:root {
    --primary: #667eea;
    --primary-dark: #5a6fd8;
    --secondary: #764ba2;
    --accent: #f093fb;
    --success: #4fd1c7;
    --warning: #f6ad55;
    --error: #fc8181;
    --dark: #2d3748;
    --dark-gray: #4a5568;
    --gray: #718096;
    --light-gray: #a0aec0;
    --light: #f7fafc;
    --white: #ffffff;
}

* {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    color: var(--dark);
    min-height: 100vh;
    line-height: 1.6;
}

.gradient-bg {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.navbar {
    padding: 1rem 0;
    backdrop-filter: blur(10px);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--white) !important;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--white) !important;
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.card {
    border: none;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    overflow: hidden;
    background: var(--white);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.color-box {
    height: 140px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    margin-bottom: 20px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.color-box::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 0.6s ease;
}

.color-box:hover::before {
    left: 100%;
}

.color-box:hover {
    transform: scale(1.05) rotate(2deg);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.color-code {
    background: rgba(255, 255, 255, 0.95);
    padding: 10px 20px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.color-copied {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--dark);
    color: var(--white);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 600;
    opacity: 0;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border: none;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
}

.btn-outline-primary {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
    padding: 10px 25px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
}

.feature-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: var(--white);
    font-size: 2rem;
    box-shadow: 0 8px 20px rgba(102, 126, 234, 0.3);
    transition: all 0.3s ease;
}

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

.footer {
    background: linear-gradient(135deg, var(--dark), #1a202c);
    color: var(--white);
    padding: 50px 0 20px;
    margin-top: 100px;
}

.footer a {
    color: var(--light-gray);
    transition: color 0.3s ease;
}

.footer a:hover {
    color: var(--white);
}

.loading {
    display: none;
    text-align: center;
    padding: 40px;
}

.spinner-border {
    width: 3rem;
    height: 3rem;
    color: var(--primary);
}

.color-stats {
    background: var(--white);
    border-radius: 20px;
    padding: 25px;
    margin-top: 25px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.export-options {
    margin-top: 20px;
}

.color-palette {
    margin-top: 30px;
}

.nav-tabs {
    border-bottom: 2px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 30px;
}

.nav-tabs .nav-link {
    border: none;
    color: var(--gray);
    font-weight: 500;
    padding: 15px 30px;
    border-radius: 12px 12px 0 0;
    transition: all 0.3s ease;
    margin-right: 5px;
}

.nav-tabs .nav-link:hover {
    color: var(--primary);
    background: rgba(102, 126, 234, 0.05);
}

.nav-tabs .nav-link.active {
    color: var(--primary);
    border-bottom: 3px solid var(--primary);
    background: rgba(102, 126, 234, 0.08);
}

.converter-box {
    background: var(--white);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.preview-color {
    height: 120px;
    border-radius: 16px;
    margin-top: 20px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.tool-card {
    text-align: center;
    padding: 40px 25px;
    height: 100%;
    transition: all 0.3s ease;
    border-radius: 20px;
}

.tool-card:hover {
    background: linear-gradient(135deg, #f8faff, #f0f4ff);
    transform: translateY(-5px);
}

.tool-icon {
    font-size: 2.8rem;
    color: var(--primary);
    margin-bottom: 25px;
    transition: all 0.3s ease;
}

.tool-card:hover .tool-icon {
    transform: scale(1.1);
    color: var(--secondary);
}

.palette-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 25px;
    margin-top: 30px;
}

.palette-item {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    background: var(--white);
}

.palette-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.palette-colors {
    height: 140px;
    display: flex;
}

.palette-color {
    flex: 1;
    transition: all 0.3s ease;
}

.palette-item:hover .palette-color {
    transform: scale(1.05);
}

.palette-name {
    padding: 20px;
    background: var(--white);
    font-weight: 600;
    color: var(--dark);
    text-align: center;
    font-size: 1.1rem;
}

.table {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.table th {
    border-top: none;
    font-weight: 600;
    color: var(--dark);
    background: rgba(102, 126, 234, 0.05);
    padding: 15px;
}

.table td {
    padding: 15px;
    border-color: rgba(0, 0, 0, 0.05);
}

.badge-color {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: inline-block;
    margin-right: 10px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.hero-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8faff 0%, #eef2ff 100%);
    border-radius: 0 0 40px 40px;
    margin-bottom: 60px;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><polygon fill="%23667eea" fill-opacity="0.02" points="0,1000 1000,0 1000,1000"/></svg>');
    background-size: cover;
}

.stat-card {
    text-align: center;
    padding: 25px;
    border-radius: 20px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    background: var(--white);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--gray);
    font-weight: 500;
}

.color-card {
    height: 100px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 600;
    margin-bottom: 20px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
    font-size: 1.1rem;
}

.color-card:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1); }
    50% { transform: scale(1.05); box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15); }
    100% { transform: scale(1); box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1); }
}

.scanning-animation {
    position: relative;
    overflow: hidden;
    border-radius: 20px;
}

.scanning-animation::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.6), transparent);
    animation: scanning 3s infinite;
}

@keyframes scanning {
    0% { left: -100%; }
    100% { left: 100%; }
}

.light-color {
    border: 2px solid rgba(0, 0, 0, 0.15) !important;
}

.dark-text {
    color: var(--dark) !important;
}

.website-info {
    background: linear-gradient(135deg, #f8faff, #eef2ff);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--primary);
}

.website-icon {
    font-size: 2.2rem;
    color: var(--primary);
    margin-right: 20px;
}

.form-control {
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    padding: 12px 20px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-text {
    color: var(--gray);
    font-size: 0.9rem;
}

.progress {
    height: 8px;
    border-radius: 10px;
    background: rgba(102, 126, 234, 0.1);
}

.progress-bar {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
}

/* Responsividade */
@media (max-width: 768px) {
    .hero-section {
        padding: 60px 0;
        border-radius: 0 0 30px 30px;
    }
    
    .color-box {
        height: 120px;
    }
    
    .palette-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 20px;
    }
    
    .website-info {
        flex-direction: column;
        text-align: center;
        padding: 25px;
    }
    
    .website-icon {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .nav-tabs .nav-link {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
    
    .feature-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
    }
    
    .tool-card {
        padding: 30px 20px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-section h1 {
        font-size: 2.2rem;
    }
    
    .color-card {
        height: 80px;
        font-size: 1rem;
    }
    
    .stat-value {
        font-size: 2rem;
    }
    
    .btn-primary,
    .btn-outline-primary {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

/* Animações suaves */
.fade-in {
    animation: fadeIn 0.6s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn 0.8s ease-out;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Efeitos de hover melhorados */
.hover-lift {
    transition: all 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
}

/* Gradientes sutis */
.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Sombras consistentes */
.shadow-soft {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.shadow-medium {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.shadow-strong {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}