/* Modern Youth Blog — coral/teal aesthetic */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Lora:ital,wght@0,400;0,600;1,400&display=swap');

/* ───────── Reset & Variables ───────── */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2d3436;
    --accent-color: #ff6b6b;
    --accent-secondary: #4ecdc4;
    --bg-color: #f8f8fa;
    --card-bg: #ffffff;
    --text-color: #2d3436;
    --text-light: #a0a4a8;
    --border-color: #eeeff2;
    --success-color: #00b894;
    --danger-color: #ff6b6b;
    --radius-card: 12px;
    --radius-btn: 20px;
    --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 8px 28px rgba(0, 0, 0, 0.10);
    --transition: 0.2s ease;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ───────── Navbar ───────── */
.navbar {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
    padding: 14px 24px;
    position: sticky;
    top: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: box-shadow var(--transition);
}

.navbar .logo {
    font-size: 21px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.3px;
}

.navbar .nav-actions {
    display: flex;
    gap: 14px;
    align-items: center;
}

.navbar .nav-actions button {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: var(--text-light);
    transition: color var(--transition), transform var(--transition);
    padding: 4px;
    border-radius: 8px;
}

.navbar .nav-actions button:hover {
    color: var(--accent-color);
    transform: scale(1.1);
}

.navbar .user-avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
}

.navbar .user-avatar:hover {
    transform: scale(1.08);
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.2);
}

/* ───────── Main Layout ───────── */
.main-container {
    max-width: 920px;
    margin: 0 auto;
    padding: 28px 20px;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 28px;
}

/* ───────── Sidebar ───────── */
.sidebar {
    position: sticky;
    top: 88px;
    height: fit-content;
}

/* ───────── Profile Card ───────── */
.profile-card {
    background-color: var(--card-bg);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: box-shadow var(--transition);
}

.profile-card:hover {
    box-shadow: var(--shadow-hover);
}

.profile-cover {
    height: 90px;
    background: linear-gradient(135deg, var(--accent-color) 0%, #ff8e71 40%, var(--accent-secondary) 100%);
    position: relative;
}

.profile-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.06'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.profile-info {
    padding: 0 20px 20px;
    text-align: center;
}

.profile-avatar {
    width: 82px;
    height: 82px;
    border-radius: 50%;
    border: 4px solid var(--card-bg);
    margin-top: -41px;
    background-color: #eee;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #bbb;
    margin-left: auto;
    margin-right: auto;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.10);
    transition: transform var(--transition);
}

.profile-avatar:hover {
    transform: scale(1.05);
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-name {
    font-size: 20px;
    font-weight: 700;
    margin-top: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    letter-spacing: -0.2px;
}

.verified-badge {
    background: linear-gradient(135deg, var(--accent-color), var(--accent-secondary));
    color: white;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    font-size: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.profile-username {
    color: var(--text-light);
    font-size: 14px;
    margin-top: 2px;
    font-weight: 400;
}

.profile-bio {
    font-size: 14px;
    color: var(--text-color);
    margin-top: 12px;
    line-height: 1.6;
}

.profile-location {
    font-size: 13px;
    color: var(--text-light);
    margin-top: 8px;
}

.profile-location::before {
    content: "\1F4CD ";
}

.profile-stats {
    display: flex;
    justify-content: center;
    gap: 28px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    text-align: center;
    cursor: default;
    transition: transform var(--transition);
}

.stat-item:hover {
    transform: translateY(-1px);
}

.stat-number {
    font-weight: 700;
    font-size: 17px;
    color: var(--primary-color);
}

.stat-label {
    font-size: 11px;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.profile-actions {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.btn-message {
    width: 100%;
    padding: 11px;
    background: linear-gradient(135deg, var(--accent-color), #ff8e71);
    color: white;
    border: none;
    border-radius: var(--radius-btn);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    letter-spacing: 0.2px;
}

.btn-message:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(255, 107, 107, 0.35);
    filter: brightness(1.05);
}

.btn-message:active {
    transform: translateY(0);
}

/* ───────── Posts Container ───────── */
.posts-container {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

/* ───────── Post Card ───────── */
.post-card {
    background-color: var(--card-bg);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: transform var(--transition), box-shadow var(--transition);
}

.post-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

/* Post Header */
.post-header {
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
}

.post-header .avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: #eee;
    overflow: hidden;
    flex-shrink: 0;
    transition: transform var(--transition);
}

.post-header .avatar:hover {
    transform: scale(1.05);
}

.post-header .avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-header .info {
    flex: 1;
    min-width: 0;
}

.post-header .name {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 15px;
}

.post-header .meta {
    font-size: 13px;
    color: var(--text-light);
}

/* Post Content — serif for body text */
.post-content {
    padding: 20px;
}

.post-title {
    font-family: 'Lora', 'Georgia', serif;
    font-size: 19px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary-color);
    letter-spacing: -0.2px;
    line-height: 1.4;
}

