:root {
    --primary-red: #E1251B; /* Color acción (estilo botón Davivienda) */
    --primary-blue: #002B5B;
    --text-dark: #222222;
    --text-gray: #555555;
    --bg-color: #FFFFFF;
    --input-border: #999999;
    --input-focus: #333333;
}

* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Open Sans', Arial, sans-serif; }

body { 
    background-color: var(--bg-color); 
    color: var(--text-dark); 
    display: flex; 
    flex-direction: column;
    align-items: center; 
    min-height: 100vh; 
    overflow-x: hidden;
    position: relative;
}

/* Background Shapes mimicking institutional sites */
.bg-shape { position: absolute; z-index: -1; background-color: #F8F9FA; border-radius: 50%; }
.bg-shape.top-right { width: 800px; height: 800px; top: -400px; right: -200px; }
.bg-shape.bottom-left { width: 1000px; height: 1000px; bottom: -500px; left: -300px; }

/* Legal Sidebar (EEAT) */
.legal-sidebar {
    position: fixed;
    right: 20px;
    top: 50%;
    transform: translateY(-50%) rotate(180deg);
    writing-mode: vertical-rl;
    font-size: 9px;
    color: #666;
    letter-spacing: 1px;
    border-left: 1px solid #CCC;
    padding-left: 5px;
    text-transform: uppercase;
    font-family: Arial, sans-serif;
}
.legal-sidebar strong { color: #000; }

.app-container { 
    width: 100%; 
    max-width: 550px; /* Más estrecho, tipo login bancario */
    background: transparent; 
    padding: 40px 20px;
    margin-top: 5vh;
}

.app-header { 
    display: flex; 
    justify-content: center; 
    margin-bottom: 40px; 
}

.logo { 
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px; 
    font-weight: 700; 
    color: var(--primary-red); 
    letter-spacing: 0.5px;
}

.step { display: none; animation: fadeIn 0.3s ease; }
.step.active { display: block; }

.greeting { 
    font-size: 26px; 
    font-weight: 400; 
    color: var(--text-dark); 
    line-height: 1.2;
    margin-bottom: 10px;
}
.greeting strong { font-weight: 700; }

.subtitle { color: var(--text-gray); font-size: 15px; margin-bottom: 35px; }

.input-group { margin-bottom: 25px; }
label { 
    display: block; 
    font-size: 14px; 
    font-weight: 600; 
    margin-bottom: 8px; 
    color: var(--text-dark); 
}
input { 
    width: 100%; 
    padding: 14px 16px; 
    border: 1px solid var(--input-border); 
    border-radius: 6px; 
    font-size: 16px; 
    transition: all 0.2s; 
    background-color: transparent; 
}
input:focus { border-color: var(--input-focus); outline: none; box-shadow: 0 0 0 1px var(--input-focus); }

.security-note {
    font-size: 13px;
    color: var(--text-gray);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.button-group { display: flex; gap: 15px; margin-top: 20px; }
button { 
    flex: 1; 
    padding: 16px; 
    border: none; 
    border-radius: 30px; /* Bordes redondeados tipo banco */
    font-size: 16px; 
    font-weight: 600; 
    cursor: pointer; 
    transition: background-color 0.2s; 
}
.btn-primary { background-color: var(--primary-red); color: white; width: 100%; }
.btn-primary:hover { background-color: #C11B13; }
.btn-secondary { background-color: #EEEEEE; color: var(--text-dark); }
.btn-secondary:hover { background-color: #DDDDDD; }

.hidden { display: none !important; }

/* Results */
#verdict-title { font-size: 24px; font-weight: 700; margin-bottom: 10px; }
#verdict-title.success { color: #28a745; }
#verdict-title.danger { color: var(--primary-red); }

.metrics-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 30px 0; }
.metric-card { 
    border-top: 3px solid var(--primary-red);
    padding: 15px 5px; 
    text-align: center; 
}
.metric-card span { display: block; font-size: 10px; color: var(--text-gray); text-transform: uppercase; font-weight: 700; margin-bottom: 5px;}
.metric-card strong { font-size: 20px; color: var(--text-dark); font-weight: 700; }

.scientific-support {
    border-top: 1px solid #EAEAEA;
    padding-top: 20px;
    margin-top: 20px;
}
.scientific-support h3 { font-size: 14px; color: var(--text-dark); margin-bottom: 5px; text-transform: uppercase; }
.intro-theory { font-size: 12px; color: var(--text-gray); margin-bottom: 20px; }

.support-item { margin-bottom: 15px; }
.support-item h4 { font-size: 13px; color: var(--text-dark); margin-bottom: 2px;}
.support-item p { font-size: 12px; color: var(--text-gray); line-height: 1.4; }

.footer-links { text-align: center; margin-top: 50px; font-size: 13px; padding-top: 20px; border-top: 1px solid #EEE;}
.footer-links a { color: var(--text-gray); text-decoration: none; font-weight: 600; }
.footer-links a:hover { text-decoration: underline; }

.bottom-legal { text-align: center; font-size: 11px; color: #999; padding: 20px; width: 100%; position: absolute; bottom: 0;}

/* Spinner */
.spinner { text-align: center; padding: 50px 0; }
.loader { border: 3px solid #f3f3f3; border-top: 3px solid var(--primary-red); border-radius: 50%; width: 30px; height: 30px; animation: spin 1s linear infinite; margin: 0 auto 15px auto; }
@keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }