/**
 * Marky Mark — Components
 * Guide prompt cards and value table.
 */

/* --- Guide Prompt Cards — three-level drill-down --- */
#prompt-cards {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 10px 0 0;
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

body.is-active #prompt-cards {
    display: none;
}

/* ── Shared chip base ─────────────────────────────────────────────── */
.pc-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 11px 6px 9px;
    border-radius: 20px;
    border: 1.5px solid var(--chip-border);
    background: var(--chip-bg);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    flex-shrink: 0;
    font-family: inherit;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.pc-chip-icon {
    width: 13px;
    height: 13px;
    flex-shrink: 0;
}

.pc-chevron {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
    color: var(--text-tertiary);
    transition: transform 0.2s, color 0.15s;
    margin-left: 1px;
}

/* Inactive chip hover */
.pc-chip:hover:not(.pc-chip--locked):not(.pc-chip--active) {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}
.pc-chip:hover:not(.pc-chip--locked):not(.pc-chip--active) .pc-chevron {
    color: var(--text-secondary);
}

.pc-chip--active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--bg-color);
}
.pc-chip--active .pc-chevron {
    color: rgba(255, 255, 255, 0.6);
    transform: rotate(180deg);
}

/* Active chip hover — lighten slightly */
.pc-chip--active:hover {
    opacity: 0.85;
}

.pc-chip--locked {
    opacity: 0.35;
    cursor: default;
}

.pc-soon {
    display: none;
}

/* ── Tool row ─────────────────────────────────────────────────────── */
.pc-tool-row {
    display: flex;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
    justify-content: center;
}
.pc-tool-row::-webkit-scrollbar { display: none; }

/* ── Level tabs (GCSE / A-Level) ──────────────────────────────────── */
.pc-level-tabs {
    display: flex;
    gap: 6px;
    width: 100%;
}
.pc-level-tab {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    padding: 8px 14px;
    border-radius: 20px;
    border: 1.5px solid var(--chip-border);
    background: var(--chip-bg);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    font-family: inherit;
    transition: border-color 0.15s, color 0.15s, background 0.15s;
}
.pc-tab-chevron {
    width: 13px;
    height: 13px;
    flex-shrink: 0;
    color: var(--text-tertiary);
    transition: transform 0.2s ease, color 0.15s;
}
.pc-level-tab--active {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: color-mix(in srgb, var(--primary-color) 8%, var(--chip-bg));
}
.pc-level-tab--active .pc-tab-chevron {
    transform: rotate(180deg);
    color: var(--primary-color);
}
.pc-level-tab:hover:not(.pc-level-tab--active) {
    border-color: var(--text-secondary);
    color: var(--text-primary);
}
.pc-level-tab:hover:not(.pc-level-tab--active) .pc-tab-chevron {
    color: var(--text-secondary);
}

/* ── Category row ─────────────────────────────────────────────────── */
.pc-cat-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px;
}
.pc-cat-row::-webkit-scrollbar { display: none; }

.pc-level-label {
    display: flex;
    align-items: center;
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    white-space: nowrap;
    flex-shrink: 0;
    align-self: center;
}
.pc-level-label--sep {
    margin-left: 4px;
    padding-left: 10px;
    border-left: 1px solid var(--border-color);
}

.pc-chip--cat {
    font-size: 0.75rem;
    padding: 5px 10px 5px 8px;
}

/* ── Topic rows panel ─────────────────────────────────────────────── */
.pc-topic-panel {
    display: flex;
    flex-direction: column;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    max-height: 210px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
    animation: pcFadeUp 0.15s ease;
}
.pc-topic-panel::-webkit-scrollbar { width: 4px; }
.pc-topic-panel::-webkit-scrollbar-track { background: transparent; }
.pc-topic-panel::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 2px; }

.pc-topic-row {
    display: flex;
    align-items: center;
    padding: 10px 14px 10px 16px;
    border-left: 2.5px solid transparent;
    cursor: pointer;
    font-size: 0.82rem;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-subtle);
    transition: border-left-color 0.12s, color 0.12s, background 0.12s;
    font-family: inherit;
    background: var(--bg-color);
    width: 100%;
    text-align: left;
    border-right: none;
    border-top: none;
    outline: none;
}
.pc-topic-row:last-child { border-bottom: none; }

