/* ===========================
   RCS Master – Global Styles
   =========================== */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --color-primary:     #9164ff;
    --color-dark:        #1d1d22;
    --color-darker:      #121217;
    --color-text:        #434343;
    --color-text-faded:  #55556d;
    --color-bg:          #ffffff;
    --color-surface:     #f7f7f8;
    --color-border:      #e5e5e9;
    --color-footer-bg:   #2f2f2f;
    --color-footer-text: #ffffff;
    --max-w:             1200px;
    --nav-h:             72px;
    --radius-md:         0.5rem;
    --radius-lg:         0.75rem;
    --transition:        0.2s ease;
    --font-body:         'Inter', system-ui, -apple-system, sans-serif;
}

html { scroll-behavior: smooth; }

body {
    font-family:    var(--font-body);
    font-size:      1rem;
    line-height:    1.6;
    color:          var(--color-text);
    background:     var(--color-bg);
}

img { max-width: 100%; height: auto; display: block; }
a   { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ===========================
   Layout helpers
   =========================== */
.container {
    width: 100%;
    max-width: var(--max-w);
    margin-inline: auto;
    padding-inline: 1.25rem;
}

/* ===========================
   Header / Nav
   =========================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.site-header .container {
    display:         flex;
    align-items:     center;
    justify-content: space-between;
    height:          var(--nav-h);
    gap:             1rem;
}

.site-logo img {
    width:  200px;
    height: auto;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    list-style: none;
}

.site-nav a {
    color:       var(--color-text);
    font-weight: 500;
    font-size:   0.95rem;
    transition:  color var(--transition);
}

.site-nav a:hover,
.site-nav a.active {
    color:           var(--color-primary);
    text-decoration: none;
}

/* Hamburger */
.nav-toggle {
    display:    none;
    background: none;
    border:     none;
    cursor:     pointer;
    padding:    0.25rem;
}

.nav-toggle svg { display: block; }

/* ===========================
   Hero
   =========================== */
.hero {
    padding-block: clamp(4rem, 10vw, 7rem);
}

.hero .container {
    display:         flex;
    align-items:     center;
    gap:             clamp(2rem, 5vw, 5rem);
}

.hero-content { flex: 0 0 55%; }

.hero-eyebrow {
    color:          var(--color-primary);
    font-size:      0.9rem;
    font-weight:    600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom:  0.5rem;
}

.hero h1 {
    font-size:     clamp(2.4rem, 5vw, 3.5rem);
    font-weight:   600;
    line-height:   1.15;
    color:         var(--color-darker);
    margin-bottom: 1rem;
}

.hero p {
    font-size:     1.15rem;
    color:         var(--color-text-faded);
    margin-bottom: 2rem;
    max-width:     48ch;
}

.btn {
    display:          inline-block;
    padding:          0.7rem 1.75rem;
    border-radius:    var(--radius-md);
    font-weight:      600;
    font-size:        0.95rem;
    transition:       background var(--transition), transform var(--transition);
    cursor:           pointer;
    text-decoration:  none;
}

.btn-primary {
    background: var(--color-primary);
    color:      #fff;
}

.btn-primary:hover {
    background:      #7a52e0;
    text-decoration: none;
    transform:       translateY(-1px);
}

.btn-outline {
    background: transparent;
    color:      var(--color-primary);
    border:     2px solid var(--color-primary);
}

.btn-outline:hover {
    background:      var(--color-primary);
    color:           #fff;
    text-decoration: none;
}

.hero-image {
    flex: 1;
    border-radius: var(--radius-lg);
    overflow:      hidden;
}

.hero-image img {
    width:         100%;
    border-radius: var(--radius-lg);
    object-fit:    cover;
    aspect-ratio:  1/1;
}

/* ===========================
   Page hero (inner pages)
   =========================== */
.page-hero {
    background:    var(--color-surface);
    padding-block: 3.5rem;
    border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
    font-size:   clamp(2rem, 4vw, 2.75rem);
    font-weight: 600;
    color:       var(--color-darker);
}

/* ===========================
   Content sections
   =========================== */
.section {
    padding-block: clamp(3rem, 6vw, 5rem);
}

.section-alt {
    background: var(--color-surface);
}

.section-title {
    font-size:     clamp(1.5rem, 3vw, 2rem);
    font-weight:   600;
    color:         var(--color-darker);
    margin-bottom: 0.75rem;
}

