/* ===========================
   Reset & Variables
   =========================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --blue-dark:   #1E3A8A;
    --blue-mid:    #2563EB;
    --blue-accent: #3B82F6;
    --blue-light:  #EFF6FF;
    --bg:          #FFFFFF;
    --bg-alt:      #F8FAFF;
    --text:        #1F2937;
    --text-muted:  #6B7280;
    --border:      #E5E7EB;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ===========================
   Navigation
   =========================== */
.navbar {
    position: sticky;
    top: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    z-index: 100;
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.logo-icon {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--blue-accent);
    font-family: 'Courier New', monospace;
    line-height: 1;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--blue-dark);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--blue-accent);
}

.hamburger {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text);
    padding: 0.25rem;
}

/* ===========================
   Button
   =========================== */
.btn {
    display: inline-block;
    background: var(--blue-accent);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
}

.btn:hover {
    background: var(--blue-dark);
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

/* ===========================
   Hero
   =========================== */
.hero {
    background: linear-gradient(135deg, var(--blue-dark) 0%, #1E40AF 55%, var(--blue-mid) 100%);
    color: white;
    padding: 7rem 0;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2.4rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    letter-spacing: -0.5px;
}

.hero h1 span {
    color: #93C5FD;
}

.hero p {
    font-size: 1.15rem;
    max-width: 580px;
    margin: 0 auto 2.5rem;
    opacity: 0.88;
    line-height: 1.7;
}

.hero .btn {
    background: white;
    color: var(--blue-dark);
    font-size: 1.05rem;
    padding: 0.9rem 2.5rem;
}

.hero .btn:hover {
    background: #DBEAFE;
    transform: translateY(-2px);
}

/* ===========================
   Section Headings
   =========================== */
.services h2,
.about h2,
.contact h2 {
    text-align: center;
    font-size: 2rem;
    color: var(--blue-dark);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 3rem;
    font-size: 1.05rem;
}

/* ===========================
   Services
   =========================== */
.services {
    padding: 5.5rem 0;
    background: var(--bg);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.5rem;
}

.service-card {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 2rem 1.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 28px rgba(30, 58, 138, 0.1);
}

.service-icon {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    display: block;
}

.service-card h3 {
    font-size: 1.1rem;
    color: var(--blue-dark);
    font-weight: 600;
    margin-bottom: 0.6rem;
}

.service-card p {
    color: var(--text-muted);
    font-size: 0.93rem;
    line-height: 1.65;
}

/* ===========================
   About
   =========================== */
.about {
    padding: 5.5rem 0;
    background: var(--bg-alt);
}

.about h2 {
    text-align: center;
    margin-bottom: 2.5rem;
}

.about-content {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 4rem;
    align-items: start;
}

.about-lead {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--blue-dark);
    margin-bottom: 1.5rem;
    line-height: 1.55;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 1rem;
    line-height: 1.75;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 1.6rem;
}

.value-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.value-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.value-item h4 {
    color: var(--blue-dark);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.value-item p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ===========================
   Contact
   =========================== */
.contact {
    padding: 5.5rem 0;
    background: var(--bg);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3.5rem;
    margin-top: 2rem;
    align-items: start;
}

.contact-info p {
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    line-height: 1.7;
    font-size: 0.97rem;
}

.contact-email {
    display: inline-block;
    color: var(--blue-accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.97rem;
    word-break: break-all;
    margin-top: 0.25rem;
    transition: color 0.2s;
}

.contact-email:hover {
    color: var(--blue-dark);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

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

.form-group label {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--text);
    letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.97rem;
    font-family: inherit;
    color: var(--text);
    background: var(--bg);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--blue-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

.contact-form .btn {
    align-self: flex-start;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--blue-dark);
    color: white;
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer .logo-icon {
    color: #93C5FD;
}

.footer .logo-text {
    color: white;
}

.footer p {
    color: #93C5FD;
    font-size: 0.88rem;
}

.footer a:not(.logo) {
    color: #93C5FD;
    text-decoration: none;
    font-size: 0.88rem;
    transition: color 0.2s;
}

.footer a:not(.logo):hover {
    color: white;
}

/* ===========================
   Animations
   =========================== */

/* Hero entrance */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hero-animate {
    opacity: 0;
    animation: fadeUp 0.7s ease forwards;
}
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.5s; }

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Nav scroll shadow */
.navbar.scrolled {
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08);
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg);
        border-bottom: 1px solid var(--border);
        padding: 1rem 1.5rem 1.5rem;
        gap: 1.1rem;
        box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    }

    .nav-links.open {
        display: flex;
    }

    .navbar {
        position: sticky;
    }

    .hero {
        padding: 4.5rem 0;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .services-grid {
        grid-template-columns: 1fr;
    }

    .hero h1 {
        font-size: 2rem;
    }
}