/* ============================================================
   Los Altillos — Precio m² Steel Framing España
   Archivo: assets/precio-steel-framing-espana.css
   Plantilla: precio-steel-framing-espana.php
   Prefijo de página: sfpe / sfmx
   ============================================================ */

/* ============================================================
   BASE DE PÁGINA
   ============================================================ */
.sfpe {
    --sfpe-orange: #C7081D;
    --sfpe-orange-soft: rgba(199, 8, 29, .08);
    --sfpe-blue: var(--color-secondary, #023778);
    --sfpe-blue-dark: var(--color-secondary-dark, #012B60);
    --sfpe-ink: var(--color-text, #0F172A);
    --sfpe-muted: var(--color-text-muted, #334155);
    --sfpe-subtle: var(--color-text-subtle, #64748B);
    --sfpe-border: var(--color-border, #E2E8F0);
    --sfpe-bg: var(--color-bg, #FFFFFF);
    --sfpe-bg-soft: var(--color-bg-secondary, #F7F8FA);
    --sfpe-card: #FFFFFF;
    --sfpe-radius: var(--radius-lg, 16px);
    --sfpe-shadow: 0 18px 48px rgba(15, 23, 42, .10);
    --sfpe-shadow-soft: 0 10px 28px rgba(15, 23, 42, .07);

    font-family: var(--font-body, 'DM Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif);
    font-size: 16px;
    line-height: 1.75;
    color: var(--sfpe-ink);
    background: var(--sfpe-bg);
}

.sfpe strong {
    color: var(--sfpe-ink);
    font-weight: 800;
}

.sfpe a {
    color: var(--sfpe-orange);
    text-decoration: none;
    font-weight: 700;
}

.sfpe a:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

.sfpe :target {
    scroll-margin-top: calc(var(--header-height, 64px) + 28px);
}

/* ============================================================
   CONTENEDORES
   ============================================================ */
.sfmx-container,
.sfmx-container-wide {
    width: min(100% - 40px, 1120px);
    margin-inline: auto;
}

.sfmx-container-wide {
    width: min(100% - 40px, 1280px);
}

.sfmx-grid-2 {
    display: grid;
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, .55fr);
    gap: 48px;
    align-items: start;
}

/* ============================================================
   HERO
   ============================================================ */
.sfmx-hero {
    position: relative;
    min-height: 680px;
    display: flex;
    align-items: flex-end;
    padding: calc(var(--header-height, 64px) + 90px) 0 76px;
    overflow: hidden;
    isolation: isolate;
    background: #07111f;
}

.sfmx-hero::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1px;
    height: 120px;
    z-index: 1;
    background: linear-gradient(180deg, rgba(255,255,255,0) 0%, #fff 100%);
    pointer-events: none;
}

.sfmx-hero__image {
    position: absolute;
    inset: 0;
    z-index: -2;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    filter: saturate(.9) contrast(1.05);
}

.sfmx-hero__overlay {
    position: absolute;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(circle at 75% 30%, rgba(199, 8, 29, .14) 0%, rgba(199, 8, 29, 0) 38%),
        linear-gradient(90deg, rgba(1, 12, 28, .94) 0%, rgba(1, 24, 54, .78) 48%, rgba(1, 24, 54, .42) 100%),
        linear-gradient(180deg, rgba(0, 0, 0, .58) 0%, rgba(0, 0, 0, .40) 55%, rgba(0, 0, 0, .88) 100%);
}

.sfmx-hero__inner {
    position: relative;
    z-index: 2;
    color: #fff;
}

.sfmx-breadcrumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 22px;
    font-size: 14px;
    line-height: 1.5;
    color: rgba(255, 255, 255, .74);
}

.sfmx-breadcrumbs a {
    color: rgba(255, 255, 255, .82);
    font-weight: 700;
}

.sfmx-breadcrumbs a:hover {
    color: #fff;
}

.sfmx-breadcrumbs span[aria-current='page'] {
    color: #fff;
    font-weight: 800;
}

.sfmx-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 26px;
}

.sfmx-tags li {
    display: inline-flex;
    align-items: center;
    min-height: 30px;
    padding: 6px 12px;
    border: 1px solid rgba(255,255,255,.22);
    border-radius: 999px;
    background: rgba(255, 255, 255, .10);
    color: #fff;
    font-size: 12px;
    line-height: 1;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: .065em;
    backdrop-filter: blur(10px);
}

