/* ====================================================
   NP Engineering Solutions — Custom Styles
   Font: Aptos (system font stack, common on Windows/Office)
   ==================================================== */

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Aptos', 'Calibri', 'Segoe UI', system-ui, -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* ===== NAVBAR ===== */
.hamburger-line {
    display: block;
    width: 22px;
    height: 2px;
    background-color: #1a1a1a;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

#hamburger.open .hamburger-line:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#hamburger.open .hamburger-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
#hamburger.open .hamburger-line:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

#navbar.scrolled { box-shadow: 0 2px 16px rgba(0,0,0,0.08); }

.nav-link {
    position: relative;
    padding-bottom: 2px;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: #1a1a1a;
    transition: width 0.25s ease;
}
.nav-link:hover::after,
.nav-link.active::after { width: 100%; }
.nav-link.active { color: #1a1a1a !important; }

/* ===== BUTTONS ===== */
.btn-primary {
    background-color: #1a1a1a;
    color: #ffffff;
    display: inline-block;
    transition: background-color 0.2s ease;
}
.btn-primary:hover { background-color: #333; }

.btn-outline-white {
    border: 1.5px solid rgba(255,255,255,0.45);
    color: #ffffff;
    display: inline-block;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}
.btn-outline-white:hover {
    border-color: #ffffff;
    background-color: rgba(255,255,255,0.08);
}

.btn-white {
    background-color: #ffffff;
    color: #1a1a1a;
    display: inline-block;
    transition: background-color 0.2s ease;
    text-align: center;
}
.btn-white:hover { background-color: #d9d9d9; }

/* ===== HERO ===== */
.hero-bg {
    background-color: #1a1a1a;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 48px 48px;
}

.hero-label {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #a6a6a6;
    margin-bottom: 1.25rem;
}

/* Blueprint corner marks echoing the logo aesthetic */
.corner-mark {
    position: absolute;
    width: 36px;
    height: 36px;
    pointer-events: none;
}
.corner-tl {
    top: 28px;
    left: 28px;
    border-top: 1px solid rgba(255,255,255,0.12);
    border-left: 1px solid rgba(255,255,255,0.12);
}
.corner-br {
    bottom: 28px;
    right: 28px;
    border-bottom: 1px solid rgba(255,255,255,0.12);
    border-right: 1px solid rgba(255,255,255,0.12);
}

/* ===== SECTION LABELS ===== */
.section-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: #a6a6a6;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid #d9d9d9;
}

.section-label-light {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: #a6a6a6;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.15);
}

/* ===== VALUE CARDS ===== */
.value-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background-color: #f5f5f5;
    border-left: 3px solid #1a1a1a;
}

.value-dot {
    width: 8px;
    height: 8px;
    background-color: #1a1a1a;
    flex-shrink: 0;
    margin-top: 0.35rem;
}

/* ===== SERVICES ACCORDION ===== */
.service-col-label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #a6a6a6;
    padding-bottom: 1rem;
    margin-bottom: 0.5rem;
    border-bottom: 2px solid #1a1a1a;
}

.accordion-item { border-bottom: 1px solid #d9d9d9; }
.accordion-item:last-child { border-bottom: none; }

.accordion-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 0;
    text-align: left;
    font-size: 0.925rem;
    font-weight: 600;
    color: #1a1a1a;
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.2s ease;
}
.accordion-trigger:hover { color: #4a4a4a; }

.accordion-icon {
    font-size: 1.4rem;
    font-weight: 300;
    flex-shrink: 0;
    color: #a6a6a6;
    transition: transform 0.3s ease, color 0.2s ease;
    line-height: 1;
}
.accordion-trigger[aria-expanded="true"] .accordion-icon {
    transform: rotate(45deg);
    color: #1a1a1a;
}

.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}
.accordion-content.open { max-height: 500px; }

.service-list {
    list-style: none;
    padding: 0 0 1rem 0;
    margin: 0;
}
.service-list li {
    position: relative;
    padding: 0.3rem 0 0.3rem 1.25rem;
    font-size: 0.875rem;
    color: #4a4a4a;
    line-height: 1.6;
}
.service-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: #b4b4b4;
}

/* ===== TEAM CARDS ===== */
.team-card {
    border: 1px solid #d9d9d9;
    overflow: hidden;
    transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.team-card:hover {
    box-shadow: 0 8px 28px rgba(0,0,0,0.08);
    transform: translateY(-3px);
}

.team-avatar {
    width: 100%;
    height: 220px;
    background-color: #d9d9d9;
    background-image:
        linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px);
    background-size: 20px 20px;
}

.team-role {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #a6a6a6;
}

/* ===== PROJECT CARDS ===== */
.project-card {
    background-color: #ffffff;
    border: 1px solid #d9d9d9;
    overflow: hidden;
    transition: box-shadow 0.25s ease, transform 0.25s ease;
}
.project-card:hover {
    box-shadow: 0 8px 28px rgba(0,0,0,0.08);
    transform: translateY(-3px);
}

.project-image {
    width: 100%;
    height: 200px;
    background-color: #1a1a1a;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 24px 24px;
}

.sector-badge {
    display: inline-block;
    font-size: 0.62rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #a6a6a6;
    border: 1px solid #d9d9d9;
    padding: 0.2rem 0.65rem;
}

/* ===== CONTACT FORM ===== */
.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }

.form-group label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: #a6a6a6;
}

.form-group input,
.form-group textarea {
    background-color: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.15);
    color: #ffffff;
    padding: 0.75rem 1rem;
    font-family: inherit;
    font-size: 0.925rem;
    outline: none;
    width: 100%;
    resize: vertical;
    transition: border-color 0.2s ease, background-color 0.2s ease;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #a6a6a6; }
.form-group input:focus,
.form-group textarea:focus {
    border-color: rgba(255,255,255,0.4);
    background-color: rgba(255,255,255,0.09);
}

/* ===== CONTACT DETAILS ===== */
.contact-detail-label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #a6a6a6;
    margin-bottom: 0.2rem;
}
.contact-detail-value { font-size: 1rem; color: #d9d9d9; }

/* ===== ANIMATIONS ===== */
.fade-in {
    opacity: 0;
    transform: translateY(18px);
    animation: fadeInUp 0.8s ease forwards;
}
.fade-delay-1 { animation-delay: 0.15s; }
.fade-delay-2 { animation-delay: 0.3s; }
.fade-delay-3 { animation-delay: 0.45s; }

@keyframes fadeInUp {
    to { opacity: 1; transform: translateY(0); }
}

.reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .corner-mark { display: none; }
}