/* ========================================
   STTech — Global Design System (Light Theme)
   ======================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Space+Grotesk:wght@400;500;600;700;800&display=swap');

:root {
    /* Brand Colors — Vibrant Blue */
    --primary:        hsl(218, 100%, 52%);
    --primary-light:  hsl(218, 100%, 65%);
    --primary-dark:   hsl(218, 100%, 40%);
    --primary-pale:   hsl(218, 100%, 97%);
    --accent:         hsl(190, 90%, 45%);
    --accent2:        hsl(258, 85%, 62%);
    
    /* Vibrant Neon Colors */
    --accent-cyan:    hsl(190, 100%, 50%);
    --accent-purple:  hsl(280, 100%, 60%);
    --accent-orange:  hsl(20, 100%, 55%);
    --accent-pink:    hsl(330, 100%, 55%);
    --accent-green:   hsl(150, 100%, 45%);

    /* Light BG Palette reduced white glare */
    --bg-0:    hsl(218, 25%, 95%);     /* Softer, cooler light gray-blue */
    --bg-1:    hsl(218, 25%, 92%);
    --bg-2:    hsl(218, 20%, 88%);
    --bg-3:    hsl(218, 15%, 83%);
    --bg-glass: rgba(255,255,255,0.72);
    --bg-glass-hover: rgba(255,255,255,0.9);

    /* Text */
    --text-0:   hsl(220, 35%, 12%);
    --text-1:   hsl(220, 20%, 32%);
    --text-2:   hsl(220, 15%, 54%);

    /* Border */
    --border:        rgba(0,0,0,0.07);
    --border-accent: rgba(30,100,255,0.2);

    /* Shadows */
    --shadow:      0 4px 24px -4px rgba(0,50,200,0.10);
    --shadow-md:   0 8px 32px -8px rgba(0,50,200,0.14);
    --shadow-lg:   0 16px 48px -12px rgba(0,50,200,0.18);
    --shadow-glow: 0 0 50px -10px hsla(218,100%,52%,0.3);

    /* Radii */
    --r-sm: 8px;
    --r-md: 14px;
    --r-lg: 22px;
    --r-xl: 30px;

    /* Transitions */
    --ease: cubic-bezier(0.25, 0.8, 0.25, 1);
    --tr:      all 0.32s var(--ease);
    --tr-fast: all 0.18s var(--ease);

    /* Typography */
    --font:         'Inter', system-ui, sans-serif;
    --font-heading: 'Space Grotesk', var(--font);
}

/* ─── Reset ─────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font);
    background-color: var(--bg-0);
    background-image: 
        radial-gradient(at 0% 0%, hsla(280, 100%, 75%, 0.15) 0px, transparent 60%),
        radial-gradient(at 100% 0%, hsla(190, 100%, 65%, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, hsla(20, 100%, 70%, 0.12) 0px, transparent 60%),
        radial-gradient(at 0% 100%, hsla(330, 100%, 75%, 0.1) 0px, transparent 50%);
    background-attachment: fixed;
    background-size: 100vw 100vh;
    color: var(--text-0);
    line-height: 1.65;
    overflow-x: hidden;
    cursor: none;
}

img, video { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; cursor: none; }
button { cursor: none; }

/* ─── Custom Cursor ──────────────────────── */
.cursor-dot {
    position: fixed; top: 0; left: 0;
    width: 6px; height: 6px;
    background: var(--primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: 99999;
    transform: translate(-50%, -50%);
    transition: width .18s, height .18s, background-color .18s, border .18s;
}
.cursor-glow {
    position: fixed; top: 0; left: 0;
    width: 320px; height: 320px;
    background: radial-gradient(circle, hsla(218,100%,52%,0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
}

/* ─── Background Decoration ─────────────── */
.bg-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    z-index: 0;
    pointer-events: none;
}
.orb-1 { width: 600px; height: 600px; background: hsla(280,100%,60%,0.12); top: -200px; left: -200px; }
.orb-2 { width: 500px; height: 500px; background: hsla(190,90%,45%,0.10); top: 30%; right: -200px; }
.orb-3 { width: 700px; height: 700px; background: hsla(20,100%,55%,0.10); bottom: -200px; left: 30%; }

/* --- New Text Gradients --- */
.text-gradient-cyan {
    background: linear-gradient(135deg, var(--accent-cyan), #00ffcc);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.text-gradient-purple {
    background: linear-gradient(135deg, #a300ff, #f20089);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.text-gradient-fire {
    background: linear-gradient(135deg, #ff0055, #ffaa00);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Grid overlay */
.page-grid-bg {
    position: fixed; inset: 0;
    background-image:
        linear-gradient(rgba(0,50,200,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,50,200,0.025) 1px, transparent 1px);
    background-size: 56px 56px;
    pointer-events: none;
    z-index: 0;
}

