/* ============================================================
   CSS Custom Properties – Design System
   ============================================================ */
:root {
    /* Primärfarbe (Emerald) */
    --color-primary:          #10B981;
    --color-primary-hover:    #059669;
    --color-primary-light:    #D1FAE5;
    --color-primary-muted:    #6EE7B7;

    /* Hintergründe */
    --color-bg-app:           #F8F9FB;
    --color-bg-base:          #FFFFFF;
    --color-bg-subtle:        #F1F5F9;
    --color-bg-muted:         #E2E8F0;

    /* Sidebar */
    --color-sidebar-bg:       #FFFFFF;
    --color-sidebar-border:   #E2E8F0;
    --color-sidebar-item-hover: #F0FDF4;
    --color-sidebar-item-active-bg: #D1FAE5;
    --color-sidebar-item-active-text: #059669;
    --color-sidebar-text:     #64748B;
    --color-sidebar-icon:     #94A3B8;

    /* Text */
    --color-text-primary:     #0F172A;
    --color-text-secondary:   #475569;
    --color-text-muted:       #94A3B8;
    --color-text-inverse:     #FFFFFF;
    --color-text-link:        #10B981;

    /* Rahmen */
    --color-border:           #E2E8F0;
    --color-border-strong:    #CBD5E1;
    --color-border-focus:     #10B981;

    /* Status: Erfolg */
    --color-success:          #10B981;
    --color-success-bg:       #D1FAE5;
    --color-success-text:     #065F46;

    /* Status: Warnung */
    --color-warning:          #F59E0B;
    --color-warning-bg:       #FEF3C7;
    --color-warning-text:     #92400E;

    /* Status: Fehler */
    --color-danger:           #EF4444;
    --color-danger-bg:        #FEE2E2;
    --color-danger-text:      #991B1B;

    /* Status: Info */
    --color-info:             #3B82F6;
    --color-info-bg:          #DBEAFE;
    --color-info-text:        #1E40AF;

    /* Schatten */
    --shadow-card:  0 1px 3px 0 rgb(0 0 0 / 0.07), 0 1px 2px -1px rgb(0 0 0 / 0.07);
    --shadow-dropdown: 0 10px 15px -3px rgb(0 0 0 / 0.10), 0 4px 6px -4px rgb(0 0 0 / 0.10);
    --shadow-modal: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

.dark {
    --color-primary:          #34D399;
    --color-primary-hover:    #10B981;
    --color-primary-light:    #064E3B;
    --color-bg-app:           #0F172A;
    --color-bg-base:          #1E293B;
    --color-bg-subtle:        #334155;
    --color-bg-muted:         #475569;
    --color-sidebar-bg:       #1E293B;
    --color-sidebar-border:   #334155;
    --color-sidebar-item-hover: #1A3A2E;
    --color-sidebar-item-active-bg: #064E3B;
    --color-sidebar-item-active-text: #34D399;
    --color-sidebar-text:     #94A3B8;
    --color-sidebar-icon:     #64748B;
    --color-text-primary:     #F1F5F9;
    --color-text-secondary:   #94A3B8;
    --color-text-muted:       #64748B;
    --color-border:           #334155;
    --color-border-strong:    #475569;
    --color-border-focus:     #34D399;
    --color-success:          #34D399;
    --color-success-bg:       #064E3B;
    --color-success-text:     #6EE7B7;
    --color-warning:          #FBBF24;
    --color-warning-bg:       #451A03;
    --color-warning-text:     #FDE68A;
    --color-danger:           #F87171;
    --color-danger-bg:        #450A0A;
    --color-danger-text:      #FCA5A5;
    --color-info:             #60A5FA;
    --color-info-bg:          #1E3A5F;
    --color-info-text:        #BFDBFE;
}

/* ============================================================
   Design-System Shorthand-Klassen
   ============================================================ */

/* Karten */
.ds-card        { background-color: var(--color-bg-base); border-radius: 0.75rem; border: 1px solid var(--color-border); box-shadow: var(--shadow-card); }
.ds-card-header { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.5rem; border-bottom: 1px solid var(--color-border); }
.ds-card-body   { padding: 1.5rem; }
.ds-card-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--color-border); }

/* Tabelle */
.ds-table       { width: 100%; font-size: 0.875rem; border-collapse: collapse; }
.ds-th          { padding: 0.75rem 1rem; text-align: left; font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted); white-space: nowrap; border-bottom: 1px solid var(--color-border); }
.ds-td          { padding: 0.75rem 1rem; font-size: 0.875rem; color: var(--color-text-primary); }
.ds-tr          { border-bottom: 1px solid var(--color-border); transition: background-color 0.15s; }
.ds-tr:hover    { background-color: var(--color-bg-subtle); }
.ds-td-muted    { padding: 0.75rem 1rem; font-size: 0.875rem; color: var(--color-text-secondary); }

