:root {
    --who-blue-top: #005a9c;
    --who-blue-nav: #003b73;
    --who-blue-overlay: #15355e;
    --who-text-gray: #333333;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f8f9fa;
    color: var(--who-text-gray);
}

/* Header / Logo Area */
.header-area {
    background-color: white;
    padding: 20px 0;
    border-bottom: 4px solid var(--who-blue-top);
}

.logo-icon {
    color: var(--who-blue-top);
}

.logo-text {
    line-height: 1.1;
    color: var(--who-blue-top);
}

/* Hero Section */
.hero-section {
    position: relative;
    background-image: url('https://images.unsplash.com/photo-1532094349884-543bc11b234d?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
    height: 300px; /* Reduzido um pouco já que o header está mais limpo */
    display: flex;
    align-items: flex-end;
    padding-bottom: 40px;
}

.hero-title-box {
    background-color: var(--who-blue-overlay);
    color: white;
    padding: 10px 20px;
    display: inline-block;
}

.hero-title-box h1 {
    margin: 0;
    font-size: 2.2rem;
    font-weight: bold;
}

/* Main Content Container */
.validator-container {
    background: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    margin-top: -30px; /* Sobrepõe levemente a imagem de fundo */
    position: relative;
    z-index: 10;
    margin-bottom: 50px;
}

/* Instructions */
.instructions-box {
    background-color: #f1f6f9;
    border-left: 5px solid var(--who-blue-nav);
    padding: 20px;
    margin-bottom: 30px;
    border-radius: 0 4px 4px 0;
}

.info-icon {
    color: var(--who-blue-nav);
}

/* Custom Elements */
.error-log { 
    font-size: 0.9em; 
    color: #dc3545; 
}

.spinner-border { 
    display: none; 
}

.btn-who {
    background-color: var(--who-blue-nav);
    color: white;
}

.btn-who:hover {
    background-color: var(--who-blue-top);
    color: white;
}

.success-tab-btn {
    color: #198754 !important;
}

.error-tab-btn {
    color: #dc3545 !important;
}