/* Color Scheme inspired by Omega Harbor Marine */
:root {
    --primary-teal: #00A0B0;
    --secondary-teal: #0099A8;
    --dark-teal: #007A87;
    --accent-yellow: #FFC107;
    --light-bg: #F5F5F5;
    --white: #FFFFFF;
    --text-dark: #333333;
    --text-light: #666666;
}

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

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

/* Navigation Bar */
.navbar {
    background-color: var(--primary-teal);
    padding: 1rem 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.navbar-brand img.nb-light {
    height: 50px;
    width: auto;
}

.navbar-brand span {
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 600;
}

.nav-btn {
    margin: 0 0.5rem;
    padding: 0.5rem 1.5rem;
    border: 2px solid transparent;
    border-radius: 5px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-btn-services {
    border-color: #4A90E2;
    background-color: rgba(74, 144, 226, 0.2);
}

.nav-btn-client {
    border-color: var(--accent-yellow);
    background-color: rgba(255, 193, 7, 0.2);
}

.nav-btn-contact {
    border-color: #9B59B6;
    background-color: rgba(155, 89, 182, 0.2);
}

.nav-btn-tools {
    border-color: #2ECC71;
    background-color: rgba(46, 204, 113, 0.2);
}

.nav-btn.active {
    background-color: rgba(255, 255, 255, 0.3);
    font-weight: 600;
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-teal) 0%, var(--dark-teal) 100%);
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><defs><linearGradient id="grad" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" style="stop-color:%2300A0B0;stop-opacity:1" /><stop offset="100%" style="stop-color:%23007A87;stop-opacity:1" /></linearGradient></defs><rect fill="url(%23grad)" width="1200" height="600"/><path fill="rgba(255,255,255,0.05)" d="M0,300 Q300,200 600,300 T1200,300 L1200,600 L0,600 Z"/><path fill="rgba(255,255,255,0.03)" d="M0,400 Q300,350 600,400 T1200,400 L1200,600 L0,600 Z"/></svg>');
    background-size: cover;
    background-position: center;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.hero-overlay {
    background: rgba(0, 0, 0, 0.3);
    width: 100%;
    padding: 4rem 2rem;
    text-align: center;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    animation: fadeInDown 1s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--white);
    font-weight: 300;
    max-width: 800px;
    margin: 0 auto;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 1s ease;
}

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

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

/* Calculator Section */
.calculator-section {
    background-color: var(--light-bg);
}

.card {
    border: none;
    border-radius: 10px;
    overflow: hidden;
}

.card-header {
    background: linear-gradient(135deg, var(--primary-teal) 0%, var(--dark-teal) 100%);
    padding: 1.5rem;
}

.card-header h3 {
    font-weight: 600;
}

.form-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.form-control, .form-select {
    border: 2px solid #ddd;
    border-radius: 5px;
    padding: 0.75rem;
    transition: all 0.3s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-teal);
    box-shadow: 0 0 0 0.2rem rgba(0, 160, 176, 0.25);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-teal) 0%, var(--dark-teal) 100%);
    border: none;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 160, 176, 0.4);
}

.btn-secondary {
    background-color: #6c757d;
    border: none;
    padding: 0.75rem;
    font-weight: 600;
}

/* Results Section */
.result-box {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    margin-bottom: 1rem;
    border: 2px solid var(--primary-teal);
}

.result-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-teal);
    margin-bottom: 0.5rem;
}

.result-label {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: 500;
    margin: 0;
}

/* Information Cards */
.info-card {
    border-left: 5px solid var(--primary-teal);
    transition: all 0.3s ease;
}

.info-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.info-card .card-title {
    color: var(--primary-teal);
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Resource Cards */
.resource-card {
    border-top: 5px solid var(--accent-yellow);
    transition: all 0.3s ease;
}

.resource-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.resource-card .card-title {
    color: var(--dark-teal);
    font-weight: 600;
    margin-bottom: 1rem;
}

/* Table Styling */
.table-responsive {
    border-radius: 10px;
    overflow: hidden;
}

.table {
    margin-bottom: 0;
}

.table-dark {
    background-color: var(--dark-teal);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 160, 176, 0.05);
}

.table-hover tbody tr:hover {
    background-color: rgba(0, 160, 176, 0.1);
}

/* Footer */
.footer {
    background: linear-gradient(135deg, var(--dark-teal) 0%, var(--primary-teal) 100%);
    color: var(--white);
    padding: 2rem 0;
}

.footer p {
    margin: 0.25rem 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .result-value {
        font-size: 2rem;
    }

    .navbar {
        padding: 1rem;
    }

    .brand-text {
        font-size: 1rem;
    }

    .omega-symbol {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }
}

/* Alert Styling */
.alert-info {
    background-color: rgba(0, 160, 176, 0.1);
    border-color: var(--primary-teal);
    color: var(--text-dark);
}

.alert-warning {
    background-color: rgba(255, 193, 7, 0.1);
    border-color: var(--accent-yellow);
    color: var(--text-dark);
}

/* Card Header Variants */
.bg-primary {
    background: linear-gradient(135deg, var(--primary-teal) 0%, var(--dark-teal) 100%) !important;
}

.bg-success {
    background: linear-gradient(135deg, #28a745 0%, #218838 100%) !important;
}

.bg-info {
    background: linear-gradient(135deg, #17a2b8 0%, #138496 100%) !important;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading Animation */
.loading {
    opacity: 0.6;
    pointer-events: none;
}