:root {
    --color-primary: #a178f7;
    --color-primary-bg: #f3e8ff;
    --color-secondary: #fff5ca;
    --color-text: #1f2937;
    --color-bg: #f9fafb;
    --color-white: #ffffff;
    --color-border: #e5e7eb;
    --sidebar-width: 260px;
    --header-height: 64px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar (Desktop) --- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-white);
    border-right: 1px solid var(--color-border);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.brand {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid #f3f4f6;
}

.brand img {
    height: 40px;
    width: auto;
}

.nav-links {
    flex: 1;
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: #4b5563;
    border-radius: 0.5rem;
    font-weight: 500;
    transition: all 0.2s;
}

.nav-item:hover {
    background-color: #f9fafb;
    color: #111827;
}

.nav-item.active {
    background-color: var(--color-primary-bg);
    color: var(--color-primary);
}

.copyright {
    padding: 1rem;
    font-size: 0.75rem;
    color: #9ca3af;
    text-align: center;
    border-top: 1px solid #f3f4f6;
}

/* --- Main Content Area --- */
.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.top-header {
    height: var(--header-height);
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 90;
}

.page-title {
    font-weight: 600;
    font-size: 1.125rem;
    text-transform: capitalize;
}

.user-avatar {
    width: 32px;
    height: 32px;
    background: #f3f4f6;
    border-radius: 50%;
}

/* Content */
.content-area {
    padding: 2.5rem;
    flex: 1;
}

/* Footer */
.main-footer {
    height: var(--header-height);
    border-top: 1px solid var(--color-border);
    background: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2.5rem;
    font-size: 0.75rem;
    color: #9ca3af;
}

/* --- Components --- */
.info-card {
    background-color: var(--color-secondary);
    border: 1px solid #fef08a;
    border-radius: 1rem;
    padding: 2rem;
    display: flex;
    gap: 1.5rem;
    align-items: center;
    margin-bottom: 2rem;
}

.login-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid var(--color-border);
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    max-width: 450px;
    margin: 2rem auto;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

.form-input {
    width: 100%;
    padding: 0.5rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    outline: none;
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(161, 120, 247, 0.2);
}

.btn-primary {
    width: 100%;
    background-color: var(--color-primary);
    color: white;
    padding: 0.75rem;
    border-radius: 0.5rem;
    border: none;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    opacity: 0.9;
}

/* --- Mobile Responsiveness --- */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: #4b5563;
}

.mobile-menu-overlay {
    position: fixed;
    inset: 0;
    background: white;
    z-index: 200;
    transform: translateX(-100%);
    transition: transform 0.3s ease-in-out;
    display: flex;
    flex-direction: column;
}

.mobile-menu-overlay.open {
    transform: translateX(0);
}

/* ÄNDERUNG: Von 768px auf 1024px erhöht */
@media (max-width: 1280px) {
    .sidebar { display: none; }
    .main-wrapper { margin-left: 0; }
    .mobile-toggle { display: block; margin-right: 1rem; }
    .content-area { padding: 1.5rem; }
    .info-card { flex-direction: column; align-items: flex-start; }
    /* Damit Footer-Elemente auch auf Tablets sauber umbrechen */
    .md\:block { display: none !important; } 
}