stats {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-bottom: 2rem;
}

.stat {
    text-align: center;
}

.stat__number {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-accent);
}

.stat__label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero__actions {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ------------------------------------------
   Features (Home)
   ------------------------------------------ */
.features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: border-color var(--transition), transform var(--transition);
}

.feature-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-2px);
}

.feature-card__icon {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.feature-card__title {
    font-size: 1.1rem;
    margin-bottom: 0.375rem;
}

.feature-card__text {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ------------------------------------------
   Courses (Learn)
   ------------------------------------------ */
.courses {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.course-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    transition: border-color var(--transition), box-shadow var(--transition);
    position: relative;
}

.course-card:hover {
    border-color: var(--color-border-hover);
    box-shadow: var(--shadow-md);
}

.course-card__badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.course-card__badge--beginner {
    background: var(--color-green-dim);
    color: var(--color-green);
}

.course-card__badge--intermediate {
    background: var(--color-yellow-dim);
    color: var(--color-yellow);
}

.course-card__badge--advanced {
    background: var(--color-red-dim);
    color: var(--color-red);
}

.course-card__title {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
    padding-right: 5rem;
}

.course-card__desc {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.course-card__list {
    list-style: none;
    margin-bottom: 1.25rem;
}

.course-card__list li {
    padding: 0.375rem 0;
    color: var(--color-text-muted);
    font-size: 0.85rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.course-card__list li::before {
    content: '→';
    color: var(--color-accent);
}

.course-card__list li:last-child {
    border-bottom: none;
}

/* ------------------------------------------
   Forum
   ------------------------------------------ */
.forum__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.forum__filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    padding: 0.375rem 0.875rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.85rem;
    transition: color var(--transition), border-color var(--transition), background var(--transition);
    font-family: inherit;
}

.filter-btn:hover {
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
}

.filter-btn--active {
    background: var(--color-accent-dim);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.forum {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.forum__main {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    min-height: 12.5rem;
}

/* Topic list */
.topic-list {
    display: flex;
    flex-direction: column;
}

.topic-list__empty {
    padding: 1.25rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* Individual topic */
.topic {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition);
    border-bottom: 1px solid var(--color-border);
}

.topic:last-child {
    border-bottom: none;
}

.topic:hover {
    background: var(--color-bg-tertiary);
}

.topic:focus-visible {
    background: var(--color-bg-tertiary);
    outline: none;
    box-shadow: inset 0 0 0 2px var(--color-accent);
}

.topic__icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.topic__content {
    flex: 1;
    min-width: 0;
}

.topic__title {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.topic__meta {
    display: flex;
    gap: 0.625rem;
    align-items: center;
    flex-wrap: wrap;
    font-size: 0.75rem;
}

.topic__author {
    color: var(--color-accent);
    font-family: var(--font-mono);
}

.topic__date {
    color: var(--color-text-muted);
}

.topic__stats {
    display: flex;
    gap: 0.875rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    flex-shrink: 0;
    font-family: var(--font-mono);
}

/* Badges */
.badge {
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-sm);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    display: inline-block;
}

.badge--general {
    background: var(--color-accent-dim);
    color: var(--color-accent);
}

.badge--tools {
    background: var(--color-green-dim);
    color: var(--color-green);
}

.badge--cases {
    background: var(--color-yellow-dim);
    color: var(--color-yellow);
}

.badge--help {
    background: var(--color-red-dim);
    color: var(--color-red);
}

/* Sidebar */
.forum__aside {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.sidebar-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1rem;
}

.sidebar-card__title {
    font-size: 0.8rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.sidebar-card__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-card__link {
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    transition: color var(--transition);
    text-decoration: none;
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--color-border);
    display: block;
}

.sidebar-card__link:hover {
    color: var(--color-accent);
}

.sidebar-card__list--stats li {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    padding: 0.25rem 0;
    border-bottom: 1px solid var(--color-border);
}

