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

:root {
    --bg: #0a0c10;
    --bg2: #0f1117;
    --surface: #141720;
    --surface2: #1a1e2a;
    --surface3: #1f2433;
    --border: #252a38;
    --border2: #2e3448;
    --border3: #3a4060;
    --gold: #c9a84c;
    --gold2: #e8c870;
    --gold-dim: rgba(201,168,76,0.12);
    --gold-dim2: rgba(201,168,76,0.06);
    --text: #e8eaf0;
    --text2: #9aa0b8;
    --text3: #5a6080;
    --text4: #363c55;
    --green: #4caf82;
    --green-bg: rgba(76,175,130,0.1);
    --red: #e05555;
    --red-bg: rgba(224,85,85,0.1);
    --blue: #5b8de8;
    --blue-bg: rgba(91,141,232,0.1);
    --radius: 10px;
    --shadow: 0 4px 24px rgba(0,0,0,0.4);
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Karla', sans-serif;
    min-height: 100vh;
    padding-bottom: 100px;
}

/* ── HEADER ── */
header {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 20px 48px;
    display: flex;
    align-items: center;
    gap: 18px;
    position: sticky;
    top: 0;
    z-index: 50;
}
.header-icon {
    width: 40px; height: 40px;
    background: var(--gold-dim);
    border: 1px solid rgba(201,168,76,0.3);
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    font-size: 18px;
}
.header-text h1 {
    font-family: 'Playfair Display', serif;
    font-size: 20px; font-weight: 700; letter-spacing: -0.3px; color: var(--text);
}
.header-text h1 span { color: var(--gold); font-style: italic; }
.header-text p { font-size: 12px; color: var(--text3); margin-top: 2px; letter-spacing: 0.3px; }
.header-style-wrap { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.header-style-label { font-size: 11px; color: var(--text3); letter-spacing: 0.5px; text-transform: uppercase; }
/* Theme toggle button in header */
.theme-toggle {
    margin-left: auto;                /* pushes it and style-wrap to the right */
    margin-right: 12px;              /* gap between toggle and style selector */
    background: none;
    border: 1px solid var(--border2);
    border-radius: 20px;
    padding: 6px 12px;
    font-size: 13px;
    color: var(--text2);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: border-color 0.15s, color 0.15s;
    white-space: nowrap;
}
.theme-toggle:hover {
    border-color: var(--gold);
    color: var(--gold);
}
.theme-toggle .theme-icon {
    font-size: 14px;
}
.theme-toggle .theme-label {
    font-weight: 600;
}

/* Adjust style wrap to not have its own margin-left: auto anymore */
.header-style-wrap {
    margin-left: 0;   /* override any previous auto if needed */
}
.style-select {
    appearance: none; background: var(--surface); border: 1px solid var(--border3);
    border-radius: 8px; color: var(--gold); font-family: 'Karla', sans-serif;
    font-size: 13px; font-weight: 700; padding: 8px 32px 8px 14px; cursor: pointer; outline: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23c9a84c' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 10px center; min-width: 130px;
    transition: border-color 0.15s;
}
.style-select:hover { border-color: var(--gold); }

/* ── NAV TABS ── */
.nav-tabs {
    background: var(--bg2);
    border-bottom: 1px solid var(--border);
    padding: 0 48px;
    display: flex;
    gap: 0;
    position: sticky;
    top: 81px;
    z-index: 49;
}
.nav-tab {
    padding: 12px 20px;
    font-family: 'Karla', sans-serif;
    font-size: 12px;
    font-weight: 700;
    color: var(--text3);
    cursor: pointer;
    border: none;
    background: none;
    border-bottom: 2px solid transparent;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 7px;
}
.nav-tab:hover { color: var(--text2); }
.nav-tab.active { color: var(--gold); border-bottom-color: var(--gold); }
.nav-tab svg { width: 13px; height: 13px; }

/* ── MAIN PANELS ── */
.main-panel { display: none; }
.main-panel.active { display: block; }

