/* =========================================================
   Theme variables
   ========================================================= */
:root{
    --bg: #f7f4ee;          /* warm parchment */
    --card: #ffffff;
    --text: #1f2937;        /* near-black */
    --muted: #6b7280;       /* gray */
    --border: #e6dcc8;      /* soft tan */
    --accent: #6b3f1d;      /* warm brown */
    --accent2:#8b5e34;      /* lighter brown */
    --linkbg:#fbf7ef;
    --shadow: 0 8px 22px rgba(0,0,0,.07);
    --radius: 14px;

    /* Recommended papers */
    --rec-bg: #fff7dc;      /* soft highlight */
    --rec-border: #e6c970;  /* gold-ish border */
    --rec-accent: #7a4b00;  /* deeper accent */
}

/* =========================================================
   Global reset & base
   ========================================================= */
*{
    box-sizing: border-box;
}

body{
    margin: 0;
    font-family: "Segoe UI", Tahoma, Arial, Helvetica, sans-serif;
    color: var(--text);
    background: radial-gradient(
        1200px 600px at 20% 0%,
        #ffffff 0%,
        var(--bg) 55%,
        #f3efe6 100%
    );
    line-height: 1.55;
}

/* =========================================================
   Page layout
   ========================================================= */
.page{
    max-width: 980px;
    margin: 0 auto;
    padding: 28px 18px 42px;
}

/* =========================================================
   Header
   ========================================================= */
header{
    background: linear-gradient(135deg, #ffffff 0%, #faf6ee 100%);
    border: 1px solid var(--border);
    border-left: 6px solid var(--accent);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 18px 18px 14px;
    margin-bottom: 18px;
}

header h1{
    font-size: 1.35rem;
    margin: 0 0 6px;
    letter-spacing: 0.2px;
}

header .subtitle{
    margin: 0;
    color: var(--muted);
    font-size: 0.98rem;
}

.summary{
    margin-top: 14px;
    padding: 12px 14px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 12px;
}

/* =========================================================
   Metadata pills
   ========================================================= */
.meta{
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
    color: var(--muted);
    font-size: 0.92rem;
}

.pill{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 999px;
    white-space: nowrap;
}

.dot{
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent2);
    display: inline-block;
}

/* =========================================================
   Main container
   ========================================================= */
main{
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.section-title{
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(180deg, #ffffff 0%, #fbf7ef 100%);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.section-title h2{
    margin: 0;
    font-size: 1.05rem;
    letter-spacing: 0.2px;
}

.hint{
    margin: 0;
    color: var(--muted);
    font-size: 0.9rem;
}

/* =========================================================
   Paper list
   ========================================================= */
.paper-list{
    list-style: none;
    margin: 0;
    padding: 0;
}

.paper{
    padding: 14px 16px;
    border-top: 1px solid var(--border);
}

.paper:first-child{
    border-top: 0;
}

.paper a{
    display: block;
    text-decoration: none;
    color: var(--text);
    background: var(--linkbg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 12px;
    transition:
        transform 0.08s ease,
        border-color 0.12s ease,
        background-color 0.12s ease;
}

.paper a:hover{
    transform: translateY(-1px);
    border-color: #d6c6aa;
    background: #fffdf8;
}

.paper a:focus{
    outline: 3px solid rgba(107,63,29,0.25);
    outline-offset: 2px;
}

/* =========================================================
   Paper meta chips
   ========================================================= */
.paper-meta{
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 8px;
    color: var(--muted);
    font-size: 0.9rem;
}

.paper-meta span{
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border: 1px dashed #decfb6;
    border-radius: 999px;
    background: #ffffff;
}

.paper-title{
    display: block;
    line-height: 1.45;
}

/* =========================================================
   Recommended papers
   ========================================================= */
.paper.recommended a{
    background: linear-gradient(180deg, var(--rec-bg) 0%, #fffdf3 100%);
    border-color: var(--rec-border);
    position: relative;
    padding-left: 14px;
    display: block;
}

/* Left accent bar */
.paper.recommended a::before{
    content: "";
    position: absolute;
    left: 0;
    top: 10px;
    bottom: 10px;
    width: 5px;
    border-radius: 10px;
    background: var(--rec-accent);
}

/* Recommended badge */
.paper.recommended .rec-badge{
	display: inline-block;
	margin-bottom: 6px;
	font-size: .78rem;
	font-weight: 700;
	color: var(--rec-accent);
	background: #ffffff;
	border: 1px solid var(--rec-border);
	border-radius: 999px;
	padding: 3px 9px;
	letter-spacing: .2px;
    line-height: 1;
}

.paper.recommended .paper-meta span{
	border-color: rgba(230,201,112,.8);
}	
	
.paper.recommended a:hover{
	border-color: #d7b857;
	background: #fffdf1;
}	
	
footer{
	margin-top: 14px;
	color: var(--muted);
	font-size: .9rem;
	text-align: center;
}	

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce){
	.paper a{ transition: none; }
	.paper a:hover{ transform: none; }
}