.sidebar-card__list--stats li:last-child {
    border-bottom: none;
}

.sidebar-card__list--stats strong {
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-weight: 600;
}

/* Topic view (inside modal) */
.topic-view {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
}

.topic-view__meta {
    display: flex;
    gap: 0.625rem;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.topic-view__author {
    color: var(--color-accent);
    font-family: var(--font-mono);
}

.topic-view__body {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    white-space: pre-wrap;
}

/* Posts / Replies */
.reply-section {
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.reply-section__title {
    font-size: 0.85rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.reply-section__empty {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    padding: 0.5rem 0;
}

.reply-form {
    margin-top: 1rem;
}

.reply-form__hint {
    margin-top: 0.75rem;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.post {
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--color-border);
}

.post:last-child {
    border-bottom: none;
}

.post__header {
    display: flex;
    gap: 0.625rem;
    align-items: center;
    margin-bottom: 0.375rem;
}

.post__avatar {
    font-size: 1.25rem;
}

.post__author {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-accent);
}

.post__date {
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

.post__body {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    white-space: pre-wrap;
}

/* ------------------------------------------
   Community / Members
   ------------------------------------------ */
.members {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.member-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1rem;
    text-align: center;
    transition: border-color var(--transition);
}

.member-card:hover {
    border-color: var(--color-border-hover);
}

.member-card__avatar {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.member-card__name {
    font-size: 0.95rem;
    margin-bottom: 0.125rem;
}

.member-card__role {
    display: block;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.member-card__posts {
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

/* ------------------------------------------
   Profile (inside modal)
   ------------------------------------------ */
.profile {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.25rem;
}

.profile__sidebar {
    text-align: center;
    padding-bottom: 1.25rem;
    border-bottom: 1px solid var(--color-border);
}

.profile__avatar {
    font-size: 3rem;
    margin-bottom: 0.75rem;
}

.profile__name {
    font-size: 1.15rem;
    margin-bottom: 0.25rem;
}

.profile__role {
    display: block;
    font-size: 0.75rem;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.profile__stats {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
}

.profile__stat {
    text-align: center;
}

.profile__stat-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--color-accent);
}

.profile__stat-label {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* ------------------------------------------
   Buttons
   ------------------------------------------ */
.btn {
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), box-shadow var(--transition), color var(--transition);
    border: 1px solid transparent;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.375rem;
    font-family: inherit;
    line-height: 1.5;
}

.btn--primary {
    background: var(--color-accent);
    color: #000;
    border-color: var(--color-accent);
}

.btn--primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    box-shadow: 0 0 1rem var(--color-accent-glow);
}

.btn--outline {
    background: transparent;
    color: var(--color-text-primary);
    border-color: var(--color-border-hover);
}

.btn--outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn--sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8rem;
}

.btn--lg {
    padding: 0.75rem 1.75rem;
    font-size: 1rem;
}

.btn--block {
    width: 100%;
    display: flex;
}

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

.form-group__label {
    display: block;
    margin-bottom: 0.375rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-group__input,
.form-group__textarea,
.form-group__select {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: var(--color-bg-input);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.9rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group__input:focus,
.form-group__textarea:focus,
.form-group__select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 0.1875rem var(--color-accent-glow);
}

.form-group__textarea {
    resize: vertical;
    min-height: 5rem;
}

.form-group__select {
    appearance: none;
    cursor: pointer;
    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='%239ca3af' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.form-error {
    color: var(--color-red);
    font-size: 0.8rem;
    margin-bottom: 0.75rem;
    min-height: 1.125rem;
}

/* ------------------------------------------
   Modals
   ------------------------------------------ */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 200;
    padding: 1rem;
    backdrop-filter: blur(2px);
}

.modal-overlay--active {
    display: flex;
}

.modal {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalIn 0.2s ease;
    box-shadow: var(--shadow-lg);
}