/* ── LAYOUT ── */
.layout {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 0;
    max-width: 1300px;
    margin: 0 auto;
    padding: 36px 24px 0;
    align-items: start;
}
.panel-left {
    padding-right: 32px;
    position: sticky;
    top: 130px;
    max-height: calc(100vh - 150px);
    overflow-y: auto;
}
.panel-right { padding-left: 8px; }
.panel-title {
    font-family: 'Playfair Display', serif; font-size: 13px; font-weight: 600;
    color: var(--text3); letter-spacing: 2px; text-transform: uppercase; margin-bottom: 16px;
}

/* ── LOOKUP CARD ── */
.lookup-card {
    background: var(--surface); border: 1px solid var(--border2); border-radius: var(--radius);
    padding: 20px; margin-bottom: 16px; box-shadow: var(--shadow);
}
.lookup-title {
    font-size: 13px; font-weight: 700; color: var(--text2); margin-bottom: 14px;
    display: flex; align-items: center; gap: 8px;
}
.lookup-title svg { color: var(--gold); }
.lookup-tabs {
    display: flex; gap: 4px; margin-bottom: 14px; background: var(--bg);
    padding: 4px; border-radius: 8px;
}
.lookup-tab {
    flex: 1; padding: 7px 4px; background: transparent; border: none; border-radius: 6px;
    font-family: 'Karla', sans-serif; font-size: 11px; font-weight: 700; color: var(--text3);
    cursor: pointer; transition: all 0.15s; text-align: center; letter-spacing: 0.3px;
}
.lookup-tab.active { background: var(--surface2); color: var(--gold); border: 1px solid var(--border2); }
.lookup-tab:hover:not(.active) { color: var(--text2); }
.lookup-input-wrap { display: flex; gap: 8px; }
.lookup-input {
    flex: 1; background: var(--bg); border: 1px solid var(--border2); border-radius: 8px;
    padding: 10px 14px; font-family: 'Karla', sans-serif; font-size: 13px; color: var(--text);
    outline: none; transition: border-color 0.15s; font-weight: 500;
}
.lookup-input::placeholder { color: var(--text4); }
.lookup-input:focus { border-color: var(--gold); }
.btn-lookup {
    padding: 10px 16px; background: var(--gold); color: #0a0c10; border: none; border-radius: 8px;
    font-family: 'Karla', sans-serif; font-size: 12px; font-weight: 800; cursor: pointer;
    transition: background 0.15s, transform 0.1s; display: flex; align-items: center; gap: 6px;
    white-space: nowrap; letter-spacing: 0.3px;
}
.btn-lookup:hover { background: var(--gold2); transform: translateY(-1px); }
.btn-lookup:active { transform: none; }
.btn-lookup:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }
.lookup-status { margin-top: 8px; font-size: 11px; min-height: 16px; display: flex; align-items: center; gap: 6px; }
.lookup-status.loading { color: var(--gold); }
.lookup-status.success { color: var(--green); }
.lookup-status.error { color: var(--red); }

