/* ============================================================
   app.css — ERP global styles
   ============================================================ */

/* ── CSS Custom Properties ─────────────────────────────── */
:root {
    --erp-primary:        #2563eb;
    --erp-primary-hover:  #1d4ed8;
    --erp-primary-light:  #eff6ff;
    --erp-bg:             #f1f5f9;
    --erp-surface:        #ffffff;
    --erp-border:         #e2e8f0;
    --erp-text:           #0f172a;
    --erp-text-muted:     #64748b;
    --erp-danger:         #dc2626;
    --erp-shadow-sm:      0 1px 3px 0 rgb(0 0 0 / .10), 0 1px 2px -1px rgb(0 0 0 / .10);
    --erp-shadow-md:      0 4px 6px -1px rgb(0 0 0 / .10), 0 2px 4px -2px rgb(0 0 0 / .10);
    --erp-shadow-lg:      0 10px 15px -3px rgb(0 0 0 / .10), 0 4px 6px -4px rgb(0 0 0 / .10);
    --erp-radius:         .75rem;
    --erp-radius-sm:      .375rem;
}

/* ── Base ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--erp-bg);
    color: var(--erp-text);
    -webkit-font-smoothing: antialiased;
}

/* ── Login page ─────────────────────────────────────────── */
.login-wrapper {
    min-height: 100dvh;
    display: grid;
    grid-template-columns: 1fr;
    place-items: center;
    padding: 1.5rem;

    /* subtle diagonal gradient */
    background:
        radial-gradient(ellipse 80% 60% at 20% 0%,   #dbeafe 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 100%,  #e0e7ff 0%, transparent 60%),
        var(--erp-bg);
}

.login-card {
    width: 100%;
    max-width: 26rem;
    background: var(--erp-surface);
    border: 1px solid var(--erp-border);
    border-radius: var(--erp-radius);
    box-shadow: var(--erp-shadow-lg);
    padding: 2.5rem 2.25rem;
}

/* Logo area */
.login-logo {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
}

.login-logo img {
    height: 2.75rem;
    width: auto;
}

/* Fallback when no logo image exists */
.login-logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--erp-primary);
    letter-spacing: -.03em;
}

/* Title */
.login-title {
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--erp-text);
    letter-spacing: -.02em;
    margin: 0 0 1.75rem;
    text-align: center;
}

/* ── Form overrides ─────────────────────────────────────── */
.login-card label {
    font-size: .8125rem;
    font-weight: 600;
    color: var(--erp-text-muted);
    text-transform: uppercase;
    letter-spacing: .04em;
    margin-bottom: .35rem;
    display: block;
}

.login-card .form-control {
    height: 2.75rem;
    border-color: var(--erp-border);
    border-radius: var(--erp-radius-sm);
    font-size: .9375rem;
    transition: border-color .15s, box-shadow .15s;
    padding: 0 .875rem;
}

.login-card .form-control:focus {
    border-color: var(--erp-primary);
    box-shadow: 0 0 0 3px rgb(37 99 235 / .15);
}

.login-card .form-control-lg {
    height: 3.25rem;
    font-size: 1.5rem;
    text-align: center;
    letter-spacing: .35em;
}

/* Password toggle */
.login-card .input-group .btn-outline-secondary {
    border-color: var(--erp-border);
    color: var(--erp-text-muted);
    background: var(--erp-bg);
    border-left: none;
    border-radius: 0 var(--erp-radius-sm) var(--erp-radius-sm) 0;
}

.login-card .input-group .btn-outline-secondary:hover {
    background: #e2e8f0;
    color: var(--erp-text);
}

.login-card .input-group .form-control {
    border-right: none;
    border-radius: var(--erp-radius-sm) 0 0 var(--erp-radius-sm);
}

/* Remember me */
.login-card .form-check-label {
    font-size: .875rem;
    font-weight: 400;
    color: var(--erp-text-muted);
    text-transform: none;
    letter-spacing: 0;
}

/* Primary button */
.login-card .btn-primary {
    background: var(--erp-primary);
    border-color: var(--erp-primary);
    height: 2.75rem;
    font-weight: 600;
    font-size: .9375rem;
    border-radius: var(--erp-radius-sm);
    transition: background .15s, box-shadow .15s, transform .1s;
}

.login-card .btn-primary:hover:not(:disabled) {
    background: var(--erp-primary-hover);
    border-color: var(--erp-primary-hover);
    box-shadow: var(--erp-shadow-md);
    transform: translateY(-1px);
}

.login-card .btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.login-card .btn-primary:disabled {
    opacity: .65;
    cursor: not-allowed;
}

/* Passkey button */
.login-card .btn-outline-secondary.w-100 {
    height: 2.75rem;
    font-weight: 500;
    font-size: .9375rem;
    border-radius: var(--erp-radius-sm);
    border-color: var(--erp-border);
    color: var(--erp-text);
    background: var(--erp-surface);
    transition: background .15s, box-shadow .15s, transform .1s;
}

.login-card .btn-outline-secondary.w-100:hover:not(:disabled) {
    background: var(--erp-bg);
    box-shadow: var(--erp-shadow-sm);
    transform: translateY(-1px);
}

/* "or" divider */
.login-divider {
    display: flex;
    align-items: center;
    gap: .75rem;
    margin: 1.25rem 0;
    color: var(--erp-text-muted);
    font-size: .8125rem;
}

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

/* Error alert */
.login-card .alert-danger {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--erp-danger);
    border-radius: var(--erp-radius-sm);
    font-size: .875rem;
    padding: .75rem 1rem;
    margin-bottom: 1.25rem;
}

/* Validation messages */
.login-card .validation-message {
    font-size: .8rem;
    color: var(--erp-danger);
    margin-top: .25rem;
}

/* Navigation links */
.login-card a {
    color: var(--erp-primary);
    text-decoration: none;
    font-size: .875rem;
}

.login-card a:hover {
    text-decoration: underline;
}

/* ── Auth sub-pages (Change Password etc.) ──────────────── */
.auth-wrapper {
    display: grid;
    place-items: center;
    min-height: 100%;
    padding: 2rem 1.5rem;
}

.auth-card {
    width: 100%;
    max-width: 28rem;
    background: var(--erp-surface);
    border: 1px solid var(--erp-border);
    border-radius: var(--erp-radius);
    box-shadow: var(--erp-shadow-md);
    padding: 2rem 2.25rem;
}

/* ── Shell layout ───────────────────────────────────────── */
:root {
    --erp-topbar-height:  2.75rem;
    --erp-sidebar-width:  15rem;

    /* Sidebar palette — dark slate */
    --erp-sidebar-bg:       #1e293b;
    --erp-sidebar-hover:    #334155;
    --erp-sidebar-active:   #2563eb;
    --erp-sidebar-text:     #cbd5e1;
    --erp-sidebar-muted:    #64748b;
    --erp-sidebar-text-on:  #f8fafc;
}

/* Hidden checkbox drives the mobile sidebar toggle */
.erp-nav-toggle-input { display: none; }

.erp-shell {
    display: grid;
    grid-template-areas:
        "topbar topbar"
        "sidebar main";
    grid-template-rows:    var(--erp-topbar-height) 1fr;
    grid-template-columns: var(--erp-sidebar-width) 1fr;
    height: 100dvh;
    overflow: hidden;
}

/* ── Top bar ────────────────────────────────────────────── */
.erp-topbar {
    grid-area: topbar;
    display: flex;
    align-items: center;
    gap: .25rem;
    padding: 0 1rem;
    background: var(--erp-surface);
    border-bottom: 1px solid var(--erp-border);
    z-index: 200;
}

.erp-brand {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .9375rem;
    font-weight: 700;
    color: var(--erp-primary);
    text-decoration: none;
    letter-spacing: -.02em;
    padding: 0 .625rem;
    margin-right: .5rem;
    white-space: nowrap;
}
.erp-brand img { height: 1.5rem; width: auto; }
.erp-brand:hover { color: var(--erp-primary-hover); }

/* Hamburger — hidden on desktop */
.erp-hamburger {
    display: none;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: var(--erp-radius-sm);
    cursor: pointer;
    color: var(--erp-text-muted);
    font-size: 1.25rem;
    transition: background .12s, color .12s;
    flex-shrink: 0;
}
.erp-hamburger:hover { background: var(--erp-bg); color: var(--erp-text); }

/* ── Application menu (Datei / Nutzer / Hilfe) ──────────── */
.erp-appmenu {
    display: flex;
    align-items: stretch;
    height: 100%;
    gap: 0;
}

.erp-appmenu-item {
    position: relative;
    display: flex;
    align-items: stretch;
}

.erp-appmenu-btn {
    display: flex;
    align-items: center;
    gap: .375rem;
    height: 100%;
    padding: 0 .75rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: .875rem;
    color: var(--erp-text);
    border-radius: 0;
    white-space: nowrap;
    transition: background .12s;
}
.erp-appmenu-btn:hover,
.erp-appmenu-item:focus-within .erp-appmenu-btn {
    background: var(--erp-bg);
}

