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

:root {
    --primary: #1F4E78;
    --primary-light: #2E6EA5;
    --danger: #FF6B6B;
    --warning: #FFA500;
    --medium: #FFD700;
    --low: #90EE90;
    --bg: #f4f6f8;
    --card: #ffffff;
    --text: #333333;
    --text-light: #666666;
    --border: #e0e0e0;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* Login Page */
.login-page {
    background: linear-gradient(135deg, #1F4E78 0%, #0d2b44 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-box {
    background: var(--card);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.logo {
    text-align: center;
    margin-bottom: 8px;
}

.logo .shield {
    font-size: 48px;
    display: block;
    margin-bottom: 10px;
}

.logo h1 {
    color: var(--primary);
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 32px;
    font-size: 15px;
}

.login-form {
    margin-bottom: 24px;
}

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

.input-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text);
    font-size: 14px;
}

.input-group input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.2s;
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary);
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-login:hover {
    background: var(--primary-light);
}

.btn-login:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.error-msg {
    margin-top: 12px;
    padding: 10px;
    border-radius: 8px;
    background: #fff0f0;
    color: #d32f2f;
    font-size: 14px;
    display: none;
}

.error-msg.show {
    display: block;
}

.login-footer {
    text-align: center;
    font-size: 13px;
    color: var(--text-light);
}

.login-footer p {
    margin-bottom: 4px;
}

.demo-note {
    font-size: 12px;
    opacity: 0.8;
}

.loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* Navbar */
.navbar {
    background: var(--primary);
    color: white;
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
}

.nav-brand .shield {
    font-size: 24px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 14px;
}

.btn-logout {
    padding: 8px 16px;
    background: rgba(255,255,255,0.15);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-logout:hover {
    background: rgba(255,255,255,0.25);
}

/* Dashboard */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}

.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    color: var(--primary);
    font-size: 28px;
    margin-bottom: 6px;
}

.page-header p {
    color: var(--text-light);
}

.loading-screen {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-light);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.card {
    background: var(--card);
    border-radius: 12px;
    padding: 22px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    border-left: 5px solid #ccc;
}

.card h3 {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card p {
    font-size: 32px;
    font-weight: 700;
    color: var(--text);
}

.card.critico { border-left-color: var(--danger); background: #fff5f5; }
.card.critico p { color: var(--danger); }
.card.alto { border-left-color: var(--warning); background: #fff8e7; }
.card.alto p { color: var(--warning); }
.card.medio { border-left-color: var(--medium); background: #fffdf0; }
.card.medio p { color: #b8860b; }
.card.baixo { border-left-color: var(--low); background: #f0fff0; }
.card.baixo p { color: #2e7d32; }
.card.hosts { border-left-color: var(--primary); background: #f0f7ff; }
.card.hosts p { color: var(--primary); }

/* AI Section */
.ai-section {
    background: var(--card);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 28px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    border: 1px solid var(--border);
}

.ai-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.ai-header h2 {
    color: var(--primary);
    font-size: 20px;
}

.ai-status {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 20px;
    background: #e8f5e9;
    color: #2e7d32;
    font-weight: 600;
}

.ai-status.loading {
    background: #fff3e0;
    color: #ef6c00;
}

.ai-chat {
    max-height: 320px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 12px;
    background: #fafafa;
}

.ai-message {
    margin-bottom: 14px;
    padding: 12px 14px;
    border-radius: 10px;
    max-width: 85%;
}

.ai-message.user {
    background: var(--primary);
    color: white;
    margin-left: auto;
}

.ai-message.assistant {
    background: white;
    border: 1px solid var(--border);
    color: var(--text);
}

.ai-message p {
    margin-bottom: 6px;
}

.ai-message p:last-child {
    margin-bottom: 0;
}

.ai-input {
    display: flex;
    gap: 10px;
}

.ai-input input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 10px;
    font-size: 15px;
}

.ai-input input:focus {
    outline: none;
    border-color: var(--primary);
}

.ai-input button {
    padding: 12px 24px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.ai-input button:hover {
    background: var(--primary-light);
}

/* Tables */
.tabela-section {
    background: var(--card);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 28px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.tabela-section h2 {
    color: var(--primary);
    margin-bottom: 16px;
    font-size: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th, td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--primary);
    color: white;
    font-weight: 600;
    position: sticky;
    top: 0;
}

tr:hover {
    background: #f9f9f9;
}

.sev-badge {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    display: inline-block;
}

.sev-CRITICO { background: var(--danger); color: white; }
.sev-ALTO { background: var(--warning); color: white; }
.sev-MEDIO { background: var(--medium); color: #333; }
.sev-BAIXO { background: var(--low); color: #333; }

@media (max-width: 768px) {
    .cards { grid-template-columns: repeat(2, 1fr); }
    .navbar { padding: 12px 16px; }
    .container { padding: 16px; }
    table { font-size: 12px; }
    th, td { padding: 8px; }
    .ai-input { flex-direction: column; }
}