:root {
    --bg-darkest: #0e1522;
    --bg-dark: #1a2332;
    --mui-blue: #1976d2;
    --mui-cyan: #00bcd4;
    --mui-light: #e3f2fd;
    --mui-text: #e3eaf2;
    --mui-white: #fff;
    --card-glass: rgba(24,38,65,0.82);
    --card-border: rgba(0,188,212,0.13);
    --border-radius: 22px;
    --shadow-lg: 0 10px 32px 0 rgba(30,41,59,0.25);
    --shadow-mui: 0 4px 16px rgba(0,188,212,0.07), 0 2px 6px rgba(25,118,210,0.05);
    --transition: all 0.25s cubic-bezier(.4,0,.2,1);
    --ripple: rgba(0,188,212,0.23);
}

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

body {
    font-family: 'Plus Jakarta Sans', Arial, sans-serif;
    color: var(--mui-text);
    background: linear-gradient(135deg, var(--bg-darkest) 0%, var(--bg-dark) 100%);
    min-height: 100vh;
    letter-spacing: 0.02em;
    -webkit-font-smoothing: antialiased;
}

.parallax-container {
    position: relative;
    min-height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    perspective: 1px;
    background: linear-gradient(135deg, var(--bg-darkest) 0%, var(--bg-dark) 100%);
}

.parallax-layer {
    position: absolute;
    inset: 0;
    pointer-events: none;
}
.layer-1 {
    background: linear-gradient(120deg, #18203b 0%, #1a2332 100%);
    z-index: 1;
}
.layer-2 {
    background-image: url('data:image/svg+xml;utf8,<svg width="600" height="600" xmlns="http://www.w3.org/2000/svg"><circle cx="300" cy="300" r="220" fill="rgba(0,188,212,0.07)" /></svg>');
    background-size: 420px;
    z-index: 2;
    opacity: 0.21;
}
.layer-3 {
    background-image: url('data:image/svg+xml;utf8,<svg width="800" height="800" xmlns="http://www.w3.org/2000/svg"><ellipse cx="400" cy="400" rx="350" ry="130" fill="rgba(25,118,210,0.12)" /></svg>');
    background-size: 520px;
    z-index: 3;
    opacity: 0.12;
}

.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    padding: 1.1rem 5vw 0.5rem 5vw;
    display: flex;
    align-items: center;
    background: rgba(13,20,35,0.82);
    backdrop-filter: blur(16px);
    z-index: 100;
    border-bottom: 1px solid #1a233222;
    box-shadow: 0 4px 18px #181e2d15;
}
.logo-img {
    height: 52px;
    width: auto;
    filter: drop-shadow(0 2px 14px #00bcd470);
    border-radius: 9px;
    transition: box-shadow 0.18s;
}
.logo-img:focus,
.logo-img:hover {
    box-shadow: 0 0 0 4px var(--mui-cyan);
    outline: none;
}

.main-content {
    height: 100vh;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    z-index: 10;
    position: relative;
}

.glass-card {
    background: var(--card-glass);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg), var(--shadow-mui);
    border: 1.5px solid var(--card-border);
    backdrop-filter: blur(18px) saturate(140%);
    transition: box-shadow 0.3s, transform 0.17s;
    position: relative;
    animation: fadeInUp 1.1s cubic-bezier(.32,0,.67,0);
}

/* Banner card */
.mui-banner {
    padding: 3.7rem 2.2rem 2.7rem 2.2rem;
    text-align: center;
    max-width: 500px;
    width: 100%;
    margin: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.banner-logo {
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 3px 18px #00bcd443);
    border-radius: 12px;
    background: #fff0;
}