.pc-topic-row:hover {
    border-left-color: var(--text-primary);
    color: var(--text-primary);
    background: var(--bg-secondary);
}

.pc-arrow {
    margin-left: auto;
    color: var(--text-tertiary);
    font-size: 0.8rem;
}
.pc-topic-row:hover .pc-arrow { color: var(--text-secondary); }

.pc-tier {
    flex-shrink: 0;
    margin-left: 8px;
    margin-right: 2px;
    font-size: 0.64rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    padding: 1px 5px;
    border-radius: 3px;
}
.pc-tier--h   { background: color-mix(in srgb, #f59e0b 12%, var(--chip-bg)); color: #b45309; }
.pc-tier--fh  { background: color-mix(in srgb, var(--primary-color) 10%, var(--chip-bg)); color: var(--primary-color); }
.pc-tier--y1  { background: color-mix(in srgb, #10b981 12%, var(--chip-bg)); color: #047857; }
.pc-tier--y2  { background: color-mix(in srgb, #8b5cf6 12%, var(--chip-bg)); color: #6d28d9; }
[data-theme="dark"] .pc-tier--h  { color: #fbbf24; }
[data-theme="dark"] .pc-tier--fh { color: var(--primary-color); }
[data-theme="dark"] .pc-tier--y1 { color: #34d399; }
[data-theme="dark"] .pc-tier--y2 { color: #a78bfa; }

@keyframes pcFadeUp {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* --- Value Table (inline in chat message) --- */
.vt-inline-container {
    margin-top: 10px;
    padding: 8px 10px 10px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    overflow-x: auto;
    animation: vtSlideUp 200ms cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes vtSlideUp {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

.vt-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

.vt-equation {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--table-eq-color, rgba(0, 0, 0, 0.75));
    transition: color 0.3s ease;
}

.vt-status {
    font-size: 0.72rem;
    color: var(--text-tertiary);
}

.vt-grid {
    width: 100%;
    table-layout: fixed;
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.vt-grid th {
    background: var(--bg-secondary);
    padding: 5px 8px;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.vt-grid td {
    padding: 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    position: relative;
    height: 34px;
}

.vt-grid td:last-child { border-right: none; }
.vt-grid tr:last-child td { border-bottom: none; }

.vt-grid td.vt-label {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.72rem;
    width: 28px;
}

.vt-grid td.vt-x {
    background: var(--bg-secondary);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.82rem;
}

.vt-grid td.vt-y {
    background: var(--bg-color);
}

.vt-grid td.vt-y:hover {
    background: var(--bg-secondary);
}

.vt-y input {
    width: 100%;
    height: 100%;
    border: none;
    background: transparent;
    text-align: center;
    font-size: 0.82rem;
    font-family: inherit;
    color: var(--text-primary);
    padding: 6px;
    outline: none;
    box-sizing: border-box;
}

.vt-y input:focus {
    background: #f0f4ff;
}

[data-theme="dark"] .vt-y input:focus {
    background: rgba(59, 124, 244, 0.12);
}

.vt-y input::placeholder {
    color: var(--text-tertiary);
    font-style: italic;
}

/* Cell states */
.vt-y.correct {
    background: #f0fff4;
    box-shadow: inset 0 0 0 2px #2ecc71;
}
.vt-y.correct::after {
    content: "\2713";
    position: absolute;
    top: 4px;
    right: 6px;
    color: #2ecc71;
    font-size: 0.7rem;
    font-weight: 700;
}
.vt-y.correct input { color: #2ecc71; font-weight: 600; }

.vt-y.incorrect {
    background: #fff5f5;
    box-shadow: inset 0 0 0 2px #e74c3c;
}
.vt-y.incorrect::after {
    content: "\2717";
    position: absolute;
    top: 4px;
    right: 6px;
    color: #e74c3c;
    font-size: 0.7rem;
    font-weight: 700;
}
.vt-y.incorrect input { color: #e74c3c; }

.vt-y.ai-filled { background: var(--bg-secondary); }
.vt-y.ai-filled input { color: var(--text-primary); font-weight: 600; }

