@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap');

:root{
    --navy:#101a2c;
    --navy-deep:#0a1120;
    --accent:#1f5fb8;
    --accent-deep:#164687;
    --brand:#ff6fa4;

    --bg:#f4f5f7;
    --card-bg:#ffffff;
    --border:#e0e3e9;

    --text:#1e2430;
    --text-dim:#6b7280;
    --text-faint:#9aa1ad;
}

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

body{
    font-family:'Nunito', 'Segoe UI', Arial, sans-serif;
    font-size:14px;
    color:var(--text);
    background:var(--bg);
}

a{
    color:var(--accent);
    text-decoration:none;
}

a:hover{
    text-decoration:underline;
}

/* ---------- bannière (page de connexion) ---------- */

.banner{
    position:relative;
    background:
        linear-gradient(100deg, rgba(16,26,44,.92) 0%, rgba(16,26,44,.75) 55%, rgba(16,26,44,.92) 100%),
        linear-gradient(135deg, var(--navy) 0%, var(--navy-deep) 100%);
    padding:44px 40px;
    overflow:hidden;
}

.banner-pattern{
    position:absolute;
    inset:0;
    opacity:.35;
    pointer-events:none;
}

.banner h1{
    position:relative;
    color:#ffffff;
    font-size:30px;
    font-weight:800;
    letter-spacing:.2px;
    max-width:900px;
    margin:0 auto;
    text-align:center;
}

.banner p{
    position:relative;
    color:#c7cede;
    font-size:13.5px;
    font-weight:600;
    text-align:center;
    max-width:900px;
    margin:8px auto 0;
}

/* ---------- barre compacte (pages internes) ---------- */

.topbar{
    background:linear-gradient(100deg, var(--navy) 0%, var(--navy-deep) 100%);
    padding:16px 28px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
}

.topbar .brand{
    display:flex;
    align-items:center;
    gap:12px;
}

.topbar h1{
    color:#ffffff;
    font-size:16px;
    font-weight:800;
    letter-spacing:.2px;
}

.topbar .subtitle{
    color:#8f9ab3;
    font-size:11px;
    font-weight:700;
    letter-spacing:.4px;
    text-transform:uppercase;
    margin-top:1px;
}

.user-chip{
    display:flex;
    align-items:center;
    gap:12px;
    color:#dfe4ee;
    font-size:12.5px;
    font-weight:700;
}

.user-chip .role-tag{
    background:rgba(255,255,255,.12);
    color:#c7cede;
    border-radius:4px;
    padding:2px 8px;
    font-size:10.5px;
    text-transform:uppercase;
    letter-spacing:.4px;
}

.user-chip a{
    color:#ffffff;
    background:rgba(255,255,255,.1);
    border:1px solid rgba(255,255,255,.18);
    border-radius:5px;
    padding:6px 14px;
    font-weight:700;
    font-size:12px;
    transition:background .15s ease;
}

.user-chip a:hover{
    background:rgba(255,255,255,.2);
    text-decoration:none;
}

/* ---------- carte de connexion ---------- */

.login-wrap{
    max-width:940px;
    margin:32px auto 40px;
    padding:0 20px;
}

.login-card{
    position:relative;
    background:var(--card-bg);
    border:1px solid var(--border);
    border-radius:6px;
    box-shadow:0 12px 34px rgba(16,26,44,.14);
    display:grid;
    grid-template-columns:1fr 1fr;
}

.login-col{
    padding:36px 40px;
}

.login-col + .login-col{
    border-left:1px solid var(--border);
}

.login-col h2{
    font-size:16px;
    font-weight:800;
    color:var(--text);
    margin-bottom:20px;
}

.field{
    margin-bottom:16px;
}

.field label{
    display:block;
    font-size:12.5px;
    font-weight:700;
    color:var(--text-dim);
    margin-bottom:6px;
}

.field input{
    width:100%;
    padding:10px 12px;
    border:1px solid #c9ced8;
    border-radius:4px;
    font-family:'Nunito', sans-serif;
    font-size:14px;
    color:var(--text);
    background:#fdfdfe;
    transition:border-color .15s ease, box-shadow .15s ease;
}