/* ─── Layout ──────────────────────────────── */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 28px;
    position: relative;
    z-index: 10;
}

section.section { padding: 110px 0; position: relative; }

.section-alt {
    background: linear-gradient(180deg, rgba(255,255,255,0) 0%, rgba(30,100,255,0.03) 50%, rgba(255,255,255,0) 100%);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

/* ─── Typography ──────────────────────────── */
h1, h2, h3, h4, h5 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
    color: var(--text-0);
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-purple {
    background: linear-gradient(135deg, var(--accent2), var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.label-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    background: var(--primary-pale);
    border: 1px solid rgba(30,100,255,0.18);
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

/* ─── Glass / Surface Card ─────────────────── */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow);
    transition: var(--tr);
}
.glass-card:hover {
    background: var(--bg-glass-hover);
    border-color: var(--border-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

/* Solid surface alternative */
.surface-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow);
    transition: var(--tr);
}
.surface-card:hover {
    border-color: var(--border-accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

/* ─── Buttons ─────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.92rem;
    font-family: var(--font);
    text-decoration: none;
    transition: var(--tr);
    border: none;
    cursor: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    box-shadow: 0 4px 16px rgba(30,100,255,0.30);
}
.btn-primary:hover {
    box-shadow: 0 8px 28px rgba(30,100,255,0.45);
}

.btn-glass {
    background: rgba(255,255,255,0.85);
    color: var(--text-0);
    border: 1px solid var(--border);
    backdrop-filter: blur(12px);
}
.btn-glass:hover {
    border-color: var(--border-accent);
    background: #fff;
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--border-accent);
}
.btn-outline:hover {
    background: var(--primary-pale);
    border-color: var(--primary);
}

.btn-lg { padding: 15px 34px; font-size: 1rem; }
.btn-sm { padding: 8px 18px; font-size: 0.82rem; }

/* ─── Navbar ──────────────────────────────── */
.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    padding: 20px 0;
    z-index: 1000;
    transition: var(--tr);
}
.navbar.scrolled {
    padding: 12px 0;
    background: rgba(250,252,255,0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 20px rgba(0,50,200,0.06);
}
.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 800;
    font-family: var(--font-heading);
    color: var(--text-0);
    text-decoration: none;
    flex-shrink: 0;
}
.logo-img {
    width: 34px;
    height: 34px;
    object-fit: contain;
    border-radius: 8px;
    flex-shrink: 0;
    filter: drop-shadow(0 2px 6px rgba(0,130,255,0.25));
    transition: var(--tr-fast);
}
.logo:hover .logo-img {
    filter: drop-shadow(0 4px 12px rgba(0,130,255,0.45));
    transform: scale(1.05);
}
/* In dark footer, keep logo visible */
.footer .logo-img {
    filter: brightness(1) drop-shadow(0 2px 8px rgba(0,130,255,0.4));
}
.nav-links {
    display: flex;
    gap: 2px;
    list-style: none;
    align-items: center;
}
.nav-links a {
    color: var(--text-1);
    font-weight: 500;
    font-size: 0.9rem;
    padding: 7px 14px;
    border-radius: 8px;
    transition: var(--tr-fast);
    cursor: none;
}
.nav-links a:hover { color: var(--primary); background: var(--primary-pale); }
.nav-links a.active { color: var(--primary); background: var(--primary-pale); font-weight: 600; }
.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.menu-toggle {
    display: none;
    background: transparent;
    border: none;
    color: var(--text-0);
    font-size: 1.5rem;
    padding: 4px;
}

/* ─── Section Headers ─────────────────────── */
.section-header {
    max-width: 680px;
    margin-bottom: 64px;
}
.section-header.centered {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}
.section-title {
    font-size: clamp(1.9rem, 4vw, 2.7rem);
    margin-bottom: 14px;
}
.section-subtitle {
    font-size: 1.02rem;
    color: var(--text-2);
    line-height: 1.75;
}

/* ─── Scroll Progress ─────────────────────── */
.scroll-progress-bar {
    position: fixed; top: 0; left: 0;
    height: 3px; background: linear-gradient(90deg, var(--primary), var(--accent2));
    width: 0%; z-index: 999999;
}

