/* Datei: style.css (Final korrigierte Version) */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --font-family: 'Inter', sans-serif;
    --primary-color: #e53e3e; /* Rot aus den Bildern */
    --primary-hover-color: #c53030;
    --bg-color: #fcf8f7; /* Leicht rötlicher Hintergrund */
    --content-bg-color: #ffffff;
    --sidebar-bg-color: #ffffff;
    --border-color: #f3eaea;
    --input-border-color: #cbd5e0;
    --text-color: #2d3748;
    --text-light-color: #718096;
    --text-on-primary: #ffffff;
    --status-ausstehend-bg: #feebc8;
    --status-ausstehend-text: #9c4221;
    --status-ueberfaellig-bg: #fed7d7;
    --status-ueberfaellig-text: #9b2c2c;
    --status-bezahlt-bg: #c6f6d5;
    --status-bezahlt-text: #2f855a;
    --border-radius: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --transition: all 0.2s ease-in-out;
}

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

body {
    margin: 0;
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app-container { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
    width: 240px;
    background-color: var(--sidebar-bg-color);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    flex-shrink: 0;
}
.sidebar-header { margin-bottom: 2rem; }
.app-logo { font-size: 1.5rem; font-weight: 700; color: var(--text-color); text-decoration: none; }
.sidebar-nav { display: flex; flex-direction: column; gap: 0.5rem; }
.nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--text-light-color);
    font-weight: 500;
    transition: var(--transition);
}
.nav-link:hover { background-color: var(--bg-color); color: var(--text-color); }
.nav-link.active { background-color: var(--bg-color); color: var(--text-color); font-weight: 600; }
.nav-link svg { width: 20px; height: 20px; }

/* Main Content Area */
.main-wrapper { flex-grow: 1; display: flex; flex-direction: column; }
.main-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    background-color: var(--content-bg-color);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
#view-title { margin: 0; font-size: 1.75rem; font-weight: 600; }
.header-right { display: flex; align-items: center; gap: 1.5rem; }

/* User Menu Fix */
.user-menu { position: relative; }
.user-menu .avatar { width: 40px; height: 40px; border-radius: 50%; object-fit: cover; cursor: pointer; }
.user-menu .user-dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 10px);
    background-color: var(--content-bg-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    width: 200px;
    padding: 0.5rem;
    z-index: 100;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.2s ease-in-out, transform 0.2s ease-in-out;
    pointer-events: none;
}
.user-menu:hover .user-dropdown {
    display: block;
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
.user-dropdown .user-info { padding: 0.75rem 1rem; border-bottom: 1px solid var(--border-color); margin-bottom: 0.5rem; }
.user-dropdown a { display: block; padding: 0.75rem 1rem; text-decoration: none; color: var(--text-color); border-radius: 4px; }
.user-dropdown a:hover { background-color: var(--bg-color); }

.main-content { padding: 2rem; flex-grow: 1; overflow-y: auto; }

/* Views */
.view { display: none; }
.view.active { display: block; animation: fadeIn 0.3s ease-in-out; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Dashboard & Content Cards */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; margin-bottom: 2.5rem; }
.stat-card { background-color: var(--content-bg-color); padding: 1.5rem; border-radius: var(--border-radius); border: 1px solid var(--border-color); }
.stat-card h3 { margin: 0 0 0.5rem; font-size: 1rem; font-weight: 500; color: var(--text-light-color); }
.stat-card .stat-value { font-size: 2.25rem; font-weight: 700; color: var(--text-color); }
.content-card { background-color: var(--content-bg-color); padding: 2rem; border-radius: var(--border-radius); border: 1px solid var(--border-color); }
.content-card-header h2 { margin: 0; font-size: 1.25rem; }

/* Tables */
.data-table { width: 100%; border-collapse: collapse; }
.data-table th, .data-table td { padding: 1rem 1.5rem; text-align: left; border-bottom: 1px solid var(--border-color); }
.data-table th { font-size: 0.875rem; font-weight: 600; color: var(--text-light-color); text-transform: uppercase; }
.data-table tbody tr:hover { background-color: var(--bg-color); }
.text-right { text-align: right; }