/* Buttons */
.ds-btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; font-weight: 500; border-radius: 0.5rem; transition: all 0.15s; cursor: pointer; border: none; text-decoration: none; }
.ds-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.ds-btn-primary   { height: 2.25rem; padding: 0 1rem; font-size: 0.875rem; background-color: var(--color-primary); color: #fff; }
.ds-btn-primary:hover:not(:disabled) { background-color: var(--color-primary-hover); }
.ds-btn-secondary { height: 2.25rem; padding: 0 1rem; font-size: 0.875rem; background-color: var(--color-bg-subtle); color: var(--color-text-primary); border: 1px solid var(--color-border); }
.ds-btn-secondary:hover:not(:disabled) { background-color: var(--color-bg-muted); }
.ds-btn-danger    { height: 2.25rem; padding: 0 1rem; font-size: 0.875rem; background-color: var(--color-danger); color: #fff; }
.ds-btn-danger:hover:not(:disabled) { opacity: 0.9; }
.ds-btn-warning   { height: 2.25rem; padding: 0 1rem; font-size: 0.875rem; background-color: var(--color-warning-bg); color: var(--color-warning-text); border: 1px solid var(--color-warning); }
.ds-btn-warning:hover:not(:disabled) { opacity: 0.9; }
.ds-btn-ghost     { height: 2.25rem; padding: 0 1rem; font-size: 0.875rem; color: var(--color-text-secondary); background: transparent; }
.ds-btn-ghost:hover:not(:disabled) { background-color: var(--color-bg-subtle); }
.ds-btn-outline-primary { height: 2.25rem; padding: 0 1rem; font-size: 0.875rem; background: transparent; color: var(--color-primary); border: 1px solid var(--color-primary); }
.ds-btn-outline-primary:hover:not(:disabled) { background-color: var(--color-primary-light); }
.ds-btn-sm { height: 2rem; padding: 0 0.75rem; font-size: 0.75rem; }
.ds-btn-xs { height: 1.75rem; padding: 0 0.5rem; font-size: 0.75rem; }

/* Badges */
.ds-badge         { display: inline-flex; align-items: center; padding: 0.125rem 0.625rem; border-radius: 9999px; font-size: 0.75rem; font-weight: 500; }
.ds-badge-success { background-color: var(--color-success-bg); color: var(--color-success-text); }
.ds-badge-warning { background-color: var(--color-warning-bg); color: var(--color-warning-text); }
.ds-badge-danger  { background-color: var(--color-danger-bg);  color: var(--color-danger-text); }
.ds-badge-info    { background-color: var(--color-info-bg);    color: var(--color-info-text); }
.ds-badge-neutral { background-color: var(--color-bg-muted);   color: var(--color-text-secondary); }
.ds-badge-primary { background-color: var(--color-primary-light); color: var(--color-primary-hover); }

/* Inputs */
.ds-input  { width: 100%; height: 2.5rem; padding: 0 0.75rem; border-radius: 0.5rem; border: 1px solid var(--color-border); background-color: var(--color-bg-base); font-size: 0.875rem; color: var(--color-text-primary); transition: border-color 0.15s, box-shadow 0.15s; font-family: inherit; }
.ds-input::placeholder { color: var(--color-text-muted); }
.ds-input:focus { outline: none; border-color: var(--color-border-focus); box-shadow: 0 0 0 3px rgb(16 185 129 / 0.15); }
.ds-input:disabled { background-color: var(--color-bg-subtle); opacity: 0.6; cursor: not-allowed; }
.ds-textarea { min-height: 5rem; height: auto; padding: 0.625rem 0.75rem; resize: vertical; }
.ds-select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2394A3B8' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14 2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 0.625rem center; padding-right: 2rem; cursor: pointer; }
.ds-label  { display: block; font-size: 0.875rem; font-weight: 500; color: var(--color-text-primary); margin-bottom: 0.375rem; }
.ds-label-sm { font-size: 0.75rem; color: var(--color-text-secondary); }

