:root {
    --primary-color: #7c3aed;
    --primary-dark: #6d28d9;
    --secondary-color: #ec4899;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --dark-bg: #0a0e14;
    --dark-card: #151920;
    --dark-hover: #1e2329;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #2d333d;
    
    --critical-color: #dc2626;
    --high-color: #ea580c;
    --medium-color: #f59e0b;
    --low-color: #10b981;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    min-height: 100vh;
}

/* ============ LOGIN PAGE - DARK MODE ============ */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f1419 0%, #1a1f2e 50%, #252b3b 100%);
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border-radius: 50%;
    top: -250px;
    left: -250px;
    animation: float 6s ease-in-out infinite;
    filter: blur(60px);
}

.login-page::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1), rgba(99, 102, 241, 0.1));
    border-radius: 50%;
    bottom: -200px;
    right: -200px;
    animation: float 8s ease-in-out infinite;
    filter: blur(60px);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(20px); }
}

.login-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 450px;
    padding: 20px;
}

.login-box {
    background: var(--dark-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 50px 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 100px rgba(99, 102, 241, 0.1);
    animation: slideUp 0.5s ease-out;
}

.register-box {
    margin-top: 20px;
}

/* Responsividade Mobile - Login */
@media (max-width: 768px) {
    .login-container {
        max-width: 100%;
        padding: 15px;
    }
    
    .login-box {
        padding: 30px 20px;
        border-radius: 15px;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo-section {
    text-align: center;
    margin-bottom: 40px;
}

.logo-section i {
    font-size: 64px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
    display: block;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.logo-section h1 {
    color: var(--text-primary);
    font-size: 32px;
    margin-bottom: 10px;
    font-weight: 700;
}

.logo-section p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* Mobile - Logo Section */
@media (max-width: 768px) {
    .logo-section i {
        font-size: 48px;
    }
    
    .logo-section h1 {
        font-size: 24px;
    }
    
    .logo-section p {
        font-size: 13px;
    }
}

.auth-form {
    margin-bottom: 25px;
}

.form-group {
    margin-bottom: 25px;
}

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

.form-group label i {
    margin-right: 8px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 15px;
    transition: all 0.3s;
    background: var(--dark-hover);
    color: var(--text-primary);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--dark-bg);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Mobile - Forms */
@media (max-width: 768px) {
    .form-group input,
    .form-group textarea {
        font-size: 16px; /* Previne zoom no iOS */
        padding: 12px 14px;
    }
}

.btn {
    padding: 14px 28px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    width: 100%;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5), 0 0 40px rgba(99, 102, 241, 0.2);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:active {
    transform: translateY(0);
}

.form-footer {
    text-align: center;
    margin-top: 25px;
}

.form-footer p {
    color: var(--text-secondary);
    font-size: 14px;
}

.form-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.form-footer a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.message {
    margin-top: 20px;
    padding: 12px 16px;
    border-radius: 10px;
    text-align: center;
    font-size: 14px;
    display: none;
    border: 1px solid transparent;
}

.message.error {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--danger-color);
    color: #fca5a5;
    display: block;
}

.message.success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success-color);
    color: #6ee7b7;
    display: block;
}

/* ============ DASHBOARD ============ */
.dashboard {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: 280px;
    background: var(--dark-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    box-shadow: 4px 0 10px rgba(0, 0, 0, 0.2);
}

.sidebar-header {
    padding: 30px 25px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 15px;
}

.sidebar-header i {
    font-size: 36px;
    color: var(--primary-color);
}

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

.sidebar-nav {
    flex: 1;
    padding: 20px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 16px 25px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: var(--dark-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--dark-hover);
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

.nav-item i {
    font-size: 20px;
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.top-bar {
    background: var(--dark-card);
    padding: 25px 40px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar h1 {
    font-size: 28px;
    color: var(--text-primary);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
}

