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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background: #f5f7fa;
    color: #1a202c;
    line-height: 1.5;
}

.landing-container {
    min-height: 100vh;
    background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
}

.landing-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1200px;
    margin: 0 auto;
    flex-wrap: wrap;
    gap: 1rem;
}

.nav-brand {
    font-size: 1.3rem;
    font-weight: bold;
    color: #2d3748;
    display: flex;
    align-items: center;
}

.nav-brand i {
    color: #4a5568;
    margin-right: 8px;
    font-size: 1.2rem;
}

.nav-links {
    display: flex;
    gap: 0.8rem;
    align-items: center;
    flex-wrap: wrap;
}

.nav-links a {
    text-decoration: none;
}

.nav-btn {
    padding: 8px 18px;
    border-radius: 8px;
    color: #4a5568;
    transition: all 0.3s;
    font-size: 0.9rem;
    white-space: nowrap;
}

.nav-btn.primary {
    background: #2d3748;
    color: white;
}

.nav-btn.primary:hover {
    background: #1a202c;
    transform: translateY(-2px);
}

.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 5%;
    gap: 2rem;
}

.hero-content h1 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: #1a202c;
}

.hero-content p {
    font-size: 1.1rem;
    color: #4a5568;
    margin-bottom: 1.5rem;
}

.hero-buttons {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.btn-hero {
    padding: 10px 22px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    white-space: nowrap;
}

.btn-hero.primary {
    background: #2d3748;
    color: white;
}

.btn-hero.primary:hover {
    background: #1a202c;
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.btn-hero.secondary {
    background: white;
    color: #2d3748;
    border: 2px solid #e2e8f0;
}

.btn-hero.secondary:hover {
    border-color: #2d3748;
    transform: translateY(-3px);
}

.hero-image i {
    font-size: 180px;
    color: #cbd5e0;
}

.features {
    background: white;
    padding: 4rem 5%;
    text-align: center;
}

.features h2 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: #1a202c;
}

.features-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: #f7fafc;
    padding: 1.8rem;
    border-radius: 16px;
    transition: all 0.3s;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.05);
}

.feature-card i {
    font-size: 2.5rem;
    color: #4a5568;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: #2d3748;
}

.feature-card p {
    color: #718096;
    font-size: 0.9rem;
}

.cta {
    text-align: center;
    padding: 4rem 5%;
    background: linear-gradient(135deg, #edf2f7 0%, #ffffff 100%);
}

.cta h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.cta p {
    color: #718096;
    margin-bottom: 1.5rem;
}

.btn-hero.large {
    padding: 12px 28px;
    font-size: 1rem;
}

.landing-footer {
    text-align: center;
    padding: 1.5rem;
    color: #a0aec0;
    border-top: 1px solid #e2e8f0;
    font-size: 0.85rem;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 15px;
}

.navbar {
    background: white;
    border-radius: 16px;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    flex-wrap: wrap;
    gap: 0.8rem;
}

.navbar h2 {
    color: #2d3748;
    font-size: 1.2rem;
    margin: 0;
    display: flex;
    align-items: center;
}

.navbar h2 i {
    color: #4a5568;
    margin-right: 8px;
    font-size: 1.1rem;
}

.navbar > div {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.navbar a {
    color: #4a5568;
    text-decoration: none;
    padding: 6px 12px;
    border-radius: 8px;
    transition: all 0.3s;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.navbar a i {
    font-size: 0.85rem;
}

.navbar a:hover {
    background: #f7fafc;
}

.card {
    background: white;
    border-radius: 20px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    border: 1px solid #edf2f7;
}

.card h2 {
    color: #2d3748;
    margin-bottom: 1.2rem;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.filters {
    display: flex;
    gap: 10px;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.btn {
    padding: 8px 16px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    border: none;
    cursor: pointer;
    font-size: 0.85rem;
}

