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

html {
    scroll-behavior: smooth;
    max-width: 100%;
    overflow-x: clip;
}


body {
    font-family: var(--font-family-base);
    background: var(--body-bg);
    color: var(--text);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    font-size: var(--font-size-md);
    line-height: var(--line-height-normal);
    max-width: 100%;
    overflow-x: hidden;
}

body.theme-transitioning,
body.theme-transitioning * {
    transition-property: background, background-color, color, border-color, box-shadow, fill, stroke;
    transition-duration: 280ms;
    transition-timing-function: cubic-bezier(0.22, 1, 0.36, 1);
}

body.theme-transitioning .nav-links,
body.theme-transitioning .nav-links *,
body.theme-transitioning .nav-toggle,
body.theme-transitioning .nav-toggle * {
    transition: none !important;
}

@media (prefers-reduced-motion: reduce) {

    body.theme-transitioning,
    body.theme-transitioning * {
        transition: none !important;
    }
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--focus-ring);
    outline-offset: var(--focus-ring-offset);
}

input::placeholder,
textarea::placeholder {
    color: var(--text-muted);
    opacity: 0.85;
}

input:focus::placeholder,
textarea:focus::placeholder {
    opacity: 0;
}

input,
textarea {
    caret-color: currentColor;
}

.app-shell {
    max-width: var(--layout-content-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding) var(--space-9);
}

@media (max-width: 1100px) {
    .app-shell {
        max-width: 100%;
        padding-inline: clamp(14px, 3.2vw, 20px);
    }
}

@media (max-width: 480px) {
    .app-shell {
        padding-inline: 12px;
    }
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    letter-spacing: -0.01em;
}

/* Global guardrails against mobile panel clipping */
.app-shell,
main,
.hero,
.hero-main,
.main-panels,
.panel,
.result-panels,
.result-panel,
.decision-panel,
.decision-column,
.cost-hero,
.objective-panel,
.panel-calculator,
.panel-objective,
.compare-groups,
.compare-groups-column,
.group-row,
.group-values,
.group-value {
    min-width: 0;
}

@media (max-width: 900px) {
    .panel,
    .hero-main,
    .result-panels,
    .result-panel,
    .decision-panel,
    .objective-panel,
    .panel-calculator,
    .panel-objective {
        width: 100%;
        max-width: 100%;
    }
}

/* Hide chrome when page is embedded in an iframe preview */
html.is-embedded header,
html.is-embedded .site-footer,
html.is-embedded footer {
    display: none !important;
}

html.is-embedded body {
    background: var(--bg) !important;
}

html.is-embedded .app-shell {
    padding-top: 0 !important;
}