/* ============================================================================
 * Free SEO Report Card — design system
 *
 * Aesthetic: institutional document. Ivy League transcript meets a precise
 * 1960s technical report meets a modern Stripe-grade interactive layer.
 * The brand promise is that the report you receive looks like a legitimate
 * diagnostic artifact — typeset, signed, stamped — not a dashboard.
 *
 * - Typography: Fraunces (display, opinionated serif), Public Sans (body),
 *   IBM Plex Mono (data — scores read like printed-on-paper transcript).
 * - Color: warm cream paper, deep ink, institutional green seal,
 *   single vermillion accent. NO purple-on-white gradients.
 * - Texture: subtle SVG noise so backgrounds feel like paper, not a screen.
 * - Motion: restrained — ink-drying reveals, not bouncy CSS toy energy.
 * ============================================================================ */

:root {
    /* Paper / ink */
    --paper:        #F4EFE6;
    --paper-fade:   #E8DFCB;
    --paper-deep:   #DBCFB4;
    --ink:          #1B2421;
    --ink-soft:     #3B4742;
    --ink-muted:    #6B756F;
    --rule:         #B8AC8E;
    --rule-soft:    #D4C9AF;

    /* Institutional accents */
    --seal:         #27433A;
    --seal-deep:    #1A2E27;
    --seal-mist:    #C7D6CF;

    /* Single hot accent — used sparingly for grade stamps and primary CTAs */
    --vermillion:       #C7472D;
    --vermillion-deep:  #8E2A14;
    --vermillion-tint:  #F3D7CC;

    /* Optional gold for "approved/seal" decoration */
    --gold:         #9C7B2F;
    --gold-tint:    #E8DAB1;

    /* Typography */
    --font-display: 'Fraunces', 'Source Serif Pro', Georgia, 'Times New Roman', serif;
    --font-body:    'Public Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono:    'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, Consolas, monospace;

    /* Paper texture — SVG noise as a tiled base64 image. Subtle: 5% opacity. */
    --paper-grain: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.106 0 0 0 0 0.141 0 0 0 0 0.129 0 0 0 0.05 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");
}

/* ----------------------------------------------------------------------------
 * Base — applied to every page (Razor Pages + Blazor)
 * ---------------------------------------------------------------------------- */
html {
    font-family: var(--font-body);
    color: var(--ink);
    background-color: var(--paper);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    background-color: var(--paper);
    background-image: var(--paper-grain);
    background-attachment: fixed;
    color: var(--ink);
    font-family: var(--font-body);
    font-feature-settings: "kern", "liga", "calt";
    line-height: 1.55;
}

/* Fraunces with conservative variation axes — no SOFT/WONK weirdness, default opsz.
   The expressive axes look like a "designer experiment" at heading sizes; tone them off. */
.font-display {
    font-family: var(--font-display);
    font-variation-settings: "opsz" 32;
    letter-spacing: -0.005em;
}
.font-mono-doc { font-family: var(--font-mono); font-feature-settings: "zero", "ss01"; letter-spacing: 0; }

h1, h2, h3 { font-family: var(--font-display); color: var(--ink); letter-spacing: -0.015em; line-height: 1.1; }
h1 { font-weight: 600; }
h2, h3 { font-weight: 500; }

a { color: var(--seal); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 2px; transition: color .15s; }
a:hover { color: var(--vermillion); }

/* ----------------------------------------------------------------------------
 * Document chrome — header / footer
 * ---------------------------------------------------------------------------- */
.site-header {
    border-bottom: 1px solid var(--rule);
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(8px);
    background-color: rgba(244, 239, 230, 0.92);
}

.site-mark {
    display: inline-flex;
    align-items: baseline;
    gap: 0.45rem;
    text-decoration: none;
    color: var(--ink);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.15rem;
    letter-spacing: -0.01em;
}
.site-mark .mark-seal {
    display: inline-block;
    width: 1.4rem;
    height: 1.4rem;
    background-color: var(--vermillion);
    border-radius: 50%;
    position: relative;
    transform: translateY(2px);
    box-shadow: inset 0 0 0 2px rgba(255,255,255,.12);
}
.site-mark .mark-seal::after {
    content: "✓";
    position: absolute;
    inset: 0;
    color: var(--paper);
    font-family: var(--font-display);
    font-size: 0.95rem;
    line-height: 1.4rem;
    text-align: center;
    font-weight: 700;
}
.site-mark .mark-tail {
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    transform: translateY(-0.05em);
}

.site-nav a {
    color: var(--ink-soft);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    padding: 0.4rem 0;
    border-bottom: 1px solid transparent;
    transition: color .15s, border-color .15s;
}
.site-nav a:hover {
    color: var(--ink);
    border-bottom-color: var(--vermillion);
}

.site-footer {
    border-top: 1px solid var(--rule);
    background-color: var(--paper-fade);
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    padding: 2rem 0;
}

/* ----------------------------------------------------------------------------
 * Document elements — section labels, rules, callouts
 * ---------------------------------------------------------------------------- */
.doc-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-muted);
    display: inline-block;
}

.doc-rule {
    border: 0;
    border-top: 1px solid var(--rule);
    margin: 1.5rem 0;
}
.doc-rule-double {
    border: 0;
    border-top: 1px solid var(--rule);
    border-bottom: 1px solid var(--rule);
    height: 4px;
    margin: 1.5rem 0;
}
.doc-rule-thick {
    border: 0;
    border-top: 3px solid var(--ink);
    margin: 1.25rem 0;
}

