/**
 * Rendaforte — main.css
 * CSS Custom Properties + Typography + Content Blocks (prefix: invalt)
 * P2P Lending Portal — PT/Portugal
 */

/* ==========================================================================
   CSS CUSTOM PROPERTIES (--rf-*)
   ========================================================================== */

:root {
    /* Palette */
    --rf-primary:      #0B4F6C;
    --rf-secondary:    #E4D5B7;
    --rf-accent:       #F95738;
    --rf-accent-soft:  #FEF0EC;
    --rf-bg:           #F4F9FC;
    --rf-surface:      #FFFFFF;
    --rf-text:         #0D2533;
    --rf-muted:        #4D7080;
    --rf-border:       #C8DCE8;
    --rf-success:      #1F7A4F;
    --rf-danger:       #C4391E;

    /* Shadows */
    --rf-shadow:       0 2px 12px rgba(11,79,108,.08);
    --rf-shadow-md:    0 4px 24px rgba(11,79,108,.12);
    --rf-shadow-lg:    0 8px 40px rgba(11,79,108,.16);

    /* Shape */
    --rf-radius:       8px;
    --rf-radius-sm:    4px;
    --rf-radius-lg:    16px;
    --rf-radius-xl:    24px;

    /* Typography */
    --rf-font-head:    'Newsreader', Georgia, serif;
    --rf-font-body:    'Public Sans', system-ui, -apple-system, sans-serif;

    /* Layout */
    --rf-maxw:         1160px;
    --rf-gap:          2rem;

    /* Transitions */
    --rf-trans:        all .2s ease;
    --rf-trans-slow:   all .4s ease;
}

/* ==========================================================================
   RESET & BASE
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--rf-font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--rf-text);
    background-color: var(--rf-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, video, svg {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--rf-primary);
    text-decoration: none;
    transition: var(--rf-trans);
}

a:hover {
    color: var(--rf-accent);
}

ul, ol {
    padding-left: 1.5rem;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--rf-font-head);
    font-weight: 700;
    line-height: 1.25;
    color: var(--rf-text);
    margin-bottom: .5em;
}

h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.75rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    max-width: 70ch;
}

strong { font-weight: 700; }
em     { font-style: italic; }

small, .rf-small {
    font-size: .875rem;
    color: var(--rf-muted);
}

/* ==========================================================================
   CONTENT BLOCKS — prefix: invalt
   ========================================================================== */

/* Quick Answer — Resposta Rápida (AEO block) */
.invalt-qa {
    background: var(--rf-surface);
    border-left: 4px solid var(--rf-primary);
    border-radius: 0 var(--rf-radius) var(--rf-radius) 0;
    padding: 1.25rem 1.5rem;
    margin: 1.75rem 0;
    box-shadow: var(--rf-shadow);
    position: relative;
}

.invalt-qa::before {
    content: '▸ Resposta Rápida';
    display: block;
    font-family: var(--rf-font-body);
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--rf-primary);
    margin-bottom: .5rem;
}

.invalt-qa p:last-child {
    margin-bottom: 0;
}

/* Pros & Cons */
.invalt-proscons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 1.75rem 0;
}

.invalt-pros,
.invalt-cons {
    background: var(--rf-surface);
    border-radius: var(--rf-radius);
    padding: 1.25rem;
    box-shadow: var(--rf-shadow);
}

.invalt-pros {
    border-top: 3px solid var(--rf-success);
}

.invalt-cons {
    border-top: 3px solid var(--rf-danger);
}

.invalt-pros h4,
.invalt-cons h4 {
    font-size: 1rem;
    margin-bottom: .75rem;
    display: flex;
    align-items: center;
    gap: .4rem;
}

.invalt-pros h4::before {
    content: '✓';
    color: var(--rf-success);
}

.invalt-cons h4::before {
    content: '✗';
    color: var(--rf-danger);
}

.invalt-pros ul,
.invalt-cons ul {
    padding-left: 1.25rem;
    margin: 0;
}

.invalt-pros li { color: var(--rf-success); }
.invalt-cons li { color: var(--rf-danger); }
.invalt-pros li span,
.invalt-cons li span { color: var(--rf-text); }

/* Table Wrapper */
.invalt-tablewrap {
    overflow-x: auto;
    margin: 1.75rem 0;
    border-radius: var(--rf-radius);
    box-shadow: var(--rf-shadow);
}

.invalt-table {
    width: 100%;
    border-collapse: collapse;
    font-size: .925rem;
    background: var(--rf-surface);
}

