/* Declare CSS variables for colors, spacing, typography :contentReference[oaicite:15]{index=15} */
:root {
    /* Colors */
    --color-bg: #FFFFFF;
    --color-text: #333333;
    --color-accent: #00C5A6;
    --color-border: #E1E1E1;
    --color-grey-light: #F5F5F5;
    /* Typography */
    --font-family-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; /* fallback stack :contentReference[oaicite:16]{index=16} */
    --font-base: 1rem; /* 16px at root */
    /* Spacing & layout */
    --container-max-width: 1200px;
    --border-radius: 4px; /* standard rounding :contentReference[oaicite:17]{index=17} */
    --box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); /* subtle shadow :contentReference[oaicite:18]{index=18} */
}

/* Base & Responsive Font Sizing (rem units) :contentReference[oaicite:19]{index=19} */
html {
    font-size: 14px;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

/* Body & Containers */
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    background-color: var(--color-grey-light);
    font-family: var(--font-family-sans);
    color: var(--color-text);
}

.container {
    max-width: var(--container-max-width);
    padding-left: 1rem;
    padding-right: 1rem;
}

/* Header overrides */
header {
    background-color: var(--color-bg);
    box-shadow: var(--box-shadow);
}

/* Navbar links */
.nav-link {
    color: var(--color-text);
}

    .nav-link:hover {
        color: var(--color-accent);
        text-decoration: underline;
    }

/* Primary Button (Bootstrap override) :contentReference[oaicite:20]{index=20} */
.btn-primary {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    border-radius: var(--border-radius);
}

    .btn-primary:hover,
    .btn-primary:focus {
        background-color: darken(var(--color-accent), 10%);
        border-color: darken(var(--color-accent), 10%);
    }

/* Forms & Inputs */
.form-control {
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: 0.5rem 0.75rem;
}

    .form-control:focus {
        outline: none;
        box-shadow: 0 0 0 0.1rem var(--color-bg), 0 0 0 0.25rem var(--color-accent); /* custom focus :contentReference[oaicite:21]{index=21} */
    }

/* Card & Modal shadows */
.card,
.login-section {
    background-color: var(--color-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 1.5rem;
}

/* Footer */
footer {
    background-color: var(--color-bg);
    border-color: var(--color-border);
}

    footer a {
        color: var(--color-text);
    }

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

/* Primary button: match Owlet’s pill shape & spacing */
.btn-primary {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    border-radius: 1rem; /* 16px rounding for a pill shape :contentReference[oaicite:3]{index=3} */
    padding: 0.75rem 2rem; /* mirrors live button padding :contentReference[oaicite:4]{index=4} */
    font-size: 1rem; /* ensure legible text size */
    transition: background-color .15s; /* smooth hover transition */
}

    /* Hover & focus: hard-code a slightly darker shade */
    .btn-primary:hover,
    .btn-primary:focus {
        background-color: #00B597; /* darker accent for hover */
        border-color: #00B597;
        color: #ffffff; /* maintain text contrast */
    }