.sfmx-tags li:nth-child(3),
.sfmx-tags li:nth-child(4) {
    border-color: rgba(199, 8, 29, .55);
    background: rgba(199, 8, 29, .22);
}

.sfmx-hero__title {
    max-width: 980px;
    margin: 0;
    font-family: var(--font-display, 'Archivo Black', sans-serif);
    font-size: clamp(44px, 6vw, 76px);
    line-height: .98;
    letter-spacing: -.045em;
    color: #fff;
    text-wrap: balance;
}

.sfmx-hero__subtitle,
.gx-hero__subtitle {
    max-width: 800px;
    margin-top: 22px;
    color: rgba(255,255,255,.88);
    font-size: clamp(17px, 2vw, 22px);
    line-height: 1.55;
    font-weight: 500;
}

.sfmx-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 34px;
}

.sfmx-meta li {
    min-width: 170px;
    padding: 14px 16px;
    border: 1px solid rgba(255,255,255,.18);
    border-radius: var(--radius-md, 8px);
    background: rgba(255,255,255,.10);
    box-shadow: 0 18px 50px rgba(0,0,0,.16);
    color: #fff;
    backdrop-filter: blur(14px);
    font-size: 15px;
    font-weight: 700;
}

.sfmx-meta span {
    display: block;
    margin-bottom: 4px;
    color: rgba(255,255,255,.64);
    font-size: 11px;
    line-height: 1;
    font-weight: 900;
    letter-spacing: .09em;
    text-transform: uppercase;
}

/* ============================================================
   SECCIONES Y TIPOGRAFÍA
   ============================================================ */
.sfmx-section {
    padding: 78px 0;
}

.sfmx-section--alt {
    background:
        radial-gradient(circle at top left, rgba(2, 55, 120, .045), transparent 34%),
        var(--sfpe-bg-soft);
}

.sfmx-intro {
    padding-top: 72px;
}

.sfmx-h2 {
    margin: 0 0 26px;
    font-family: var(--font-display, 'Archivo Black', sans-serif);
    font-size: clamp(34px, 4vw, 52px);
    line-height: 1.08;
    letter-spacing: -.035em;
    color: var(--sfpe-ink);
    text-wrap: balance;
}

.sfmx-h3 {
    margin: 34px 0 14px;
    font-size: clamp(22px, 2.35vw, 30px);
    line-height: 1.22;
    letter-spacing: -.02em;
    color: var(--sfpe-ink);
    font-weight: 900;
    text-wrap: balance;
}

.sfmx-prose {
    max-width: 840px;
    color: var(--sfpe-muted);
    font-size: 16px;
    line-height: 1.78;
}

.sfmx-prose p {
    margin: 0 0 20px;
}

.sfmx-prose p:last-child {
    margin-bottom: 0;
}

.sfmx-prose ul,
.sfmx-prose ol {
    list-style: revert;
    padding-left: 24px;
    margin: 18px 0 22px;
}

.sfmx-prose li {
    margin-bottom: 9px;
}

/* ============================================================
   ÍNDICE
   ============================================================ */
.sfmx-toc {
    position: sticky;
    top: calc(var(--header-height, 64px) + 22px);
    padding: 24px;
    border: 1px solid var(--sfpe-border);
    border-radius: var(--sfpe-radius);
    background: #fff;
    box-shadow: var(--sfpe-shadow-soft);
}

.sfmx-toc__title {
    margin: 0 0 14px;
    color: var(--sfpe-ink);
    font-size: 14px;
    font-weight: 900;
    letter-spacing: .09em;
    text-transform: uppercase;
}

.sfmx-toc ol {
    display: grid;
    gap: 8px;
    counter-reset: sfpe-toc;
}

.sfmx-toc li {
    counter-increment: sfpe-toc;
}

.sfmx-toc a {
    display: grid;
    grid-template-columns: 28px 1fr;
    align-items: start;
    gap: 10px;
    padding: 9px 10px;
    border-radius: 10px;
    color: var(--sfpe-muted);
    font-size: 15px;
    line-height: 1.35;
    font-weight: 800;
    transition: background var(--transition-fast, 150ms ease), color var(--transition-fast, 150ms ease), transform var(--transition-fast, 150ms ease);
}

.sfmx-toc a::before {
    content: counter(sfpe-toc, decimal-leading-zero);
    color: var(--sfpe-orange);
    font-size: 12px;
    line-height: 1.8;
    font-weight: 900;
}