/* ── SOURCE FORM ── */
.source-form {
    background: var(--surface); border: 1px solid var(--border2); border-radius: var(--radius);
    padding: 20px; box-shadow: var(--shadow);
}
.form-header { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.source-type-select {
    flex: 1; appearance: none; background: var(--bg); border: 1px solid var(--border2);
    border-radius: 7px; color: var(--text); font-family: 'Karla', sans-serif; font-size: 12px;
    font-weight: 700; padding: 8px 28px 8px 12px; cursor: pointer; outline: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%235a6080' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 8px center; transition: border-color 0.15s;
    width: 100%;
}
.source-type-select:hover { border-color: var(--gold); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.form-grid .full { grid-column: 1 / -1; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-label { font-size: 10px; font-weight: 700; color: var(--text3); letter-spacing: 1px; text-transform: uppercase; }
.form-label .req { color: var(--gold); margin-left: 2px; }
.form-input, .form-textarea {
    background: var(--bg); border: 1px solid var(--border); border-radius: 7px; padding: 9px 12px;
    font-family: 'Karla', sans-serif; font-size: 13px; color: var(--text); outline: none;
    transition: border-color 0.15s; font-weight: 400; width: 100%;
}
.form-input::placeholder, .form-textarea::placeholder { color: var(--text4); }
.form-input:focus, .form-textarea:focus { border-color: var(--gold); }
.form-input.prefilled { border-color: rgba(76,175,130,0.4); background: rgba(76,175,130,0.04); }
.form-textarea { resize: vertical; min-height: 60px; line-height: 1.5; }
.authors-wrap { margin-top: 10px; }
.author-row { display: flex; gap: 6px; margin-bottom: 6px; align-items: center; }
.author-row .form-input { flex: 1; }
.btn-icon {
    width: 30px; height: 30px; background: var(--surface2); border: 1px solid var(--border2);
    border-radius: 6px; cursor: pointer; display: flex; align-items: center; justify-content: center;
    color: var(--text3); transition: all 0.15s; flex-shrink: 0;
}
.btn-icon:hover { border-color: var(--gold); color: var(--gold); }
.btn-icon.danger:hover { border-color: var(--red); color: var(--red); background: var(--red-bg); }
.btn-icon svg { width: 12px; height: 12px; }
.btn-add-author {
    font-size: 11px; color: var(--text3); background: none; border: 1px dashed var(--border2);
    border-radius: 6px; padding: 6px 12px; cursor: pointer; width: 100%;
    font-family: 'Karla', sans-serif; font-weight: 600; transition: all 0.15s; margin-top: 2px; letter-spacing: 0.3px;
}
.btn-add-author:hover { border-color: var(--gold); color: var(--gold); }
.form-actions { display: flex; gap: 8px; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--border); }
.btn {
    display: inline-flex; align-items: center; gap: 7px; padding: 10px 18px; border-radius: 8px;
    font-family: 'Karla', sans-serif; font-size: 13px; font-weight: 700; cursor: pointer; border: none;
    transition: all 0.15s; letter-spacing: 0.2px;
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn-primary { background: var(--gold); color: #0a0c10; flex: 1; justify-content: center; }
.btn-primary:hover:not(:disabled) { background: var(--gold2); transform: translateY(-1px); }
.btn-secondary { background: var(--surface2); color: var(--text2); border: 1px solid var(--border2); }
.btn-secondary:hover { border-color: var(--border3); color: var(--text); }

/* ── RIGHT PANEL ── */
.right-header { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.citations-count {
    font-size: 11px; background: var(--gold-dim); color: var(--gold);
    border: 1px solid rgba(201,168,76,0.2); padding: 3px 10px; border-radius: 20px; font-weight: 700;
}
.export-btns { margin-left: auto; display: flex; gap: 7px; flex-wrap: wrap; align-items: center; }
.btn-sm {
    display: inline-flex; align-items: center; gap: 6px; padding: 7px 14px; border-radius: 7px;
    font-family: 'Karla', sans-serif; font-size: 11px; font-weight: 700; cursor: pointer; border: none;
    transition: all 0.15s; letter-spacing: 0.3px;
}
.btn-sm:disabled { opacity: 0.3; cursor: not-allowed; }
.btn-sm:not(:disabled):hover { transform: translateY(-1px); }
.btn-sm-outline { background: var(--surface); border: 1px solid var(--border2); color: var(--text2); }
.btn-sm-outline:not(:disabled):hover { border-color: var(--gold); color: var(--gold); }
.sort-select {
    appearance: none; background: var(--surface); border: 1px solid var(--border);
    border-radius: 6px; color: var(--text2); font-family: 'Karla', sans-serif;
    font-size: 11px; font-weight: 600; padding: 5px 22px 5px 8px; cursor: pointer; outline: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='5'%3E%3Cpath d='M1 1l3 3 3-3' stroke='%235a6080' stroke-width='1.2' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 5px center;
    transition: border-color 0.15s;
}
.sort-select:hover { border-color: var(--gold); color: var(--text); }

