/*
 * QuantumFlex SmartForms — Design System
 * Copyright (c) 2025-2026 QuantumFlex AI Inc.
 * All rights reserved. PROPRIETARY SOFTWARE - NOT FOR DISTRIBUTION
 *
 * Design language: "industrial precision, digital craft."
 * Type pair: Fraunces (display) + Geist (UI) + Geist Mono (technical).
 * Used by the auth-funnel + dashboard refresh starting 2026-05-10.
 *
 * Add new design-system primitives here. Keep common.css for utility
 * classes (qf-hidden, spacing, etc.); this file defines tokens and
 * larger components (buttons, cards, sections, form inputs).
 */

/* =============================================================
 * 1. Tokens
 * ============================================================= */

:root {
    /* Brand */
    --qf-primary:        #0ea5e9;
    --qf-primary-deep:   #0c4a6e;
    --qf-primary-glow:   #38bdf8;
    --qf-primary-soft:   #e0f2fe;
    --qf-primary-edge:   #bae6fd;

    /* Ink and surfaces */
    --qf-ink:            #0f172a;
    --qf-ink-muted:      #334155;
    --qf-ink-soft:       #475569;
    --qf-ink-faint:      #64748b;
    --qf-ink-ghost:      #94a3b8;

    --qf-paper:          #ffffff;
    --qf-paper-warm:     #fafbfc;
    --qf-paper-tint:     #f5f7fa;
    --qf-paper-deep:     #eef1f5;

    --qf-hairline:       #e7eaee;
    --qf-hairline-soft:  #eef1f5;

    /* Dark surfaces */
    --qf-steel:          #0b1220;
    --qf-steel-soft:     #131b2c;
    --qf-steel-hairline: #1f2a3d;

    /* Accents */
    --qf-amber:          #f59e0b;
    --qf-amber-soft:     #fef3c7;
    --qf-amber-deep:     #92400e;
    --qf-mint:           #10b981;
    --qf-mint-soft:      #d1fae5;
    --qf-rose:           #f43f5e;
    --qf-rose-soft:      #ffe4e6;

    /* Type */
    --qf-font-display:   "Fraunces", "Iowan Old Style", Georgia, "Times New Roman", serif;
    --qf-font-ui:        "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --qf-font-mono:      "Geist Mono", "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;

    /* Radii */
    --qf-radius-xs:  4px;
    --qf-radius-sm:  6px;
    --qf-radius-md:  10px;
    --qf-radius-lg:  16px;
    --qf-radius-xl:  24px;
    --qf-radius-pill: 9999px;

    /* Shadows */
    --qf-shadow-xs:  0 1px 2px rgba(15, 23, 42, 0.04);
    --qf-shadow-sm:  0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
    --qf-shadow-md:  0 4px 12px rgba(15, 23, 42, 0.08), 0 1px 3px rgba(15, 23, 42, 0.04);
    --qf-shadow-lg:  0 12px 32px rgba(15, 23, 42, 0.10), 0 4px 8px rgba(15, 23, 42, 0.04);
    --qf-shadow-xl:  0 24px 48px rgba(15, 23, 42, 0.14), 0 8px 16px rgba(15, 23, 42, 0.06);
    --qf-shadow-glow: 0 0 0 4px rgba(14, 165, 233, 0.16);
    --qf-shadow-press: inset 0 1px 0 rgba(255, 255, 255, 0.16);

    /* Motion */
    --qf-ease:        cubic-bezier(0.22, 1, 0.36, 1);
    --qf-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
    --qf-dur-fast:    160ms;
    --qf-dur:         260ms;
    --qf-dur-slow:    420ms;

    /* Layout */
    --qf-container:      72rem;       /* 1152px */
    --qf-container-narrow: 44rem;     /* 704px */
    --qf-container-wide: 80rem;       /* 1280px */
}

/* =============================================================
 * 2. Base reset additions (page-level only; keep light)
 * ============================================================= */

/* Universal border-box. Without this, <input> defaults to content-box
 * and inputs+buttons in the same form render at different effective
 * widths (input-padding ≠ button-padding) even when both declare
 * width: 100%. Scoped to .qf-doc descendants so the rule only
 * touches templates that opted in via <body class="qf-doc">. */
.qf-doc, .qf-doc *, .qf-doc *::before, .qf-doc *::after {
    box-sizing: border-box;
}