.sfmx-toc a:hover {
    background: var(--sfpe-orange-soft);
    color: var(--sfpe-orange);
    text-decoration: none;
    transform: translateX(2px);
}

/* ============================================================
   TABLAS
   ============================================================ */
.sfmx-table-wrap {
    width: 100%;
    margin: 24px 0 32px;
    overflow-x: auto;
    border: 1px solid var(--sfpe-border);
    border-radius: var(--sfpe-radius);
    background: #fff;
    box-shadow: var(--sfpe-shadow-soft);
}

.sfmx-table {
    width: 100%;
    min-width: 720px;
    border-collapse: collapse;
    font-size: 16px;
    line-height: 1.55;
}

.sfmx-table th,
.sfmx-table td {
    padding: 18px 18px;
    text-align: left;
    vertical-align: top;
    border-bottom: 1px solid var(--sfpe-border);
}

.sfmx-table th {
    background: linear-gradient(180deg, #F8FAFC 0%, #EFF3F8 100%);
    color: var(--sfpe-ink);
    font-size: 14px;
    font-weight: 900;
    letter-spacing: .02em;
}

.sfmx-table td {
    color: var(--sfpe-muted);
}

.sfmx-table tbody tr:last-child td {
    border-bottom: 0;
}

.sfmx-table tbody tr:hover td {
    background: rgba(2, 55, 120, .025);
}

/* ============================================================
   CALCULADORA
   ============================================================ */
.sfmx-calc {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(280px, .6fr);
    gap: 22px;
    align-items: stretch;
    margin: 26px 0 34px;
    padding: 28px;
    border: 1px solid rgba(199, 8, 29, .18);
    border-radius: 22px;
    background:
        radial-gradient(circle at top right, rgba(199, 8, 29, .09), transparent 30%),
        #fff;
    box-shadow: var(--sfpe-shadow);
}

.sfmx-calc__row {
    display: grid;
    gap: 12px;
}

.sfmx-calc__row label,
.sfmx-calc__label {
    color: var(--sfpe-ink);
    font-size: 15px;
    font-weight: 900;
}

.sfmx-calc__input {
    display: flex;
    align-items: center;
    width: min(100%, 280px);
    border: 1px solid var(--sfpe-border);
    border-radius: 14px;
    background: #fff;
    overflow: hidden;
}

.sfmx-calc__input input {
    width: 100%;
    min-height: 54px;
    padding: 0 16px;
    border: 0;
    outline: none;
    color: var(--sfpe-ink);
    font-size: 20px;
    font-weight: 900;
    background: transparent;
}

.sfmx-calc__input span {
    min-height: 54px;
    display: inline-flex;
    align-items: center;
    padding: 0 16px;
    border-left: 1px solid var(--sfpe-border);
    background: #F8FAFC;
    color: var(--sfpe-subtle);
    font-size: 15px;
    font-weight: 900;
}

.sfmx-calc__levels {
    display: grid;
    gap: 10px;
}

.sfmx-calc__levels label {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 48px;
    padding: 13px 14px;
    border: 1px solid var(--sfpe-border);
    border-radius: 14px;
    background: #fff;
    color: var(--sfpe-muted);
    font-size: 15px;
    font-weight: 800;
    line-height: 1.35;
    cursor: pointer;
    transition: border-color var(--transition-fast, 150ms ease), background var(--transition-fast, 150ms ease), transform var(--transition-fast, 150ms ease);
}

.sfmx-calc__levels label:hover {
    border-color: rgba(199, 8, 29, .35);
    background: var(--sfpe-orange-soft);
    transform: translateY(-1px);
}

.sfmx-calc__levels input {
    width: 18px;
    height: 18px;
    accent-color: var(--sfpe-orange);
}

.sfmx-calc__result {
    grid-row: 1 / span 2;
    grid-column: 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    min-height: 170px;
    padding: 28px;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--sfpe-blue-dark) 0%, var(--sfpe-blue) 58%, #0B4AA1 100%);
    color: #fff;
    box-shadow: 0 18px 44px rgba(1, 43, 96, .22);
}

.sfmx-calc__result span {
    color: rgba(255,255,255,.72);
    font-size: 13px;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.sfmx-calc__result strong {
    color: #fff;
    font-family: var(--font-display, 'Archivo Black', sans-serif);
    font-size: clamp(36px, 4.8vw, 58px);
    line-height: 1;
    letter-spacing: -.04em;
}