/* Dropdown panel */
.erp-appmenu-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 13rem;
    background: var(--erp-surface);
    border: 1px solid var(--erp-border);
    border-radius: var(--erp-radius-sm);
    box-shadow: var(--erp-shadow-md);
    list-style: none;
    padding: .375rem 0;
    margin: 0;
    z-index: 300;
}
.erp-appmenu-item:focus-within .erp-appmenu-dropdown { display: block; }

.erp-appmenu-action {
    display: flex;
    align-items: center;
    gap: .625rem;
    width: 100%;
    padding: .45rem 1rem;
    background: none;
    border: none;
    cursor: pointer;
    font-size: .875rem;
    color: var(--erp-text);
    text-decoration: none;
    text-align: left;
    white-space: nowrap;
    transition: background .1s;
}
.erp-appmenu-action:hover { background: var(--erp-bg); color: var(--erp-text); }
.erp-appmenu-action i { width: 1rem; text-align: center; color: var(--erp-text-muted); }

.erp-appmenu-sep {
    height: 1px;
    background: var(--erp-border);
    margin: .375rem 0;
}

/* ── "Über ERP" dialog (CSS-only, checkbox toggle) ───────── */
.erp-about-toggle { display: none; }

.erp-about {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1080;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}
.erp-about-toggle:checked ~ .erp-about { display: flex; }

.erp-about-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, .45);
    cursor: pointer;
}

.erp-about-dialog {
    position: relative;
    width: 100%;
    max-width: 30rem;
    background: var(--erp-surface, #fff);
    color: var(--erp-text, #1f2937);
    border: 1px solid var(--erp-border, #e5e7eb);
    border-radius: var(--erp-radius-sm, .5rem);
    box-shadow: 0 1.5rem 3rem rgba(0, 0, 0, .25);
    overflow: hidden;
}

.erp-about-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .85rem 1.1rem;
    border-bottom: 1px solid var(--erp-border, #e5e7eb);
}
.erp-about-head h2 {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 600;
}
.erp-about-close {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.9rem;
    height: 1.9rem;
    border-radius: var(--erp-radius-sm, .5rem);
    color: var(--erp-text-muted, #6b7280);
    cursor: pointer;
}
.erp-about-close:hover { background: var(--erp-bg, #f3f4f6); color: var(--erp-text, #1f2937); }

.erp-about-body {
    padding: 1.1rem;
    font-size: .9rem;
    line-height: 1.5;
}
.erp-about-body p { margin: 0 0 .7rem; }
.erp-about-body p:last-child { margin-bottom: 0; }
.erp-about-body a { color: var(--erp-primary, #0d6efd); }
.erp-about-ads {
    margin-top: .9rem;
    padding-top: .8rem;
    border-top: 1px solid var(--erp-border, #e5e7eb);
    color: var(--erp-text-muted, #6b7280);
}

/* ── Left sidebar ───────────────────────────────────────── */
.erp-sidebar {
    grid-area: sidebar;
    background: var(--erp-sidebar-bg);
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

.erp-sidebar-close { display: none; }

.erp-sidenav {
    list-style: none;
    padding: .75rem 0;
    margin: 0;
}

.erp-sidenav-section {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1rem .35rem;
    font-size: .6875rem;
    font-weight: 700;
    letter-spacing: .07em;
    text-transform: uppercase;
    color: var(--erp-sidebar-muted);
    cursor: pointer;
    user-select: none;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}
.erp-sidenav-section:hover {
    color: var(--erp-sidebar-text-on);
}

.erp-sidenav-subsection {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: .5rem 1rem .2rem 1.75rem;
    font-size: .625rem;
    font-weight: 600;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--erp-sidebar-muted);
    opacity: .7;
    cursor: pointer;
    user-select: none;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
}
.erp-sidenav-subsection:hover {
    opacity: 1;
}

.erp-nav-chevron {
    font-size: .65rem;
    flex-shrink: 0;
    transition: transform .2s ease;
    margin-bottom: -.15rem; /* optical alignment with uppercase label */
}
.erp-nav-chevron.collapsed {
    transform: rotate(-90deg);
}

