/* BRANDING */
:root {
    --mitko-blue: #0091ea;
    --anthracite: #2B2D2F;         /* ⭐ PERFECT ANTRACIET */
    --anthracite-light: #343639;
    --mitko-light: #f7f9fc;
    --mitko-border: #d8dce3;
    --radius: 14px;
}

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

body {
    font-family: 'Segoe UI', sans-serif;
    background: var(--mitko-light);
    color:#333;
}

/* SUBTLE BACKGROUND */
.bg-pattern {
    background-image: url("https://i.imgur.com/M1eRoqJ.png");
    opacity:.03;
    position:fixed;
    inset:0;
    z-index:-1;
}

/* =======================================
   HEADER — ANTRACIET + BLAUWE STREEP
   ======================================= */
.main-header {
    height: 78px;
    background: var(--anthracite);      /* ⭐ DIT IS NU ECHT ANTRACIET */
    border-bottom: 5px solid var(--mitko-blue);

    display:flex;
    justify-content:space-between;
    align-items:center;

    padding:0 40px;
    position:sticky;
    top:0;
    z-index:2000;

    box-shadow:0 4px 20px rgba(0,0,0,0.35);
}

.app-title {
    font-size:24px;
    font-weight:800;
    color:white;
    letter-spacing:1px;
}

/* MENU */
.header-menu a {
    color:white;
    margin-left:32px;
    text-decoration:none;
    font-weight:600;
    opacity:.85;
    font-size:16px;
    transition:.2s;
}
.header-menu a:hover {
    opacity:1;
    color:var(--mitko-blue);
}

/* LOGIN */
.login-container {
    display:flex;
    justify-content:center;
    padding-top:140px;
}
.login-box {
    width:350px;
    padding:30px;
    background:white;
    border-radius:var(--radius);
    box-shadow:0 6px 24px rgba(0,0,0,0.18);
}
.login-box input {
    width:100%;
    padding:14px;
    margin-bottom:15px;
    border:1px solid var(--mitko-border);
    border-radius:var(--radius);
}
.btn-primary {
    background:var(--mitko-blue);
    color:white;
    border:none;
    width:100%;
    padding:14px;
    border-radius:var(--radius);
    font-weight:700;
    cursor:pointer;
}

/* LAYOUT */
.page-section { padding:30px; }

.layout-2cols {
    display:flex;
    gap:28px;
}

/* SIDEBAR */
.sidebar {
    width:25%;
    background:white;
    padding:22px;
    border-radius:var(--radius);
    box-shadow:0 6px 24px rgba(0,0,0,0.12);
    position:sticky;
    top:95px;
    height:calc(100vh - 125px);
    overflow-y:auto;
}

/* VIEWER */
.viewer-panel {
    width:75%;
    background:white;
    padding:22px;
    border-radius:var(--radius);
    box-shadow:0 6px 24px rgba(0,0,0,0.15);
}

#pdfCanvas {
    width:100%;
    border-radius:var(--radius);
    border:1px solid var(--mitko-border);
}

/* TEgELS */
.tile-list {
    display:flex;
    flex-direction:column;
    gap:14px;
}
.pdf-tile {
    padding:14px;
    background:#f4f6f9;
    border-radius:var(--radius);
    border:1px solid var(--mitko-border);
    cursor:pointer;
    font-weight:500;
    transition:.2s;
}
.pdf-tile:hover {
    background:white;
    border-color:var(--mitko-blue);
    transform:translateY(-2px);
    box-shadow:0 4px 16px rgba(0,0,0,0.12);
}

/* DROPZONE */
.dropzone {
    border:2px dashed var(--mitko-blue);
    padding:40px;
    border-radius:var(--radius);
    background:rgba(0,113,188,.06);
    cursor:pointer;
}
.dropzone.dragover {
    background:rgba(0,113,188,.22);
}