.qf-doc {
    font-family: var(--qf-font-ui);
    color: var(--qf-ink);
    background: var(--qf-paper-warm);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "ss01", "ss02", "cv11";
    text-rendering: optimizeLegibility;
}

/* =============================================================
 * 3. Typography
 * ============================================================= */

.qf-display {
    font-family: var(--qf-font-display);
    font-weight: 500;
    font-style: normal;
    font-variation-settings: "opsz" 144, "SOFT" 0, "WONK" 0;
    letter-spacing: -0.022em;
    line-height: 1.04;
    color: var(--qf-ink);
}

.qf-display em {
    font-family: var(--qf-font-display);
    font-style: italic;
    font-variation-settings: "opsz" 144, "SOFT" 100, "WONK" 1;
    color: var(--qf-primary);
}

.qf-eyebrow {
    font-family: var(--qf-font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--qf-ink-faint);
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
}

.qf-eyebrow::before {
    content: "";
    width: 1.25rem;
    height: 1px;
    background: currentColor;
    opacity: 0.5;
}

.qf-lede {
    font-size: 1.1875rem;
    line-height: 1.55;
    color: var(--qf-ink-soft);
    max-width: 38rem;
}

.qf-h2 {
    font-family: var(--qf-font-display);
    font-weight: 500;
    font-variation-settings: "opsz" 96, "SOFT" 20;
    font-size: clamp(1.875rem, 3vw, 2.5rem);
    letter-spacing: -0.018em;
    line-height: 1.1;
    color: var(--qf-ink);
}

.qf-h3 {
    font-family: var(--qf-font-ui);
    font-weight: 600;
    font-size: 1.0625rem;
    letter-spacing: -0.005em;
    color: var(--qf-ink);
}

.qf-mono {
    font-family: var(--qf-font-mono);
    font-feature-settings: "ss01", "ss02";
    font-variant-numeric: tabular-nums;
}

/* =============================================================
 * 4. Chips (mono spec labels — "PRO", "v2.1.3", "FREE", "01 / PROBLEM")
 * ============================================================= */

.qf-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-family: var(--qf-font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.3125rem 0.625rem;
    border-radius: var(--qf-radius-sm);
    background: var(--qf-paper-tint);
    color: var(--qf-ink-soft);
    border: 1px solid var(--qf-hairline);
    line-height: 1;
}

.qf-chip-primary {
    background: var(--qf-primary-soft);
    color: var(--qf-primary-deep);
    border-color: var(--qf-primary-edge);
}

.qf-chip-glow {
    background: var(--qf-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.18);
}

.qf-chip-amber {
    background: var(--qf-amber-soft);
    color: var(--qf-amber-deep);
    border-color: rgba(245, 158, 11, 0.3);
}

.qf-chip-mint {
    background: var(--qf-mint-soft);
    color: #065f46;
    border-color: rgba(16, 185, 129, 0.25);
}

.qf-chip-dot::before {
    content: "";
    width: 0.375rem;
    height: 0.375rem;
    border-radius: 50%;
    background: var(--qf-mint);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.18);
}

/* =============================================================
 * 5. Buttons
 * ============================================================= */

.qf-btn {
    --btn-bg: var(--qf-paper);
    --btn-fg: var(--qf-ink);
    --btn-bd: var(--qf-hairline);
    --btn-bg-hover: var(--qf-paper-tint);

    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-family: var(--qf-font-ui);
    font-size: 0.9375rem;
    font-weight: 500;
    letter-spacing: -0.005em;
    line-height: 1;
    padding: 0.75rem 1.125rem;
    border-radius: var(--qf-radius-md);
    background: var(--btn-bg);
    color: var(--btn-fg);
    border: 1px solid var(--btn-bd);
    cursor: pointer;
    text-decoration: none;
    transition: background var(--qf-dur-fast) var(--qf-ease),
                border-color var(--qf-dur-fast) var(--qf-ease),
                transform var(--qf-dur-fast) var(--qf-ease),
                box-shadow var(--qf-dur-fast) var(--qf-ease),
                color var(--qf-dur-fast) var(--qf-ease);
    box-shadow: var(--qf-shadow-xs);
    position: relative;
    isolation: isolate;
    white-space: nowrap;
}

.qf-btn:hover {
    background: var(--btn-bg-hover);
    border-color: var(--qf-ink-ghost);
    transform: translateY(-1px);
    box-shadow: var(--qf-shadow-sm);
}

.qf-btn:active {
    transform: translateY(0);
    box-shadow: var(--qf-shadow-xs);
}

.qf-btn:focus-visible {
    outline: none;
    box-shadow: var(--qf-shadow-glow);
}

.qf-btn-primary {
    --btn-bg: var(--qf-primary);
    --btn-fg: #ffffff;
    --btn-bd: transparent;
    --btn-bg-hover: var(--qf-primary-deep);
    box-shadow: var(--qf-shadow-press), 0 1px 2px rgba(2, 132, 199, 0.4),
                0 4px 12px rgba(14, 165, 233, 0.28);
}

.qf-btn-primary:hover {
    border-color: transparent;
    box-shadow: var(--qf-shadow-press), 0 2px 4px rgba(2, 132, 199, 0.5),
                0 8px 20px rgba(14, 165, 233, 0.35);
}

.qf-btn-ghost {
    --btn-bg: transparent;
    --btn-bd: transparent;
    --btn-bg-hover: var(--qf-paper-tint);
    box-shadow: none;
}

.qf-btn-ghost:hover { box-shadow: none; }

.qf-btn-on-dark {
    --btn-bg: rgba(255, 255, 255, 0.06);
    --btn-fg: #ffffff;
    --btn-bd: rgba(255, 255, 255, 0.18);
    --btn-bg-hover: rgba(255, 255, 255, 0.12);
}

.qf-btn-on-dark:hover { border-color: rgba(255, 255, 255, 0.32); }

.qf-btn-lg {
    font-size: 1rem;
    padding: 0.9375rem 1.5rem;
    border-radius: var(--qf-radius-md);
}

.qf-btn-sm {
    font-size: 0.8125rem;
    padding: 0.5rem 0.875rem;
}

.qf-btn-block {
    width: 100%;
}

.qf-btn-arrow::after {
    content: "→";
    font-size: 1.05em;
    transition: transform var(--qf-dur-fast) var(--qf-ease);
}

.qf-btn-arrow:hover::after {
    transform: translateX(3px);
}

/* =============================================================
 * 6. Links — animated underline
 * ============================================================= */

.qf-link {
    color: var(--qf-primary-deep);
    text-decoration: none;
    background-image: linear-gradient(currentColor, currentColor);
    background-size: 0% 1px;
    background-repeat: no-repeat;
    background-position: 0 100%;
    transition: background-size var(--qf-dur) var(--qf-ease),
                color var(--qf-dur-fast) var(--qf-ease);
    padding-bottom: 1px;
}

.qf-link:hover {
    background-size: 100% 1px;
    color: var(--qf-primary);
}

.qf-link-on-dark {
    color: #ffffff;
}

/* =============================================================
 * 7. Cards
 * ============================================================= */

.qf-card {
    background: var(--qf-paper);
    border: 1px solid var(--qf-hairline);
    border-radius: var(--qf-radius-lg);
    padding: 1.75rem;
    box-shadow: var(--qf-shadow-sm);
    transition: transform var(--qf-dur) var(--qf-ease),
                box-shadow var(--qf-dur) var(--qf-ease),
                border-color var(--qf-dur) var(--qf-ease);
    position: relative;
    overflow: hidden;
}

.qf-card-interactive:hover {
    transform: translateY(-4px);
    border-color: var(--qf-primary-edge);
    box-shadow: var(--qf-shadow-lg);
}

.qf-card-interactive::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--qf-primary), transparent);
    opacity: 0;
    transition: opacity var(--qf-dur) var(--qf-ease);
}

.qf-card-interactive:hover::after { opacity: 1; }

.qf-card-icon {
    width: 2.75rem;
    height: 2.75rem;
    border-radius: var(--qf-radius-md);
    background: linear-gradient(135deg, var(--qf-primary-soft), white);
    border: 1px solid var(--qf-primary-edge);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--qf-primary-deep);
    font-size: 1.375rem;
    margin-bottom: 1.25rem;
}

/* =============================================================
 * 8. Form inputs
 * ============================================================= */

.qf-field {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.qf-label {
    font-family: var(--qf-font-ui);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--qf-ink-muted);
    letter-spacing: 0.005em;
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 1rem;
}

