/* ============================================================
   MEJORAS — Components added in the credibility upgrade
   Team cards, case studies, blog cards, contact form,
   certifications grid. Uses existing CSS variables & palette.
   ============================================================ */

/* ---------- Page hero (reusable for Team / Blog / Contact) ---------- */
.page-hero {
    padding: 9rem 1.5rem 4rem;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    border-bottom: 1px solid var(--color-border);
}

.page-hero__eyebrow {
    display: inline-block;
    color: var(--color-accent);
    font-weight: var(--font-bold);
    letter-spacing: 0.22em;
    text-transform: uppercase;
    font-size: 0.7rem;
    margin-bottom: 1rem;
}

.page-hero__title {
    font-size: 2.25rem;
    font-weight: var(--font-bold);
    color: var(--color-secondary);
    line-height: 1.15;
    margin-bottom: 1rem;
}

.page-hero__lead {
    font-size: 1.125rem;
    color: var(--color-text);
    line-height: 1.65;
    max-width: 44rem;
}

.page-hero__accent {
    height: 4px;
    width: 64px;
    background: var(--color-accent);
    border-radius: 999px;
    margin-bottom: 1.5rem;
}

@media (min-width: 768px) {
    .page-hero {
        padding: 11rem 1.5rem 5rem;
    }
    .page-hero__title {
        font-size: 3rem;
    }
}

/* ---------- Team cards ---------- */
.team-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(1, 1fr);
}

@media (min-width: 640px) {
    .team-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .team-grid { grid-template-columns: repeat(4, 1fr); }
}

.team-card {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2rem 1.75rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
    height: 100%;
}

.team-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 20px 40px rgba(0, 103, 184, 0.12);
    transform: translateY(-4px);
}

.team-card__avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    margin-bottom: 1.25rem;
    box-shadow: 0 6px 16px rgba(0, 103, 184, 0.2);
    background: linear-gradient(135deg, var(--color-accent) 0%, #004e8e 100%);
}

.team-card__name {
    font-size: 1.125rem;
    font-weight: var(--font-bold);
    color: var(--color-secondary);
    margin-bottom: 0.35rem;
    line-height: 1.3;
}

.team-card__role {
    color: var(--color-accent);
    font-size: 0.85rem;
    font-weight: var(--font-semibold);
    letter-spacing: 0.04em;
    margin-bottom: 1rem;
    min-height: 2.6em;
}

.team-card__bio {
    color: var(--color-text);
    font-size: 0.875rem;
    line-height: 1.55;
    margin-bottom: 1.25rem;
    flex-grow: 1;
}

.team-card__certs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.35rem;
    margin-bottom: 1.25rem;
}

.team-card__cert {
    font-size: 0.68rem;
    letter-spacing: 0.06em;
    font-weight: var(--font-bold);
    background: rgba(0, 103, 184, 0.08);
    color: var(--color-accent);
    padding: 0.3rem 0.55rem;
    border-radius: 999px;
    border: 1px solid rgba(0, 103, 184, 0.15);
}

.team-card__links {
    display: flex;
    gap: 0.75rem;
    margin-top: auto;
}

.team-card__link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #f2f6fb;
    color: var(--color-accent);
    transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
    border: 1px solid var(--color-border);
}

.team-card__link:hover {
    background: var(--color-accent);
    color: #ffffff;
    transform: translateY(-2px);
}

/* ---------- Case studies (Proven Results) ---------- */
.case-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(1, 1fr);
}

@media (min-width: 768px) {
    .case-grid { grid-template-columns: repeat(3, 1fr); }
}

.case-card {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
    height: 100%;
}

.case-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 20px 40px rgba(0, 103, 184, 0.15);
    transform: translateY(-4px);
}

.case-card__icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(0, 103, 184, 0.1) 0%, rgba(0, 103, 184, 0.05) 100%);
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    font-size: 1.5rem;
    margin-bottom: 1.25rem;
}

.case-card__tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    background: rgba(0, 103, 184, 0.08);
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    margin-bottom: 0.9rem;
}

