* { box-sizing: border-box; }

:root {
    --azul-oscuro: #0a1128;
    --azul-panel: #131c3a;
    --azul-card: #16214a;
    --cian: #00e5cc;
    --cian-glow: rgba(0, 229, 204, 0.35);
    --dorado: #f4c542;
    --rojo-acento: #ff5470;
    --texto: #eaf0ff;
    --texto-tenue: #93a0c9;
    --borde: #2a3868;
}

body {
    font-family: 'Segoe UI', Arial, Helvetica, sans-serif;
    background: radial-gradient(circle at top left, #101c44 0%, #060a1a 55%, #030509 100%);
    background-attachment: fixed;
    color: var(--texto);
    margin: 0;
    padding: 0;
    min-height: 100vh;
}

header.top {
    background: linear-gradient(120deg, #0a1130 0%, #12224f 50%, #0a1130 100%);
    border-bottom: 1px solid var(--borde);
    box-shadow: 0 0 30px rgba(0, 229, 204, 0.15), 0 2px 12px rgba(0,0,0,0.5);
    padding: 16px 28px;
    display: flex;
    align-items: center;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 10;
}
header.top img.logo-header {
    height: 52px;
    width: 52px;
    object-fit: contain;
    border-radius: 50%;
    background: #fff;
    padding: 3px;
    box-shadow: 0 0 18px var(--cian-glow), 0 0 4px rgba(255,255,255,0.4);
}
header.top h1 {
    margin: 0;
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.3px;
    background: linear-gradient(90deg, #ffffff 0%, var(--cian) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 18px var(--cian-glow);
}

.container { max-width: 960px; margin: 32px auto; padding: 0 16px; }

.card {
    background: linear-gradient(160deg, var(--azul-card) 0%, var(--azul-panel) 100%);
    border: 1px solid var(--borde);
    border-radius: 14px;
    padding: 24px;
    margin-bottom: 22px;
    box-shadow: 0 8px 28px rgba(0,0,0,0.45), inset 0 1px 0 rgba(255,255,255,0.03);
    position: relative;
    overflow: hidden;
}
.card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--cian), var(--dorado), transparent);
    opacity: 0.7;
}

h2 { color: #fff; font-weight: 600; letter-spacing: 0.2px; }
h2::after {
    content: '';
    display: block;
    width: 46px;
    height: 3px;
    margin-top: 8px;
    background: linear-gradient(90deg, var(--cian), var(--dorado));
    border-radius: 2px;
}
h3 { color: var(--texto); }
p { color: var(--texto-tenue); line-height: 1.55; }
strong { color: var(--texto); }
a { color: var(--cian); }

label { display: block; margin: 14px 0 6px; font-weight: 600; color: var(--texto); font-size: 13.5px; letter-spacing: 0.2px; }

input, select, textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--borde);
    border-radius: 8px;
    font-size: 14px;
    background: #0c1330;
    color: var(--texto);
    transition: border-color .2s, box-shadow .2s;
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--cian);
    box-shadow: 0 0 0 3px var(--cian-glow);
}
input::placeholder, textarea::placeholder { color: #5c6a99; }

button, .btn {
    display: inline-block;
    background: linear-gradient(120deg, var(--cian) 0%, #00a8c9 100%);
    color: #03131a;
    border: none;
    padding: 11px 22px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.2px;
    margin-top: 16px;
    text-decoration: none;
    box-shadow: 0 0 18px var(--cian-glow);
    transition: transform .15s, box-shadow .15s;
}
button:hover, .btn:hover { transform: translateY(-1px); box-shadow: 0 0 26px var(--cian-glow); }
button.rechazar, .btn.rechazar {
    background: linear-gradient(120deg, var(--rojo-acento) 0%, #c62842 100%);
    color: #fff;
    box-shadow: 0 0 18px rgba(255, 84, 112, 0.35);
}
button.secundario, .btn.secundario {
    background: #232f5c;
    color: var(--texto);
    box-shadow: none;
    border: 1px solid var(--borde);
}

table { width: 100%; border-collapse: collapse; margin-top: 14px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--borde); font-size: 13.5px; color: var(--texto); }
th { color: var(--cian); text-transform: uppercase; font-size: 11.5px; letter-spacing: 0.6px; font-weight: 700; }
tr:hover td { background: rgba(0, 229, 204, 0.04); }

.badge { padding: 4px 10px; border-radius: 20px; font-size: 11.5px; font-weight: 700; letter-spacing: 0.3px; color: #04131a; }
.badge.pendiente { background: var(--dorado); }
.badge.validado, .badge.registrado, .badge.validada { background: var(--cian); }
.badge.rechazado, .badge.rechazada { background: var(--rojo-acento); color: #fff; }

.alerta { padding: 14px 16px; border-radius: 10px; margin-bottom: 18px; font-size: 14px; }
.alerta.exito { background: rgba(0, 229, 204, 0.08); border: 1px solid var(--cian); color: #b6fff5; }
.alerta.error { background: rgba(255, 84, 112, 0.08); border: 1px solid var(--rojo-acento); color: #ffc2cd; }

nav.tabs { display: flex; flex-wrap: wrap; gap: 4px; align-items: center; }
nav.tabs a {
    color: var(--texto-tenue);
    font-weight: 600;
    font-size: 13.5px;
    text-decoration: none;
    padding: 8px 14px;
    border-radius: 8px;
    transition: background .15s, color .15s;
}
nav.tabs a:hover { background: rgba(0, 229, 204, 0.1); color: var(--cian); }