/* Check button */
.vt-check-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin: 8px auto 0;
    padding: 6px 24px;
    background: var(--bg-hover);
    color: var(--text-tertiary);
    border: none;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: default;
    transition: background 0.3s, color 0.3s, box-shadow 0.3s;
}

.vt-check-btn.ready {
    background: #2ecc71;
    color: #fff;
    cursor: pointer;
}

.vt-check-btn.ready:hover {
    background: #27ae60;
}

.vt-check-btn:disabled {
    background: var(--bg-hover);
    color: var(--text-tertiary);
    cursor: default;
}

.vt-check-btn.glow {
    animation: vtGlow 0.5s ease-out;
}

@keyframes vtGlow {
    0% { box-shadow: 0 0 0 0 rgba(46, 204, 113, 0.6); }
    100% { box-shadow: 0 0 0 0 transparent; }
}

/* Inline spinner */
.vt-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: vtSpin 0.6s linear infinite;
}

@keyframes vtSpin {
    to { transform: rotate(360deg); }
}

/* ─── Slider Card (inline in chat message) ────────────────────────────────── */
.sc-inline-container { margin-top: 10px; }

.sc-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    font-size: 14px;
}

.sc-header {
    padding: 10px 14px 8px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-tertiary, var(--bg-secondary));
}

.sc-eq {
    font-family: 'Georgia', serif;
    font-size: 15px;
    color: var(--text-primary);
    letter-spacing: 0.01em;
}

.sc-param {
    display: inline-block;
    min-width: 1.5ch;
    text-align: center;
}

.sc-body {
    padding: 10px 14px 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sc-row {
    display: grid;
    grid-template-columns: 60px 1fr 52px;
    align-items: center;
    gap: 10px;
}

.sc-label {
    font-weight: 600;
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sc-track-wrap {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

/* Range input with coloured fill via CSS custom properties */
.sc-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 4px;
    background: linear-gradient(
        to right,
        var(--sc-color) 0%,
        var(--sc-color) var(--pct, 50%),
        var(--border-color) var(--pct, 50%),
        var(--border-color) 100%
    );
    outline: none;
    cursor: pointer;
}

.sc-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--sc-color);
    box-shadow: 0 0 0 2px var(--bg-secondary);
    cursor: grab;
    transition: transform 0.1s;
}

.sc-range::-webkit-slider-thumb:active { cursor: grabbing; transform: scale(1.2); }

.sc-range::-moz-range-thumb {
    width: 14px;
    height: 14px;
    border: none;
    border-radius: 50%;
    background: var(--sc-color);
    box-shadow: 0 0 0 2px var(--bg-secondary);
    cursor: grab;
}

.sc-range:disabled { opacity: 0.5; cursor: not-allowed; }
.sc-range:disabled::-webkit-slider-thumb { cursor: not-allowed; }

.sc-minmax {
    display: flex;
    justify-content: space-between;
    font-size: 10px;
    color: var(--text-muted);
}

.sc-value {
    font-weight: 700;
    font-size: 13px;
    text-align: center;
    padding: 2px 6px;
    border-radius: 6px;
    border: 1px solid;
    white-space: nowrap;
}

/* Frozen state — shown in chat history */
.sc-frozen {
    opacity: 0.75;
}

/* ── Sidebar user row (ChatGPT-style footer) ──────────────────────────────── */

.sidebar-user-row {
    display: flex;
    align-items: center;
    width: 100%;
    gap: 4px;
}

/* ── Sidebar account button ───────────────────────────────────────────────── */

.sidebar-account-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    min-width: 0;
    padding: 6px 10px;
    border-radius: 8px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.84rem;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.12s;
    text-align: left;
}
.sidebar-account-btn:hover { background: var(--chip-bg, rgba(0,0,0,0.04)); }

.sidebar-account-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: #0f172a;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
}
[data-theme="dark"] .sidebar-account-avatar { background: #334155; color: #f1f5f9; }

/* Name + plan stacked inside the button */
.sidebar-user-info {
    display: flex;
    flex-direction: column;
    gap: 1px;
    min-width: 0;
    flex: 1;
    overflow: hidden;
}
.sidebar-user-name {
    font-size: 0.84rem;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    line-height: 1.2;
}
.sidebar-user-plan {
    font-size: 0.72rem;
    color: var(--text-secondary);
    line-height: 1.2;
}

