/* ============================================================
   RB Labs — Clean neutral palette + Liquid Glass design system
   ============================================================ */

/* --- Colour variables ---------------------------------------- */
:root {
    --primary-color:  #1d1d1f;
    --primary-dark:   #000000;
    --primary-light:  #6e6e73;
    --primary-alpha:  rgba(0, 0, 0, 0.04);
    --bg-gradient:    #1d1d1f;
    --text-gray:      #6e6e73;
    --bg-light:       #f2f2f4;
    --border-radius:  14px;

    /* Glass tokens */
    --glass-bg:       rgba(255, 255, 255, 0.62);
    --glass-border:   rgba(255, 255, 255, 0.85);
    --glass-shadow:   0 8px 32px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.9);
    --glass-blur:     blur(18px) saturate(180%);
}

/* --- Base ----------------------------------------------- */
html {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Force all text elements to the same font — overrides any hardcoded 'Inter' declarations */
body, h1, h2, h3, h4, h5, h6,
p, a, span, li, td, th, label,
button, input, textarea, select,
.form-input, .nav-link, .nav-lang-item,
.nav-lang-trigger, .btn {
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Helvetica Neue', Arial, sans-serif;
}

/* Normalise browser defaults for buttons — they often render bold or at a different size */
button {
    font-size: inherit;
    font-weight: inherit;
    letter-spacing: inherit;
    line-height: inherit;
}

/* --- Typography ------------------------------------------ */
.nav-link        { font-weight: 400; font-size: 0.9375rem; letter-spacing: 0; color: inherit; }
.hero-title      { font-weight: 600; line-height: 1.08; letter-spacing: -0.03em; }
.hero-welcome    { font-weight: 300; letter-spacing: -0.01em; }
.hero-description{ font-size: 1.1875rem; line-height: 1.6; font-weight: 400; }

.section-label {
    font-weight: 500;
    letter-spacing: 0.04em;
    font-size: 0.8125rem;
    text-transform: uppercase;
    color: #6e6e73;
}

.section-title   { font-weight: 600; letter-spacing: -0.025em; line-height: 1.1; }
.section-subtitle{ font-size: 1.125rem; line-height: 1.6; font-weight: 400; }
.product-title   { font-weight: 600; letter-spacing: -0.015em; }
.product-description { line-height: 1.6; }

.hero-stat .stat-value,
.stat-value,
.about-stat .stat-value { font-weight: 600; letter-spacing: -0.02em; }

.hero-stat .stat-label,
.stat-label,
.about-stat .stat-label { font-size: 0.8125rem; letter-spacing: 0.02em; font-weight: 400; }

.btn { font-weight: 500; letter-spacing: 0; font-size: 0.9375rem; }

/* --- Section backgrounds (give glass something to sit on) --- */
.products,
.why-choose,
.llms-section,
.about-section,
.news-section,
.team-section,
.contact-section,
.career-section {
    background: linear-gradient(145deg, #ececee 0%, #f7f7f9 60%, #eaeaec 100%);
}

/* --- Glass card mixin --------------------------------------- */
.product-card,
.why-card,
.service-card,
.innovation-card,
.news-card,
.news-article-card,
.contact-card,
.career-card,
.job-card,
.feature-card {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border) !important;
    box-shadow: var(--glass-shadow) !important;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.product-card:hover,
.why-card:hover,
.service-card:hover,
.innovation-card:hover,
.news-card:hover,
.news-article-card:hover,
.feature-card:hover {
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.13), inset 0 1px 0 rgba(255, 255, 255, 0.95) !important;
    transform: translateY(-3px);
}

/* --- Buttons ----------------------------------------------- */

/* Primary button — clean light glass */
.btn-primary {
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06), inset 0 1px 0 rgba(255, 255, 255, 1);
    color: #1d1d1f !important;
}

.btn-primary:hover {
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(0, 0, 0, 0.16) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.09), inset 0 1px 0 rgba(255, 255, 255, 1);
    transform: translateY(-1px);
}

/* Secondary button — same light glass, slightly more transparent */
.btn-secondary {
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
    color: #1d1d1f;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05), inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.78);
    border-color: rgba(0, 0, 0, 0.16) !important;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 1);
    transform: translateY(-1px);
}

/* Hero button (on video) — keep light glass, override btn-primary */
.btn.btn-minimal {
    background: rgba(255, 255, 255, 0.18) !important;
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.45) !important;
    backdrop-filter: blur(4px) saturate(180%);
    -webkit-backdrop-filter: blur(4px) saturate(180%);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.5) !important;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
}

.btn.btn-minimal:hover {
    background: rgba(255, 255, 255, 0.28) !important;
    border-color: rgba(255, 255, 255, 0.7) !important;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.18), inset 0 1px 0 rgba(255, 255, 255, 0.6) !important;
    transform: translateY(-2px);
}

/* --- Navbar glass ------------------------------------------ */
.navbar {
    background: rgba(255, 255, 255, 0.72) !important;
    backdrop-filter: saturate(180%) blur(20px) !important;
    -webkit-backdrop-filter: saturate(180%) blur(20px) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08) !important;
    transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
}

/* Transparent only on pages with background video */
.navbar.navbar-transparent {
    background: transparent !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1) !important;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.72) !important;
    backdrop-filter: saturate(180%) blur(20px) !important;
    -webkit-backdrop-filter: saturate(180%) blur(20px) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08) !important;
}

/* --- Form inputs glass ------------------------------------- */
input, textarea, select {
    background: rgba(255, 255, 255, 0.65) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.12) !important;
    border-radius: 10px !important;
}

input:focus, textarea:focus, select:focus {
    background: rgba(255, 255, 255, 0.85) !important;
    border-color: rgba(0, 0, 0, 0.3) !important;
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.06) !important;
    outline: none;
}

.nav-lang-search input,
.nav-lang-search input:focus {
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    backdrop-filter: none !important;
    outline: none !important;
}

/* --- Badges / labels --------------------------------------- */
.about-badge,
.hero-badge {
    background: rgba(255, 255, 255, 0.45) !important;
    border: 1px solid rgba(255, 255, 255, 0.7) !important;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    color: #1d1d1f !important;
}

/* --- Banner / CTA sections --------------------------------- */
.speaker-banner-card {
    background: rgb(7, 69, 141) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: none !important;
    box-shadow: 0 10px 40px rgba(7, 69, 141, 0.25) !important;
}

/* Innovation card — no image zoom on hover */
.innovation-card:hover .innovation-card-image img {
    transform: none;
}

/* Innovation card — learn more link */
.innovation-link {
    color: rgb(7, 69, 141) !important;
    font-weight: 500;
}