* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: system-ui, sans-serif;
    background: #f8fafc;
    color: #0f172a;
    line-height: 1.5;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 1.5rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

h1 { font-size: 2.1rem; }

.btn {
    padding: 0.7rem 1.3rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
}

.btn-primary    { background: #3b82f6; color: white; }
.btn-secondary  { background: #e2e8f0; color: #334155; }

.ad-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.form-group {
    margin-bottom: 1.4rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

input, textarea {
    width: 100%;
    padding: 0.9rem;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 1.05rem;
}

textarea { min-height: 140px; resize: vertical; }

.message {
    padding: 1rem;
    margin: 1.5rem 0;
    border-radius: 6px;
    text-align: center;
}

.message.success { background: #ecfdf5; color: #065f46; }
.message.error   { background: #fee2e2; color: #991b1b; }
.hidden { display: none; }

.ads-grid {
    display: grid;
    gap: 1.2rem;
}

.ad-card {
    background: white;
    padding: 1.4rem;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
    border-left: 4px solid #3b82f6;
}

.ad-card h2 {
    margin: 0 0 0.6rem;
    font-size: 1.35rem;
}

.ad-card time {
    display: block;
    color: #64748b;
    font-size: 0.9rem;
    margin-bottom: 0.9rem;
}


.loading, .empty {
    text-align: center;
    color: #64748b;
    padding: 4rem 0;
    font-size: 1.1rem;
}

.ad-card a {
    display: inline-block;
    margin: 4px 0;
    padding: 4px 8px;

    color: #475569;                
    background: #f1f5f9;            
    border: 1px solid #e2e8f0;      
    border-radius: 6px;

    text-decoration: none;
    font-size: 0.95rem;

    transition: all 0.2s ease;
    word-break: break-all;
}

/* Hover */
.ad-card a:hover {
    color: #0f172a;                 
    background: #e2e8f0;            
    border-color: #cbd5e1;          
}


.ad-card a::before {
    content: "🔗 ";
    opacity: 0.7;
}


.hidden {
  display: none !important;
}

#loginForm {
  max-width: 400px;
  margin: 4rem auto;
  background: white;
  padding: 2rem;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

#loginForm input {
  width: 100%;
  margin: 0.8rem 0;
  padding: 0.9rem;
}