:root {
    --bg-color: #121212;
    --surface-color: rgba(30, 30, 30, 0.8);
    --border-color: rgba(255, 255, 255, 0.1);
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --primary-color: #404040;
    --primary-hover: #5a5a5a;
    --danger-color: #cf6679;
    --danger-hover: #b05566;
    --glass-blur: blur(12px);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --radius: 12px;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.app-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.app-header {
    margin-bottom: 3rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

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

h1 {
    font-weight: 700;
    font-size: 2rem;
    color: #ffffff;
    letter-spacing: -0.5px;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: 'Inter', sans-serif;
}

.btn.small {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

.btn.primary {
    background-color: var(--primary-color);
    color: white;
}

.btn.primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.btn.danger {
    background-color: var(--danger-color);
    color: white;
}

.btn.danger:hover {
    background-color: var(--danger-hover);
}

.btn.outline {
    background-color: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn.outline:hover:not(:disabled) {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--text-secondary);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Post List */
.post-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.post-card {
    background: var(--surface-color);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.post-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

.post-card h3 {
    margin-bottom: 0;
    font-size: 1.2rem;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    margin-right: 1.5rem;
}

.post-card .meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    flex-shrink: 0;
}

.badge {
    background: rgba(255, 255, 255, 0.1);
    color: #e0e0e0;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-weight: 500;
}

/* App Main */
.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-top: auto;
    padding-top: 2rem;
}

#page-info {
    font-weight: 600;
    color: var(--text-secondary);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform 0.3s ease;
    box-shadow: var(--shadow);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-content.small {
    max-width: 400px;
}

.modal-content.full-screen {
    width: 100%;
    max-width: 100%;
    height: 100%;
    max-height: 100vh;
    border-radius: 0;
    border: none;
    background: var(--bg-color);
    box-shadow: none;
    display: flex;
    flex-direction: column;
}

.modal-content.full-screen .app-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
    padding: 2rem;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.btn-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
}

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

.modal-body {
    padding: 1.5rem;
}

.modal-content.full-screen .modal-body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.modal-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: auto;
}

.modal-footer.split {
    justify-content: space-between;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: flex;
    gap: 1rem;
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

input[type="text"],
input[type="password"],
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    transition: var(--transition);
}

input:focus,
textarea:focus {
    outline: none;
    border-color: #888888;
    box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.1);
}

textarea {
    resize: vertical;
}

.file-input {
    color: var(--text-secondary);
}

.file-input::file-selector-button {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: rgba(255,255,255,0.05);
    color: var(--text-primary);
    cursor: pointer;
    margin-right: 1rem;
    transition: var(--transition);
}

.file-input::file-selector-button:hover {
    background: rgba(255,255,255,0.1);
}

/* Post View specifics */
.post-meta {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.post-content {
    white-space: pre-wrap;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: 2rem;
    flex: 1;
    overflow-y: auto;
}

.post-attachment {
    padding: 1rem;
    background: rgba(0,0,0,0.2);
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Loading state */
.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

/* Responsive */
@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 0;
    }
}

/* Comments */
.comments-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.comment-card {
    background: rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    padding: 1rem;
    border: 1px solid var(--border-color);
}

.comment-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.comment-meta {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.comment-actions {
    display: flex;
    gap: 0.5rem;
}

.comment-actions button {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.8rem;
}

.comment-actions button:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

.comment-content {
    font-size: 0.95rem;
    color: var(--text-primary);
    white-space: pre-wrap;
}