.modal--lg { max-width: 34.375rem; }
.modal--xl { max-width: 43.75rem; }

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--color-border);
}

.modal__title {
    font-size: 1.1rem;
}

.modal__close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    transition: color var(--transition), background var(--transition);
    line-height: 1;
    padding: 0;
}

.modal__close:hover {
    color: var(--color-text-primary);
    background: var(--color-bg-tertiary);
}

.modal__body {
    padding: 1.25rem;
}

/* ------------------------------------------
   Footer
   ------------------------------------------ */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 1rem 0;
    text-align: center;
}

.footer p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* ------------------------------------------
   Responsive — Tablet & Up
   ------------------------------------------ */
@media (min-width: 48rem) {
    .features {
        grid-template-columns: repeat(3, 1fr);
    }

    .courses {
        grid-template-columns: repeat(3, 1fr);
    }

    .forum {
        grid-template-columns: 1fr 17.5rem;
    }

    .forum__aside {
        position: sticky;
        top: 5rem;
    }

    .profile {
        grid-template-columns: 14rem 1fr;
    }

    .profile__sidebar {
        border-bottom: none;
        padding-bottom: 0;
        border-right: 1px solid var(--color-border);
        padding-right: 1.25rem;
        text-align: center;
    }

    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

@media (min-width: 64rem) {
    .hero__title {
        font-size: 3rem;
    }

    .section__title {
        font-size: 2rem;
    }
}

/* ------------------------------------------
   Reduced Motion
   ------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    body.theme-live,
    body.theme-aurora,
    body.theme-galaxy,
    body.theme-live::before,
    body.theme-aurora::before,
    body.theme-galaxy::before {
        animation: none !important;
    }
}

.avatar,
.avatar-img {
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 9999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    overflow: hidden;
    font-size: 1rem;
}

.avatar--sm { width: 1.75rem; height: 1.75rem; font-size: 0.85rem; }
.avatar--lg { width: 3rem; height: 3rem; font-size: 1.25rem; }
.avatar-img { object-fit: cover; width: 100%; height: 100%; }

.form-help {
    display: block;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    margin-top: 0.35rem;
}

.post-page {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.composer,
.feed-card,
.admin-panel,
.admin-card,
.profile-section {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1rem;
}

.composer__top {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    margin-bottom: 1rem;
}

.composer__avatar {
    font-size: 2rem;
}

.composer h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.composer p {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.feed {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.feed-card {
    transition: border-color var(--transition), transform var(--transition);
}

.feed-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-1px);
}

.feed-card__header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.feed-card__meta {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex-wrap: wrap;
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.feed-card__author {
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-weight: 600;
}

.feed-card__title {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.feed-card__body {
    color: var(--color-text-secondary);
    line-height: 1.7;
    white-space: pre-wrap;
    margin-bottom: 0.75rem;
}

.feed-card__actions,
.profile-post__actions,
.member-card__actions,
.profile__actions,
.admin-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: 0.75rem;
}

.attachments {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
    margin: 0.75rem 0;
}

.attachment {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.75rem;
    color: var(--color-text-secondary);
    text-decoration: none;
    overflow: hidden;
}

.attachment img,
.attachment video {
    width: 100%;
    border-radius: var(--radius-md);
    background: #000;
}

.attachment figcaption {
    color: var(--color-text-muted);
    font-size: 0.75rem;
    margin-top: 0.35rem;
}

.profile__subscriptions {
    color: var(--color-text-muted);
    font-size: 0.85rem;
    text-align: center;
    margin: 0.75rem 0;
}

.profile-editor--hidden {
    display: none;
}

.profile-section {
    margin-bottom: 1rem;
}

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

.profile-section__title {
    font-size: 1rem;
    margin-bottom: 0.75rem;
}

.profile-posts {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.profile-post {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.875rem;
}

.profile-post h4 {
    margin-bottom: 0.35rem;
}

.profile-post p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    white-space: pre-wrap;
}

