/* ===============================
   Global variables
================================ */
:root {
    --primary: #0b5ed7;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --bg-main: #ffffff;
    --bg-soft: #f8fafc;
    --border-soft: #e5e7eb;

    --font-serif: 'Lora', serif;
    --font-sans: 'Inter', sans-serif;
}

/* ===============================
   Base
================================ */
html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-serif);
    line-height: 1.7;
}

.container {
    max-width: 1040px;
    margin: 0 auto;
    padding: 2.5rem 1.75rem 4rem;
}

/* ===============================
   Typography
================================ */
h1, h2 {
    font-family: var(--font-sans);
    color: #111827;
}

h1.paper-title {
    font-size: 2.6rem;
    font-weight: 700;
    text-align: center;
    margin: 1.8rem 0 0.3rem;
}

h2 {
    font-size: 1.9rem;
    margin: 3.5rem 0 1.2rem;
    padding-bottom: 0.4rem;
    border-bottom: 1px solid var(--border-soft);
}

p {
    font-size: 1.05rem;
    margin-bottom: 1.1rem;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ===============================
   Header
================================ */
header {
    margin-bottom: 3.5rem;
}

.project-top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
    padding-bottom: 1.6rem;
    border-bottom: 1px solid var(--border-soft);
}

.project-name-main {
    font-family: var(--font-sans);
    font-size: 3.2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.35rem;
}

.project-acronym-explained {
    font-family: var(--font-sans);
    font-size: 1.02rem;
    color: var(--text-muted);
    max-width: 720px;
}

.project-acronym-explained b {
    color: #111827;
}

.project-logo {
    height: 68px;
    width: auto;
}

.conference {
    font-family: var(--font-sans);
    font-size: 1.15rem;
    color: var(--text-muted);
    text-align: center;
}

/* ===============================
   Links / Buttons
================================ */
.links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.links .button {
    font-family: var(--font-sans);
    font-weight: 600;
    padding: 0.55rem 1.4rem;
    border-radius: 999px;
    border: 1.8px solid var(--primary);
    color: var(--primary);
    transition: all 0.2s ease;
}

.links .button:hover {
    background: var(--primary);
    color: white;
}

/* ===============================
   Content
================================ */
section {
    margin-bottom: 3rem;
}

figure {
    margin: 2.5rem auto;
    text-align: center;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
}

figcaption {
    font-family: var(--font-sans);
    font-size: 0.92rem;
    color: var(--text-muted);
    margin-top: 0.8rem;
}

/* ===============================
   Code blocks
================================ */
pre {
    background: var(--bg-soft);
    border: 1px solid var(--border-soft);
    border-radius: 8px;
    padding: 1.4rem;
    overflow-x: auto;
    font-size: 0.92rem;
}

code {
    font-family: SFMono-Regular, Consolas, Menlo, monospace;
}

/* ===============================
   Footer
================================ */
footer {
    margin-top: 4.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-soft);
    text-align: center;
    font-size: 0.95rem;
    color: var(--text-muted);
}

/* ===============================
   Responsive
================================ */
@media (max-width: 900px) {
    .project-top-header {
        flex-direction: column-reverse;
        align-items: center;
        text-align: center;
    }

    .project-name-main {
        font-size: 2.7rem;
    }

    .project-logo {
        height: 60px;
    }
}