/* ── CITATION CARDS ── */
.citation-list { display: flex; flex-direction: column; gap: 10px; }
.citation-card {
    background: var(--surface); border: 1px solid var(--border2); border-radius: var(--radius);
    padding: 18px 20px 18px 28px; box-shadow: var(--shadow); animation: fadeUp 0.2s ease;
    position: relative; overflow: hidden; transition: border-color 0.15s;
}
.citation-card:hover { border-color: var(--border3); }
@keyframes fadeUp { from { opacity:0; transform:translateY(8px); } to { opacity:1; transform:translateY(0); } }
.card-accent { position: absolute; top:0; left:0; right:0; height:2px; background: linear-gradient(90deg, var(--gold), transparent); }
.card-header { display:flex; align-items:flex-start; gap:12px; margin-bottom:12px; }
.card-type-badge { font-size:9px; font-weight:800; letter-spacing:1px; text-transform:uppercase; padding:3px 8px; border-radius:4px; flex-shrink:0; margin-top:1px; }
.badge-article { background:var(--blue-bg); color:var(--blue); border:1px solid rgba(91,141,232,0.2); }
.badge-book { background:var(--gold-dim); color:var(--gold); border:1px solid rgba(201,168,76,0.2); }
.badge-website { background:var(--green-bg); color:var(--green); border:1px solid rgba(76,175,130,0.2); }
.badge-other { background:var(--surface2); color:var(--text2); border:1px solid var(--border); }
.card-title-wrap { flex:1; min-width:0; }
.card-title { font-family:'Playfair Display',serif; font-size:14px; font-weight:600; line-height:1.4; color:var(--text); margin-bottom:3px; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.card-subtitle { font-size:11px; color:var(--text3); line-height:1.4; }
.card-actions { display:flex; gap:5px; flex-shrink:0; }

/* ── CITATION TEXT with hanging indent ── */
.citation-text-wrap {
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 14px 16px 14px 16px;
    position: relative;
}
/* The actual hanging-indent paragraph */
.citation-rendered {
    font-family: 'Karla', sans-serif;
    font-size: 13px;
    line-height: 1.8;
    color: var(--text2);
    font-weight: 400;
    /* Hanging indent: margin-left pushes the block right, text-indent pulls first line back */
    margin-left: 2em;
    text-indent: -2em;
    /* Wrapping and overflow control */
    word-break: break-word;
    overflow-wrap: break-word;
    max-width: 100%;
}

/* Ensure citation text wraps and container respects grid width */
.panel-right {
    min-width: 0;                /* allows grid column to shrink below content width */
    overflow-x: hidden;          /* prevents panel itself from scrolling horizontally */
}

.citation-card {
    min-width: 0;                /* allows card to shrink */
    overflow-x: hidden;          /* keeps overflow contained */
    word-break: break-word;      /* breaks long words if needed */
}

.citation-text-wrap {
    overflow-x: auto;            /* scroll within wrap if a single extremely long token appears */
    max-width: 100%;
}

/* Also apply to the paper modal content */
.paper-content {
    word-break: break-word;
    overflow-wrap: break-word;
}

/* For any extremely long unbroken strings (e.g., DOIs, URLs) */
.paper-modal {
    overflow-x: hidden;
    max-width: 100%;
}
.citation-rendered em { font-style: italic; color: var(--text); }
.citation-rendered strong { font-weight: 700; color: var(--text); }
/* For numbered styles (Vancouver, IEEE, ACS, AMA) the number is already part of the text */
.citation-rendered.numbered {
    margin-left: 2.5em;
    text-indent: -2.5em;
}

.copy-flash {
    position:absolute; top:8px; right:8px; background:var(--green); color:#0a0c10;
    font-size:10px; font-weight:800; padding:3px 8px; border-radius:4px; opacity:0;
    transition:opacity 0.2s; pointer-events:none;
}
.copy-flash.show { opacity:1; }
.card-footer { display:flex; align-items:center; gap:10px; margin-top:10px; flex-wrap:wrap; }
.meta-tag { font-size:10px; color:var(--text4); background:var(--surface2); padding:2px 8px; border-radius:4px; font-weight:600; letter-spacing:0.3px; }
.meta-tag.has-doi { color:var(--blue); background:var(--blue-bg); }
.empty-state { text-align:center; padding:80px 40px; color:var(--text4); }
.empty-state svg { opacity:0.3; margin-bottom:16px; }
.empty-state h3 { font-family:'Playfair Display',serif; font-size:18px; font-weight:600; color:var(--text3); margin-bottom:8px; }
.empty-state p { font-size:13px; line-height:1.6; }

