* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: #f5f5f5;
}

/* Login */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
}

.login-box h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #666;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

button {
    width: 100%;
    padding: 12px;
    background: #667eea;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
}

button:hover {
    background: #5a67d8;
}

.error-message {
    color: #e53e3e;
    margin-top: 10px;
    text-align: center;
}

/* Admin Layout */
.admin-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 250px;
    background: #2d3748;
    color: white;
    padding: 20px;
}

.sidebar h2 {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid #4a5568;
}

.sidebar ul {
    list-style: none;
}

.sidebar ul li {
    margin-bottom: 10px;
}

.sidebar ul li a {
    color: #cbd5e0;
    text-decoration: none;
    display: block;
    padding: 10px;
    border-radius: 5px;
    transition: background 0.3s;
}

.sidebar ul li a:hover,
.sidebar ul li a.active {
    background: #4a5568;
    color: white;
}

.content {
    flex: 1;
    padding: 30px;
}

/* Stats */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.stat-card h3 {
    color: #666;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 32px;
    font-weight: bold;
    color: #2d3748;
}

/* Links e Vídeos */
.link-item,
.video-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 15px;
}

.link-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.status {
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
}

.status-pendente {
    background: #fefcbf;
    color: #975a16;
}

.status-realizado {
    background: #c6f6d5;
    color: #22543d;
}

.status-expirado {
    background: #fed7d7;
    color: #9b2c2c;
}

.link-actions,
.video-actions {
    display: flex;
    gap: 10px;
}

.link-actions button,
.video-actions button,
.btn-download {
    padding: 8px 16px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 14px;
    text-decoration: none;
    display: inline-block;
}

.btn-download {
    background: #48bb78;
    color: white;
}

.btn-delete {
    background: #fc8181;
    color: white;
}

/* Forms */
.form-container {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    max-width: 600px;
}

textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    min-height: 100px;
    resize: vertical;
}

/* Responsivo */
@media (max-width: 768px) {
    .admin-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
    }
    
    .content {
        padding: 20px;
    }
}