html {
    font-size: 14px;
    scroll-behavior: smooth;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

html {
    position: relative;
    min-height: 100%;
}

body {
    padding-top: 66px;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: #2c3e50;
}

/* ── Brand / design tokens ── */
:root {
    --rc-navy:   #0d1f33;
    --rc-dark:   #112840;
    --rc-blue:   #1a6fa0;
    --rc-accent: #00aaff;
    --rc-glow:   rgba(0, 170, 255, 0.25);
    --rc-light:  #f0f6fc;
    --rc-card-bg:#ffffff;
}

/* ── Navbar ── */
.rc-navbar {
    background: rgba(13, 31, 51, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0, 170, 255, 0.15);
    box-shadow: 0 2px 24px rgba(0,0,0,0.4);
}

.rc-brand-text  { color: #fff; font-size: 1.3rem; letter-spacing: -0.5px; }
.rc-brand-accent{ color: var(--rc-accent); font-size: 1.3rem; text-shadow: 0 0 12px var(--rc-glow); }

.rc-navbar .nav-link {
    color: rgba(255,255,255,0.8) !important;
    font-weight: 500;
    padding: 0.45rem 1rem;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
}
.rc-navbar .nav-link:hover {
    color: var(--rc-accent) !important;
    background: rgba(0,170,255,0.08);
}

/* ── Hero ── */
.rc-hero {
    min-height: calc(100vh - 66px);
    background:
        radial-gradient(ellipse 80% 60% at 50% 40%, rgba(0,100,200,0.18) 0%, transparent 70%),
        linear-gradient(160deg, var(--rc-navy) 0%, #0a2540 45%, #0d3560 100%);
    color: #fff;
    padding: 4rem 1rem;
    position: relative;
    overflow: hidden;
}

/* Dot-grid overlay */
.rc-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(0,170,255,0.18) 1px, transparent 1px);
    background-size: 36px 36px;
    pointer-events: none;
}

/* Glowing orb */
.rc-hero::after {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,150,255,0.12) 0%, transparent 70%);
    top: -150px;
    right: -100px;
    pointer-events: none;
    animation: pulse-orb 6s ease-in-out infinite;
}

@keyframes pulse-orb {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50%       { transform: scale(1.12); opacity: 1; }
}

.rc-hero h1 {
    line-height: 1.15;
    text-shadow: 0 2px 24px rgba(0,0,0,0.3);
    position: relative;
}

.rc-hero .lead {
    color: rgba(255,255,255,0.8);
    max-width: 600px;
    margin: 0 auto 2rem;
    font-size: 1.15rem;
    position: relative;
}

/* Accent underline on hero heading */
.rc-hero h1 em {
    font-style: normal;
    color: var(--rc-accent);
    text-shadow: 0 0 20px var(--rc-glow);
}

/* ── Hero badge row ── */
.rc-hero-badges {
    display: flex;
    gap: 0.6rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
    position: relative;
}

.rc-hero-badge {
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(0,170,255,0.3);
    color: rgba(255,255,255,0.85);
    padding: 0.3rem 0.85rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-family: 'Consolas', 'Courier New', monospace;
    letter-spacing: 0.3px;
}

/* ── Buttons ── */
.rc-btn-primary {
    background: var(--rc-accent);
    border: 2px solid var(--rc-accent);
    color: #fff;
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 2rem;
    transition: all 0.2s;
    box-shadow: 0 0 0 rgba(0,170,255,0);
    position: relative;
}
.rc-btn-primary:hover {
    background: #0099ee;
    border-color: #0099ee;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,170,255,0.45);
}

.rc-btn-outline {
    background: transparent;
    border: 2px solid rgba(255,255,255,0.45);
    color: #fff;
    border-radius: 8px;
    font-weight: 600;
    padding: 0.75rem 2rem;
    transition: all 0.2s;
}
.rc-btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.75);
    color: #fff;
}

.rc-btn-light {
    background: #fff;
    border: 2px solid #fff;
    color: var(--rc-navy);
    border-radius: 8px;
    font-weight: 700;
    padding: 0.75rem 2rem;
    transition: all 0.2s;
}
.rc-btn-light:hover {
    background: rgba(255,255,255,0.9);
    color: var(--rc-navy);
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}

/* ── Spacing utility ── */
.py-6 { padding-top: 5rem; padding-bottom: 5rem; }

/* ── Section heading ── */
.rc-section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--rc-accent);
    margin-bottom: 0.5rem;
}

/* ── Service cards ── */
.rc-card {
    background: var(--rc-card-bg);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 2px 12px rgba(13,31,51,0.07);
    border: 1px solid #e2ecf6;
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    position: relative;
    overflow: hidden;
}

.rc-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--rc-accent), transparent);
    opacity: 0;
    transition: opacity 0.3s;
}

.rc-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 36px rgba(0,100,200,0.12);
    border-color: rgba(0,170,255,0.3);
}

.rc-card:hover::before { opacity: 1; }

.rc-card-featured {
    border-color: rgba(0,170,255,0.4);
    box-shadow: 0 4px 24px rgba(0,170,255,0.12);
}
.rc-card-featured::before { opacity: 1; }

.rc-card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, #e8f4fd, #d0e8f8);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,100,200,0.1);
}

.rc-card-icon .bi {
    font-size: 1.6rem;
    color: var(--rc-blue);
}

.rc-card-featured .rc-card-icon {
    background: linear-gradient(135deg, #d0edff, #b8e0ff);
}
.rc-card-featured .rc-card-icon .bi { color: var(--rc-accent); }

.rc-feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.rc-feature-list li {
    padding: 0.3rem 0 0.3rem 1.5rem;
    position: relative;
    color: #5a6a7a;
    font-size: 0.9rem;
    border-bottom: 1px solid #f0f4f8;
}
.rc-feature-list li:last-child { border-bottom: none; }
.rc-feature-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--rc-accent);
    font-size: 0.8rem;
    top: 0.35rem;
}

/* ── Stats ── */
.rc-stat-value {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--rc-blue);
    line-height: 1;
}
.rc-stat-label {
    font-size: 0.75rem;
    color: #8a9aaa;
    margin-top: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

/* ── Tech stack panel ── */
.rc-tech-list {
    background: linear-gradient(135deg, #f0f6fc, #e8f2fa);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid #d4e6f5;
}

.rc-tech-badge {
    background: #fff;
    border: 1px solid #c8dff0;
    color: var(--rc-dark);
    padding: 0.35rem 0.9rem;
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 500;
    font-family: 'Consolas', 'Courier New', monospace;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.rc-tech-badge:hover {
    border-color: var(--rc-accent);
    box-shadow: 0 0 8px rgba(0,170,255,0.2);
}

/* ── Contact section ── */
.rc-contact-section {
    background:
        radial-gradient(ellipse 60% 80% at 50% 50%, rgba(0,120,220,0.2) 0%, transparent 70%),
        linear-gradient(160deg, var(--rc-navy) 0%, #0a3060 100%);
    position: relative;
    overflow: hidden;
}
.rc-contact-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle, rgba(0,170,255,0.12) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

/* ── Footer ── */
.rc-footer {
    background: #070f1a;
    color: rgba(255,255,255,0.4);
    padding: 1.5rem 0;
    font-size: 0.875rem;
    border-top: 1px solid rgba(0,170,255,0.1);
}

/* ── Focus ring ── */
.btn:focus, .btn:active:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem var(--rc-navy), 0 0 0 0.25rem var(--rc-accent);
}