* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

:root {
    --primary: #4361ee;
    --secondary: #3a0ca3;
    --accent: #4cc9f0;
    --light: #f8f9fa;
    --dark: #212529;
    --success: #4bb543;
    --warning: #ffcc00;
    --danger: #dc3545;
    --gray: #6c757d;
    --light-gray: #e9ecef;
}

body {
    background-color: #f5f7fb;
    color: var(--dark);
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 1rem 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
}

.logo i { color: var(--accent); }

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 5px;
}

nav a:hover { color: var(--accent); }

.auth-buttons { display: flex; gap: 1rem; align-items: center; }

.btn {
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-size: 0.95rem;
}

.btn-primary { background-color: var(--accent); color: white; }
.btn-primary:hover { background-color: #3aa8d8; transform: translateY(-2px); }
.btn-outline { background-color: transparent; color: white; border: 2px solid white; }
.btn-outline:hover { background-color: white; color: var(--primary); }
.btn-dark { background-color: var(--dark); color: white; }

.mobile-menu { display: none; font-size: 1.5rem; cursor: pointer; color: white; }

/* Hero */
.hero {
    padding: 4rem 0;
    background: linear-gradient(rgba(67, 97, 238, 0.9), rgba(58, 12, 163, 0.9));
    color: white;
    text-align: center;
}

.hero h1 { font-size: 2.8rem; margin-bottom: 1rem; line-height: 1.2; }
.hero p { font-size: 1.1rem; max-width: 700px; margin: 0 auto 2rem; }

/* Tabs */
.content-tabs {
    display: flex;
    justify-content: center;
    margin: 2.5rem 0;
    flex-wrap: wrap;
    gap: 1rem;
}

.tab-btn {
    padding: 0.7rem 1.4rem;
    background-color: white;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    text-decoration: none;
    color: var(--dark);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

/* Content grid / cards */
.content-section { padding: 2rem 0 4rem; }

.content-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.content-card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
}

.content-card:hover { transform: translateY(-5px); }

.card-image {
    height: 180px;
    background-size: cover;
    background-position: center;
    background-color: var(--light-gray);
}

.card-content { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }

.card-category {
    display: inline-block;
    background-color: var(--light);
    color: var(--primary);
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 1rem;
    width: fit-content;
}

.card-content h3 { margin-bottom: 0.5rem; color: var(--dark); }
.card-content h3 a { color: inherit; text-decoration: none; }
.card-content p { color: var(--gray); flex: 1; }

.card-meta {
    display: flex;
    justify-content: space-between;
    color: var(--gray);
    font-size: 0.9rem;
    margin-top: 1rem;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--gray);
}

/* Forms */
.form-card {
    background: white;
    max-width: 560px;
    margin: 3rem auto;
    padding: 2.5rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.form-card h2 { color: var(--secondary); margin-bottom: 1.5rem; }

.form-group { margin-bottom: 1.2rem; }
.form-group label { display: block; font-weight: 600; margin-bottom: 0.4rem; font-size: 0.95rem; }

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.7rem 1rem;
    border: 1px solid var(--light-gray);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group textarea { min-height: 160px; resize: vertical; }

.form-actions { margin-top: 1.5rem; }

.alert {
    padding: 0.9rem 1.2rem;
    border-radius: 8px;
    margin-bottom: 1.2rem;
    font-size: 0.95rem;
}

.alert-error { background: #fde8e8; color: var(--danger); }
.alert-success { background: #e6f6e6; color: #2d8a2d; }

.muted-link { color: var(--gray); font-size: 0.9rem; }
.muted-link a { color: var(--primary); }

/* Single post page */
.post-page { max-width: 760px; margin: 2.5rem auto; background: white; padding: 2.5rem; border-radius: 10px; box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
.post-page h1 { color: var(--secondary); margin-bottom: 0.5rem; }
.post-meta { color: var(--gray); margin-bottom: 1.5rem; font-size: 0.95rem; }
.post-image { width: 100%; border-radius: 8px; margin-bottom: 1.5rem; }
.post-content { white-space: pre-wrap; line-height: 1.8; }
audio.post-audio { width: 100%; margin-bottom: 1.5rem; }

/* Comments */
.comments-section { margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--light-gray); }
.comment { padding: 1rem 0; border-bottom: 1px solid var(--light-gray); }
.comment-author { font-weight: 600; }
.comment-meta { color: var(--gray); font-size: 0.85rem; margin-bottom: 0.3rem; }
.comment-form textarea { width: 100%; min-height: 90px; padding: 0.8rem; border: 1px solid var(--light-gray); border-radius: 8px; font-family: inherit; }

/* Footer */
footer { background-color: var(--dark); color: white; padding: 3rem 0 1.5rem; margin-top: 3rem; }
.copyright { text-align: center; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.1); color: #adb5bd; font-size: 0.9rem; }

@media (max-width: 768px) {
    .mobile-menu { display: block; }
    nav ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--secondary);
        flex-direction: column;
        padding: 1rem 0;
        text-align: center;
        gap: 1rem;
    }
    nav ul.show { display: flex; }
    .auth-buttons { display: none; }
    .hero h1 { font-size: 2rem; }
}