/* ==========================================================
   base.css — Global base styles
   Font-face, typography, links, focus styles, accessibility.
   Builds on variables.css and reset.css.
   ========================================================== */

/* --------------------------------------------------------
   Font-face — Inter (locally hosted)
   -------------------------------------------------------- */
@font-face {
    font-family: 'Inter';
    src: url('../assets/fonts/inter/inter-regular.woff2') format('woff2');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Inter';
    src: url('../assets/fonts/inter/inter-semibold.woff2') format('woff2');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

/* --------------------------------------------------------
   Body
   -------------------------------------------------------- */
body {
    font-family: var(--font-family);
    font-size: var(--font-size-body);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-body);
    color: var(--color-text);
    background-color: var(--color-white);
}

/* --------------------------------------------------------
   Headings
   -------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-heading);
    color: var(--color-text);
}

h1 {
    font-size: var(--font-size-h1);
}

h2 {
    font-size: var(--font-size-h2);
}

h3 {
    font-size: var(--font-size-h3);
}

/* --------------------------------------------------------
   Paragraphs
   -------------------------------------------------------- */
/* Limit paragraph width in prose/content areas only */
.section__content p {
    max-width: var(--text-max-width);
}

p + p {
    margin-top: var(--space-md);
}

/* --------------------------------------------------------
   Links
   -------------------------------------------------------- */
a {
    color: var(--color-primary);
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

a.btn:hover {
    text-decoration: none;
}

/* --------------------------------------------------------
   Focus styles (accessibility)
   Visible ring on all interactive elements.
   Only shown during keyboard navigation.
   -------------------------------------------------------- */
:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: 2px;
}

/* --------------------------------------------------------
   Selection
   -------------------------------------------------------- */
::selection {
    background-color: var(--color-primary-light);
    color: var(--color-text);
}

/* --------------------------------------------------------
   Secondary text
   -------------------------------------------------------- */
.text-secondary {
    color: var(--color-text-secondary);
}

.text-small {
    font-size: var(--font-size-small);
}

.noscript-notice {
    background: var(--color-warning-light);
    color: var(--color-warning);
    padding: 1rem;
    text-align: center;
    font-size: 0.875rem;
}

/* --------------------------------------------------------
   Scroll fade-in animation
   Controlled by scroll-effects.js.
   -------------------------------------------------------- */
.fade-in {
    opacity: 0;
    transform: translateY(1.5rem);
    transition: opacity 0.6s ease,
    transform 0.6s ease;
}

.fade-in--visible {
    opacity: 1;
    transform: translateY(0);
}

/* --------------------------------------------------------
   Skip-to-content (accessibility)
   Invisible until focused via Tab key.
   -------------------------------------------------------- */
.skip-to-content {
    position: absolute;
    top: -100%;
    left: var(--space-md);
    z-index: var(--z-modal);
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-primary);
    color: var(--color-white);
    font-size: var(--font-size-small);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--button-radius);
    transition: top var(--transition-fast);
}

.skip-to-content:focus {
    top: var(--space-md);
}