:root {
    --bg-color: #f0f2f5; --card-bg: #ffffff; --text-color: #1c1e21;
    --primary: #0866ff; --primary-hover: #075ce4;
    --danger: #f02849; --success: #42b72a; --warning: #f7b924;
    --border: #dddfe2; --text-muted: #65676b;
}

body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background: var(--bg-color); color: var(--text-color); line-height: 1.5; margin: 0; padding: 20px; }
.container { max-width: 1000px; margin: 0 auto; }

.card { 
    background: var(--card-bg); padding: 25px; border-radius: 12px; 
    margin-bottom: 20px; box-shadow: 0 2px 4px rgba(0,0,0,0.1); 
    border: 1px solid var(--border);
}

.btn { 
    display: inline-flex; align-items: center; justify-content: center;
    padding: 10px 20px; border-radius: 8px; border: none; font-weight: 600;
    cursor: pointer; text-decoration: none; transition: background 0.2s;
    font-size: 14px; gap: 8px;
}
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-hover); }
.btn-secondary { background: #e4e6eb; color: #050505; }
.btn-secondary:hover { background: #d8dadf; }
.btn-danger { background: var(--danger); color: white; }
.btn-warning { background: var(--warning); color: black; }

.profile-img { width: 100px; height: 100px; border-radius: 50%; object-fit: cover; border: 3px solid var(--primary); }
.badge { padding: 4px 8px; border-radius: 6px; font-size: 12px; font-weight: bold; }
.status-confirmed { background: #e7f3ff; color: #1877f2; }
.status-rejected { background: #fff1f0; color: #f02849; }

input, select, textarea { 
    width: 100%; padding: 12px; margin: 8px 0 18px; border: 1px solid var(--border); 
    border-radius: 8px; background: #f5f6f7; box-sizing: border-box;
}

table { width: 100%; border-collapse: collapse; }
th { text-align: left; color: var(--text-muted); padding: 12px; border-bottom: 2px solid var(--border); }
td { padding: 12px; border-bottom: 1px solid var(--border); }