.user-info i {
    font-size: 32px;
    color: var(--primary-color);
}

.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 30px 40px;
}

.page {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 35px;
}

.stat-card {
    background: var(--dark-card);
    padding: 28px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    gap: 20px;
    border: 1px solid var(--border-color);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.05));
    transform: translateX(100%);
    transition: transform 0.6s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.3);
}

.stat-card:hover::after {
    transform: translateX(0);
}

.stat-icon {
    width: 70px;
    height: 70px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    transition: all 0.3s ease;
    position: relative;
}

.stat-card:hover .stat-icon {
    transform: scale(1.1) rotate(5deg);
}

.stat-icon.critical {
    background: linear-gradient(135deg, rgba(220, 38, 38, 0.2), rgba(220, 38, 38, 0.3));
    color: var(--critical-color);
    box-shadow: 0 0 20px rgba(220, 38, 38, 0.3);
}

.stat-icon.high {
    background: linear-gradient(135deg, rgba(234, 88, 12, 0.2), rgba(234, 88, 12, 0.3));
    color: var(--high-color);
    box-shadow: 0 0 20px rgba(234, 88, 12, 0.3);
}

.stat-content h3 {
    font-size: 36px;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.stat-content p {
    color: var(--text-secondary);
    font-size: 14px;
}

.chart-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
}

.card {
    background: var(--dark-card);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s ease;
}

.card:hover {
    border-color: rgba(99, 102, 241, 0.5);
    box-shadow: 0 8px 30px rgba(99, 102, 241, 0.15);
    transform: translateY(-2px);
}

.card:hover::before {
    left: 100%;
}

.card h2 {
    font-size: 20px;
    color: var(--text-primary);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.card h2 i {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.card-description {
    color: var(--text-secondary);
    margin-bottom: 25px;
    font-size: 15px;
}

.severity-bars {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.severity-bar {
    display: grid;
    grid-template-columns: 100px 1fr 50px;
    align-items: center;
    gap: 15px;
}

.severity-bar .label {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-secondary);
}

.severity-bar .bar {
    height: 28px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    overflow: hidden;
    position: relative;
}

.severity-bar .fill {
    height: 100%;
    border-radius: 20px;
    transition: width 0.5s ease;
}

.severity-bar.critical .fill,
.bar.critical .fill {
    background: linear-gradient(90deg, var(--critical-color), #b91c1c);
}

.bar.high .fill {
    background: linear-gradient(90deg, var(--high-color), #c2410c);
}

.bar.medium .fill {
    background: linear-gradient(90deg, var(--medium-color), #d97706);
}

.bar.low .fill {
    background: linear-gradient(90deg, var(--low-color), #059669);
}

.severity-bar .count {
    font-weight: 700;
    color: var(--text-primary);
    text-align: right;
}

.recent-list, .history-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.recent-item, .history-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 18px;
    border-radius: 10px;
    border-left: 4px solid var(--primary-color);
    transition: all 0.3s;
}

.recent-item:hover, .history-item:hover {
    background: rgba(255, 255, 255, 0.05);
    transform: translateX(5px);
    cursor: pointer;
}

.recent-item h4, .history-item h4 {
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 15px;
}

.recent-item p, .history-item p {
    color: var(--text-secondary);
    font-size: 13px;
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
    font-size: 15px;
}

/* ============ TABS ============ */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 25px;
    border-bottom: 2px solid var(--border-color);
}

.tab-btn {
    padding: 12px 24px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 15px;
    font-weight: 600;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

/* ============ FORMS ============ */
.form-group textarea {
    font-family: 'Courier New', monospace;
    resize: vertical;
}

/* ============ UPLOAD AREA ============ */
.upload-area {
    border: 3px dashed var(--border-color);
    border-radius: 12px;
    padding: 60px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.upload-area i {
    font-size: 64px;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: block;
}