.field input:focus{
    outline:none;
    border-color:var(--accent);
    box-shadow:0 0 0 3px rgba(31,95,184,.16);
}

.btn{
    display:inline-block;
    width:100%;
    text-align:center;
    padding:11px 20px;
    border:none;
    border-radius:4px;
    font-family:'Nunito', sans-serif;
    font-weight:800;
    font-size:14px;
    color:#ffffff;
    cursor:pointer;
    background:var(--accent);
    transition:background .15s ease;
}

.btn:hover{
    background:var(--accent-deep);
}

.btn.small{
    width:auto;
    padding:7px 16px;
    font-size:12px;
}

.btn.secondary{
    background:#3c4658;
}

.btn.secondary:hover{
    background:#2b3342;
}

.btn.danger{
    background:#b3404f;
}

.btn.danger:hover{
    background:#94313e;
}

.info-block{
    background:#f6f8fb;
    border:1px solid var(--border);
    border-radius:5px;
    padding:16px 18px;
    font-size:12.5px;
    color:var(--text-dim);
    line-height:1.6;
    margin-bottom:16px;
}

.info-block strong{
    color:var(--text);
}

.info-block a{
    font-weight:700;
}

.divider-label{
    display:flex;
    align-items:center;
    gap:12px;
    color:var(--text-faint);
    font-size:11px;
    font-weight:700;
    text-transform:uppercase;
    letter-spacing:.4px;
    margin:22px 0 14px;
}

.divider-label::before,
.divider-label::after{
    content:"";
    flex:1;
    height:1px;
    background:var(--border);
}

.alert{
    max-width:940px;
    margin:20px auto 0;
    padding:0 20px;
}

.alert-box{
    padding:12px 16px;
    border-radius:5px;
    font-size:13px;
    font-weight:700;
}

.alert-box.error{
    background:#fdf1f2;
    color:#a3384a;
    border:1px solid #f4d3d9;
}

.alert-box.success{
    background:#eef8f2;
    color:#1f7a4d;
    border:1px solid #cfeadb;
}

/* ---------- contenu interne ---------- */

.content{
    max-width:940px;
    margin:0 auto;
    padding:32px 20px 60px;
}

.content h2{
    font-size:19px;
    font-weight:800;
    color:var(--text);
    margin-bottom:4px;
}

.content .lead{
    color:var(--text-dim);
    font-size:13px;
    font-weight:600;
    margin-bottom:24px;
}

.panel{
    background:var(--card-bg);
    border:1px solid var(--border);
    border-radius:6px;
    overflow:hidden;
}

.panel-title{
    padding:14px 20px;
    background:#f6f8fb;
    border-bottom:1px solid var(--border);
    font-weight:800;
    font-size:13.5px;
    color:var(--text);
}

.file-row{
    display:flex;
    align-items:center;
    gap:14px;
    padding:13px 20px;
    border-bottom:1px solid var(--border);
}

.file-row:last-child{
    border-bottom:none;
}

.file-row:nth-child(even){
    background:#fafbfc;
}

.file-icon{
    font-size:19px;
    flex-shrink:0;
    width:24px;
    text-align:center;
}

.file-info{
    flex-grow:1;
    min-width:0;
}

.file-name{
    font-weight:700;
    font-size:13px;
    color:var(--text);
    word-break:break-word;
}

.file-meta{
    font-size:11.5px;
    color:var(--text-faint);
    font-weight:600;
    margin-top:2px;
}

.file-actions{
    display:flex;
    gap:8px;
    flex-shrink:0;
}

.empty-note{
    text-align:center;
    color:var(--text-dim);
    font-weight:600;
    font-size:13px;
    padding:36px 10px;
}

.upload-box{
    margin-top:22px;
    padding:20px;
    border:1px dashed #c9ced8;
    border-radius:6px;
    background:#fafbfc;
    text-align:center;
}

.upload-box input[type="file"]{
    margin:12px 0;
    font-size:12.5px;
    max-width:100%;
}

.upload-hint{
    font-size:11.5px;
    color:var(--text-faint);
    font-weight:600;
}