/* ============================================================
   CALLOUTS, LISTAS Y CARDS
   ============================================================ */
.sfmx-callout {
    margin: 24px 0;
    padding: 22px 24px;
    border: 1px solid rgba(2, 55, 120, .16);
    border-left: 5px solid var(--sfpe-blue);
    border-radius: 0 var(--sfpe-radius) var(--sfpe-radius) 0;
    background: rgba(2, 55, 120, .045);
    color: var(--sfpe-muted);
    font-size: 16px;
    line-height: 1.7;
}

.sfmx-callout--quote {
    position: relative;
    border-color: rgba(199, 8, 29, .24);
    border-left-color: var(--sfpe-orange);
    background: linear-gradient(135deg, rgba(199, 8, 29, .075), rgba(199, 8, 29, .025));
    color: var(--sfpe-orange);
    font-size: clamp(20px, 2.2vw, 28px);
    font-weight: 900;
    line-height: 1.45;
}

.sfmx-callout--quote::before {
    content: '“';
    display: block;
    height: 24px;
    margin-bottom: 4px;
    color: rgba(199, 8, 29, .35);
    font-family: Georgia, serif;
    font-size: 64px;
    line-height: .6;
}

.sfmx-callout--warning {
    border-color: rgba(245, 158, 11, .25);
    border-left-color: var(--color-warning, #F59E0B);
    background: rgba(245, 158, 11, .08);
}

.sfmx-list-cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
    margin: 24px 0 32px;
}

.sfmx-list-cards li {
    min-height: 54px;
    padding: 14px 16px;
    border: 1px solid var(--sfpe-border);
    border-radius: 14px;
    background: #fff;
    color: var(--sfpe-muted);
    font-size: 15px;
    line-height: 1.45;
    font-weight: 800;
    box-shadow: 0 4px 14px rgba(15, 23, 42, .035);
}

.sfmx-list-cards--warning li {
    border-color: rgba(199, 8, 29, .18);
    background: rgba(199, 8, 29, .045);
}

.sfmx-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
    margin-top: 28px;
}

.sfmx-card,
.sfmx-compare__col,
.sfmx-faq article,
.fuente-card {
    padding: 28px;
    border: 1px solid var(--sfpe-border);
    border-radius: var(--sfpe-radius);
    background: #fff;
    box-shadow: var(--sfpe-shadow-soft);
}

.sfmx-card .sfmx-h3,
.sfmx-compare__col .sfmx-h3,
.sfmx-faq article .sfmx-h3 {
    margin-top: 0;
    font-size: clamp(22px, 2vw, 28px);
}

.sfmx-card p,
.sfmx-compare__col p,
.sfmx-faq article p {
    margin: 0 0 16px;
    color: var(--sfpe-muted);
    font-size: 16px;
    line-height: 1.72;
}

.sfmx-card p:last-child,
.sfmx-compare__col p:last-child,
.sfmx-faq article p:last-child {
    margin-bottom: 0;
}

.sfmx-card ul,
.sfmx-compare__col ul {
    list-style: disc;
    padding-left: 22px;
    margin: 16px 0 18px;
    color: var(--sfpe-muted);
}

.sfmx-card li,
.sfmx-compare__col li {
    margin-bottom: 8px;
    font-size: 16px;
    line-height: 1.55;
}

.sfmx-card__tag {
    display: inline-flex;
    margin-bottom: 14px;
    padding: 7px 12px;
    border-radius: 999px;
    background: var(--sfpe-orange-soft);
    color: var(--sfpe-orange);
    font-size: 12px;
    font-weight: 900;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.sfmx-card--premium {
    border-color: rgba(199, 8, 29, .25);
    background: linear-gradient(180deg, #fff 0%, rgba(199, 8, 29, .035) 100%);
}

.sfmx-compare {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    margin-top: 28px;
}

.sfmx-compare__col--highlight {
    border-color: rgba(2, 55, 120, .24);
    background: linear-gradient(180deg, #fff 0%, rgba(2, 55, 120, .045) 100%);
}

/* ============================================================
   IMÁGENES
   ============================================================ */
.sfmx-figure {
    margin: 0;
    padding: 0;
    background: var(--sfpe-bg-soft);
}