/* ─── Reveal Animations ───────────────────── */
.reveal-up {
    opacity: 0;
    transform: translateY(40px) perspective(1000px) rotateX(-5deg);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal-up.active { opacity: 1; transform: translateY(0) perspective(1000px) rotateX(0); }
.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal-left.active { opacity: 1; transform: translateX(0); }
.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal-right.active { opacity: 1; transform: translateX(0); }

/* ─── Page Hero (interior pages) ─────────── */
.page-hero {
    padding: 170px 0 90px;
    position: relative;
    overflow: hidden;
    text-align: center;
    background: linear-gradient(175deg, hsl(216,60%,98%) 0%, #fff 100%);
    border-bottom: 1px solid var(--border);
}
.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% -10%, hsla(218,100%,52%,0.08), transparent),
        radial-gradient(ellipse 60% 40% at 80% 50%, hsla(258,85%,62%,0.05), transparent);
    pointer-events: none;
}
.page-hero h1 {
    font-size: clamp(2.2rem, 5.5vw, 4rem);
    max-width: 780px;
    margin: 0 auto 18px;
    position: relative;
}
.page-hero > .container > p {
    font-size: 1.1rem;
    color: var(--text-2);
    max-width: 580px;
    margin: 0 auto;
    position: relative;
}

/* ─── Footer ──────────────────────────────── */
.footer {
    background: var(--text-0);
    color: rgba(255,255,255,0.8);
    padding: 72px 0 0;
    position: relative;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.6fr;
    gap: 52px;
    padding-bottom: 56px;
}
.footer .logo { color: #fff; }
.footer-brand .tagline {
    color: rgba(255,255,255,0.5);
    margin-top: 16px;
    font-size: 0.9rem;
    line-height: 1.7;
    max-width: 280px;
}
.footer-socials {
    display: flex;
    gap: 10px;
    margin-top: 22px;
}
.footer-socials a {
    width: 36px; height: 36px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    font-size: 1rem;
    transition: var(--tr-fast);
    cursor: none;
}
.footer-socials a:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
.footer-col h5 {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.4);
    margin-bottom: 18px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.footer-col ul a {
    color: rgba(255,255,255,0.65);
    font-size: 0.9rem;
    transition: var(--tr-fast);
    cursor: none;
}
.footer-col ul a:hover { color: #fff; padding-left: 3px; }
.footer-newsletter h5 {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.4);
    margin-bottom: 18px;
}
.newsletter-form {
    display: flex;
    gap: 6px;
    background: rgba(255,255,255,0.07);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px;
    padding: 5px;
}
.newsletter-form input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: #fff;
    font-family: var(--font);
    font-size: 0.875rem;
    padding: 8px 10px;
}
.newsletter-form input::placeholder { color: rgba(255,255,255,0.35); }
.newsletter-form button {
    background: var(--primary);
    border: none;
    border-radius: 8px;
    color: #fff;
    padding: 8px 16px;
    font-size: 0.82rem;
    font-weight: 600;
    font-family: var(--font);
    cursor: none;
    transition: var(--tr-fast);
}
.newsletter-form button:hover { background: var(--primary-dark); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 22px 0;
}
.footer-bottom .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}
.footer-bottom p { color: rgba(255,255,255,0.4); font-size: 0.82rem; }

/* ─── Divider ─────────────────────────────── */
.divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border), transparent);
}

/* ─── Scroll Bar ──────────────────────────── */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg-1); }
::-webkit-scrollbar-thumb { background: var(--bg-3); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-light); }

/* ─── Mobile Drawer ───────────────────────── */
.nav-drawer {
    display: none;
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: 290px;
    background: #fff;
    border-left: 1px solid var(--border);
    box-shadow: -8px 0 40px rgba(0,50,200,0.12);
    z-index: 2000;
    padding: 74px 24px 32px;
    flex-direction: column;
    gap: 4px;
    transform: translateX(100%);
    transition: transform 0.32s var(--ease);
}
.nav-drawer.open { transform: translateX(0); }
.nav-drawer.show { display: flex; }
.nav-drawer a {
    color: var(--text-1);
    font-size: 1rem;
    font-weight: 500;
    padding: 11px 14px;
    border-radius: 10px;
    transition: var(--tr-fast);
}
.nav-drawer a:hover, .nav-drawer a.active { color: var(--primary); background: var(--primary-pale); }
.nav-drawer-close {
    position: absolute;
    top: 18px; right: 18px;
    background: var(--bg-1);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-1);
    width: 36px; height: 36px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.1rem;
    cursor: none;
}
.drawer-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(10,20,60,0.3);
    z-index: 1999;
    backdrop-filter: blur(4px);
}
.drawer-overlay.show { display: block; }