.qf-label-hint {
    font-family: var(--qf-font-mono);
    font-size: 0.6875rem;
    color: var(--qf-ink-faint);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.qf-input {
    font-family: var(--qf-font-ui);
    font-size: 0.9375rem;
    color: var(--qf-ink);
    background: var(--qf-paper);
    border: 1px solid var(--qf-hairline);
    border-radius: var(--qf-radius-md);
    padding: 0.75rem 0.875rem;
    width: 100%;
    transition: border-color var(--qf-dur-fast) var(--qf-ease),
                box-shadow var(--qf-dur-fast) var(--qf-ease),
                background var(--qf-dur-fast) var(--qf-ease);
    box-shadow: var(--qf-shadow-xs);
}

.qf-input::placeholder {
    color: var(--qf-ink-ghost);
}

.qf-input:hover {
    border-color: var(--qf-ink-ghost);
}

.qf-input:focus {
    outline: none;
    border-color: var(--qf-primary);
    box-shadow: var(--qf-shadow-glow);
    background: var(--qf-paper);
}

.qf-input-with-affix {
    position: relative;
}

.qf-input-affix {
    position: absolute;
    right: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--qf-ink-faint);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--qf-radius-xs);
    transition: color var(--qf-dur-fast) var(--qf-ease);
}

.qf-input-affix:hover {
    color: var(--qf-primary);
}

.qf-message {
    border-radius: var(--qf-radius-md);
    padding: 0.75rem 0.875rem;
    font-size: 0.875rem;
    line-height: 1.45;
    border: 1px solid transparent;
}

.qf-message-error {
    background: var(--qf-rose-soft);
    color: #9f1239;
    border-color: rgba(244, 63, 94, 0.25);
}

.qf-message-success {
    background: var(--qf-mint-soft);
    color: #065f46;
    border-color: rgba(16, 185, 129, 0.25);
}

/* =============================================================
 * 9. Layout primitives
 * ============================================================= */

.qf-container {
    width: 100%;
    max-width: var(--qf-container);
    margin-inline: auto;
    padding-inline: 1.5rem;
}

.qf-container-narrow {
    width: 100%;
    max-width: var(--qf-container-narrow);
    margin-inline: auto;
    padding-inline: 1.5rem;
}

.qf-container-wide {
    width: 100%;
    max-width: var(--qf-container-wide);
    margin-inline: auto;
    padding-inline: 1.5rem;
}

.qf-section {
    padding-block: clamp(4rem, 8vw, 7rem);
    position: relative;
}

.qf-section-tight {
    padding-block: clamp(2.5rem, 5vw, 4rem);
}

.qf-grid {
    display: grid;
    gap: 1.5rem;
}

.qf-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.qf-grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

@media (max-width: 900px) {
    .qf-grid-3 { grid-template-columns: 1fr; }
    .qf-grid-2 { grid-template-columns: 1fr; }
}

/* Blueprint grid background — extremely subtle. */
.qf-blueprint {
    background-image:
        linear-gradient(rgba(15, 23, 42, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15, 23, 42, 0.04) 1px, transparent 1px);
    background-size: 32px 32px;
    background-position: -1px -1px;
}

/* Soft cyan gradient mesh for hero halos */
.qf-mesh {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
    z-index: 0;
}

.qf-mesh::before,
.qf-mesh::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.55;
}

.qf-mesh::before {
    width: 520px;
    height: 520px;
    top: -160px;
    left: -120px;
    background: radial-gradient(circle, var(--qf-primary-glow), transparent 60%);
}

.qf-mesh::after {
    width: 440px;
    height: 440px;
    bottom: -180px;
    right: -100px;
    background: radial-gradient(circle, #818cf8, transparent 60%);
    opacity: 0.4;
}

/* Hairline divider between sections */
.qf-rule {
    height: 1px;
    background: var(--qf-hairline);
    border: none;
    margin: 0;
}

/* =============================================================
 * 10. Marketing nav (top of public pages)
 * ============================================================= */

.qf-nav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.78);
    backdrop-filter: saturate(180%) blur(12px);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--qf-hairline-soft);
}

.qf-nav-inner {
    max-width: var(--qf-container);
    margin-inline: auto;
    padding: 0.875rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.qf-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    font-family: var(--qf-font-ui);
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: -0.005em;
    color: var(--qf-ink);
    text-decoration: none;
}

.qf-brand-mark {
    width: 1.625rem;
    height: 1.625rem;
    border-radius: 0.4375rem;
    background: linear-gradient(135deg, var(--qf-primary) 0%, var(--qf-primary-deep) 100%);
    display: inline-grid;
    place-items: center;
    color: white;
    font-family: var(--qf-font-mono);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0;
    box-shadow: var(--qf-shadow-press), 0 2px 6px rgba(14, 165, 233, 0.45);
}