.lesson-body {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.lesson-body h4 {
    color: var(--color-text-primary);
    margin: 1rem 0 0.5rem;
}

.lesson-body ol,
.lesson-body ul {
    padding-left: 1.25rem;
}

.admin-panel {
    display: grid;
    gap: 1rem;
}

.admin-panel__stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
}

.admin-stat {
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem;
}

.admin-stat strong {
    display: block;
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.admin-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    overflow: hidden;
    border-radius: var(--radius-md);
}

.admin-table th,
.admin-table td {
    text-align: left;
    padding: 0.75rem;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.85rem;
}

.admin-table th {
    color: var(--color-accent);
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-size: 0.7rem;
}

.admin-table tr:last-child td {
    border-bottom: none;
}

.admin-card {
    margin-bottom: 1rem;
}

.member-card__actions {
    justify-content: center;
}

.member-card__me {
    color: var(--color-green);
    font-size: 0.75rem;
}

@media (max-width: 35.99rem) {
    .header .container {
        height: auto;
        min-height: 4rem;
        padding: 0.75rem 1rem;
        flex-wrap: wrap;
    }

    .nav {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        padding-bottom: 0.25rem;
        scrollbar-width: thin;
    }

    .nav__btn {
        white-space: nowrap;
        padding: 0.45rem 0.75rem;
    }

    .hero {
        padding: 2rem 0.75rem 1.5rem;
    }

    .hero__title {
        font-size: 2rem;
    }

    .hero__stats,
    .profile__stats,
    .admin-panel__stats {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0.75rem;
    }

    .stat__number {
        font-size: 1.35rem;
    }

    .forum__header,
    .section__header,
    .market {
        gap: 0.75rem;
    }

    .forum__filters,
    .post-filters {
        width: 100%;
    }

    .filter-btn {
        flex: 1 1 auto;
    }

    .topic {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.625rem;
    }

    .topic__stats {
        width: 100%;
        justify-content: space-between;
    }

    .admin-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    .market-wallet {
        position: static;
    }
}

@media (min-width: 36rem) and (max-width: 47.99rem) {
    .header .container {
        flex-wrap: wrap;
        height: auto;
        min-height: 4rem;
        padding: 0.75rem 1rem;
    }

    .nav {
        order: 3;
        width: 100%;
        overflow-x: auto;
        justify-content: flex-start;
    }

    .nav__btn {
        white-space: nowrap;
    }

    .hero__stats,
    .admin-panel__stats {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
    }

    .features,
    .courses,
    .market-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .forum,
    .post-page,
    .market {
        grid-template-columns: 1fr;
    }

    .topic {
        align-items: flex-start;
        flex-direction: column;
    }

    .topic__stats {
        width: 100%;
        justify-content: space-between;
    }
}

@media (min-width: 48rem) and (max-width: 63.99rem) {
    .hero__stats,
    .admin-panel__stats {
        grid-template-columns: repeat(4, 1fr);
    }

    .features,
    .courses {
        grid-template-columns: repeat(2, 1fr);
    }

    .market-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .admin-table th,
    .admin-table td {
        padding: 0.625rem;
        font-size: 0.8rem;
    }
}

@media (min-width: 90rem) {
    .container {
        max-width: 86rem;
    }

    .features,
    .courses {
        grid-template-columns: repeat(3, 1fr);
    }

    .market-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 48rem) {
.post-filters {
    margin-bottom: 1rem;
}

.post-page {
        grid-template-columns: 24rem 1fr;
        align-items: start;
    }

    .composer {
        position: sticky;
        top: 5rem;
    }

    .profile {
        grid-template-columns: 14rem 1fr;
    }

    .profile__sidebar {
        border-bottom: none;
        padding-bottom: 0;
        border-right: 1px solid var(--color-border);
        padding-right: 1.25rem;
        text-align: center;
    }

