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

body {
    font-family: 'Segoe UI', 'Inter', 'Roboto', sans-serif;
    line-height: 1.6;
    background: #0a0a0a;
    color: #e0e0e0;
    overflow-x: hidden;
}

/* Header - Dark & Professional */
header {
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    border-bottom: 2px solid #00ff41;
    color: white;
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(0, 255, 65, 0.02) 10px,
        rgba(0, 255, 65, 0.02) 20px
    );
    pointer-events: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.logo {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.logo span {
    color: #00ff41;
    text-shadow: 0 0 10px rgba(0, 255, 65, 0.3);
}

.beta-badge {
    display: inline-block;
    background: #ff3300;
    color: white;
    font-size: 0.8rem;
    padding: 2px 8px;
    border-radius: 4px;
    margin-left: 10px;
    vertical-align: middle;
    font-weight: bold;
}

h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #ffffff 0%, #00ff41 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.8;
    color: #b0b0b0;
}

.btn {
    display: inline-block;
    padding: 14px 35px;
    background: #00ff41;
    color: #0a0a0a;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    transition: all 0.3s;
    border: none;
    font-size: 1rem;
    cursor: pointer;
}

.btn:hover {
    background: #00cc34;
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 255, 65, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid #00ff41;
    color: #00ff41;
    margin-left: 15px;
}

.btn-outline:hover {
    background: rgba(0, 255, 65, 0.1);
    transform: translateY(-2px);
}

.btn-danger {
    background: #ff3300;
}

.btn-danger:hover {
    background: #cc2900;
    box-shadow: 0 5px 20px rgba(255, 51, 0, 0.3);
}

/* Features */
.features {
    padding: 80px 0;
    background: #0f0f0f;
    border-bottom: 1px solid #1f1f1f;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    font-weight: 700;
    color: #ffffff;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: #00ff41;
    margin: 20px auto 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: #1a1a1a;
    padding: 35px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid #2a2a2a;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #00ff41, #ff3300);
    transform: translateX(-100%);
    transition: transform 0.3s;
}

.feature-card:hover::before {
    transform: translateX(0);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: #00ff41;
    box-shadow: 0 5px 30px rgba(0, 255, 65, 0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #ffffff;
}

.feature-card p {
    color: #b0b0b0;
    line-height: 1.6;
}

/* Categorias */
.categories {
    padding: 80px 0;
    background: #0a0a0a;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.category-box {
    background: #1a1a1a;
    border: 1px solid #2a2a2a;
    color: white;
    padding: 20px;
    border-radius: 4px;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
}

.category-box.income {
    border-left: 4px solid #00ff41;
}

.category-box.income:hover {
    border-color: #00ff41;
    box-shadow: 0 0 20px rgba(0, 255, 65, 0.2);
}

.category-box.expense {
    border-left: 4px solid #ff3300;
}

.category-box.expense:hover {
    border-color: #ff3300;
    box-shadow: 0 0 20px rgba(255, 51, 0, 0.2);
}

.category-box:hover {
    transform: translateX(5px);
}

.category-icon {
    font-size: 2rem;
    margin-bottom: 10px;
}

.category-title {
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.category-value {
    font-size: 0.8rem;
    color: #888;
    margin-top: 5px;
}

/* Dashboard Preview */
.dashboard-preview {
    padding: 80px 0;
    background: #0f0f0f;
    border-top: 1px solid #1f1f1f;
    border-bottom: 1px solid #1f1f1f;
}

.preview-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.preview-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: #ffffff;
}

.preview-list {
    list-style: none;
    margin-top: 20px;
}

.preview-list li {
    margin-bottom: 15px;
    padding-left: 30px;
    position: relative;
    color: #b0b0b0;
}

.preview-list li:before {
    content: "▸";
    position: absolute;
    left: 0;
    color: #00ff41;
    font-weight: bold;
    font-size: 1.2rem;
}

.preview-image {
    background: linear-gradient(135deg, #1a1a1a 0%, #0a0a0a 100%);
    padding: 40px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid #2a2a2a;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 20px;
}

.stat-card {
    background: #0a0a0a;
    padding: 15px;
    border-radius: 4px;
    text-align: center;
    border: 1px solid #2a2a2a;
}

.stat-label {
    font-size: 0.8rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: bold;
    margin-top: 5px;
}

.stat-value.positive {
    color: #00ff41;
}

.stat-value.negative {
    color: #ff3300;
}

/* How it works */
.how-it-works {
    padding: 80px 0;
    background: #0a0a0a;
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.step {
    text-align: center;
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    background: #1a1a1a;
    border: 2px solid #00ff41;
    color: #00ff41;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 20px;
}

.step h3 {
    color: #ffffff;
    margin-bottom: 10px;
}

.step p {
    color: #888;
    font-size: 0.9rem;
}

/* Developer Section */
.developer {
    padding: 80px 0;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a1a 100%);
    border-top: 1px solid #00ff41;
    border-bottom: 1px solid #ff3300;
}

.developer-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 50px;
    align-items: center;
    background: rgba(26, 26, 26, 0.5);
    padding: 50px;
    border-radius: 8px;
    border: 1px solid #2a2a2a;
}

.developer-avatar .emoji {
    font-size: 5rem;
    filter: drop-shadow(0 0 10px rgba(0, 255, 65, 0.3));
}

.developer-info h3 {
    font-size: 2rem;
    margin-bottom: 15px;
    color: #ffffff;
}

.developer-info p {
    margin-bottom: 20px;
    color: #b0b0b0;
}

.contact-links {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(0, 255, 65, 0.1);
    color: #00ff41;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s;
    border: 1px solid rgba(0, 255, 65, 0.3);
}

.contact-link:hover {
    background: rgba(0, 255, 65, 0.2);
    transform: translateY(-2px);
    border-color: #00ff41;
}

/* Download Section */
.download {
    padding: 80px 0;
    background: #0f0f0f;
    text-align: center;
}

.requirements-box {
    margin-top: 30px;
    padding: 30px;
    background: #1a1a1a;
    border-radius: 8px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
    border: 1px solid #2a2a2a;
}

.requirements-box h3 {
    color: #00ff41;
    margin-bottom: 20px;
}

.requirements-box p {
    color: #b0b0b0;
    margin-bottom: 10px;
    font-family: 'Courier New', monospace;
}

/* Footer */
footer {
    background: #0a0a0a;
    color: #888;
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid #1f1f1f;
}

.social-links {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.social-links a {
    color: #888;
    text-decoration: none;
    transition: color 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.social-links a:hover {
    color: #00ff41;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    .preview-container {
        grid-template-columns: 1fr;
    }
    
    .btn-outline {
        margin-left: 0;
        margin-top: 10px;
    }
    
    .developer-content {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 30px;
    }

    .contact-links {
        justify-content: center;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #0a0a0a;
}

::-webkit-scrollbar-thumb {
    background: #2a2a2a;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #00ff41;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}