.sfmx-figure img {
    width: 100%;
    height: auto;
    max-height: 535px;
    object-fit: cover;
    border-radius: 0;
    box-shadow: none;
}

/* ============================================================
   FAQ
   ============================================================ */
.sfmx-faq {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-top: 28px;
}

.sfmx-faq article {
    position: relative;
    padding: 24px 24px 24px 28px;
}

.sfmx-faq article::before {
    content: '';
    position: absolute;
    left: 0;
    top: 24px;
    bottom: 24px;
    width: 4px;
    border-radius: 999px;
    background: var(--sfpe-orange);
}

.sfmx-faq .sfmx-h3 {
    padding-right: 18px;
    font-size: 21px;
    line-height: 1.28;
}

/* ============================================================
   FUENTES
   ============================================================ */
.fuentes-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    margin-top: 28px;
}

.fuente-card {
    min-height: 220px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    color: var(--sfpe-muted);
    font-size: 15px;
    line-height: 1.65;
}

.fuente-card strong {
    display: block;
    margin-bottom: 10px;
    color: var(--sfpe-ink);
    font-size: 18px;
    line-height: 1.25;
}

.fuente-card a {
    display: inline-flex;
    width: fit-content;
    margin-top: 14px;
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--sfpe-orange-soft);
    color: var(--sfpe-orange);
    font-size: 13px;
    font-weight: 900;
}

.fuente-card a:hover {
    background: rgba(199, 8, 29, .13);
    text-decoration: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
    .sfmx-grid-2,
    .sfmx-calc,
    .sfmx-compare,
    .fuentes-grid {
        grid-template-columns: 1fr;
    }

    .sfmx-calc__result {
        grid-row: auto;
        grid-column: auto;
    }

    .sfmx-toc {
        position: relative;
        top: auto;
    }

    .fuente-card {
        min-height: 0;
    }
}

@media (max-width: 860px) {
    .sfmx-section {
        padding: 58px 0;
    }

    .sfmx-hero {
        min-height: 620px;
        padding: calc(var(--header-height, 64px) + 62px) 0 58px;
    }

    .sfmx-cards-grid,
    .sfmx-faq,
    .sfmx-list-cards {
        grid-template-columns: 1fr;
    }

    .sfmx-table {
        min-width: 660px;
    }
}

@media (max-width: 640px) {
    .sfmx-container,
    .sfmx-container-wide {
        width: min(100% - 28px, 1120px);
    }

    .sfmx-hero {
        min-height: auto;
        align-items: flex-end;
        padding: calc(var(--header-height, 64px) + 50px) 0 48px;
    }

    .sfmx-hero::after {
        height: 70px;
    }

    .sfmx-hero__overlay {
        background:
            linear-gradient(180deg, rgba(1, 12, 28, .92) 0%, rgba(1, 24, 54, .76) 42%, rgba(1, 12, 28, .92) 100%);
    }

    .sfmx-hero__title {
        font-size: clamp(36px, 12vw, 48px);
        line-height: 1.03;
    }

    .sfmx-hero__subtitle,
    .gx-hero__subtitle {
        font-size: 16px;
        line-height: 1.6;
    }

    .sfmx-meta {
        display: grid;
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .sfmx-meta li {
        min-width: 0;
    }

    .sfmx-h2 {
        font-size: clamp(30px, 9vw, 38px);
    }

    .sfmx-h3 {
        font-size: clamp(21px, 6.5vw, 26px);
    }

    .sfmx-prose,
    .sfmx-card p,
    .sfmx-compare__col p,
    .sfmx-faq article p,
    .sfmx-table,
    .sfmx-callout {
        font-size: 16px;
    }

    .sfmx-calc,
    .sfmx-card,
    .sfmx-compare__col,
    .sfmx-faq article,
    .fuente-card,
    .sfmx-toc {
        padding: 20px;
        border-radius: 14px;
    }

    .sfmx-calc__result {
        min-height: 140px;
        padding: 22px;
    }

    .sfmx-table th,
    .sfmx-table td {
        padding: 14px;
    }
}

@media print {
    .sfmx-hero,
    .sfmx-toc,
    .sfmx-figure {
        display: none !important;
    }

    .sfmx-section {
        padding: 24px 0;
    }

    .sfmx-card,
    .sfmx-table-wrap,
    .sfmx-callout,
    .sfmx-faq article,
    .fuente-card {
        box-shadow: none;
        break-inside: avoid;
    }
}