.post-text {
    font-family: 'Lora', 'Georgia', serif;
    font-size: 15px;
    line-height: 1.8;
    color: #444;
}

.post-text p {
    margin-bottom: 12px;
}

.post-text p:last-child {
    margin-bottom: 0;
}

.post-text strong {
    color: var(--primary-color);
    font-weight: 600;
}

.post-text em {
    color: var(--text-light);
    font-style: italic;
}

/* Post Images */
.post-images {
    margin-top: 16px;
}

.post-images img {
    width: 100%;
    border-radius: 10px;
    max-height: 420px;
    object-fit: cover;
    transition: transform var(--transition);
}

.post-images img:hover {
    transform: scale(1.01);
}

.post-images .placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-secondary) 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 14px;
    font-weight: 500;
}

/* Post Stats */
.post-stats {
    padding: 12px 20px;
    display: flex;
    gap: 20px;
    font-size: 13px;
    color: var(--text-light);
    border-top: 1px solid var(--border-color);
}

/* Post Actions */
.post-actions {
    padding: 6px 12px;
    display: flex;
    border-top: 1px solid var(--border-color);
}

.post-actions button {
    flex: 1;
    padding: 10px;
    background: none;
    border: none;
    font-size: 14px;
    color: var(--text-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border-radius: 10px;
    transition: all var(--transition);
    font-weight: 500;
}

.post-actions button:hover {
    background-color: var(--bg-color);
    color: var(--text-color);
}

/* Liked heart animation */
.post-actions button.liked {
    color: var(--danger-color);
    animation: heartPop 0.35s cubic-bezier(0.17, 0.89, 0.32, 1.49);
}

@keyframes heartPop {
    0% {
        transform: scale(1);
    }
    30% {
        transform: scale(1.25);
    }
    60% {
        transform: scale(0.95);
    }
    100% {
        transform: scale(1);
    }
}

/* ───────── Comments Section ───────── */
.comments-section {
    padding: 0 20px 20px;
    border-top: 1px solid var(--border-color);
}

.comments-header {
    padding: 16px 0 12px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 12px;
}

.comment-item {
    display: flex;
    gap: 12px;
    padding: 14px 0;
    border-bottom: none;
    position: relative;
}

.comment-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 14px;
    bottom: 14px;
    width: 3px;
    border-radius: 3px;
    background: linear-gradient(180deg, var(--accent-color), var(--accent-secondary));
    opacity: 0;
    transition: opacity var(--transition);
}

.comment-item:hover::before {
    opacity: 1;
}

.comment-item:hover {
    padding-left: 14px;
}

.comment-item + .comment-item {
    border-top: 1px solid var(--border-color);
}

.comment-item:last-child {
    border-bottom: none;
}

.comment-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: #eee;
    flex-shrink: 0;
    overflow: hidden;
}

.comment-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.comment-body {
    flex: 1;
    min-width: 0;
}

.comment-username {
    font-weight: 600;
    font-size: 14px;
}

.comment-username.is-visitor {
    color: var(--accent-secondary);
}

.comment-text {
    font-size: 14px;
    margin-top: 4px;
    line-height: 1.6;
    color: #555;
}

.comment-meta {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 6px;
    display: flex;
    gap: 15px;
}

.comment-meta .like-btn {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 12px;
    transition: color var(--transition), transform var(--transition);
    padding: 0;
}

.comment-meta .like-btn:hover {
    color: var(--danger-color);
    transform: scale(1.15);
}

/* ───────── Chat Overlay ───────── */
.chat-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.chat-overlay.active {
    display: flex;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ───────── Chat Window ───────── */
.chat-window {
    width: 400px;
    max-width: 95vw;
    height: 600px;
    max-height: 90vh;
    background-color: var(--card-bg);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.18);
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.97);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.chat-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.05), rgba(78, 205, 196, 0.05));
}

.chat-header .avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: #eee;
    overflow: hidden;
    flex-shrink: 0;
}

.chat-header .avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.chat-header .info {
    flex: 1;
    min-width: 0;
}

.chat-header .name {
    font-weight: 600;
    font-size: 15px;
}

.chat-header .status {
    font-size: 12px;
    color: var(--text-light);
}

.chat-header .status.online::before {
    content: "\1F7E2 ";
}

.chat-close {
    background: none;
    border: none;
    font-size: 22px;
    color: var(--text-light);
    cursor: pointer;
    transition: color var(--transition), transform var(--transition);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.chat-close:hover {
    color: var(--accent-color);
    background-color: rgba(255, 107, 107, 0.08);
    transform: rotate(90deg);
}

/* Chat Messages */
.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    background-color: var(--bg-color);
}

.chat-messages::-webkit-scrollbar {
    width: 5px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: #d0d0d0;
    border-radius: 10px;
}

.message {
    max-width: 75%;
    padding: 12px 16px;
    border-radius: 20px;
    font-size: 14px;
    line-height: 1.5;
    animation: msgIn 0.2s ease;
}