.btn-primary {
    background: #2d3748;
    color: white;
}

.btn-primary:hover {
    background: #1a202c;
    transform: translateY(-2px);
}

.btn-success {
    background: #48bb78;
    color: white;
}

.btn-success:hover {
    background: #38a169;
    transform: translateY(-2px);
}

.btn-warning {
    background: #ed8936;
    color: white;
}

.btn-warning:hover {
    background: #dd6b20;
    transform: translateY(-2px);
}

.btn-danger {
    background: #f56565;
    color: white;
}

.btn-danger:hover {
    background: #e53e3e;
    transform: translateY(-2px);
}

.btn-outline {
    background: white;
    color: #4a5568;
    border: 1px solid #e2e8f0;
}

.btn-outline:hover {
    background: #f7fafc;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th {
    text-align: left;
    padding: 0.8rem;
    background: #f7fafc;
    color: #4a5568;
    font-weight: 600;
    border-bottom: 2px solid #e2e8f0;
    font-size: 0.85rem;
}

td {
    padding: 0.8rem;
    border-bottom: 1px solid #edf2f7;
    font-size: 0.85rem;
}

tr:hover {
    background: #fafbfc;
}

.status-pending {
    color: #ed8936;
    font-weight: 500;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.status-completed {
    color: #48bb78;
    font-weight: 500;
    text-decoration: line-through;
    font-size: 0.8rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.alert {
    padding: 0.8rem;
    border-radius: 12px;
    margin-bottom: 1.2rem;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.alert-success {
    background: #c6f6d5;
    color: #22543d;
    border: 1px solid #9ae6b4;
}

.alert-error {
    background: #fed7d7;
    color: #742a2a;
    border: 1px solid #fc8181;
}

input, textarea, select {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    font-size: 0.9rem;
    margin: 8px 0 16px 0;
    transition: all 0.3s;
    font-family: inherit;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: #a0aec0;
    box-shadow: 0 0 0 3px rgba(160,174,192,0.1);
}

label {
    font-weight: 500;
    color: #4a5568;
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 4px;
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .landing-nav {
        flex-direction: column;
        text-align: center;
        padding: 1rem;
    }
    
    .nav-brand {
        justify-content: center;
        width: 100%;
    }
    
    .nav-links {
        justify-content: center;
        width: 100%;
    }
    
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 2rem 1.5rem;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-image i {
        font-size: 120px;
    }
    
    .features h2 {
        font-size: 1.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .cta h2 {
        font-size: 1.5rem;
    }
    
    .navbar {
        flex-direction: column;
        text-align: center;
    }
    
    .navbar h2 {
        justify-content: center;
        width: 100%;
    }
    
    .navbar > div {
        justify-content: center;
        width: 100%;
    }
    
    .filters {
        justify-content: center;
    }
    
    table, thead, tbody, th, td, tr {
        display: block;
    }
    
    th {
        display: none;
    }
    
    td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.75rem;
        gap: 10px;
        flex-wrap: wrap;
    }
    
    td:before {
        content: attr(data-label);
        font-weight: 600;
        color: #4a5568;
        min-width: 100px;
    }
    
    .btn {
        padding: 6px 12px;
        font-size: 0.75rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .container {
        padding: 10px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }
    
    .btn-hero {
        padding: 8px 16px;
        font-size: 0.8rem;
        white-space: normal;
    }
    
    .nav-btn {
        padding: 6px 14px;
        font-size: 0.8rem;
    }
    
    .nav-brand {
        font-size: 1.1rem;
    }
    
    .feature-card {
        padding: 1.2rem;
    }
    
    .feature-card i {
        font-size: 2rem;
    }
    
    .feature-card h3 {
        font-size: 1rem;
    }
    
    td {
        flex-direction: column;
        align-items: flex-start;
    }
    
    td:before {
        margin-bottom: 5px;
    }
    
    .navbar a {
        padding: 4px 10px;
        font-size: 0.75rem;
    }
}