/* ── COPY BUTTONS ROW ── */
.copy-btns-row {
    display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap;
}
.btn-copy-rich {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 6px 12px; border-radius: 6px;
    font-family: 'Karla', sans-serif; font-size: 11px; font-weight: 700;
    cursor: pointer; border: 1px solid var(--border2); background: var(--surface2);
    color: var(--text2); transition: all 0.15s; letter-spacing: 0.3px;
}
.btn-copy-rich:hover { border-color: var(--gold); color: var(--gold); }
.btn-copy-rich svg { width: 10px; height: 10px; flex-shrink: 0; }
.btn-copy-plain {
    display: inline-flex; align-items: center; gap: 5px;
    padding: 6px 12px; border-radius: 6px;
    font-family: 'Karla', sans-serif; font-size: 11px; font-weight: 700;
    cursor: pointer; border: 1px solid var(--border2); background: var(--surface2);
    color: var(--text3); transition: all 0.15s; letter-spacing: 0.3px;
}
.btn-copy-plain:hover { border-color: var(--border3); color: var(--text2); }
.btn-copy-plain svg { width: 10px; height: 10px; flex-shrink: 0; }

/* ── EXPORT MODAL ── */
.modal-overlay {
    position:fixed; inset:0; background:rgba(0,0,0,0.7); backdrop-filter:blur(4px); z-index:100;
    display:flex; align-items:center; justify-content:center; padding:20px;
    opacity:0; pointer-events:none; transition:opacity 0.2s;
}
.modal-overlay.open { opacity:1; pointer-events:all; }
.modal {
    background:var(--surface); border:1px solid var(--border2); border-radius:14px; padding:28px;
    width:100%; max-width:660px; box-shadow:0 24px 80px rgba(0,0,0,0.6);
    transform:translateY(10px); transition:transform 0.2s;
}
.modal-overlay.open .modal { transform:translateY(0); }
.modal h2 { font-family:'Playfair Display',serif; font-size:18px; font-weight:700; margin-bottom:6px; }
.modal p { font-size:13px; color:var(--text3); margin-bottom:20px; }
.modal-actions { display:flex; gap:8px; margin-top:20px; justify-content:flex-end; flex-wrap: wrap; }
.export-textarea {
    width:100%; background:var(--bg); border:1px solid var(--border2); border-radius:8px; padding:14px;
    font-family:'Karla',sans-serif; font-size:12px; color:var(--text2); line-height:1.8;
    resize:vertical; min-height:200px; outline:none;
}
.copy-note {
    font-size: 11px; color: var(--text3); background: var(--surface2); border: 1px solid var(--border);
    border-radius: 6px; padding: 8px 12px; margin-bottom: 12px; line-height: 1.5;
}
.copy-note strong { color: var(--gold); }

/* ── SHOWCASE PANEL ── */
.showcase-layout { max-width: 1200px; margin: 0 auto; padding: 36px 24px; }
.showcase-header { margin-bottom: 32px; }
.showcase-header h2 { font-family: 'Playfair Display', serif; font-size: 26px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.showcase-header p { font-size: 14px; color: var(--text3); line-height: 1.6; max-width: 700px; }
.style-cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 16px; }
.style-card { background: var(--surface); border: 1px solid var(--border2); border-radius: var(--radius); overflow: hidden; transition: border-color 0.2s, transform 0.15s; }
.style-card:hover { border-color: var(--border3); transform: translateY(-2px); }
.style-card-header { padding: 18px 20px 14px; border-bottom: 1px solid var(--border); display: flex; align-items: flex-start; gap: 14px; }
.style-badge { font-size: 11px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; padding: 5px 10px; border-radius: 6px; background: var(--gold-dim); color: var(--gold); border: 1px solid rgba(201,168,76,0.25); flex-shrink: 0; white-space: nowrap; }
.style-card-info { flex: 1; }
.style-card-info h3 { font-family: 'Playfair Display', serif; font-size: 15px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.style-card-info p { font-size: 11px; color: var(--text3); line-height: 1.5; }
.style-meta { padding: 12px 20px; display: flex; gap: 8px; flex-wrap: wrap; border-bottom: 1px solid var(--border); background: var(--bg2); }
.style-meta-tag { font-size: 10px; font-weight: 700; letter-spacing: 0.5px; text-transform: uppercase; color: var(--text3); background: var(--surface2); padding: 3px 8px; border-radius: 4px; border: 1px solid var(--border); }
.style-meta-tag.highlight { color: var(--blue); background: var(--blue-bg); border-color: rgba(91,141,232,0.2); }
.style-card-actions { padding: 14px 20px; display: flex; gap: 8px; }
.btn-show-example {
    flex: 1; padding: 9px 14px; background: var(--surface2); border: 1px solid var(--border2);
    border-radius: 7px; font-family: 'Karla', sans-serif; font-size: 12px; font-weight: 700;
    color: var(--text2); cursor: pointer; transition: all 0.15s;
    display: flex; align-items: center; justify-content: center; gap: 7px; letter-spacing: 0.3px;
}
.btn-show-example:hover { border-color: var(--gold); color: var(--gold); }