.section-lead {
    font-size:     1.1rem;
    color:         var(--color-text-faded);
    max-width:     60ch;
    margin-bottom: 2.5rem;
}

/* About page content */
.prose {
    max-width:   70ch;
    font-size:   1.05rem;
    line-height: 1.75;
    color:       var(--color-text);
}

.prose p + p { margin-top: 1.25rem; }

/* Application card */
.app-grid {
    display:               grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap:                   1.5rem;
}

.app-card {
    background:    var(--color-bg);
    border:        1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding:       1.75rem 2rem;
    transition:    box-shadow var(--transition), transform var(--transition);
}

.app-card:hover {
    box-shadow: 0 4px 24px rgba(0,0,0,.08);
    transform:  translateY(-2px);
}

.app-card-icon {
    font-size:     2rem;
    margin-bottom: 1rem;
}

.app-card h3 {
    font-size:     1.15rem;
    font-weight:   600;
    color:         var(--color-darker);
    margin-bottom: 0.5rem;
}

.app-card p { color: var(--color-text-faded); }

.app-card .card-link {
    display:      inline-block;
    margin-top:   1rem;
    font-weight:  600;
    font-size:    0.9rem;
    color:        var(--color-primary);
}

/* Contact form */
.contact-grid {
    display:               grid;
    grid-template-columns: 1fr 1fr;
    gap:                   4rem;
    align-items:           start;
}

.contact-info h2 {
    font-size:     1.75rem;
    font-weight:   600;
    color:         var(--color-darker);
    margin-bottom: 1rem;
}

.contact-info p { color: var(--color-text-faded); }

.contact-detail {
    display:     flex;
    align-items: flex-start;
    gap:         0.75rem;
    margin-top:  1.5rem;
    color:       var(--color-text);
    font-size:   0.95rem;
}

.contact-detail strong { display: block; color: var(--color-darker); font-weight: 600; }

.form-group {
    display:       flex;
    flex-direction: column;
    gap:            0.4rem;
    margin-bottom:  1.25rem;
}

.form-group label {
    font-size:   0.875rem;
    font-weight: 600;
    color:       var(--color-darker);
}

.form-group input,
.form-group textarea,
.form-group select {
    padding:       0.65rem 0.9rem;
    border:        1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family:   inherit;
    font-size:     1rem;
    color:         var(--color-text);
    background:    var(--color-bg);
    transition:    border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline:      none;
    border-color: var(--color-primary);
}

.form-group textarea { resize: vertical; min-height: 140px; }

/* ===========================
   Footer
   =========================== */
.site-footer {
    background:    var(--color-footer-bg);
    color:         var(--color-footer-text);
    padding-block: clamp(3rem, 6vw, 5rem);
}

.footer-grid {
    display:               grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap:                   3rem;
    margin-bottom:         2.5rem;
}

.footer-brand p {
    color:      rgba(255,255,255,.65);
    font-size:  0.95rem;
    margin-top: 0.75rem;
    max-width:  38ch;
}

.footer-col h3 {
    font-size:     1rem;
    font-weight:   600;
    margin-bottom: 1rem;
}

.footer-col ul {
    list-style: none;
    display:    flex;
    flex-direction: column;
    gap:        0.6rem;
}

.footer-col a {
    color:      rgba(255,255,255,.65);
    font-size:  0.9rem;
    transition: color var(--transition);
}

.footer-col a:hover {
    color:           #fff;
    text-decoration: none;
}

.footer-bottom {
    border-top:  1px solid rgba(255,255,255,.1);
    padding-top: 1.5rem;
    font-size:   0.85rem;
    color:       rgba(255,255,255,.45);
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 900px) {
    .hero .container { flex-direction: column; }
    .hero-content     { flex: none; }
    .hero-image       { width: 100%; max-width: 420px; margin-inline: auto; }

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

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

    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
    .site-nav { display: none; }

    .site-nav.open {
        display:          flex;
        flex-direction:   column;
        position:         absolute;
        top:              var(--nav-h);
        left:             0;
        right:            0;
        background:       var(--color-bg);
        padding:          1rem 1.25rem;
        border-bottom:    1px solid var(--color-border);
        gap:              0.75rem;
        z-index:          99;
    }

    .nav-toggle { display: block; }

    .footer-grid {
        grid-template-columns: 1fr;
        gap:                   1.5rem;
    }
}