.case-card__title {
    font-size: 1.1rem;
    font-weight: var(--font-bold);
    color: var(--color-secondary);
    line-height: 1.35;
    margin-bottom: 0.8rem;
}

.case-card__description {
    font-size: 0.925rem;
    color: var(--color-text);
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.case-card__metrics {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    border-top: 1px solid var(--color-border);
    padding-top: 1rem;
}

.case-card__metric {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--color-secondary);
    font-size: 0.85rem;
    font-weight: var(--font-semibold);
}

.case-card__metric-badge {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 999px;
    background: var(--color-accent);
    color: #ffffff;
    font-size: 0.65rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* ---------- Blog cards ---------- */
.blog-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(1, 1fr);
}

@media (min-width: 768px) {
    .blog-grid { grid-template-columns: repeat(3, 1fr); }
}

.blog-card {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal), transform var(--transition-normal);
    height: 100%;
}

.blog-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 20px 40px rgba(0, 103, 184, 0.15);
    transform: translateY(-4px);
}

.blog-card__media {
    position: relative;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, #0067b8 0%, #0a4578 100%);
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    padding: 1.5rem;
}

.blog-card__media::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.18) 0%, transparent 40%),
        radial-gradient(circle at 80% 70%, rgba(255,255,255,0.08) 0%, transparent 50%);
    pointer-events: none;
}

.blog-card__media--alt {
    background: linear-gradient(135deg, #005da6 0%, #081f3d 100%);
}

.blog-card__media--deep {
    background: linear-gradient(135deg, #2563eb 0%, #0a1e42 100%);
}

.blog-card__media-title {
    position: relative;
    color: #ffffff;
    font-size: 1.25rem;
    font-weight: var(--font-bold);
    line-height: 1.25;
    letter-spacing: -0.01em;
    text-shadow: 0 2px 10px rgba(0,0,0,0.25);
    z-index: 1;
}

.blog-card__body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.blog-card__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    font-size: 0.75rem;
    color: var(--color-text);
    margin-bottom: 0.85rem;
    align-items: center;
}

.blog-card__tag {
    font-size: 0.68rem;
    font-weight: var(--font-bold);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-accent);
    background: rgba(0, 103, 184, 0.08);
    padding: 0.25rem 0.55rem;
    border-radius: 999px;
}

.blog-card__title {
    font-size: 1.1rem;
    font-weight: var(--font-bold);
    color: var(--color-secondary);
    line-height: 1.35;
    margin-bottom: 0.75rem;
}

.blog-card__excerpt {
    color: var(--color-text);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
    flex-grow: 1;
}

.blog-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    border-top: 1px solid var(--color-border);
    padding-top: 1rem;
    margin-top: auto;
}

.blog-card__author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--color-text);
}

.blog-card__author-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-accent) 0%, #004e8e 100%);
    color: #ffffff;
    font-size: 0.7rem;
    font-weight: var(--font-bold);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.blog-card__cta {
    font-size: 0.8rem;
    font-weight: var(--font-bold);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    transition: gap var(--transition-fast);
}

.blog-card__cta:hover {
    gap: 0.6rem;
}

/* ---------- Contact page ---------- */
.contact-layout {
    display: grid;
    gap: 2.5rem;
    grid-template-columns: 1fr;
}

@media (min-width: 1024px) {
    .contact-layout {
        grid-template-columns: 3fr 2fr;
    }
}

.contact-form {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 2rem;
}

@media (min-width: 768px) {
    .contact-form { padding: 2.5rem; }
}

.contact-form__grid {
    display: grid;
    gap: 1.25rem;
    grid-template-columns: 1fr;
}

@media (min-width: 640px) {
    .contact-form__grid { grid-template-columns: 1fr 1fr; }
    .contact-form__field--full { grid-column: 1 / -1; }
}

.contact-form__field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.contact-form__label {
    font-size: 0.82rem;
    font-weight: var(--font-semibold);
    color: var(--color-secondary);
}

.contact-form__label .req {
    color: var(--color-accent);
    margin-left: 0.15rem;
}

.contact-form__input,
.contact-form__select,
.contact-form__textarea {
    width: 100%;
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 0.75rem 0.95rem;
    font-size: 0.95rem;
    color: var(--color-secondary);
    font-family: inherit;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.contact-form__textarea {
    min-height: 140px;
    resize: vertical;
}