/* ── PAPER MODAL ── */
.paper-modal-overlay {
    position: fixed; inset: 0; background: rgba(0,0,0,0.85); backdrop-filter: blur(6px);
    z-index: 200; display: flex; align-items: flex-start; justify-content: center;
    padding: 40px 20px; overflow-y: auto;
    opacity: 0; pointer-events: none; transition: opacity 0.25s;
}
.paper-modal-overlay.open { opacity: 1; pointer-events: all; }
.paper-modal {
    background: #faf8f3; color: #1a1a1a; border-radius: 4px;
    width: 100%; max-width: 760px; box-shadow: 0 40px 120px rgba(0,0,0,0.8);
    transform: translateY(16px); transition: transform 0.25s; overflow: hidden;
    margin: auto;
}
.paper-modal-overlay.open .paper-modal { transform: translateY(0); }
.paper-chrome {
    background: #1a1e2a; padding: 14px 20px; display: flex; align-items: center;
    gap: 12px; border-bottom: 1px solid rgba(255,255,255,0.06);
    position: relative;
}
.paper-chrome-title { font-size: 12px; font-family: 'Karla', sans-serif; font-weight: 700; color: var(--gold); letter-spacing: 1px; text-transform: uppercase; flex: 1; }
.paper-chrome-sub { font-size: 10px; color: var(--text3); font-weight: 400; margin-top: 1px; }
.btn-close-paper {
    position: absolute;
    right: 20px;
    top: 14px;
    width: 28px; height: 28px; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
    border-radius: 6px; cursor: pointer; display: flex; align-items: center; justify-content: center;
    color: var(--text2); transition: all 0.15s; flex-shrink: 0;
}
.btn-close-paper:hover { background: var(--red-bg); color: var(--red); border-color: rgba(224,85,85,0.3); }
.btn-close-paper svg { width: 12px; height: 12px; }
.format-notes { background: #f0ebe0; border-bottom: 2px solid #d4c89a; padding: 14px 32px; }
.format-notes-title { font-family: 'Karla', sans-serif; font-size: 10px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; color: #8a7540; margin-bottom: 8px; }
.format-notes-list { display: flex; flex-wrap: wrap; gap: 6px; }
.format-note-chip { font-size: 11px; font-family: 'Karla', sans-serif; font-weight: 600; color: #5a4a1e; background: rgba(201,168,76,0.15); border: 1px solid rgba(201,168,76,0.3); padding: 4px 10px; border-radius: 20px; line-height: 1.3; }
.paper-content { padding: 60px 80px; font-family: 'EB Garamond', Georgia, serif; font-size: 12pt; line-height: 2; color: #1a1a1a; background: #faf8f3; min-height: 600px; }

