/* ═══════════════════════════════════════════════
   AIRAS @ SAC 2027 — Stylesheet
   Design language: Anthropic editorial + academic clarity
   ═══════════════════════════════════════════════ */

/* ── Variables ── */
:root {
    --color-bg: #fafaf8;
    --color-surface: #ffffff;
    --color-text: #1a1a1a;
    --color-text-secondary: #000000;
    --color-accent: #1e3a8a;
    --color-accent-hover: #172554;
    --color-accent-light: #f1f1ef;
    --color-rule: #000000;
    --color-rule-accent: #000000;

    --font-heading: 'Source Serif 4', Georgia, serif;
    --font-body: 'Source Sans 3', 'Segoe UI', sans-serif;

    --content-width: 720px;
    --page-pad: 2rem;
}

/* ── Reset ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    font-size: 17px;
    line-height: 1.75;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color .15s ease;
}

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

/* ── Typography ── */
h1 {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: clamp(1.4rem, 3.2vw, 2.0rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

h2 {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.65rem;
    color: var(--color-text);
    margin-bottom: 0.8rem;
}

h2::after {
    content: "";
    display: block;
    width: 3rem;
    height: 3px;
    background: var(--color-accent);
    margin-top: 0.25rem;
    border-radius: 999px;
}

h3 {
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: 0.35rem;
}

p,
li,
td,
a,
button,
blockquote {
    font-size: 1rem;
}

p {
    margin-bottom: 1.25rem;
}

p:last-child {
    margin-bottom: 0;
}

strong {
    font-weight: 600;
}

/* ──────────────────────────────────────────────
   NAVIGATION
   ────────────────────────────────────────────── */
#top-nav {
    position: sticky;
    top: 0;
    z-index: 500;
    background: rgba(250, 250, 248, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-rule);
}

.nav-inner {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 var(--page-pad);
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    color: var(--color-accent);
    text-decoration: none;
    transition: color .15s;
}

.nav-links a:hover {
    color: var(--color-accent-hover);
    text-decoration: none;
}

.nav-cta {
    background: var(--color-accent);
    color: #fff !important;
    padding: 0.35rem 0.9rem;
    border-radius: 6px;
}

.nav-cta:hover {
    background: var(--color-accent-hover);
    opacity: 1;
    text-decoration: none !important;
}

/* Hamburger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: transform .25s, opacity .25s;
}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ──────────────────────────────────────────────
   PAGE WRAPPER
   ────────────────────────────────────────────── */
.page-wrapper {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 var(--page-pad);
}

/* ──────────────────────────────────────────────
   HERO
   ────────────────────────────────────────────── */
.hero {
    padding: 2rem 0 1rem;
}

.home-hero {
    padding-top: 4rem;
}

.hero-label {
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-secondary);
    margin-bottom: 0.8rem;
}

.hero h1 {
    margin-bottom: 1rem;
}

.hero-tagline {
    color: var(--color-text);
    font-family: var(--font-heading);
    font-style: italic;
    font-size: 1.18rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 1.25rem;
}

.hero-intro {
    margin-bottom: 1.4rem;
}

.hero-sub {
    color: var(--color-text-secondary);
    line-height: 1.6;
    max-width: 600px;
    margin-bottom: 1rem;
}

.hero-meta {
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.hero-meta .dot {
    font-weight: 700;
    color: var(--color-rule);
}

/* ──────────────────────────────────────────────
   SECTIONS
   ────────────────────────────────────────────── */
.section {
    padding: 1rem 0 1.5rem;
}

.section-rule {
    display: none;
}

/* Scope gray box with vertical bar */
.pull-quote {
    border-left: 5px solid #000000;
    background: var(--color-accent-light);
    padding: 1rem 1.15rem;
    margin: 1.2rem 0;
    border-radius: 4px;
    font-family: var(--font-heading);
    line-height: 1.6;
    color: var(--color-text);
}

.pull-quote strong {
    color: var(--color-text);
}

/* ──────────────────────────────────────────────
   TOPICS LIST
   ────────────────────────────────────────────── */
.topics-list {
    list-style-type: disc;
    padding-left: 1.5rem;
    margin-top: 0.7rem;
}

.topics-list li {
    margin-bottom: 0.28rem;
    line-height: 1.48;
    color: var(--color-text);
}

.topics-list li strong {
    font-weight: 600;
    color: var(--color-text);
}

.submission-list {
    padding-left: 1.5rem;
    margin-top: 0.9rem;
}

.submission-list li {
    margin-bottom: 1rem;
    line-height: 1.72;
}

.submission-list li strong {
    font-weight: 600;
}

.portal-list {
    list-style-type: disc;
    padding-left: 1.5rem;
    margin-top: 0.7rem;
}

.portal-list li {
    margin-bottom: 0.28rem;
    line-height: 1.48;
    color: var(--color-text);
}

.submission-heading {
    margin: 2rem 0 0.85rem;
    font-size: 1.3rem;
    font-weight: 700;
    scroll-margin-top: 80px;
}

.year-list {
    padding-left: 1.5rem;
    margin-top: 0.7rem;
}

.year-list li {
    margin-bottom: 0.35rem;
}

/* ──────────────────────────────────────────────
   DATES LIST
   ────────────────────────────────────────────── */
.dates-list {
    list-style: disc;
    padding-left: 1.5rem;
    margin-top: 0.8rem;
    margin-bottom: 1.2rem;
}

.dates-list li {
    padding: 0.18rem 0;
    font-weight: 400;
    line-height: 1.55;
}

.dates-list li strong {
    color: #902c2c; /* Soft, readable warm maroon/red */
}

.date-label {
    font-weight: 400;
    padding-right: 1.2rem;
    white-space: nowrap;
}

.date-value {
    text-align: left;
    white-space: nowrap;
    font-weight: 400;
}

.tbd {
    display: inline;
    font-family: var(--font-body);
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    background: transparent;
    color: var(--color-text-secondary);
    padding: 0;
    border-radius: 0;
}

.dates-note {
    color: var(--color-text-secondary);
}

/* ──────────────────────────────────────────────
   COMMITTEE
   ────────────────────────────────────────────── */
.committee-list {
    padding-left: 1.5rem;
    margin-top: 1rem;
}

.committee-list li {
    margin-bottom: 0.75rem;
    line-height: 1.55;
}

.committee-list p {
    margin-bottom: 0;
}

.committee-list a {
    font-weight: 600;
    text-decoration: underline;
}

/* ──────────────────────────────────────────────
   FOOTER
   ────────────────────────────────────────────── */
.site-footer {
    margin-top: 1.5rem;
    border-top: 1px solid var(--color-rule);
    background: var(--color-bg);
}

.footer-inner {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 1.5rem var(--page-pad) 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-inner p {
    color: var(--color-text-secondary);
    margin-bottom: 0;
}

.footer-inner a {
    font-weight: 500;
}

/* ──────────────────────────────────────────────
   RESPONSIVE
   ────────────────────────────────────────────── */
@media (max-width: 700px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-rule);
        flex-direction: column;
        padding: 1.5rem var(--page-pad);
        gap: 1rem;
    }

    .nav-links.open {
        display: flex;
    }

    .hero {
        padding: 3rem 0 2.5rem;
    }

    .topics-list {
        padding-left: 1rem;
    }

    .dates-list {
        width: 100%;
    }

    .date-label {
        white-space: normal;
        padding-right: 1rem;
    }

    .footer-inner {
        flex-direction: column;
    }

}