.invalt-table th {
    background: var(--rf-primary);
    color: #fff;
    padding: .75rem 1rem;
    text-align: left;
    font-family: var(--rf-font-body);
    font-weight: 600;
    font-size: .8rem;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.invalt-table td {
    padding: .7rem 1rem;
    border-bottom: 1px solid var(--rf-border);
    color: var(--rf-text);
}

.invalt-table tr:last-child td {
    border-bottom: none;
}

.invalt-table tr:hover td {
    background: var(--rf-bg);
}

.invalt-table .invalt-table-badge {
    display: inline-block;
    padding: .2rem .6rem;
    border-radius: 999px;
    font-size: .75rem;
    font-weight: 600;
}

/* FAQ Accordion */
.invalt-faq {
    margin: 1.75rem 0;
}

.invalt-faq-item {
    background: var(--rf-surface);
    border: 1px solid var(--rf-border);
    border-radius: var(--rf-radius);
    margin-bottom: .5rem;
    overflow: hidden;
    transition: var(--rf-trans);
}

.invalt-faq-item.is-open {
    border-color: var(--rf-primary);
    box-shadow: var(--rf-shadow);
}

.invalt-faq-q {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    cursor: pointer;
    font-weight: 600;
    font-size: .975rem;
    color: var(--rf-text);
    user-select: none;
    gap: 1rem;
    transition: var(--rf-trans);
}

.invalt-faq-q:hover {
    color: var(--rf-primary);
}

.invalt-faq-q::after {
    content: '+';
    font-size: 1.25rem;
    font-weight: 300;
    color: var(--rf-primary);
    flex-shrink: 0;
    transition: var(--rf-trans);
}

.invalt-faq-item.is-open .invalt-faq-q::after {
    content: '−';
    transform: none;
}

.invalt-faq-a {
    padding: 0 1.25rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .35s ease;
}

.invalt-faq-item.is-open .invalt-faq-a {
    padding: 0 1.25rem 1.25rem;
    max-height: 1000px;
}

.invalt-faq-a p:last-child {
    margin-bottom: 0;
}

/* Note / Quote / Disclaimer */
.invalt-note {
    background: #EFF7FD;
    border-radius: var(--rf-radius);
    padding: 1rem 1.25rem;
    margin: 1.25rem 0;
    border-left: 3px solid var(--rf-secondary);
    font-size: .9rem;
}

.invalt-quote {
    border-left: 4px solid var(--rf-accent);
    background: var(--rf-accent-soft);
    padding: 1.25rem 1.5rem;
    margin: 1.75rem 0;
    border-radius: 0 var(--rf-radius) var(--rf-radius) 0;
    font-family: var(--rf-font-head);
    font-style: italic;
    font-size: 1.1rem;
    color: var(--rf-text);
}

.invalt-quote cite {
    display: block;
    font-style: normal;
    font-family: var(--rf-font-body);
    font-size: .85rem;
    font-weight: 600;
    color: var(--rf-muted);
    margin-top: .5rem;
}

.invalt-disc {
    background: var(--rf-bg);
    border: 1px solid var(--rf-border);
    border-radius: var(--rf-radius-sm);
    padding: .75rem 1rem;
    font-size: .8rem;
    color: var(--rf-muted);
    margin: 1rem 0;
}

/* Hearts Rating Display */
.invalt-hearts,
.rf-hearts {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    line-height: 1;
}

.rf-heart {
    font-size: 1.25rem;
    transition: transform .15s ease;
    display: inline-block;
}

.rf-heart-full {
    color: var(--rf-accent);
}

.rf-heart-half {
    color: var(--rf-accent);
    opacity: .6;
}

.rf-heart-empty {
    color: var(--rf-border);
}

/* Heart pulse animation on hover */
.invalt-hearts:hover .rf-heart-full,
.rf-hearts:hover .rf-heart-full {
    animation: rf-heart-pulse .4s ease infinite alternate;
}

@keyframes rf-heart-pulse {
    0%   { transform: scale(1); }
    100% { transform: scale(1.2); }
}

/* Staggered pulse for individual hearts */
.rf-heart-full:nth-child(1) { animation-delay: 0ms; }
.rf-heart-full:nth-child(2) { animation-delay: 60ms; }
.rf-heart-full:nth-child(3) { animation-delay: 120ms; }
.rf-heart-full:nth-child(4) { animation-delay: 180ms; }
.rf-heart-full:nth-child(5) { animation-delay: 240ms; }

/* Score Badge */
.invalt-score {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--rf-accent);
    color: #fff;
    font-family: var(--rf-font-head);
    font-weight: 700;
    font-size: 1.1rem;
    min-width: 3rem;
    height: 3rem;
    border-radius: var(--rf-radius);
    padding: 0 .75rem;
    line-height: 1;
}

.invalt-score.invalt-score-sm {
    font-size: .9rem;
    min-width: 2.25rem;
    height: 2.25rem;
}

.invalt-score.invalt-score-lg {
    font-size: 1.5rem;
    min-width: 4rem;
    height: 4rem;
    border-radius: var(--rf-radius-lg);
}

/* Authors */
.invalt-authors {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 1.5rem 0;
}

.invalt-author {
    display: flex;
    align-items: center;
    gap: .75rem;
    background: var(--rf-surface);
    border: 1px solid var(--rf-border);
    border-radius: var(--rf-radius);
    padding: .75rem 1rem;
}

.invalt-author img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}

.invalt-author-info {
    display: flex;
    flex-direction: column;
}

.invalt-author-name {
    font-weight: 600;
    font-size: .925rem;
    color: var(--rf-text);
}

.invalt-author-role {
    font-size: .8rem;
    color: var(--rf-muted);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.rf-btn {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    padding: .75rem 1.75rem;
    border-radius: var(--rf-radius);
    font-family: var(--rf-font-body);
    font-size: .925rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--rf-trans);
    text-decoration: none;
    line-height: 1.2;
    white-space: nowrap;
}

.rf-btn-primary {
    background: var(--rf-accent);
    color: #fff;
    border-color: var(--rf-accent);
}

.rf-btn-primary:hover {
    background: #e04020;
    border-color: #e04020;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(249,87,56,.35);
}

.rf-btn-secondary {
    background: transparent;
    color: var(--rf-primary);
    border-color: var(--rf-primary);
}

.rf-btn-secondary:hover {
    background: var(--rf-primary);
    color: #fff;
}

.rf-btn-ghost {
    background: transparent;
    color: var(--rf-muted);
    border-color: var(--rf-border);
}

.rf-btn-ghost:hover {
    border-color: var(--rf-primary);
    color: var(--rf-primary);
}

.rf-btn-sm {
    padding: .45rem 1rem;
    font-size: .825rem;
}

.rf-btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.05rem;
}

/* ==========================================================================
   BADGES & LABELS
   ========================================================================== */

.rf-badge {
    display: inline-block;
    padding: .25rem .65rem;
    border-radius: 999px;
    font-size: .75rem;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.rf-badge-primary  { background: var(--rf-primary);     color: #fff; }
.rf-badge-accent   { background: var(--rf-accent);      color: #fff; }
.rf-badge-success  { background: var(--rf-success);     color: #fff; }
.rf-badge-muted    { background: var(--rf-bg);           color: var(--rf-muted); border: 1px solid var(--rf-border); }
.rf-badge-outline  { background: transparent; border: 1px solid var(--rf-primary); color: var(--rf-primary); }

/* ==========================================================================
   UTILITIES
   ========================================================================== */

.rf-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

.rf-text-primary  { color: var(--rf-primary); }
.rf-text-accent   { color: var(--rf-accent); }
.rf-text-muted    { color: var(--rf-muted); }
.rf-text-success  { color: var(--rf-success); }
.rf-text-danger   { color: var(--rf-danger); }

.rf-bg-surface    { background: var(--rf-surface); }
.rf-bg-bg         { background: var(--rf-bg); }

.rf-flex-center   { display: flex; align-items: center; justify-content: center; }
.rf-flex-between  { display: flex; align-items: center; justify-content: space-between; }

.rf-mt-1 { margin-top: .5rem; }
.rf-mt-2 { margin-top: 1rem; }
.rf-mt-3 { margin-top: 1.5rem; }
.rf-mt-4 { margin-top: 2rem; }

.rf-mb-1 { margin-bottom: .5rem; }
.rf-mb-2 { margin-bottom: 1rem; }
.rf-mb-3 { margin-bottom: 1.5rem; }
.rf-mb-4 { margin-bottom: 2rem; }

.rf-section-title {
    font-family: var(--rf-font-head);
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--rf-text);
    margin-bottom: .5rem;
}

.rf-section-sub {
    color: var(--rf-muted);
    font-size: 1.05rem;
    margin-bottom: 2rem;
    max-width: 56ch;
}

.rf-divider {
    height: 1px;
    background: var(--rf-border);
    margin: 2rem 0;
    border: none;
}

/* Counter animation */
.rf-counter {
    font-family: var(--rf-font-head);
    font-weight: 700;
    color: var(--rf-accent);
}