/* Inline upgrade pill to the right of the user info */
.sidebar-inline-upgrade {
    flex-shrink: 0;
    padding: 4px 10px;
    border-radius: 12px;
    border: 1.5px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.74rem;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.12s, border-color 0.12s, color 0.12s;
    white-space: nowrap;
}
.sidebar-inline-upgrade:hover {
    background: var(--bg-hover);
    border-color: var(--text-secondary);
    color: var(--text-primary);
}
[data-theme="dark"] .sidebar-inline-upgrade {
    border-color: rgba(255,255,255,0.2);
}
[data-theme="dark"] .sidebar-inline-upgrade:hover {
    border-color: rgba(255,255,255,0.4);
    color: rgba(255,255,255,0.9);
}

/* ── Account button ───────────────────────────────────────────────────────── */

.account-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1.5px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s, color 0.15s;
    flex-shrink: 0;
}
.account-btn:hover {
    border-color: var(--text-secondary);
    color: var(--text-primary);
    background: var(--chip-bg, rgba(0,0,0,0.04));
}
.account-btn.is-signed-in {
    border-color: #3b7cf4;
    background: #3b7cf4;
    color: #fff;
}
.account-avatar {
    font-size: 14px;
    font-weight: 700;
    line-height: 1;
}

.account-btn[hidden] { display: none; }

/* Account dropdown */
.account-dropdown {
    position: fixed;
    z-index: 2100;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 8px 32px var(--shadow-md);
    padding: 8px 0;
    min-width: 200px;
}
.account-dropdown-email {
    padding: 8px 16px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.account-dropdown-sep {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 4px 0;
}
.account-dropdown-item {
    display: block;
    width: 100%;
    padding: 8px 16px;
    text-align: left;
    font-size: 0.88rem;
    font-family: inherit;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    transition: background 0.1s;
}
.account-dropdown-item:hover { background: var(--chip-bg, rgba(0,0,0,0.04)); }
.account-dropdown-icon-item {
    display: flex;
    align-items: center;
    gap: 8px;
}
.account-dropdown-upgrade {
    color: var(--text-primary);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 7px;
}

/* ── Header upgrade pill ──────────────────────────────────────────────────── */

.header-upgrade-btn[hidden] { display: none; }

.header-upgrade-btn {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border-radius: 20px;
    border: 1.5px solid rgba(15, 23, 42, 0.22);
    background: rgba(15, 23, 42, 0.06);
    color: #1e293b;
    font-size: 0.78rem;
    font-weight: 700;
    font-family: inherit;
    letter-spacing: 0.01em;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
    white-space: nowrap;
    flex-shrink: 0;
}
.header-upgrade-btn:hover {
    background: rgba(15, 23, 42, 0.1);
    border-color: rgba(15, 23, 42, 0.4);
}
[data-theme="dark"] .header-upgrade-btn {
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.07);
    color: rgba(255, 255, 255, 0.82);
}
[data-theme="dark"] .header-upgrade-btn:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.35);
}

/* ── Auth Modal ───────────────────────────────────────────────────────────── */

#auth-modal {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px);
    padding: 16px;
}
#auth-modal[hidden] { display: none; }

.auth-modal-card {
    position: relative;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 32px 32px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 16px 64px rgba(0, 0, 0, 0.18);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
}
.auth-modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 28px;
    height: 28px;
    background: var(--bg-secondary);
    border: none;
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.1s, color 0.1s;
}
.auth-modal-close:hover { background: var(--border-color); color: var(--text-primary); }

.auth-modal-title {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 18px;
    letter-spacing: -0.02em;
    text-align: center;
}

/* Benefits list */
.auth-perks {
    list-style: none;
    margin: 0 0 22px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 14px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 0.84rem;
    color: var(--text-secondary);
}
.auth-perks li {
    display: flex;
    align-items: center;
    gap: 9px;
}
.auth-perk-check {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #dcfce7;
    border: 1.5px solid #86efac;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 800;
    color: #16a34a;
    flex-shrink: 0;
}