.paper-content.apa .paper-title-block { text-align: center; margin-bottom: 48px; }
.paper-content.apa .paper-running-head { font-family: 'Karla', sans-serif; font-size: 10pt; text-transform: uppercase; letter-spacing: 0.5px; color: #666; margin-bottom: 24px; font-weight: 700; }
.paper-content.apa .paper-title { font-family: 'EB Garamond', Georgia, serif; font-size: 14pt; font-weight: 500; margin-bottom: 12px; line-height: 1.5; }
.paper-content.apa .paper-author { font-size: 12pt; margin-bottom: 4px; }
.paper-content.apa .paper-affiliation { font-size: 12pt; color: #555; margin-bottom: 4px; }
.paper-content.apa .paper-course { font-size: 12pt; color: #555; }
.paper-content.apa .section-heading { font-size: 14pt; font-weight: 700; text-align: center; margin: 32px 0 16px; color: #1a1a1a; }
.paper-content.apa .sub-heading { font-size: 12pt; font-weight: 700; font-style: italic; margin: 24px 0 0; color: #1a1a1a; display: block; }
.paper-content.apa p { margin-bottom: 0; text-indent: 0.5in; }
.paper-content.apa .abstract-block { margin: 0 0 32px; padding: 0; }
.paper-content.apa .abstract-block .abstract-label { font-size: 14pt; font-weight: 700; text-align: center; display: block; margin-bottom: 8px; }
.paper-content.apa .abstract-block p { text-indent: 0; }
.paper-content.apa .keywords { font-style: italic; margin-top: 8px; text-indent: 0; font-size: 11pt; }
.paper-content.apa .keywords strong { font-style: normal; font-weight: 700; }
.paper-content.apa .intext-cite { color: #2c5f8a; font-size: 11.5pt; }
.paper-content.apa .references-section { margin-top: 48px; }
.paper-content.apa .references-section .ref-title { font-size: 14pt; font-weight: 700; text-align: center; margin-bottom: 16px; display: block; }
.paper-content.apa .ref-entry { margin-bottom: 16px; padding-left: 0.5in; text-indent: -0.5in; font-size: 11.5pt; line-height: 1.8; }
.paper-content.mla .mla-header { margin-bottom: 0; }
.paper-content.mla .mla-header p { text-indent: 0; margin-bottom: 0; line-height: 2; }
.paper-content.mla .mla-title { text-align: center; margin-bottom: 0; text-indent: 0; font-size: 12pt; }
.paper-content.mla p { text-indent: 0.5in; margin-bottom: 0; }
.paper-content.mla .mla-no-indent { text-indent: 0; }
.paper-content.mla .intext-cite { color: #2c5f8a; font-size: 11.5pt; }
.paper-content.mla .works-cited { margin-top: 48px; }
.paper-content.mla .works-cited .wc-title { text-align: center; font-size: 12pt; margin-bottom: 0; display: block; text-indent: 0; }
.paper-content.mla .ref-entry { margin-bottom: 0; padding-left: 0.5in; text-indent: -0.5in; font-size: 11.5pt; line-height: 2; }
.paper-content.mla .page-header { font-family: 'Karla', sans-serif; font-size: 10pt; color: #888; text-align: right; margin-bottom: 0; text-indent: 0; font-weight: 600; }
.paper-content.chicago { line-height: 2; }
.paper-content.chicago .chicago-title-page { text-align: center; margin-bottom: 60px; padding-top: 80px; }
.paper-content.chicago .chicago-title-page .paper-title { font-size: 16pt; font-weight: 400; margin-bottom: 60px; line-height: 1.5; }
.paper-content.chicago .chicago-title-page .paper-author { font-size: 12pt; margin-bottom: 8px; }
.paper-content.chicago .chicago-title-page .paper-course { font-size: 12pt; color: #555; }
.paper-content.chicago p { text-indent: 0.5in; margin-bottom: 0; }
.paper-content.chicago .no-indent { text-indent: 0; }
.paper-content.chicago .intext-cite { color: #2c5f8a; }
.paper-content.chicago .footnote-section { margin-top: 32px; padding-top: 16px; border-top: 1px solid #bbb; }
.paper-content.chicago .footnote-entry { font-size: 10pt; line-height: 1.6; padding-left: 1.5em; text-indent: -1.5em; margin-bottom: 8px; color: #333; }
.paper-content.chicago .footnote-num { font-size: 8pt; vertical-align: super; }
.paper-content.chicago sup { font-size: 8pt; color: #2c5f8a; vertical-align: super; }
.paper-content.chicago .bibliography { margin-top: 48px; }
.paper-content.chicago .bibliography .bib-title { text-align: center; font-size: 12pt; margin-bottom: 16px; display: block; }
.paper-content.chicago .ref-entry { padding-left: 0.5in; text-indent: -0.5in; font-size: 11.5pt; line-height: 1.8; margin-bottom: 16px; }
.paper-content.harvard { line-height: 2; }
.paper-content.harvard p { text-indent: 0; margin-bottom: 16px; }
.paper-content.harvard .harvard-title-block { margin-bottom: 40px; }
.paper-content.harvard .harvard-title-block .paper-title { font-size: 18pt; font-weight: 700; margin-bottom: 12px; line-height: 1.3; }
.paper-content.harvard .harvard-meta { font-size: 11pt; color: #555; margin-bottom: 4px; font-style: italic; }
.paper-content.harvard .section-heading { font-size: 13pt; font-weight: 700; margin: 28px 0 12px; }
.paper-content.harvard .intext-cite { color: #2c5f8a; font-size: 11.5pt; }
.paper-content.harvard .reference-list { margin-top: 48px; }
.paper-content.harvard .ref-title { font-size: 14pt; font-weight: 700; margin-bottom: 16px; display: block; }
.paper-content.harvard .ref-entry { padding-left: 0.5in; text-indent: -0.5in; font-size: 11pt; line-height: 1.8; margin-bottom: 12px; }
.annotation { background: rgba(201,168,76,0.12); border-left: 3px solid var(--gold); padding: 10px 14px; margin: 16px 0; border-radius: 0 6px 6px 0; font-family: 'Karla', sans-serif; font-size: 10.5pt; line-height: 1.5; color: #5a4a1e; }
.annotation strong { color: #8a6a10; font-weight: 800; font-size: 10pt; letter-spacing: 0.5px; text-transform: uppercase; display: block; margin-bottom: 3px; }

