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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: #333;
    background: #fafafa;
}

header {
    background: #fff;
    border-bottom: 1px solid #dbdbdb;
    padding: 0.75rem 1rem;
}

header nav {
    max-width: 960px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    color: #333;
}

.nav-links a {
    margin-left: 1rem;
    text-decoration: none;
    color: #0095f6;
}

main {
    flex: 1;
    max-width: 960px;
    margin: 2rem auto;
    padding: 0 1rem;
    width: 100%;
}

footer {
    text-align: center;
    padding: 1rem;
    color: #999;
    font-size: 0.85rem;
    border-top: 1px solid #dbdbdb;
}

/* Auth pages */
.auth-page {
    max-width: 400px;
    margin: 2rem auto;
    padding: 2rem;
    background: #fff;
    border: 1px solid #dbdbdb;
    border-radius: 8px;
    text-align: center;
}

.auth-page h1 {
    margin-bottom: 1rem;
}

.auth-page > p {
    margin-top: 1rem;
    font-size: 0.9rem;
}

/* Auth forms */
.auth-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    text-align: left;
}

.auth-form label {
    font-weight: 600;
    margin-top: 0.5rem;
}

.auth-form input {
    padding: 0.5rem;
    border: 1px solid #dbdbdb;
    border-radius: 4px;
    font-size: 1rem;
}

.auth-form button {
    margin-top: 0.75rem;
    padding: 0.6rem;
    background: #0095f6;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
}

.auth-form button:hover {
    background: #007ad9;
}

/* Flash messages */
.flash {
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.flash-error {
    background: #fdecea;
    color: #b71c1c;
    border: 1px solid #f5c6cb;
}

.flash-success {
    background: #e8f5e9;
    color: #1b5e20;
    border: 1px solid #c8e6c9;
}

/* Profile page */
.profile-page {
    max-width: 500px;
    margin: 0 auto;
}

.profile-page h1 {
    margin-bottom: 1.5rem;
}

.profile-section {
    background: #fff;
    border: 1px solid #dbdbdb;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.profile-section h2 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.profile-form {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.profile-form label {
    font-weight: 600;
    margin-top: 0.25rem;
}

.profile-form input[type="text"],
.profile-form input[type="email"],
.profile-form input[type="password"] {
    padding: 0.5rem;
    border: 1px solid #dbdbdb;
    border-radius: 4px;
    font-size: 1rem;
}

.profile-form button {
    margin-top: 0.5rem;
    padding: 0.6rem;
    background: #0095f6;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
}

.profile-form button:hover {
    background: #007ad9;
}

.hint {
    color: #999;
    font-size: 0.85rem;
    margin-bottom: 0.5rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: normal !important;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
}

/* Gallery page */
.gallery-page {
    max-width: 600px;
    margin: 0 auto;
}

.gallery-page h1 {
    margin-bottom: 1.5rem;
}

.gallery-feed {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.gallery-post {
    background: #fff;
    border: 1px solid #dbdbdb;
    border-radius: 8px;
    overflow: hidden;
}

.post-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1rem;
}

.post-header time {
    color: #999;
    font-size: 0.85rem;
}

.gallery-post img {
    width: 100%;
    display: block;
}

.post-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
}

.like-form {
    display: inline;
}

.like-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #999;
    padding: 0;
    line-height: 1;
}

.like-btn.liked {
    color: #e74c3c;
}

.like-count {
    font-size: 0.9rem;
    color: #666;
}

.comments-section {
    padding: 0 1rem 0.75rem;
}

.comments-list {
    margin-bottom: 0.5rem;
}

.comment {
    font-size: 0.9rem;
    padding: 0.2rem 0;
}

.comment strong {
    margin-right: 0.3rem;
}

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

.comment-form input[type="text"] {
    flex: 1;
    padding: 0.4rem 0.5rem;
    border: 1px solid #dbdbdb;
    border-radius: 4px;
    font-size: 0.9rem;
}

.comment-form button {
    padding: 0.4rem 0.75rem;
    background: none;
    border: none;
    color: #0095f6;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.9rem;
}

.comment-form button:hover {
    color: #007ad9;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin: 1.5rem 0;
}

.pagination a {
    padding: 0.4rem 0.75rem;
    border: 1px solid #dbdbdb;
    border-radius: 4px;
    text-decoration: none;
    color: #0095f6;
}

.pagination a:hover {
    background: #f0f0f0;
}

.pagination .current-page {
    padding: 0.4rem 0.75rem;
    background: #0095f6;
    color: #fff;
    border-radius: 4px;
}

/* Editor page */
.editor-page {
    max-width: 960px;
    margin: 0 auto;
}

.editor-page h1 {
    margin-bottom: 1.5rem;
}

.editor-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    align-items: start;
}

.editor-source,
.editor-preview {
    background: #fff;
    border: 1px solid #dbdbdb;
    border-radius: 8px;
    padding: 1rem;
}

.source-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tab {
    flex: 1;
    padding: 0.5rem;
    background: #fafafa;
    border: 1px solid #dbdbdb;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.95rem;
}

.tab.active {
    background: #0095f6;
    color: #fff;
    border-color: #0095f6;
}

#webcam-video {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 4px;
    background: #000;
}

#preview-canvas {
    width: 100%;
    height: auto;
    border-radius: 4px;
    border: 1px solid #dbdbdb;
}

.overlay-controls {
    margin: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.overlay-controls input[type="range"] {
    flex: 1;
}

.editor-preview h2 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.overlay-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.overlay-thumb {
    width: 100%;
    aspect-ratio: 1;
    object-fit: contain;
    border: 2px solid #dbdbdb;
    border-radius: 4px;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.15s, border-color 0.15s;
    background: #fafafa;
    padding: 4px;
}

.overlay-thumb:hover {
    opacity: 0.8;
}

.overlay-thumb.selected {
    opacity: 1;
    border-color: #0095f6;
}

.btn {
    width: 100%;
    padding: 0.6rem;
    background: #0095f6;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    margin-top: 0.5rem;
}

.btn:hover {
    background: #007ad9;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#file-input {
    width: 100%;
    margin-top: 0.5rem;
}

.my-posts-title {
    margin-top: 2rem;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.my-posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
}

.my-post {
    background: #fff;
    border: 1px solid #dbdbdb;
    border-radius: 8px;
    overflow: hidden;
}

.my-post img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    display: block;
}

.delete-form {
    padding: 0.5rem;
}

.btn-delete {
    width: 100%;
    padding: 0.4rem;
    background: #fff;
    color: #b71c1c;
    border: 1px solid #b71c1c;
    border-radius: 4px;
    font-size: 0.85rem;
    cursor: pointer;
}

.btn-delete:hover {
    background: #fdecea;
}

@media (max-width: 600px) {
    header nav {
        flex-direction: column;
        gap: 0.5rem;
    }
    .editor-layout {
        grid-template-columns: 1fr;
    }
}