.auth-google-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 13px 0;
    border-radius: 100px;
    border: 1.5px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-primary);
    font-size: 0.92rem;
    font-weight: 600;
    font-family: inherit;
    text-decoration: none;
    cursor: pointer;
    transition: border-color 0.15s, box-shadow 0.15s;
    margin-bottom: 0;
}
.auth-google-btn:hover {
    border-color: var(--text-secondary);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.09);
}
@keyframes authSpin { to { transform: rotate(360deg); } }

.auth-divider {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 16px 0;
    color: var(--text-tertiary, #94a3b8);
    font-size: 0.76rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}
.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.magic-link-form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.auth-email-input {
    width: 100%;
    padding: 13px 18px;
    border-radius: 100px;
    border: 1.5px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: inherit;
    box-sizing: border-box;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.auth-email-input:focus {
    border-color: #3b7cf4;
    box-shadow: 0 0 0 3px rgba(59, 124, 244, 0.12);
}
.auth-magic-btn {
    width: 100%;
    padding: 13px 0;
    border-radius: 100px;
    border: none;
    background: #0f172a;
    color: #fff;
    font-size: 0.92rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s;
}
.auth-magic-btn:hover { background: #1e293b; }
.auth-magic-btn:disabled { opacity: 0.55; cursor: default; }
.auth-magic-sent {
    font-size: 0.88rem;
    color: var(--text-secondary);
    text-align: center;
    padding: 8px 0;
    margin: 0;
    line-height: 1.6;
}
.auth-privacy {
    font-size: 0.72rem;
    color: var(--text-tertiary, #94a3b8);
    text-align: center;
    margin-top: 14px;
    line-height: 1.5;
}
.auth-privacy a { color: inherit; }

/* ── Toast notifications ──────────────────────────────────────────────────── */

.auth-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(16px);
    background: var(--text-primary);
    color: var(--bg-color);
    padding: 10px 20px;
    border-radius: 10px;
    font-size: 0.86rem;
    box-shadow: 0 4px 16px rgba(0,0,0,0.18);
    z-index: 400;
    opacity: 0;
    transition: opacity 0.2s, transform 0.2s;
    white-space: nowrap;
    max-width: calc(100vw - 32px);
    text-align: center;
}
.auth-toast--visible { opacity: 1; transform: translateX(-50%) translateY(0); }
.auth-toast--error { background: #dc2626; color: #fff; }
.auth-toast--success { background: #16a34a; color: #fff; }

/* ── Upgrade sheet ────────────────────────────────────────────────────────── */

#upgrade-sheet {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
}
#upgrade-sheet[hidden] { display: none; }

.upgrade-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(4px);
}
.upgrade-card {
    position: relative;
    z-index: 1;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 36px 28px 28px;
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 16px 64px rgba(0,0,0,0.18);
}
.upgrade-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 28px;
    height: 28px;
    background: var(--bg-secondary);
    border: none;
    border-radius: 50%;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.1s;
}
.upgrade-close:hover { background: var(--border-color); }
.upgrade-title {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 6px;
    letter-spacing: -0.02em;
    text-align: center;
}
.upgrade-sub {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0 0 22px;
    line-height: 1.55;
    text-align: center;
}