/* ── TOAST ── */
.toast {
    position: fixed; bottom: 24px; right: 24px; background: var(--surface);
    border: 1px solid var(--border2); border-radius: 10px; padding: 12px 18px;
    font-size: 13px; font-weight: 600; color: var(--text); box-shadow: var(--shadow);
    z-index: 999; transform: translateY(80px); opacity: 0;
    transition: transform 0.25s ease, opacity 0.25s ease;
    display: flex; align-items: center; gap: 10px;
}
.toast.show { transform: translateY(0); opacity: 1; }
.toast.success { border-color: rgba(76,175,130,0.4); }
.toast.success .toast-icon { color: var(--green); }
.toast.error { border-color: rgba(224,85,85,0.4); }
.toast.error .toast-icon { color: var(--red); }

/* ── SPINNER ── */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner { display: inline-block; width: 12px; height: 12px; border: 2px solid rgba(201,168,76,0.3); border-top-color: var(--gold); border-radius: 50%; animation: spin 0.7s linear infinite; }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
    .layout { grid-template-columns: 1fr; }
    .panel-left { padding-right: 0; position: static; max-height: none; overflow-y: visible; }
    .panel-right { padding-left: 0; margin-top: 32px; }
    header { padding: 16px 20px; }
    .nav-tabs { padding: 0 16px; top: 73px; }
    .header-style-wrap { display: none; }
    .paper-content { padding: 32px 24px; font-size: 11pt; }
}

/* ── LIGHT MODE OVERRIDES ── */
body.light-mode {
    --bg: #faf9f6;
    --bg2: #f0ede5;
    --surface: #ffffff;
    --surface2: #f5f3ee;
    --surface3: #e8e4db;
    --border: #e0dcd3;
    --border2: #d4cfc5;
    --border3: #b0a890;
    --text: #1a1a1a;
    --text2: #3a3a3a;
    --text3: #5a5a5a;
    --text4: #8a8a8a;
    --gold: #b8932e;            /* slightly deeper for contrast on light bg */
    --gold2: #d4af4a;
    --gold-dim: rgba(184, 147, 46, 0.1);
    --gold-dim2: rgba(184, 147, 46, 0.04);
    --green: #2d7a4f;
    --green-bg: rgba(45, 122, 79, 0.08);
    --red: #c0392b;
    --red-bg: rgba(192, 57, 43, 0.08);
    --blue: #2c5f8a;
    --blue-bg: rgba(44, 95, 138, 0.08);
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
}

/* Ensure gold badges and labels remain visible */
body.light-mode .style-badge,
body.light-mode .example-box .label,
body.light-mode .lookup-title svg,
body.light-mode .nav-tab.active {
    color: var(--gold) !important;
}

/* Adjust paper modal background (already light by default) */
body.light-mode .paper-modal {
    background: #ffffff;
    border: 1px solid #d4cfc5;
}

/* Keep header text readable */
body.light-mode .header-text h1,
body.light-mode .header-text p {
    color: #1a1a1a;
}
body.light-mode .header-text h1 span {
    color: var(--gold);
}