/* Modal */
.ds-modal-overlay { position: fixed; inset: 0; z-index: 50; background-color: rgb(0 0 0 / 0.5); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; padding: 1rem; }
.ds-modal-panel   { background-color: var(--color-bg-base); border-radius: 1rem; width: 100%; max-width: 36rem; box-shadow: var(--shadow-modal); }
.ds-modal-panel-lg { max-width: 48rem; }
.ds-modal-header  { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.5rem; border-bottom: 1px solid var(--color-border); }
.ds-modal-title   { font-size: 1rem; font-weight: 600; color: var(--color-text-primary); }
.ds-modal-body    { padding: 1.25rem 1.5rem; overflow-y: auto; max-height: 65vh; }
.ds-modal-footer  { display: flex; align-items: center; justify-content: flex-end; gap: 0.75rem; padding: 1rem 1.5rem; border-top: 1px solid var(--color-border); }
.ds-modal-close   { display: flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; border-radius: 0.375rem; color: var(--color-text-muted); transition: background-color 0.15s, color 0.15s; }
.ds-modal-close:hover { background-color: var(--color-bg-subtle); color: var(--color-text-primary); }

/* Alert */
.ds-alert         { padding: 0.75rem 1rem; border-radius: 0.5rem; font-size: 0.875rem; display: flex; align-items: flex-start; gap: 0.5rem; }
.ds-alert-success { background-color: var(--color-success-bg); color: var(--color-success-text); }
.ds-alert-warning { background-color: var(--color-warning-bg); color: var(--color-warning-text); }
.ds-alert-danger  { background-color: var(--color-danger-bg);  color: var(--color-danger-text); }
.ds-alert-info    { background-color: var(--color-info-bg);    color: var(--color-info-text); }

/* Spinner */
.ds-spinner { width: 1.5rem; height: 1.5rem; border: 2px solid var(--color-bg-muted); border-top-color: var(--color-primary); border-radius: 50%; animation: ds-spin 0.7s linear infinite; }
.ds-spinner-sm { width: 1rem; height: 1rem; }
@keyframes ds-spin { to { transform: rotate(360deg); } }

/* Section-Heading */
.ds-page-title { font-size: 1.25rem; font-weight: 700; color: var(--color-text-primary); }
.ds-page-subtitle { font-size: 0.875rem; color: var(--color-text-muted); }

/* ============================================================
   Blazor-spezifische Stile (unverändert)
   ============================================================ */
#blazor-error-ui {
    color-scheme: light only;
    background: #FEF3C7;
    border-top: 1px solid #F59E0B;
    color: #92400E;
    bottom: 0;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.1);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.75rem 1.5rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
    font-size: 0.875rem;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 1rem;
    top: 0.625rem;
    font-size: 1rem;
}

.blazor-error-boundary {
    background: var(--color-danger-bg);
    padding: 1rem 1rem 1rem 3rem;
    color: var(--color-danger-text);
    border-radius: 0.5rem;
    border: 1px solid var(--color-danger);
}

/* ============================================================
   QuickGrid – Design System Integration
   ============================================================ */

.quickgrid {
    width: 100%;
    font-size: 0.875rem;
    border-collapse: collapse;
}

.quickgrid thead tr {
    border-bottom: 1px solid var(--color-border);
}

.quickgrid th {
    padding: 0.625rem 1rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    background: var(--color-bg-subtle);
    white-space: nowrap;
}

.quickgrid th.sortable { cursor: pointer; user-select: none; }
.quickgrid th.sortable:hover { color: var(--color-text-primary); }
.quickgrid th.col-sort-asc::after  { content: " ↑"; opacity: 0.7; }
.quickgrid th.col-sort-desc::after { content: " ↓"; opacity: 0.7; }

.quickgrid td {
    padding: 0.75rem 1rem;
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border);
}

.quickgrid tbody tr { transition: background-color 0.1s; }
.quickgrid tbody tr:hover { background-color: var(--color-bg-subtle); }
.quickgrid tbody tr:last-child td { border-bottom: none; }
.quickgrid tbody tr.empty-row { display: none; }

/* Paginator */
.pagination-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.pagination-nav button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border-radius: 0.375rem;
    border: 1px solid var(--color-border);
    background: var(--color-bg-base);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: background-color 0.15s, border-color 0.15s;
}

.pagination-nav button:hover:not(:disabled) {
    background: var(--color-bg-subtle);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.pagination-nav button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.blazor-error-boundary::after {
    content: "Ein Fehler ist aufgetreten."
}

/* Blazor Formular-Validierung */
.valid.modified:not([type=checkbox]) {
    border-color: var(--color-success) !important;
}

.invalid {
    border-color: var(--color-danger) !important;
}

.validation-message {
    font-size: 0.75rem;
    color: var(--color-danger);
    margin-top: 0.25rem;
}