@keyframes msgIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.sent {
    align-self: flex-end;
    background: linear-gradient(135deg, var(--accent-color), #ff8e71);
    color: white;
    border-bottom-right-radius: 6px;
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.2);
}

.message.received {
    align-self: flex-start;
    background-color: var(--card-bg);
    color: var(--text-color);
    border-bottom-left-radius: 6px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.message .time {
    font-size: 11px;
    opacity: 0.65;
    margin-top: 5px;
    display: block;
}

.message.sent .time {
    text-align: right;
}

/* Typing Indicator */
.typing-indicator {
    align-self: flex-start;
    background-color: var(--card-bg);
    padding: 12px 18px;
    border-radius: 20px;
    font-size: 14px;
    color: var(--text-light);
    display: none;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.typing-indicator.active {
    display: block;
}

.typing-indicator span {
    animation: typing 1.4s infinite;
    display: inline-block;
}

.typing-indicator span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% { opacity: 0.25; transform: translateY(0); }
    30% { opacity: 1; transform: translateY(-3px); }
}

.no-reply-notice {
    text-align: center;
    font-size: 12px;
    color: var(--text-light);
    padding: 10px 16px;
    background-color: var(--card-bg);
    border-radius: 12px;
    display: none;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}

.no-reply-notice.active {
    display: block;
}

/* Chat Input */
.chat-input-container {
    padding: 14px 18px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
    background-color: var(--card-bg);
}

.chat-input {
    flex: 1;
    padding: 12px 18px;
    border: 2px solid var(--border-color);
    border-radius: 24px;
    font-size: 14px;
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    background-color: var(--bg-color);
}

.chat-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.12);
    background-color: var(--card-bg);
}

.chat-send {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-color), #ff8e71);
    color: white;
    border: none;
    cursor: pointer;
    font-size: 18px;
    transition: all var(--transition);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-send:hover {
    transform: scale(1.08);
    box-shadow: 0 4px 14px rgba(255, 107, 107, 0.35);
}

.chat-send:active {
    transform: scale(0.95);
}

.chat-send:disabled {
    background: #d0d0d0;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

/* ───────── Responsive ───────── */
@media (max-width: 768px) {
    .main-container {
        grid-template-columns: 1fr;
        padding: 16px 12px;
        gap: 18px;
    }

    .sidebar {
        position: relative;
        top: 0;
    }

    .navbar {
        padding: 12px 16px;
    }

    .post-content {
        padding: 16px;
    }

    .post-actions {
        padding: 4px 8px;
    }

    .chat-window {
        width: 100%;
        height: 100%;
        max-height: 100vh;
        border-radius: 0;
    }

    .profile-cover {
        height: 70px;
    }

    .comment-item:hover {
        padding-left: 10px;
    }
}

@media (max-width: 480px) {
    .post-header {
        padding: 12px 16px;
    }

    .post-stats {
        padding: 10px 16px;
    }

    .comments-section {
        padding: 0 16px 16px;
    }
}

/* ───────── Chinese bilingual annotation — hidden by default ───────── */
.cn {
    display: none;
    color: #999;
    font-size: 0.85em;
    line-height: 1.6;
    margin-top: -5px;
    margin-bottom: 8px;
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
}

body.show-cn .cn {
    display: block;
}

/* ───────── Encrypted Video ───────── */
.encrypted-video {
    margin: 16px 0;
    border-radius: 12px;
    overflow: hidden;
    background: #0a0a0f;
}

.video-lock {
    padding: 40px 20px;
    text-align: center;
    color: #888;
}

.lock-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.video-lock p {
    margin: 4px 0;
    font-size: 0.9em;
}

.video-password {
    display: block;
    margin: 16px auto 8px;
    padding: 10px 16px;
    width: 220px;
    background: #1a1a2e;
    border: 1px solid #333;
    border-radius: 8px;
    color: #eee;
    font-family: 'Courier New', monospace;
    font-size: 14px;
    text-align: center;
    letter-spacing: 2px;
}

.video-password:focus {
    outline: none;
    border-color: var(--accent, #c9a96e);
}

.video-unlock-btn {
    display: inline-block;
    margin-top: 8px;
    padding: 8px 24px;
    background: var(--accent, #c9a96e);
    color: #0a0a0f;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    font-size: 13px;
    transition: opacity 0.2s;
}

.video-unlock-btn:hover {
    opacity: 0.85;
}

.video-error {
    display: none;
    color: #ff6b6b;
    font-size: 0.8em;
    margin-top: 8px;
}

.video-player video {
    display: block;
    width: 100%;
    border-radius: 0;
}

/* ───────── Avatar Placeholder ───────── */
.avatar-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-secondary) 100%);
    color: white;
    font-size: 18px;
    font-weight: bold;
}

/* ───────── Selection color ───────── */
::selection {
    background-color: rgba(255, 107, 107, 0.2);
    color: inherit;
}

/* ───────── Scrollbar (global) ───────── */
::-webkit-scrollbar {
    width: 7px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #d4d4d4;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: #bbb;
}