/* ── Plan comparison cards ──────────────────────────────────────────────── */

.uplan-cards {
    display: flex;
    gap: 12px;
    margin-bottom: 14px;
}
.uplan {
    flex: 1;
    border: 1.5px solid var(--border-color);
    border-radius: 14px;
    padding: 16px 14px 14px;
    display: flex;
    flex-direction: column;
}
.uplan--pro {
    border-color: #0f172a;
    box-shadow: 0 0 0 2px rgba(15, 23, 42, 0.06);
}
[data-theme="dark"] .uplan--pro {
    border-color: rgba(255, 255, 255, 0.55);
    box-shadow: none;
}
.uplan-name {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    margin-bottom: 8px;
}
.uplan-price-static {
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}
.uplan-price-toggle {
    display: flex;
    background: var(--bg-secondary);
    border-radius: 7px;
    padding: 3px;
    gap: 2px;
    margin-bottom: 10px;
}
.uplan-toggle-btn {
    flex: 1;
    padding: 5px 2px;
    border-radius: 5px;
    border: none;
    font-size: 0.7rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    background: transparent;
    color: var(--text-secondary);
    transition: background 0.12s, color 0.12s, box-shadow 0.12s;
    line-height: 1.4;
}
.uplan-toggle-btn.active {
    background: var(--bg-color);
    color: var(--text-primary);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.1);
}
.uplan-save-tag {
    display: inline-block;
    background: #16a34a;
    color: #fff;
    font-size: 0.57rem;
    font-weight: 700;
    padding: 1px 4px;
    border-radius: 3px;
    vertical-align: middle;
    margin-left: 2px;
}
.uplan-price-wrap {
    display: flex;
    align-items: baseline;
    gap: 3px;
    margin-bottom: 2px;
}
.uplan-price-big {
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--text-primary);
    transition: opacity 0.15s, transform 0.15s;
}
.uplan-price-period {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: opacity 0.15s, transform 0.15s;
}
.uplan-price-big.is-switching,
.uplan-price-period.is-switching {
    opacity: 0;
    transform: translateY(-4px);
}
.uplan-trial-note {
    font-size: 0.7rem;
    font-weight: 600;
    color: #16a34a;
    margin-bottom: 10px;
}
.uplan-sep {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 10px 0;
}
.uplan-feat-label {
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 7px;
}
.uplan-feat {
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 0.79rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
}
.uplan-feat--x { color: var(--text-tertiary, #94a3b8); }
.uplan-check {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: #dcfce7;
    border: 1.5px solid #86efac;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8px;
    font-weight: 800;
    color: #16a34a;
    flex-shrink: 0;
}
.uplan-cross {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: 1.5px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 8px;
    font-weight: 800;
    color: var(--text-tertiary);
    flex-shrink: 0;
}
.uplan-current-btn {
    margin-top: auto;
    padding: 9px 0;
    border-radius: 9px;
    border: 1.5px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-tertiary);
    font-size: 0.79rem;
    font-weight: 600;
    font-family: inherit;
    cursor: default;
    width: 100%;
    margin-top: 12px;
}
/* .pricing-btn kept for auth.js binding — visual style via .uplan-cta-btn */
.pricing-btn { /* intentionally unstyled — see .uplan-cta-btn */ }
.uplan-cta-btn {
    margin-top: 12px;
    width: 100%;
    padding: 10px 0;
    border-radius: 9px;
    border: none;
    background: #0f172a;
    color: #fff;
    font-size: 0.85rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s;
}
.uplan-cta-btn:hover { background: #1e293b; }
.uplan-cta-btn:disabled { opacity: 0.55; cursor: default; }
[data-theme="dark"] .uplan-cta-btn {
    background: #f8fafc;
    color: #0f172a;
}
[data-theme="dark"] .uplan-cta-btn:hover { background: #e2e8f0; }
.upgrade-footer-note {
    font-size: 0.72rem;
    color: var(--text-tertiary, #94a3b8);
    text-align: center;
    margin: 0;
}
@media (max-width: 440px) {
    .uplan-cards { flex-direction: column; }
}

/* ── Daily usage counter (premium progress bar) ───────────────────────────── */

#daily-counter { padding: 6px 0 2px; }

.dc-inner {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 10px 14px 11px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
    animation: dcSlideUp 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes dcSlideUp {
    from { opacity: 0; transform: translateY(5px); }
    to   { opacity: 1; transform: translateY(0); }
}

.dc-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 7px;
    gap: 10px;
}

.dc-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.74rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.dc-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #d97706;
    box-shadow: 0 0 0 2px rgba(217, 119, 6, 0.2);
    flex-shrink: 0;
}
.dc-dot--red {
    background: #dc2626;
    box-shadow: 0 0 0 2px rgba(220, 38, 38, 0.2);
}

.dc-upgrade {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-primary);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3px 10px;
    cursor: pointer;
    font-family: inherit;
    white-space: nowrap;
    flex-shrink: 0;
    transition: background 0.12s;
}
.dc-upgrade:hover { background: var(--bg-hover, rgba(0,0,0,0.06)); }

.dc-track {
    width: 100%;
    height: 4px;
    background: var(--border-color);
    border-radius: 100px;
    overflow: hidden;
}