.qf-nav-links {
    display: flex;
    align-items: center;
    gap: 1.75rem;
}

.qf-nav-link {
    font-size: 0.875rem;
    color: var(--qf-ink-soft);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--qf-dur-fast) var(--qf-ease);
}

.qf-nav-link:hover { color: var(--qf-ink); }

@media (max-width: 720px) {
    .qf-nav-links .qf-nav-link { display: none; }
}

/* =============================================================
 * 11. Hero (public pages)
 * ============================================================= */

.qf-hero {
    position: relative;
    overflow: hidden;
    padding-top: clamp(4rem, 9vw, 7rem);
    padding-bottom: clamp(4rem, 8vw, 6rem);
    background:
        radial-gradient(60% 60% at 50% 0%, rgba(14, 165, 233, 0.08), transparent 70%),
        var(--qf-paper-warm);
}

.qf-hero-inner {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 52rem;
    margin-inline: auto;
}

.qf-hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    margin-block: 1.25rem 1.5rem;
}

.qf-hero-actions {
    display: inline-flex;
    gap: 0.625rem;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 0.5rem;
}

.qf-hero-meta {
    margin-top: 2rem;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--qf-font-mono);
    font-size: 0.75rem;
    color: var(--qf-ink-faint);
    letter-spacing: 0.04em;
}

/* =============================================================
 * 12. Section heading block
 * ============================================================= */

.qf-section-head {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 3rem;
    max-width: 38rem;
}

.qf-section-head-center {
    align-items: center;
    text-align: center;
    margin-inline: auto;
}

/* =============================================================
 * 13. Pricing
 * ============================================================= */

.qf-price {
    display: flex;
    align-items: baseline;
    gap: 0.375rem;
    font-family: var(--qf-font-display);
    font-weight: 500;
    font-variation-settings: "opsz" 96, "SOFT" 0;
    color: var(--qf-ink);
}

.qf-price-amount {
    font-size: 3rem;
    line-height: 1;
    letter-spacing: -0.03em;
}

.qf-price-cadence {
    font-family: var(--qf-font-mono);
    font-size: 0.75rem;
    color: var(--qf-ink-faint);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.qf-feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.qf-feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
    font-size: 0.9375rem;
    color: var(--qf-ink-soft);
    line-height: 1.45;
}

.qf-feature-list li::before {
    content: "";
    flex-shrink: 0;
    width: 1.125rem;
    height: 1.125rem;
    border-radius: 50%;
    margin-top: 0.1875rem;
    background:
        url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23065f46' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'><polyline points='20 6 9 17 4 12'/></svg>") center/0.75rem no-repeat,
        var(--qf-mint-soft);
}

.qf-pricing-card {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.qf-pricing-card-featured {
    border-color: var(--qf-primary-edge);
    background:
        radial-gradient(120% 60% at 100% 0%, rgba(14, 165, 233, 0.10), transparent 60%),
        var(--qf-paper);
    box-shadow: var(--qf-shadow-md), 0 0 0 1px var(--qf-primary-edge);
}

/* =============================================================
 * 14. Footer (public)
 * ============================================================= */

.qf-footer {
    background: var(--qf-steel);
    color: var(--qf-ink-ghost);
    padding-block: 4rem 2rem;
    position: relative;
}

.qf-footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (max-width: 800px) {
    .qf-footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

.qf-footer h4 {
    font-family: var(--qf-font-mono);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--qf-ink-ghost);
    margin-bottom: 1.25rem;
}

.qf-footer-link {
    display: block;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.9375rem;
    margin-bottom: 0.625rem;
    transition: color var(--qf-dur-fast) var(--qf-ease);
}

.qf-footer-link:hover { color: white; }

.qf-footer .qf-brand { color: white; }

.qf-footer-meta {
    border-top: 1px solid var(--qf-steel-hairline);
    padding-top: 1.5rem;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    font-family: var(--qf-font-mono);
    font-size: 0.75rem;
    color: var(--qf-ink-faint);
}

/* =============================================================
 * 15. Auth-card (login / signup / reset shells)
 * ============================================================= */

.qf-auth-shell {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem 1.5rem;
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(50% 50% at 100% 0%, rgba(14, 165, 233, 0.10), transparent 70%),
        radial-gradient(40% 50% at 0% 100%, rgba(99, 102, 241, 0.08), transparent 70%),
        var(--qf-paper-warm);
}

