:root {
    --primary: #4f46e5;
    --bg: #f9fafb;
    --text: #1f2937;
    --border: #e5e7eb;
}
body { font-family: system-ui, -apple-system, sans-serif; background: var(--bg); color: var(--text); margin: 0; padding: 0; line-height: 1.5; }
.container { max-width: 1200px; margin: 0 auto; padding: 2rem; }
header { background: white; border-bottom: 1px solid var(--border); padding: 1rem 0; margin-bottom: 2rem; }
.header-content { max-width: 1200px; margin: 0 auto; padding: 0 2rem; display: flex; justify-content: space-between; align-items: center; }
.btn { background: var(--primary); color: white; padding: 0.5rem 1rem; border-radius: 0.375rem; text-decoration: none; border: none; cursor: pointer; font-size: 0.875rem; }
.btn:hover { opacity: 0.9; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }

/* Forms */
.form-group { margin-bottom: 1rem; }
label { display: block; margin-bottom: 0.5rem; font-weight: 500; }
input, select { width: 100%; padding: 0.5rem; border: 1px solid var(--border); border-radius: 0.375rem; box-sizing: border-box; }
.search-bar { display: flex; flex-wrap: wrap; gap: 0.5rem; max-width: 800px; margin: 0 auto; justify-content: center; }

/* Drag & Drop Zone */
.drop-zone {
    border: 2px dashed #cbd5e1;
    border-radius: 0.5rem;
    padding: 2.5rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    background: #f8fafc;
}
.drop-zone:hover {
    border-color: var(--primary);
    background-color: #eef2ff;
}
.drop-zone input[type="file"] {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    opacity: 0;
    cursor: pointer;
}
.drop-text { pointer-events: none; color: #64748b; }
.drop-text strong { color: var(--primary); }

/* Grid */
.media-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 1.5rem; }
.media-card { background: white; border: 1px solid var(--border); border-radius: 0.5rem; overflow: hidden; }
.media-preview { aspect-ratio: 16/9; background: #eee; overflow: hidden; }
.media-preview img, .media-preview video { width: 100%; height: 100%; object-fit: cover; }
.media-info { padding: 1rem; }
.media-title { font-weight: bold; margin: 0 0 0.5rem 0; }
.tags { display: flex; flex-wrap: wrap; gap: 0.25rem; font-size: 0.75rem; margin-top: 0.5rem; }
.tag { background: #e0e7ff; color: var(--primary); padding: 0.1rem 0.4rem; border-radius: 999px; }

/* Admin */
.login-box { max-width: 400px; margin: 4rem auto; background: white; padding: 2rem; border-radius: 0.5rem; border: 1px solid var(--border); }
.alert { padding: 1rem; margin-bottom: 1rem; border-radius: 0.375rem; background: #fee2e2; color: #991b1b; }
.success { background: #d1fae5; color: #065f46; }