:root {
    --white: #ffffff;
    --lightest: #f4f1de;
    --light: #eae2b7;
    --yellow: #fcbf49;
    --orange: #f77f00;
    --red: #d62828;
    --green: #28a745;
    --dark: #003049;
    --darkest: #0d1b2a;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--darkest);
    background: linear-gradient(135deg, var(--lightest) 0%, var(--light) 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    padding: 1rem 0;
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    text-decoration: none;
}

.logo a {
    text-decoration: none !important;
    color: inherit !important;
}

.logo a:hover {
    text-decoration: none !important;
    color: inherit !important;
}

.logo a:visited {
    color: inherit !important;
}

.logo a:active {
    color: inherit !important;
}

.brand-keto {
    color: var(--orange);
    font-weight: 700;
}

.brand-sistant {
    color: var(--dark);
    font-weight: 300;
    font-style: italic;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

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

.nav-links a:hover {
    color: var(--orange);
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
}

.btn-primary {
    background: var(--orange);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(247, 127, 0, 0.3);
}

.btn-primary:hover {
    background: var(--yellow);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(247, 127, 0, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--dark);
    border: 2px solid var(--dark);
}

.btn-secondary:hover {
    background: var(--dark);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-large {
    font-size: 1.2rem;
    padding: 1.2rem 2.5rem;
}

.btn.disabled {
    background: var(--light);
    color: var(--dark);
    cursor: not-allowed;
    pointer-events: none;
    box-shadow: none;
}

.checklist {
    list-style: none;
    padding: 0;
}

.checklist li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.checklist li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--green);
    font-weight: bold;
}

footer {
    background: var(--darkest);
    color: var(--light);
    text-align: center;
    padding: 2rem 0;
}

footer p {
    margin-bottom: 0.5rem;
}

footer a {
    color: var(--light);
    text-decoration: none;
    transition: color 0.3s;
}

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

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}