/* ─── Responsive ──────────────────────────── */
@media (max-width: 1024px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .nav-links, .nav-actions { display: none; }
    .menu-toggle { display: flex; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; }
    body, a, button, input { cursor: auto; }
    .cursor-dot, .cursor-glow { display: none; }
    .floating-contact { bottom: 20px; right: 20px; }
}

/* ─── Floating Contact ────────────────────── */
.floating-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 9999;
}
.fc-item {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.6rem;
    box-shadow: var(--shadow-md);
    position: relative;
    transition: var(--tr);
    cursor: none;
    text-decoration: none;
}
.fc-item.phone {
    background: #00a859;
}
.fc-item.phone:hover {
    background: #008f4c;
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-lg);
}
.fc-item.zalo {
    background: #fff;
}
.fc-item.zalo:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-lg);
}
.fc-tooltip {
    position: absolute;
    right: 70px;
    background: var(--text-0);
    color: #fff;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(10px);
    transition: var(--tr);
    pointer-events: none;
}
.fc-tooltip::after {
    content: '';
    position: absolute;
    right: -5px;
    top: 50%;
    transform: translateY(-50%);
    border-width: 5px 0 5px 5px;
    border-style: solid;
    border-color: transparent transparent transparent var(--text-0);
}
.fc-item:hover .fc-tooltip {
    opacity: 1;
    transform: translateX(0);
}

@keyframes pulsePhone {
    0% { transform: scale(1); opacity: 0.6; }
    100% { transform: scale(1.5); opacity: 0; }
}
.fc-item.phone::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 50%;
    background: #00a859;
    z-index: -1;
    animation: pulsePhone 2s infinite cubic-bezier(0.25, 1, 0.5, 1);
}

/* ─── Chatbox ─────────────────────────────── */
.fc-item.chat {
    background: var(--primary);
    border: none;
    outline: none;
}
.fc-item.chat:hover {
    background: var(--primary-dark);
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.chatbox-wrapper {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 340px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px) scale(0.95);
    transform-origin: bottom right;
    transition: var(--tr);
}
.chatbox-wrapper.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0) scale(1);
}
.chatbox-header {
    background: linear-gradient(135deg, var(--primary), var(--accent2));
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #fff;
}
.chatbox-header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}
.chatbox-avatar {
    width: 40px;
    height: 40px;
    background: #fff;
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    position: relative;
    flex-shrink: 0;
}
.chatbox-avatar .status-dot {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    background: #22c55e;
    border: 2px solid #fff;
    border-radius: 50%;
}
.chatbox-header-info h4 {
    margin: 0;
    font-size: 1rem;
    color: #fff;
}
.chatbox-header-info p {
    margin: 0;
    font-size: 0.75rem;
    color: rgba(255,255,255,0.85);
}
.chatbox-close {
    background: transparent;
    border: none;
    color: #fff;
    font-size: 1.2rem;
    transition: var(--tr-fast);
    padding: 4px;
}
.chatbox-close:hover {
    transform: scale(1.1);
}
.chatbox-messages {
    height: 360px;
    max-height: 60vh;
    padding: 16px;
    background: var(--bg-0);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.chat-msg {
    display: flex;
    max-width: 85%;
    flex-shrink: 0;
}
.chat-msg.bot {
    align-self: flex-start;
}
.chat-msg.user {
    align-self: flex-end;
}
.msg-content {
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 0.9rem;
    line-height: 1.5;
    word-break: break-word;
    white-space: pre-wrap;
}
.bot .msg-content {
    background: #fff;
    border: 1px solid var(--border);
    border-bottom-left-radius: 4px;
    color: var(--text-0);
}
.user .msg-content {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    border-bottom-right-radius: 4px;
    box-shadow: 0 4px 12px rgba(30,100,255,0.15);
}
.chatbox-input {
    display: flex;
    padding: 12px;
    background: #fff;
    border-top: 1px solid var(--border);
    gap: 8px;
}
.chatbox-input input {
    flex: 1;
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 10px 16px;
    font-family: var(--font);
    font-size: 0.9rem;
    outline: none;
    transition: var(--tr-fast);
}
.chatbox-input input:focus {
    border-color: var(--primary);
}
.chatbox-input button {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: var(--tr-fast);
    flex-shrink: 0;
}
.chatbox-input button:hover {
    background: var(--primary-dark);
}