.contact-form__input:focus,
.contact-form__select:focus,
.contact-form__textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(0, 103, 184, 0.15);
}

.contact-form__input[aria-invalid="true"],
.contact-form__textarea[aria-invalid="true"],
.contact-form__select[aria-invalid="true"] {
    border-color: #c0392b;
    box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.12);
}

.contact-form__error {
    color: #c0392b;
    font-size: 0.78rem;
    min-height: 1em;
}

.contact-form__consent {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    font-size: 0.82rem;
    color: var(--color-text);
    line-height: 1.5;
}

.contact-form__consent input {
    margin-top: 0.2rem;
    accent-color: var(--color-accent);
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.contact-form__submit {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--color-accent);
    color: #ffffff;
    font-weight: var(--font-bold);
    border: none;
    padding: 0.9rem 1.75rem;
    border-radius: 999px;
    cursor: pointer;
    font-size: 0.95rem;
    transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    letter-spacing: 0.02em;
}

.contact-form__submit:hover {
    background: var(--color-hover);
    transform: translateY(-2px);
    box-shadow: 0 14px 30px rgba(0, 103, 184, 0.25);
}

.contact-form__submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.contact-form__status {
    margin-top: 1rem;
    padding: 0.85rem 1rem;
    border-radius: 8px;
    font-size: 0.88rem;
    display: none;
}

.contact-form__status--ok {
    background: rgba(34, 197, 94, 0.08);
    border: 1px solid rgba(34, 197, 94, 0.25);
    color: #166534;
    display: block;
}

.contact-form__status--err {
    background: rgba(192, 57, 43, 0.08);
    border: 1px solid rgba(192, 57, 43, 0.25);
    color: #991b1b;
    display: block;
}

.contact-side {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-side__block {
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 1.75rem;
}

.contact-side__block--accent {
    background: linear-gradient(135deg, var(--color-accent) 0%, #004e8e 100%);
    color: #ffffff;
    border-color: transparent;
}

.contact-side__title {
    font-size: 0.8rem;
    font-weight: var(--font-bold);
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.contact-side__block--accent .contact-side__title {
    color: rgba(255, 255, 255, 0.85);
}

.contact-side__text {
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.6;
}

.contact-side__block--accent .contact-side__text {
    color: rgba(255, 255, 255, 0.9);
}

.contact-side__link {
    color: var(--color-accent);
    font-weight: var(--font-semibold);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.contact-side__link:hover {
    color: var(--color-hover);
}

.contact-side__list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.contact-side__list li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: var(--color-text);
}

.contact-side__list i {
    color: var(--color-accent);
    width: 1.1rem;
    text-align: center;
}

.contact-side__cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #ffffff;
    color: var(--color-accent);
    font-weight: var(--font-bold);
    padding: 0.75rem 1.4rem;
    border-radius: 999px;
    margin-top: 0.75rem;
    font-size: 0.9rem;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.contact-side__cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.18);
}

/* ---------- Certifications (About page) ---------- */
.cert-grid {
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(2, 1fr);
    max-width: 64rem;
    margin: 0 auto;
}

@media (min-width: 640px) {
    .cert-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
    .cert-grid { grid-template-columns: repeat(5, 1fr); }
}

.cert-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    text-align: center;
    padding: 1.5rem 1rem;
    min-height: 120px;
    background: rgba(0, 103, 184, 0.06);
    border: 1px solid rgba(0, 103, 184, 0.18);
    border-radius: 12px;
    color: var(--color-accent);
    font-weight: var(--font-bold);
    transition: background var(--transition-normal), transform var(--transition-normal), border-color var(--transition-normal);
}

.cert-badge:hover {
    background: rgba(0, 103, 184, 0.1);
    border-color: var(--color-accent);
    transform: translateY(-3px);
}

.cert-badge__icon {
    font-size: 1.5rem;
    margin-bottom: 0.15rem;
}

.cert-badge__name {
    font-size: 0.95rem;
    letter-spacing: 0.04em;
    line-height: 1.2;
}