.tag-private{
    display:inline-block;
    font-size:10px;
    font-weight:800;
    color:#8a5a2a;
    background:#fdf0dd;
    border:1px solid #f2ddb8;
    border-radius:3px;
    padding:1px 6px;
    margin-left:6px;
    vertical-align:middle;
    text-transform:uppercase;
    letter-spacing:.3px;
}

.visibility-choice{
    display:flex;
    flex-wrap:wrap;
    gap:18px;
    justify-content:center;
    margin:14px 0;
    font-size:12.5px;
    color:var(--text-dim);
    font-weight:600;
}

.visibility-choice label{
    display:flex;
    align-items:center;
    gap:6px;
    cursor:pointer;
}

.visibility-choice input{
    accent-color:var(--accent);
}

/* ---------- chat ---------- */

.chat-panel{
    display:flex;
    flex-direction:column;
}

.chat-messages{
    height:420px;
    overflow-y:auto;
    padding:18px 20px;
    display:flex;
    flex-direction:column;
    gap:10px;
    background:#fafbfc;
}

.chat-bubble{
    max-width:72%;
    align-self:flex-start;
    background:#ffffff;
    border:1px solid var(--border);
    border-radius:10px 10px 10px 2px;
    padding:8px 12px;
}

.chat-bubble.mine{
    align-self:flex-end;
    background:#eaf1fc;
    border-color:#cfe0f7;
    border-radius:10px 10px 2px 10px;
}

.chat-bubble-header{
    display:flex;
    justify-content:space-between;
    gap:14px;
    margin-bottom:3px;
}

.chat-author{
    font-size:11.5px;
    font-weight:800;
    color:var(--accent-deep);
}

.chat-bubble.mine .chat-author{
    color:#2b5590;
}

.chat-time{
    font-size:10.5px;
    color:var(--text-faint);
    font-weight:600;
    white-space:nowrap;
}

.chat-text{
    font-size:13px;
    color:var(--text);
    line-height:1.5;
    word-break:break-word;
    white-space:pre-wrap;
}

.chat-form{
    display:flex;
    gap:10px;
    align-items:flex-end;
    padding:14px 20px;
    border-top:1px solid var(--border);
    background:#ffffff;
}

.chat-input{
    flex-grow:1;
    resize:none;
    height:44px;
    max-height:120px;
    padding:10px 12px;
    border:1px solid #c9ced8;
    border-radius:6px;
    font-family:'Nunito', sans-serif;
    font-size:13.5px;
    color:var(--text);
}

.chat-input:focus{
    outline:none;
    border-color:var(--accent);
    box-shadow:0 0 0 3px rgba(31,95,184,.16);
}

.chat-error{
    padding:0 20px 14px;
    margin:0;
    font-size:12px;
    font-weight:700;
    color:#a3384a;
    min-height:1em;
}

@media(max-width:600px){
    .chat-messages{ height:340px; }
    .chat-bubble{ max-width:88%; }
}

/* ---------- pied de page ---------- */

footer.site-footer{
    background:var(--navy-deep);
    color:#9aa4ba;
    padding:36px 40px 26px;
    margin-top:40px;
}

.footer-grid{
    max-width:940px;
    margin:0 auto;
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:30px;
    align-items:start;
}

.footer-grid h3{
    color:#dfe4ee;
    font-size:14px;
    font-weight:800;
    margin-bottom:12px;
}

.footer-grid a,
.footer-grid p{
    display:block;
    color:#9aa4ba;
    font-size:12.5px;
    font-weight:600;
    margin-bottom:6px;
}

.footer-grid a:hover{
    color:#ffffff;
    text-decoration:none;
}

.footer-copy{
    max-width:940px;
    margin:26px auto 0;
    padding-top:18px;
    border-top:1px solid rgba(255,255,255,.08);
    font-size:11px;
    color:#6b7488;
    text-align:center;
}

@media(max-width:760px){
    .login-card{ grid-template-columns:1fr; }
    .login-col + .login-col{ border-left:none; border-top:1px solid var(--border); }
    .banner{ padding:30px 20px; }
    .banner h1{ font-size:22px; }
    .footer-grid{ grid-template-columns:1fr 1fr; }
    .file-row{ flex-wrap:wrap; }
}