.dc-fill {
    height: 100%;
    border-radius: 100px;
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1), background 0.4s;
}

.dc-sub {
    margin-top: 5px;
    font-size: 0.68rem;
    color: var(--text-tertiary, #94a3b8);
    text-align: right;
}

/* Inline daily-limit-row */
.daily-limit-row .limit-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
}
.limit-upgrade-btn {
    padding: 9px 22px;
    border-radius: 10px;
    border: none;
    background: #0f172a;
    color: #fff;
    font-size: 0.86rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s;
}
.limit-upgrade-btn:hover { background: #1e293b; }

/* ── Sign-out confirmation modal ─────────────────────────────────────────── */

#signout-modal {
    position: fixed;
    inset: 0;
    z-index: 400;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    padding: 24px;
}
#signout-modal[hidden] { display: none; }
.signout-card {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 22px;
    padding: 40px 28px 32px;
    width: 100%;
    max-width: 340px;
    text-align: center;
    box-shadow: 0 16px 64px rgba(0, 0, 0, 0.18);
    display: flex;
    flex-direction: column;
    gap: 0;
}
.signout-title {
    font-size: 1.45rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin: 0 0 12px;
}
.signout-sub {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin: 0 0 24px;
    line-height: 1.5;
}
.signout-email {
    color: var(--text-primary);
    font-weight: 500;
}
.signout-confirm-btn {
    width: 100%;
    padding: 14px 0;
    border-radius: 100px;
    border: none;
    background: #0f172a;
    color: #fff;
    font-size: 0.95rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s;
    margin-bottom: 10px;
}
.signout-confirm-btn:hover { background: #1e293b; }
.signout-cancel-btn {
    width: 100%;
    padding: 14px 0;
    border-radius: 100px;
    border: 1.5px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.12s;
}
.signout-cancel-btn:hover { background: var(--bg-secondary); }

/* ── Daily limit inline message ───────────────────────────────────────────── */

.dlm-actions { margin-top: 12px; }
.dlm-upgrade-btn {
    padding: 8px 18px;
    border-radius: 8px;
    border: none;
    background: #0f172a;
    color: #fff;
    font-size: 0.84rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s;
}
.dlm-upgrade-btn:hover { background: #1e293b; }
[data-theme="dark"] .dlm-upgrade-btn { background: #f8fafc; color: #0f172a; }

/* ── Onboarding modal ─────────────────────────────────────────────────────── */

#onboarding-modal {
    position: fixed;
    inset: 0;
    z-index: 400;
    display: flex;
    align-items: center;
    justify-content: center;
}
#onboarding-modal[hidden] { display: none; }
.onboarding-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
}
.onboarding-card {
    position: relative;
    background: var(--bg-color);
    border-radius: 16px;
    padding: 28px 24px 20px;
    max-width: 440px;
    width: 92%;
    max-height: 88vh;
    overflow-y: auto;
}

/* Progress pips */
.ob-progress {
    display: flex;
    gap: 6px;
    margin-bottom: 24px;
}
.ob-pip {
    flex: 1;
    height: 3px;
    border-radius: 99px;
    background: var(--border-color);
    transition: background 0.2s;
}
.ob-pip--active { background: #378ADD; }

/* Title / breadcrumb */
.onboarding-title {
    font-size: 20px;
    font-weight: 700;
    margin: 0 0 6px;
    color: var(--text-primary);
}
.onboarding-sub {
    font-size: 14px;
    color: var(--text-secondary);
    margin: 0 0 20px;
}
.ob-breadcrumb {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 18px;
}
.ob-breadcrumb strong { color: var(--text-primary); font-weight: 600; }

/* Age group section */
.ob-age-group { margin-bottom: 16px; }
.ob-age-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--text-secondary);
    margin-bottom: 7px;
}

/* Option grid */
.ob-grid {
    display: grid;
    gap: 8px;
    margin-bottom: 0;
}
.ob-grid--2 { grid-template-columns: 1fr 1fr; }

