* {
    box-sizing: border-box
}

body {
    margin: 0;
    background: #f4f8f7;
    color: #163e3a;
    font-family: Arial, "Helvetica Neue", sans-serif
}

.shell {
    max-width: 1180px;
    margin: auto;
    padding: 38px 22px 70px
}

.hero {
    position: relative;
    min-height: 290px;
    padding: 40px 42px;
    border-radius: 26px;
    overflow: hidden;
    background-image: url("header-biblioteca-sms.png");
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    color: #073b55;
    box-shadow: 0 18px 40px #123b3630;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero p {
    color: #315e6e;
    max-width: 52%;
}

.hero > span {
    color: #137d91;
}

.hero span {
    color: #9d57b2;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .13em;
    font-size: .75rem
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.3rem);
    margin: 10px 0 8px;
    color: #2c5e66;
}


.back {
    float: right;
    color: #4c0063;
    text-decoration: none;
    font-weight: 700
}

.session {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 25px 0;
    padding: 16px 19px;
    border-radius: 14px;
    background: #e7f5f2;
    border: 1px solid #c7e7e1
}

.session span {
    color: #526e69
}

.session a {
    margin-left: auto;
    padding: 9px 15px;
    background: #b61f45;
    color: #fff;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700
}

.session.guest {
    background: #fff7e9;
    border-color: #f0dab1
}

.category {
    margin-top: 34px
}

.category>header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px
}

.category h2 {
    font-size: 1.35rem;
    margin: 0
}

.category header span {
    margin-left: auto;
    color: #647975;
    font-size: .85rem
}

.restricted {
    color: #9d2341 !important
}

.grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 15px
}

.grid article {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 8px 22px #173f3a12
}

.grid a {
    display: flex;
    align-items: center;
    gap: 14px;
    min-height: 104px;
    padding: 17px;
    text-decoration: none;
    color: inherit
}

.grid i {
    display: grid;
    place-items: center;
    width: 53px;
    height: 62px;
    flex: 0 0 auto;
    border-radius: 9px;
    background: #b61f45;
    color: #fff;
    font-size: .75rem;
    font-style: normal;
    font-weight: 800
}

.grid span {
    display: flex;
    flex-direction: column;
    gap: 5px;
    min-width: 0
}

.grid strong {
    overflow-wrap: anywhere
}

.grid small {
    color: #70827f
}

.grid b {
    margin-left: auto;
    color: #b61f45;
    font-size: 1.25rem
}

.empty {
    text-align: center;
    background: #fff;
    padding: 65px 20px;
    margin-top: 30px;
    border-radius: 20px
}

/* Navegación por carpetas */
.folders-heading { display:flex; align-items:flex-end; justify-content:space-between; gap:20px; margin:34px 4px 18px }
.folders-heading span { display:block; margin-bottom:5px; color:#9d57b2; font-size:.73rem; font-weight:800; letter-spacing:.11em; text-transform:uppercase }
.folders-heading h2 { margin:0; color:#2c5e66; font-size:1.55rem }
.folders-heading small { color:#647975 }
.folder-grid { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:17px }
.folder-card { min-width:0; overflow:hidden; border:1px solid #d9e6e3; border-radius:19px; background:#fff; box-shadow:0 8px 22px #173f3a12; transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease }
.folder-card:hover { transform:translateY(-4px); border-color:#9d57b2; box-shadow:0 15px 32px #173f3a22 }
.folder-card>a { display:flex; align-items:center; gap:15px; min-height:142px; padding:20px; color:inherit; text-decoration:none }
.folder-icon,.folder-title-icon { display:grid; place-items:center; flex:0 0 auto; width:68px; height:62px; border-radius:15px; background:#edf7f6 }
.folder-icon svg,.folder-title-icon svg { width:48px; fill:#d8aa42; stroke:#ad7822; stroke-width:2; stroke-linejoin:round }
.folder-card.is-restricted .folder-icon { background:#f9eef6 }
.folder-card.is-restricted .folder-icon svg { fill:#c58ad1; stroke:#7b438b }
.folder-copy { display:flex; flex:1; flex-direction:column; gap:6px; min-width:0 }
.folder-copy small { color:#647975; font-size:.72rem; font-weight:750; text-transform:uppercase }
.folder-copy strong { color:#244f56; line-height:1.3; overflow-wrap:anywhere }
.folder-copy em { color:#70827f; font-size:.82rem; font-style:normal }
.folder-arrow { color:#9d57b2; font-size:1.3rem; transition:transform .2s ease }
.folder-card:hover .folder-arrow { transform:translateX(4px) }
.library-nav { margin:30px 0 18px }
.library-nav a { display:inline-flex; padding:10px 16px; border:1px solid #d7e4e1; border-radius:999px; background:#fff; color:#4c0063; font-weight:750; text-decoration:none; box-shadow:0 6px 16px #173f3a10; transition:transform .2s ease,box-shadow .2s ease }
.library-nav a:hover { transform:translateX(-4px); box-shadow:0 10px 22px #173f3a1b }
.folder-content { padding:26px; border:1px solid #dce8e5; border-radius:22px; background:#fff; box-shadow:0 10px 28px #173f3a10 }
.folder-heading { display:flex; align-items:center; gap:16px; margin-bottom:24px; padding-bottom:22px; border-bottom:1px solid #e3ecea }
.folder-heading small { color:#9d57b2; font-weight:750; text-transform:uppercase }
.folder-heading h2 { margin:4px 0 0; color:#2c5e66; font-size:1.4rem }
.access-badge { margin-left:auto; color:#647975; font-size:.82rem }
.folder-empty { margin-top:0; background:#f7faf9 }
.folder-empty h3 { margin:0 0 7px }
.document-list { margin-top:0 }

@media(max-width:800px) {
    .grid {
        grid-template-columns: repeat(2, 1fr)
    }

    .folder-grid { grid-template-columns:repeat(2,minmax(0,1fr)) }

    .session {
        align-items: flex-start;
        flex-wrap: wrap
    }

    .session a {
        margin-left: 0
    }
}

@media(max-width:550px) {
    .shell {
        padding: 18px 13px 50px
    }

    .hero {
        padding: 28px 22px
    }

    .back {
        float: none;
        display: block;
        margin-bottom: 25px
    }

    .grid {
        grid-template-columns: 1fr
    }

    .folder-grid { grid-template-columns:1fr }
    .folders-heading { align-items:flex-start; flex-direction:column; gap:8px }
    .folder-content { padding:18px }
    .folder-heading { align-items:flex-start; flex-wrap:wrap }
    .access-badge { width:100%; margin-left:0 }
}