    .admin-panel__stats {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 64rem) {
    .admin-table th,
    .admin-table td {
        font-size: 0.9rem;
    }
}

.market {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.market-wallet,
.market-card,
.market-orders {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1rem;
}

.market-wallet {
    position: sticky;
    top: 5rem;
}

.market-wallet h3,
.market-orders h3 {
    margin-bottom: 0.75rem;
}

.wallet-balance {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    padding: 1rem;
    border-radius: var(--radius-md);
    background: var(--color-accent-dim);
    color: var(--color-accent);
    font-family: var(--font-mono);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.market-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.market-card {
    position: relative;
    overflow: hidden;
}

.market-card__image {
    min-height: 8rem;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-accent-dim), var(--color-purple-dim));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.market-card__badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
    background: var(--color-bg-tertiary);
    color: var(--color-accent);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
}

.market-card h3 {
    margin-bottom: 0.35rem;
}

.market-card p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.market-card__price {
    color: var(--color-yellow);
    font-family: var(--font-mono);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.market-orders ul {
    list-style: none;
}

.market-orders li {
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.market-orders li:last-child {
    border-bottom: none;
}

.profile-coins {
    color: var(--color-yellow);
    font-family: var(--font-mono);
    font-weight: 700;
    margin: 0.75rem 0;
}

.rewards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.reward-card,
.profile-rewards {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1rem;
}

.reward-card--bonus {
    background: linear-gradient(135deg, var(--color-accent-dim), var(--color-purple-dim));
}

.reward-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.75rem;
}

.reward-chip,
.profile-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.625rem;
    border-radius: 9999px;
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    font-size: 0.8rem;
    margin: 0.25rem 0.25rem 0.25rem 0;
}

.profile-rewards {
    display: flex;
    flex-wrap: wrap;
}

.profile-chip--limited {
    border-color: rgba(245, 158, 11, 0.45);
    color: var(--color-yellow);
    box-shadow: 0 0 1rem rgba(245, 158, 11, 0.12);
}

.profile-chip--badge {
    border-color: rgba(6, 182, 212, 0.45);
    color: var(--color-accent);
}

.profile-chip--pass {
    border-color: rgba(139, 92, 246, 0.45);
    color: var(--color-purple);
}

.promo-input {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 0.5rem;
}

@media (min-width: 48rem) {
    .profile__avatar.frame-neon,
.member-card.frame-neon .member-card__avatar,
.feed-card__header.frame-neon .avatar {
    box-shadow: 0 0 0 2px rgba(6, 182, 212, 0.5), 0 0 1.5rem rgba(6, 182, 212, 0.75);
}

.profile__avatar.frame-gold,
.member-card.frame-gold .member-card__avatar,
.feed-card__header.frame-gold .avatar {
    box-shadow: 0 0 0 2px rgba(245, 158, 11, 0.55), 0 0 1.5rem rgba(245, 158, 11, 0.65);
}

.profile__name.glow-neon,
.feed-card__author.glow-neon,
.member-card__name.glow-neon {
    text-shadow: 0 0 0.75rem rgba(6, 182, 212, 0.9);
}

.profile__name.glow-gold,
.feed-card__author.glow-gold,
.member-card__name.glow-gold {
    text-shadow: 0 0 0.75rem rgba(245, 158, 11, 0.85);
}

body.theme-cyber {
    --color-accent: #00f5ff;
    --color-accent-hover: #7dd3fc;
    --color-purple: #ff2bd6;
    --color-bg-primary: #05030f;
    --color-bg-secondary: #09071a;
    --color-bg-card: #10102a;
}

body.theme-gold {
    --color-accent: #f6c453;
    --color-accent-hover: #ffe39b;
    --color-accent-dim: rgba(246, 196, 83, 0.16);
    --color-bg-primary: #130f07;
    --color-bg-secondary: #1b160b;
    --color-bg-card: #211b0d;
}

body.theme-forest {
    --color-accent: #34d399;
    --color-accent-hover: #6ee7b7;
    --color-accent-dim: rgba(52, 211, 153, 0.16);
    --color-bg-primary: #06120d;
    --color-bg-secondary: #0b1d16;
    --color-bg-card: #0f241b;
}

body.theme-live {
    --color-accent: #00f5ff;
    --color-accent-hover: #ff2bd6;
    --color-accent-dim: rgba(0, 245, 255, 0.14);
    --color-bg-primary: #03020a;
    --color-bg-secondary: #080616;
    --color-bg-card: #10102a;
    background:
        radial-gradient(circle at 20% 20%, rgba(0, 245, 255, 0.22), transparent 28%),
        radial-gradient(circle at 80% 10%, rgba(255, 43, 214, 0.2), transparent 30%),
        radial-gradient(circle at 50% 90%, rgba(124, 58, 237, 0.22), transparent 34%),
        linear-gradient(135deg, #03020a, #09071a 45%, #130927);
    background-size: 180% 180%;
    animation: liveBg 14s ease-in-out infinite alternate;
}

body.theme-aurora {
    --color-accent: #5eead4;
    --color-accent-hover: #a78bfa;
    --color-accent-dim: rgba(94, 234, 212, 0.16);
    --color-bg-primary: #020817;
    --color-bg-secondary: #07111f;
    --color-bg-card: #0b1730;
    background:
        linear-gradient(120deg, transparent 0 20%, rgba(45, 212, 191, 0.22) 35%, transparent 52%),
        linear-gradient(240deg, transparent 0 25%, rgba(168, 85, 247, 0.22) 42%, transparent 62%),
        radial-gradient(circle at 70% 20%, rgba(34, 197, 94, 0.18), transparent 32%),
        linear-gradient(180deg, #020817, #0f172a);
    background-size: 220% 220%;
    animation: auroraBg 18s ease-in-out infinite alternate;
}

body.theme-galaxy {
    --color-accent: #c084fc;
    --color-accent-hover: #f0abfc;
    --color-accent-dim: rgba(192, 132, 252, 0.16);
    --color-bg-primary: #050314;
    --color-bg-secondary: #0b0724;
    --color-bg-card: #11102f;
    background:
        radial-gradient(circle at 15% 20%, rgba(236, 72, 153, 0.22), transparent 24%),
        radial-gradient(circle at 75% 30%, rgba(129, 140, 248, 0.2), transparent 28%),
        radial-gradient(circle at 50% 80%, rgba(14, 165, 233, 0.18), transparent 30%),
        linear-gradient(135deg, #050314, #111827 55%, #1e1b4b);
    background-size: 200% 200%;
    animation: galaxyBg 22s ease-in-out infinite alternate;
}

@keyframes liveBg {
    from { background-position: 0% 50%; }
    to { background-position: 100% 50%; }
}

@keyframes auroraBg {
    from { background-position: 0% 30%; }
    to { background-position: 100% 70%; }
}

@keyframes galaxyBg {
    from { background-position: 0% 0%; }
    to { background-position: 100% 100%; }
}

body.theme-live::before,
body.theme-aurora::before,
body.theme-galaxy::before {
    content: '';
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.45;
    background-image:
        radial-gradient(circle, rgba(255,255,255,0.55) 1px, transparent 1.5px),
        radial-gradient(circle, rgba(255,255,255,0.35) 1px, transparent 1.5px);
    background-size: 42px 42px, 73px 73px;
    background-position: 0 0, 18px 24px;
    animation: starMove 28s linear infinite;
}

@keyframes starMove {
    from { transform: translate3d(0, 0, 0); }
    to { transform: translate3d(-80px, 80px, 0); }
}

@media (min-width: 48rem) {
    .market {
        grid-template-columns: 16rem 1fr;
    }

    .market-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .reward-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 64rem) {
    .market-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}