.banner-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 1.12rem;
    letter-spacing: 0.015em;
    background: linear-gradient(94deg, var(--mui-white), var(--mui-cyan) 90%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    line-height: 1.19;
}
.banner-title span {
    font-family: 'Plus Jakarta Sans', sans-serif;
    display: block;
    font-size: 1.18rem;
    font-weight: 400;
    color: var(--mui-light);
    letter-spacing: 0.01em;
    margin-top: 4px;
    background: linear-gradient(92deg, var(--mui-light), var(--mui-cyan) 80%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.banner-text {
    color: #bae4fa;
    font-size: 1.1rem;
    margin-bottom: 2.2rem;
    font-weight: 400;
    line-height: 1.65;
}

.banner-btn {
    position: relative;
    display: inline-block;
    overflow: hidden;
    padding: 0.95rem 2.3rem;
    background: linear-gradient(93deg, var(--mui-cyan), var(--mui-blue) 99%);
    color: #101e2e;
    font-weight: 700;
    border: none;
    border-radius: 99px;
    font-size: 1.09rem;
    letter-spacing: 0.5px;
    box-shadow: 0 3px 16px #00bcd42c;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    outline: none;
    margin-top: 3px;
}
.banner-btn:hover, .banner-btn:focus {
    background: linear-gradient(95deg, var(--mui-blue), var(--mui-cyan) 97%);
    color: #fff;
    transform: translateY(-2px) scale(1.036);
    box-shadow: 0 6px 32px #00bcd44a;
    outline: none;
}
.banner-btn:active {
    transform: scale(0.98);
}

/* Ripple Material UX */
.ripple:after {
    content: "";
    display: block;
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    width: 100px;
    height: 100px;
    top: 50%; left: 50%;
    opacity: 0;
    transform: translate(-50%, -50%) scale(1);
    transition: opacity 0.6s, transform 0.6s;
    background: var(--ripple);
}
.ripple:active:after {
    opacity: 0.45;
    transform: translate(-50%, -50%) scale(0.9);
    transition: 0s;
}

/* Descripción de empresa */
.desc-card {
    max-width: 500px;
    width: 100%;
    margin: 40px auto 0 auto;
    padding: 2.4rem 2rem 2rem 2rem;
    text-align: center;
}
.desc-card h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.23rem;
    color: var(--mui-white);
    margin-bottom: 1.2rem;
    font-weight: 700;
}
.desc-card p {
    font-size: 1.08rem;
    color: #d9edfd;
    line-height: 1.67;
    font-weight: 400;
}

/* Footer */
.footer {
    position: fixed;
    bottom: 0; left: 0; right: 0;
    padding: 1.12rem 5vw 0.7rem 5vw;
    text-align: center;
    z-index: 101;
    background: rgba(18,23,38,0.97);
    backdrop-filter: blur(13px);
    border-top: 1px solid #1976d215;
    box-shadow: 0 -1.5px 8px #101e2e15;
}
.copyright {
    font-size: 0.90rem;
    color: #b6d0f7;
    opacity: 0.81;
    margin-bottom: 2px;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(36px);}
    to { opacity: 1; transform: translateY(0);}
}

.banner-btn:focus,
.logo-img:focus {
    outline: 2.5px solid var(--mui-cyan);
    outline-offset: 3px;
}

/* Responsive */
@media (max-width: 720px) {
    .main-content { padding-top: 90px; }
    .mui-banner { padding: 2.3rem 0.8rem 1.7rem 0.8rem;}
    .desc-card { padding: 1.4rem 0.7rem 1.2rem 0.7rem;}
    .banner-title { font-size: 1.17rem;}
    .banner-logo { height: 52px;}
    .logo-img { height: 36px;}
    .footer { padding: 0.95rem 4vw 0.41rem 4vw;}
}
@media (max-width: 430px) {
    .main-content { padding: 80px 2vw 60px 2vw;}
    .mui-banner { padding: 1.05rem 0.18rem;}
    .desc-card { padding: 1.0rem 0.15rem 1.1rem 0.15rem;}
    .banner-logo { height: 37px; }
    .footer { font-size: 0.9rem; }
}