* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background: linear-gradient(145deg, #0f0f1e 0%, #1a1a2f 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: #e0e0f0;
    padding: 1.5rem 2rem;
}

header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    background: rgba(20, 20, 40, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(100, 150, 255, 0.15);
    border-radius: 3rem;
    padding: 0.9rem 2rem;
    box-shadow: 0 20px 35px -10px rgba(0, 0, 0, 0.7);
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(130deg, #a5d8ff, #c0b9ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    cursor: pointer;
    transition: 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    font-size: 2rem;
    color: #6c8cff;
    background: rgba(255,255,255,0.05);
    padding: 0.5rem;
    border-radius: 50%;
}

.logo:hover {
    transform: scale(1.02);
    text-shadow: 0 0 12px #6d8cff;
}

.filter-bar {
    flex: 1 1 300px;
    display: flex;
    align-items: center;
    background: rgba(10, 10, 25, 0.7);
    border-radius: 3rem;
    padding: 0.3rem 1.2rem;
    border: 1px solid rgba(200, 200, 255, 0.15);
    transition: 0.2s;
}

.filter-bar:focus-within {
    border-color: #5f7cff;
    box-shadow: 0 0 0 3px rgba(95, 124, 255, 0.3);
}

.filter-bar i {
    color: #8a9cf0;
    margin-right: 0.8rem;
    font-size: 1.1rem;
}

.filter-bar input {
    background: transparent;
    border: none;
    width: 100%;
    padding: 0.8rem 0;
    font-size: 1rem;
    color: #f0f0ff;
    outline: none;
}

.filter-bar input::placeholder {
    color: #7f85b5;
    font-style: italic;
    letter-spacing: 0.3px;
}

#main-content {
    flex: 1;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    0% { opacity: 0.3; transform: translateY(8px); }
    100% { opacity: 1; transform: translateY(0); }
}

.post-card, .profile-card, .comment-item, .user-info-card {
    background: rgba(25, 25, 45, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(130, 160, 250, 0.2);
    border-radius: 2rem;
    padding: 1.5rem 1.8rem;
    transition: all 0.25s;
    box-shadow: 0 15px 30px -15px #00000080;
}

.post-card {
    cursor: pointer;
    margin-bottom: 1.8rem;
    border-left: 4px solid transparent;
    background: linear-gradient(145deg, rgba(28, 28, 50, 0.7), rgba(20, 20, 40, 0.8));
}

.post-card:hover {
    border-left-color: #6d8cff;
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 25px 35px -12px #202050;
    border-color: #4f6fff;
}

.post-title {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, #ffffff, #c6d6ff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 0.5rem;
}

.post-meta {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin: 0.8rem 0 1rem;
    font-size: 1.1rem;
}

.author-link {
    color: #aab9ff;
    font-weight: 600;
    text-decoration: none;
    border-bottom: 2px dotted #5f7cff;
    transition: 0.2s;
    cursor: pointer;
}

.author-link:hover {
    color: white;
    border-bottom: 2px solid white;
}

.post-excerpt {
    color: #b6c2e0;
    line-height: 1.5;
    font-size: 1rem;
    word-break: break-word;
}

.user-info-card {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
    background: rgba(35, 35, 60, 0.7);
}

.user-avatar {
    font-size: 4rem;
    color: #8da1ff;
    background: #1e1e38;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 3px solid #5c7aff;
}

.user-details h2 {
    font-size: 2.2rem;
    font-weight: 600;
}

.user-details p {
    color: #9dafdf;
    font-size: 1.2rem;
}

.comments-section {
    margin-top: 2.5rem;
}

.comment-item {
    margin-bottom: 1.5rem;
    border-radius: 1.8rem;
    background: rgba(18, 18, 35, 0.8);
    border-left: 3px solid #3c4e9b;
}

.comment-author {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: #bac8ff;
}

.comment-author i {
    font-size: 1.8rem;
    color: #5f7cff;
}

.back-home-hint {
    margin: 2rem 0 0.5rem;
    font-size: 0.95rem;
    color: #6b7bb8;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.profile-posts-grid {
    display: flex;
    flex-direction: column;
}

hr {
    border: 0.5px solid #2f3060;
    margin: 1.8rem 0;
}

@media (max-width: 650px) {
    body { padding: 1rem; }
    header { flex-direction: column; align-items: stretch; }
    .post-title { font-size: 1.5rem; }
}