/* "Sheet" — looks like a page laid on the desk */
.doc-sheet {
    background-color: #FBF7EE;
    border: 1px solid var(--rule);
    border-radius: 2px;
    box-shadow:
        0 1px 0 rgba(27, 36, 33, 0.04),
        0 12px 24px -16px rgba(27, 36, 33, 0.18),
        0 32px 48px -28px rgba(27, 36, 33, 0.10);
    position: relative;
    overflow: hidden;
}
.doc-sheet::before {
    /* Top "official band" — slim institutional green stripe */
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--seal) 0%, var(--seal) 70%, var(--vermillion) 70%, var(--vermillion) 100%);
}

/* ----------------------------------------------------------------------------
 * Stamp — used to frame the GradeBadge externally
 * ---------------------------------------------------------------------------- */
.stamp-frame {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem 1.25rem 1.25rem;
    border: 2px solid var(--vermillion);
    border-radius: 4px;
    position: relative;
    background-color: rgba(199, 71, 45, 0.04);
    transform: rotate(-1.2deg);
}
.stamp-frame::before {
    content: "";
    position: absolute;
    inset: 6px;
    border: 1px dashed var(--vermillion);
    border-radius: 2px;
    opacity: 0.55;
    pointer-events: none;
}
.stamp-frame .stamp-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--vermillion-deep);
    margin-bottom: 0.4rem;
}
.stamp-frame .stamp-foot {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--vermillion-deep);
    margin-top: 0.3rem;
}

/* ----------------------------------------------------------------------------
 * Buttons
 * ---------------------------------------------------------------------------- */
.btn-stamp {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.85rem 1.6rem;
    background-color: var(--vermillion);
    color: var(--paper);
    border: 0;
    border-radius: 2px;
    font-family: var(--font-mono);
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background-color .12s, transform .12s, box-shadow .12s;
    box-shadow: 0 2px 0 var(--vermillion-deep);
}
.btn-stamp:hover {
    background-color: var(--vermillion-deep);
    color: var(--paper);
    transform: translateY(-1px);
    box-shadow: 0 3px 0 var(--vermillion-deep);
}
.btn-stamp:active {
    transform: translateY(1px);
    box-shadow: 0 0 0 var(--vermillion-deep);
}
.btn-stamp:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-quiet {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.7rem 1.2rem;
    background: transparent;
    color: var(--ink);
    border: 1px solid var(--ink);
    border-radius: 2px;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    cursor: pointer;
    text-decoration: none;
    transition: background-color .12s, color .12s;
}
.btn-quiet:hover {
    background-color: var(--ink);
    color: var(--paper);
}

/* ----------------------------------------------------------------------------
 * Inputs
 * ---------------------------------------------------------------------------- */
.doc-input {
    width: 100%;
    padding: 0.85rem 1rem;
    background-color: #FBF7EE;
    color: var(--ink);
    border: 1px solid var(--rule);
    border-radius: 2px;
    font-family: var(--font-mono);
    font-size: 1rem;
    letter-spacing: 0;
    transition: border-color .15s, box-shadow .15s;
}
.doc-input:focus {
    outline: none;
    border-color: var(--seal);
    box-shadow: 0 0 0 3px var(--seal-mist);
}
.doc-input::placeholder {
    color: var(--ink-muted);
    font-family: var(--font-mono);
    font-size: 0.9rem;
}

/* ----------------------------------------------------------------------------
 * Metric block — hairline rule + display number + caption
 * ---------------------------------------------------------------------------- */
.metric-block {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    border-left: 3px solid var(--vermillion);
    padding: 0.25rem 0 0.25rem 1rem;
}
.metric-block .metric-figure {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 2.5rem;
    line-height: 1;
    color: var(--ink);
    letter-spacing: -0.02em;
}
.metric-block .metric-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--ink-muted);
    margin-top: 0.4rem;
}

/* ----------------------------------------------------------------------------
 * Animations — used sparingly
 * ---------------------------------------------------------------------------- */
@keyframes ink-rise {
    from { opacity: 0; transform: translateY(4px); }
    to   { opacity: 1; transform: translateY(0); }
}
.animate-ink {
    animation: ink-rise 600ms cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
@keyframes stamp-thump {
    0%   { transform: rotate(-1.2deg) scale(0.92); opacity: 0; }
    65%  { transform: rotate(-1.2deg) scale(1.04); opacity: 1; }
    100% { transform: rotate(-1.2deg) scale(1); }
}
.animate-stamp { animation: stamp-thump 520ms cubic-bezier(0.2, 0.9, 0.4, 1) both; }

/* ----------------------------------------------------------------------------
 * Blazor focus / validation defaults
 * ---------------------------------------------------------------------------- */
h1:focus { outline: none; }
.valid.modified:not([type=checkbox]) { outline: 1px solid var(--seal); }
.invalid { outline: 1px solid var(--vermillion); }
.validation-message { color: var(--vermillion); }

.blazor-error-boundary {
    background: var(--vermillion-deep);
    color: var(--paper);
    padding: 1rem;
    font-family: var(--font-mono);
}

/* ----------------------------------------------------------------------------
 * Print
 * ---------------------------------------------------------------------------- */
@media print {
    body { background: white; background-image: none; }
    .site-header, .site-footer, .no-print { display: none !important; }
    .doc-sheet { box-shadow: none; border-color: #999; }
}