/* Option buttons */
.ob-opt {
    padding: 11px 14px;
    border-radius: 10px;
    border: 0.5px solid var(--border-color);
    background: var(--bg-secondary);
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    transition: border-color 0.12s, background 0.12s;
    line-height: 1.3;
}
.ob-opt:hover { border-color: #378ADD; }
.ob-opt.is-selected {
    border: 1.5px solid #378ADD;
    background: #E6F1FB;
    color: #0C447C;
}
[data-theme="dark"] .ob-opt.is-selected { background: rgba(55,138,221,0.15); color: #78b4e8; }

/* De-emphasised options (Scottish Highers, AP) */
.ob-opt--dim { color: var(--text-secondary); }
.ob-opt--dim:hover { color: var(--text-primary); }

/* Full-width escape hatch */
.ob-opt--escape {
    width: 100%;
    text-align: center;
    color: var(--text-secondary);
    font-weight: 400;
}
.ob-opt--escape:hover { color: var(--text-primary); }

/* Inline expand section (Other text input) */
.ob-expand {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 8px;
    padding-left: 4px;
}
.ob-expand[hidden] { display: none; }

/* Divider */
.ob-divider {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 16px 0;
}

/* Full-width card (tier / year selection) */
.ob-card-list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 20px; }
.ob-card {
    width: 100%;
    padding: 14px 16px;
    border-radius: 10px;
    border: 0.5px solid var(--border-color);
    background: var(--bg-secondary);
    font-family: inherit;
    cursor: pointer;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 3px;
    transition: border-color 0.12s, background 0.12s;
}
.ob-card:hover { border-color: #378ADD; }
.ob-card.is-selected {
    border: 1.5px solid #378ADD;
    background: #E6F1FB;
}
[data-theme="dark"] .ob-card.is-selected { background: rgba(55,138,221,0.15); }
.ob-card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}
.ob-card.is-selected .ob-card-title { color: #0C447C; }
[data-theme="dark"] .ob-card.is-selected .ob-card-title { color: #78b4e8; }
.ob-card-desc {
    font-size: 13px;
    color: var(--text-secondary);
}
.ob-card.is-selected .ob-card-desc { color: #378ADD; }
[data-theme="dark"] .ob-card.is-selected .ob-card-desc { color: #5a9fd4; }

/* Year card with hint on the right */
.ob-card--year {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
}
.ob-card--year .ob-card-title { font-size: 16px; font-weight: 700; }
.ob-card--year .ob-card-desc { font-size: 12px; font-style: italic; }

/* Back link */
.ob-back-link {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    font-size: 13px;
    color: var(--text-secondary);
    font-family: inherit;
    cursor: pointer;
    padding: 0;
    margin-bottom: 14px;
    transition: color 0.15s;
}
.ob-back-link:hover { color: var(--text-primary); }

/* Board step save row */
.ob-save-row {
    display: flex;
    justify-content: flex-end;
    margin: 14px 0 10px;
}
.ob-save-btn {
    padding: 10px 22px;
    border-radius: 10px;
    border: none;
    background: #0f172a;
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s;
}
.ob-save-btn:hover { background: #1e293b; }
[data-theme="dark"] .ob-save-btn { background: #f8fafc; color: #0f172a; }
[data-theme="dark"] .ob-save-btn:hover { background: #e2e8f0; }

/* Inline text save button (other-text paths) */
.onboarding-save-inline {
    padding: 8px 14px;
    border-radius: 8px;
    border: none;
    background: #0f172a;
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s;
    align-self: flex-start;
}
.onboarding-save-inline:hover { background: #1e293b; }
[data-theme="dark"] .onboarding-save-inline { background: #f8fafc; color: #0f172a; }
[data-theme="dark"] .onboarding-save-inline:hover { background: #e2e8f0; }

/* Text input */
.onboarding-other-input {
    width: 100%;
    padding: 10px 14px;
    border-radius: 10px;
    border: 1.5px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 14px;
    font-family: inherit;
    outline: none;
    box-sizing: border-box;
    transition: border-color 0.15s;
}
.onboarding-other-input:focus { border-color: #378ADD; }

/* Skip link */
.onboarding-skip {
    display: block;
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    width: 100%;
    font-family: inherit;
    transition: color 0.15s;
    margin-top: 4px;
}
.onboarding-skip:hover { color: var(--text-primary); }
[data-theme="dark"] .dlm-upgrade-btn:hover { background: #e2e8f0; }