.cert-badge__meta {
    font-size: 0.68rem;
    color: var(--color-text);
    font-weight: var(--font-medium);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

/* ---------- AI Section (home + reusable) ---------- */
.ai-section {
    position: relative;
    background: linear-gradient(135deg, #071a33 0%, #0a2547 50%, #081d38 100%);
    color: #f8fafc;
    overflow: hidden;
    padding-top: 6rem;
    padding-bottom: 6rem;
}

.ai-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 15% 20%, rgba(37, 99, 235, 0.25) 0%, transparent 45%),
        radial-gradient(circle at 85% 80%, rgba(14, 165, 233, 0.18) 0%, transparent 50%);
    pointer-events: none;
    opacity: 0.9;
}

.ai-section > * { position: relative; z-index: 1; }

.ai-section__eyebrow {
    color: #60a5fa;
    font-weight: var(--font-bold);
    letter-spacing: 0.22em;
    text-transform: uppercase;
    font-size: 0.72rem;
    margin-bottom: 1rem;
    display: inline-block;
}

.ai-section__title {
    color: #ffffff;
    font-size: 2rem;
    font-weight: var(--font-bold);
    line-height: 1.2;
}

@media (min-width: 768px) {
    .ai-section__title { font-size: 2.5rem; }
}

.ai-section__lead {
    color: rgba(255, 255, 255, 0.78);
    font-size: 1.05rem;
    line-height: 1.7;
    max-width: 56rem;
    margin: 1rem auto 0;
}

.ai-section__lead strong { color: #ffffff; }

.ai-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: 1fr;
    margin-top: 3rem;
}

@media (min-width: 768px) {
    .ai-grid { grid-template-columns: repeat(2, 1fr); }
}

.ai-card {
    background: rgba(255, 255, 255, 0.04);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 14px;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    transition: border-color var(--transition-normal), transform var(--transition-normal), background var(--transition-normal);
}

.ai-card:hover {
    border-color: #60a5fa;
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.07);
}

.ai-card__icon {
    width: 64px;
    height: 64px;
    border-radius: 14px;
    background: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: #ffffff;
    margin-bottom: 1.5rem;
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.35);
}

.ai-card__title {
    color: #ffffff;
    font-size: 1.4rem;
    font-weight: var(--font-bold);
    margin-bottom: 0.85rem;
    line-height: 1.3;
}

.ai-card__description {
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.65;
    margin-bottom: 1.4rem;
    font-size: 0.95rem;
}

.ai-card__list {
    list-style: none;
    padding: 0;
    margin: 0 0 1.25rem 0;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.ai-card__list li {
    color: rgba(255, 255, 255, 0.88);
    font-size: 0.9rem;
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    gap: 0.7rem;
}

.ai-card__list i {
    color: #60a5fa;
    margin-top: 0.3rem;
    flex-shrink: 0;
    font-size: 0.85rem;
}

.ai-card__cert {
    margin-top: auto;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.6rem 0.95rem;
    background: rgba(96, 165, 250, 0.12);
    border: 1px solid rgba(96, 165, 250, 0.35);
    border-radius: 999px;
    color: #bfdbfe;
    font-size: 0.8rem;
    font-weight: var(--font-bold);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    align-self: flex-start;
}

.ai-card__cert i {
    color: #60a5fa;
}

/* Certification badge on the About page tuned for AI emphasis */
.cert-badge--ai {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.08) 0%, rgba(37, 99, 235, 0.1) 100%);
    border-color: rgba(37, 99, 235, 0.28);
}

.cert-badge--ai:hover {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.14) 0%, rgba(37, 99, 235, 0.18) 100%);
}

/* WCAG 2.4.1 — Skip Navigation */
.skip-link {
    position: absolute;
    left: -10000px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}
.skip-link:focus {
    position: fixed;
    left: 16px;
    top: 16px;
    z-index: 9999;
    width: auto;
    height: auto;
    padding: 12px 20px;
    background: var(--color-accent, #0067b8);
    color: #fff;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    outline: 2px solid #fff;
}
.sr-only:not(:focus):not(:active) {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}