.erp-sidenav-link {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .5rem 1rem;
    color: var(--erp-sidebar-text);
    text-decoration: none;
    font-size: .875rem;
    border-left: 3px solid transparent;
    transition: background .12s, color .12s, border-color .12s;
}
.erp-sidenav-link i {
    font-size: 1rem;
    width: 1.125rem;
    text-align: center;
    flex-shrink: 0;
}
.erp-sidenav-link:hover {
    background: var(--erp-sidebar-hover);
    color: var(--erp-sidebar-text-on);
}
.erp-sidenav-link.active,
.erp-sidenav-link[aria-current="page"] {
    background: var(--erp-sidebar-hover);
    color: var(--erp-sidebar-text-on);
    border-left-color: var(--erp-sidebar-active);
}

/* ── Main content area ──────────────────────────────────── */
.erp-main {
    grid-area: main;
    overflow-y: auto;
    padding: 1.75rem 2rem;
    background: var(--erp-bg);
}

/* ── ErpGrid ────────────────────────────────────────────── */
.erp-grid-row td {
    transition: background .1s;
}

.erp-grid-row--clickable {
    cursor: pointer;
}

.erp-grid-row--clickable:hover td {
    background: var(--erp-primary-light);
}

/* ── Detail form tabs ───────────────────────────────────── */
.erp-detail-tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--erp-border);
    margin-bottom: 1.25rem;
}

.erp-detail-tab {
    padding: .5rem 1rem;
    font-size: .875rem;
    font-weight: 500;
    color: var(--erp-text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    cursor: pointer;
    transition: color .12s, border-color .12s;
    white-space: nowrap;
}

.erp-detail-tab:hover:not(:disabled) {
    color: var(--erp-text);
}

.erp-detail-tab.active {
    color: var(--erp-primary);
    border-bottom-color: var(--erp-primary);
    font-weight: 600;
}

.erp-detail-tab:disabled {
    opacity: .4;
    cursor: not-allowed;
}

/* ── Status badges ──────────────────────────────────────── */
.erp-badge {
    display: inline-block;
    font-size: .72rem;
    font-weight: 600;
    padding: .2rem .45rem;
    border-radius: .25rem;
    white-space: nowrap;
}

.erp-badge-success {
    background: #dcfce7;
    color: #166534;
}

.erp-badge-warning {
    background: #fef9c3;
    color: #854d0e;
}

.erp-badge-neutral {
    background: #f3f4f6;
    color: #6b7280;
}

/* ── Responsive — mobile / tablet (< 1024 px) ───────────── */
@media (max-width: 1023px) {
    .erp-shell {
        grid-template-areas:
            "topbar"
            "main";
        grid-template-columns: 1fr;
    }

    .erp-hamburger { display: flex; }

    .erp-sidebar {
        position: fixed;
        top:    var(--erp-topbar-height);
        left:   0;
        bottom: 0;
        width:  var(--erp-sidebar-width);
        transform: translateX(-100%);
        transition: transform .22s ease;
        z-index: 150;
        box-shadow: var(--erp-shadow-lg);
    }

    /* Checkbox checked → sidebar slides in */
    .erp-nav-toggle-input:checked + .erp-shell .erp-sidebar {
        transform: translateX(0);
    }

    /* Translucent backdrop behind the open sidebar */
    .erp-nav-toggle-input:checked + .erp-shell::before {
        content: '';
        position: fixed;
        inset: var(--erp-topbar-height) 0 0 0;
        background: rgb(0 0 0 / .35);
        z-index: 140;
    }

    /* Close (×) button inside sidebar on mobile */
    .erp-sidebar-close {
        display: flex;
        align-items: center;
        justify-content: flex-end;
        padding: .5rem .75rem;
        cursor: pointer;
        color: var(--erp-sidebar-muted);
        font-size: 1.125rem;
    }
    .erp-sidebar-close:hover { color: var(--erp-sidebar-text-on); }

    .erp-main { padding: 1.25rem 1rem; }
}

/* ── DMS Upload Drop Zone ───────────────────────────────── */
.dms-drop-zone {
    border: 2px dashed var(--erp-border);
    border-radius: var(--erp-radius);
    background: var(--erp-surface);
    padding: 2rem 1.5rem;
    text-align: center;
    cursor: pointer;
    transition: border-color .15s, background .15s;
    user-select: none;
}
.dms-drop-zone:hover,
.dms-drop-zone.dms-drop-active {
    border-color: var(--erp-primary);
    background: var(--erp-primary-light);
}
.dms-drop-zone.dms-uploading {
    cursor: default;
    opacity: .75;
}
.dms-drop-hint { color: var(--erp-text-muted); }