:root {
    --primary: #0BCEAF;
    --primary-dark: #09aa90;
    --dark: #0E2E50;
    --dark-bg: #1a1a1a;
    --dark-surface: #2d2d2d;
    --dark-text: #e0e0e0;
    --gray: #6c757d;
    --light-gray: #f8f9fa;
    --white: #ffffff;
    --font-family-sans-serif: "Inter", sans-serif;
    
    --bg-color: var(--white);
    --text-color: var(--dark);
    --surface-color: var(--white);
    --border-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
}

body.dark-mode {
    --bg-color: var(--dark-bg);
    --text-color: var(--dark-text);
    --surface-color: var(--dark-surface);
    --border-color: #404040;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    font-family: sans-serif;
    line-height: 1.15;
}

body {
    margin: 0;
    padding-top: 85px;
    font-family: var(--font-family-sans-serif);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6, .display-4, .lead {
    margin-top: 0;
    margin-bottom: .5rem;
    font-family: var(--font-family-sans-serif);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-color);
}

.lead {
    font-weight: 400;
}

p {
    margin-top: 0;
    margin-bottom: 1rem;
}

a {
    color: var(--primary);
    text-decoration: none;
    background-color: transparent;
}

a:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.container-fluid {
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
    margin-right: auto;
    margin-left: auto;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: -15px;
    margin-left: -15px;
}

.col-lg-5, .col-lg-7 {
    position: relative;
    width: 100%;
    padding-right: 15px;
    padding-left: 15px;
}

@media (min-width: 992px) {
    .col-lg-5 {
        flex: 0 0 41.66667%;
        max-width: 41.66667%;
    }
    .col-lg-7 {
        flex: 0 0 58.33333%;
        max-width: 58.33333%;
    }
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 999;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: .5rem 1.5rem;
    background-color: var(--surface-color);
    box-shadow: 0 .125rem .25rem var(--shadow-color);
    transition: background-color 0.3s ease;
}

.navbar .navbar-brand img {
    height: 70px;
}

.navbar .nav-link {
    color: var(--text-color);
    font-weight: 500;
    text-decoration: none;
    transition: color 0.3s;
}

.navbar .nav-link:hover {
    color: var(--primary);
}

.footer {
    text-align: center;
    padding: 20px;
    margin-top: 40px;
    color: var(--gray);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
    background-color: var(--surface-color);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.img-fluid {
    max-width: 100%;
    height: auto;
}

.text-center {
    text-align: center !important;
}

.shadow-sm { box-shadow: 0 .125rem .25rem var(--shadow-color)!important; }
.rounded-circle { border-radius: 50%!important; }
.d-flex { display: flex!important; }
.d-inline { display: inline!important; }
.align-items-center { align-items: center!important; }
.justify-content-center { justify-content: center!important; }

@media (min-width: 992px) {
    .justify-content-lg-start { justify-content: flex-start!important; }
    .text-lg-left { text-align: left!important; }
}

.text-uppercase { text-transform: uppercase!important; }
.font-weight-normal { font-weight: 400!important; }
.font-weight-lighter { font-weight: lighter!important; }

.d-none { display: none!important; }
@media (min-width: 576px) { .d-sm-block { display: block!important; } }

.m-0 { margin: 0!important; }
.mb-2 { margin-bottom: .5rem!important; }
.mb-3 { margin-bottom: 1rem!important; }
.mb-5 { margin-bottom: 3rem!important; }
.ml-4 { margin-left: 1.5rem!important; }
.py-3 { padding-top: 1rem!important; padding-bottom: 1rem!important; }
.py-5 { padding-top: 3rem!important; padding-bottom: 3rem!important; }
.pt-5 { padding-top: 3rem!important; }
.pb-5 { padding-bottom: .5rem!important; }
.px-5 { padding-right: 3rem!important; padding-left: 3rem!important; }

@media (min-width: 992px) {
    .pl-lg-0 { padding-left: 0!important; }
    .pb-lg-0 { padding-bottom: 0!important; }
    .py-lg-0 { padding-top: 0!important; padding-bottom: 0!important; }
    .px-lg-3 { padding-right: 1rem!important; padding-left: 1rem!important; }
    .px-lg-5 { padding-right: 3rem!important; padding-left: 3rem!important; }
}

.display-3 { font-size: 3.5rem; font-weight: 300; line-height: 1.2; }
.display-4 { font-size: 2.5rem; font-weight: 300; line-height: 1.2; }
.display-5 { font-size: 2.5rem; font-weight: 300; line-height: 1.2; }