.qf-auth-card {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 26rem;
    background: var(--qf-paper);
    border: 1px solid var(--qf-hairline);
    border-radius: var(--qf-radius-lg);
    padding: 2.5rem;
    box-shadow: var(--qf-shadow-lg);
}

.qf-auth-head {
    margin-bottom: 1.75rem;
    text-align: center;
}

.qf-auth-head h1 {
    /* Geist sans (not Fraunces) on auth cards — Stripe/Linear/Vercel
     * pattern. The serif Fraunces was visually editorial-heavy on a
     * small auth card; sans-serif reads as "professional product" and
     * sits better with the Geist brand lockup directly above it. */
    font-family: var(--qf-font-ui);
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: -0.012em;
    line-height: 1.2;
    color: var(--qf-ink);
    margin-block: 0.875rem 0.25rem;
}

.qf-auth-sub {
    color: var(--qf-ink-faint);
    font-size: 0.9375rem;
    line-height: 1.5;
}

.qf-auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.125rem;
}

.qf-auth-foot {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--qf-hairline-soft);
    text-align: center;
    color: var(--qf-ink-faint);
    font-size: 0.875rem;
}

.qf-auth-back {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    z-index: 2;
    color: var(--qf-ink-faint);
    text-decoration: none;
    font-size: 0.8125rem;
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    transition: color var(--qf-dur-fast) var(--qf-ease);
}

.qf-auth-back:hover { color: var(--qf-ink); }

.qf-recaptcha-notice {
    text-align: center;
    font-size: 0.6875rem;
    color: var(--qf-ink-faint);
    margin-top: 0.25rem;
    line-height: 1.5;
}

.qf-recaptcha-notice a {
    color: var(--qf-ink-soft);
    text-decoration: underline;
    text-decoration-color: var(--qf-hairline);
    text-underline-offset: 2px;
}

.qf-divider {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    color: var(--qf-ink-ghost);
    font-family: var(--qf-font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    margin-block: 1.25rem;
}

.qf-divider::before,
.qf-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--qf-hairline);
}

/* =============================================================
 * 16. Page-load reveal animations
 * ============================================================= */

@media (prefers-reduced-motion: no-preference) {
    .qf-reveal {
        opacity: 0;
        transform: translateY(12px);
        animation: qf-reveal-up var(--qf-dur-slow) var(--qf-ease) forwards;
    }

    .qf-reveal-1 { animation-delay: 60ms; }
    .qf-reveal-2 { animation-delay: 140ms; }
    .qf-reveal-3 { animation-delay: 220ms; }
    .qf-reveal-4 { animation-delay: 300ms; }
    .qf-reveal-5 { animation-delay: 380ms; }
    .qf-reveal-6 { animation-delay: 460ms; }

    @keyframes qf-reveal-up {
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
}

@media (prefers-reduced-motion: reduce) {
    .qf-reveal { opacity: 1; }
    .qf-btn:hover, .qf-card-interactive:hover { transform: none; }
}

/* =============================================================
 * 17. Quotation block
 * ============================================================= */

.qf-quote {
    border-left: 3px solid var(--qf-amber);
    background: linear-gradient(90deg, rgba(245, 158, 11, 0.06), transparent 60%);
    padding: 1.25rem 1.5rem;
    border-radius: 0 var(--qf-radius-md) var(--qf-radius-md) 0;
    font-family: var(--qf-font-display);
    font-style: italic;
    font-variation-settings: "opsz" 96, "SOFT" 60;
    font-size: 1.0625rem;
    color: var(--qf-ink-muted);
    line-height: 1.5;
}

.qf-quote-attr {
    display: block;
    margin-top: 0.625rem;
    font-family: var(--qf-font-mono);
    font-size: 0.6875rem;
    font-style: normal;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--qf-ink-faint);
}

/* =============================================================
 * 18. Skip-link refresh (accessibility)
 * ============================================================= */

.qf-skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--qf-primary-deep);
    color: white;
    padding: 8px 16px;
    z-index: 10001;
    font-size: 0.875rem;
    text-decoration: none;
    border-radius: 0 0 var(--qf-radius-sm) 0;
}

.qf-skip-link:focus { top: 0; }

*:focus-visible {
    outline: 2px solid var(--qf-primary);
    outline-offset: 2px;
}