.upload-area p {
    color: var(--text-secondary);
    font-size: 15px;
}

.upload-area input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    cursor: pointer;
}

/* ============ SCAN RESULTS ============ */
.scan-results {
    margin-top: 35px;
}

.vulnerability-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

.vuln-item {
    background: rgba(255, 255, 255, 0.03);
    padding: 20px;
    border-radius: 12px;
    border-left: 4px solid;
}

.vuln-item.CRITICAL {
    border-left-color: var(--critical-color);
}

.vuln-item.HIGH {
    border-left-color: var(--high-color);
}

.vuln-item.MEDIUM {
    border-left-color: var(--medium-color);
}

.vuln-item.LOW {
    border-left-color: var(--low-color);
}

.vuln-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.vuln-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
}

.vuln-severity {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    color: white;
}

.vuln-severity.CRITICAL {
    background: var(--critical-color);
}

.vuln-severity.HIGH {
    background: var(--high-color);
}

.vuln-severity.MEDIUM {
    background: var(--medium-color);
}

.vuln-severity.LOW {
    background: var(--low-color);
}

.vuln-description {
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-size: 14px;
}

.vuln-code {
    background: rgba(0, 0, 0, 0.4);
    padding: 12px;
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    color: #fbbf24;
    margin: 10px 0;
    overflow-x: auto;
}

.vuln-recommendation {
    color: var(--success-color);
    font-size: 13px;
    margin-top: 10px;
    padding-left: 20px;
    border-left: 3px solid var(--success-color);
}

/* ============ LOADING ============ */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.9);
    display: none;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    gap: 20px;
    z-index: 9999;
}

.loading-overlay.active {
    display: flex;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(99, 102, 241, 0.3);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-overlay p {
    color: var(--text-primary);
    font-size: 18px;
    font-weight: 600;
}

/* ============ RESPONSIVE - MELHORADO ============ */

/* Tablets e telas médias */
@media (max-width: 1024px) {
    .chart-section {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .top-bar {
        padding: 20px 30px;
    }
    
    .content-area {
        padding: 25px 30px;
    }
}

/* Mobile - Sidebar com overlay */
@media (max-width: 768px) {
    .dashboard {
        position: relative;
    }
    
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        height: 100vh;
        width: 280px;
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.active {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.5);
    }
    
    .main-content {
        width: 100%;
        margin-left: 0;
    }
    
    .top-bar {
        padding: 15px 20px;
    }
    
    .top-bar h1 {
        font-size: 20px;
    }
    
    .content-area {
        padding: 20px 15px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .stat-card {
        padding: 20px;
    }
    
    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 24px;
    }
    
    .stat-content h3 {
        font-size: 28px;
    }
    
    .card {
        padding: 20px;
    }
    
    .card h2 {
        font-size: 18px;
    }
    
    .vulnerability-item {
        padding: 15px;
    }
    
    table {
        font-size: 12px;
    }
    
    th, td {
        padding: 10px 8px;
    }
}

/* Mobile extra pequeno */
@media (max-width: 480px) {
    .top-bar {
        padding: 12px 15px;
    }
    
    .top-bar h1 {
        font-size: 18px;
    }
    
    .user-info {
        font-size: 12px;
    }
    
    .user-info i {
        font-size: 24px;
    }
    
    .content-area {
        padding: 15px 10px;
    }
    
    .stat-card {
        padding: 15px;
        flex-direction: column;
        text-align: center;
    }
    
    .stat-content h3 {
        font-size: 24px;
    }
    
    .card {
        padding: 15px;
    }
}

/* Menu toggle button para mobile */
.menu-toggle {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 24px;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
    z-index: 999;
    transition: all 0.3s;
}

.menu-toggle:active {
    transform: scale(0.95);
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

/* Overlay para fechar sidebar */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.sidebar-overlay.active {
    display: block;
    opacity: 1;
}

/* Scrollbar customizada dark mode */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--dark-hover);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-color);
}