/* Status Badges */
.status-badge { display: inline-block; padding: 0.25rem 0.75rem; border-radius: 9999px; font-size: 0.875rem; font-weight: 600; text-align: center; white-space: nowrap; }
.status-badge.Ausstehend, .status-badge.Offen { background-color: var(--status-ausstehend-bg); color: var(--status-ausstehend-text); }
.status-badge.Überfällig, .status-badge.Storniert { background-color: var(--status-ueberfaellig-bg); color: var(--status-ueberfaellig-text); }
.status-badge.Bezahlt { background-color: var(--status-bezahlt-bg); color: var(--status-bezahlt-text); }
.status-badge.Entwurf { background-color: #e2e8f0; color: #4a5568; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.75rem 1.5rem; border: 1px solid transparent; border-radius: var(--border-radius); font-size: 1rem; font-weight: 600; cursor: pointer; text-decoration: none; transition: var(--transition); }
.btn svg { width: 20px; height: 20px; }
.btn-primary { background-color: var(--primary-color); color: var(--text-on-primary); }
.btn-primary:hover { background-color: var(--primary-hover-color); }
.btn-secondary { background-color: var(--content-bg-color); color: var(--text-color); border-color: var(--input-border-color); }
.btn-secondary:hover { background-color: #f7fafc; border-color: #a0aec0; }
.btn-danger { background-color: var(--primary-color); color: var(--text-on-primary); }
.btn-danger:hover { background-color: var(--primary-hover-color); }
.action-buttons { display: flex; gap: 0.75rem; justify-content: flex-end; }
.btn-icon { background: none; border: none; cursor: pointer; color: var(--text-light-color); padding: 0.5rem; border-radius: 50%; }
.btn-icon:hover { background-color: var(--bg-color); color: var(--text-color); }
.btn-icon svg { width: 18px; height: 18px; }

/* Search and Filter */
.view-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; flex-wrap: wrap; gap: 1rem; }
.search-bar { position: relative; width: 100%; max-width: 400px; }
.search-bar svg { position: absolute; left: 1rem; top: 50%; transform: translateY(-50%); color: var(--text-light-color); width: 20px; height: 20px; }
.search-bar input { width: 100%; padding: 0.75rem 1rem 0.75rem 3rem; border-radius: var(--border-radius); border: 1px solid var(--border-color); background-color: var(--content-bg-color); font-size: 1rem; }

/* Modals */
.modal { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(17, 24, 39, 0.6); backdrop-filter: blur(4px); animation: fadeIn 0.3s ease-out; }
.modal-content { background-color: var(--content-bg-color); margin: 5% auto; padding: 2.5rem; border-radius: var(--border-radius); width: 90%; max-width: 800px; position: relative; animation: slideIn 0.4s; }
@keyframes slideIn { from { transform: translateY(-30px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
.modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.modal-header h2 { margin: 0; font-size: 1.5rem; }
.close-btn { background: none; border: none; font-size: 2rem; color: var(--text-light-color); cursor: pointer; line-height: 1; padding: 0; }

/* Forms */
.form-section-heading { font-size: 1.1rem; font-weight: 600; margin-top: 2rem; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border-color); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1.5rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
.form-group.full-width { grid-column: 1 / -1; }
.form-group label { font-weight: 500; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 0.75rem; border: 1px solid var(--input-border-color); border-radius: var(--border-radius); background-color: var(--content-bg-color); transition: var(--transition); font-size: 1rem; font-family: inherit; }
.form-group select { appearance: none; background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e"); background-position: right 0.5rem center; background-repeat: no-repeat; background-size: 1.5em 1.5em; padding-right: 2.5rem; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 2px rgba(229, 62, 62, 0.2); }
textarea { resize: vertical; min-height: 100px; }
.form-actions { margin-top: 2rem; text-align: right; display: flex; justify-content: flex-end; gap: 1rem; }

/* Invoice Items Form */
.item-list-header, .item-row { display: grid; grid-template-columns: 4fr 1fr 1.5fr 1.5fr 40px; gap: 1rem; align-items: center; margin-bottom: 0.75rem; }
.item-list-header { font-weight: 600; font-size: 0.875rem; color: var(--text-light-color); padding: 0 0.5rem; }
.remove-item-btn { justify-self: center; }
.add-item-controls { display: flex; gap: 1rem; margin-top: 1rem; align-items: center; }
.add-item-controls select { flex-grow: 1; }

/* Login Page */
.login-body { display: flex; justify-content: center; align-items: center; height: 100vh; background-color: var(--bg-color); }
.login-box { background: var(--content-bg-color); padding: 3rem; border-radius: var(--border-radius); box-shadow: var(--shadow); width: 100%; max-width: 420px; text-align: center; }
.login-box h1 { font-size: 1.75rem; margin-bottom: 0.5rem; }
.login-box p { color: var(--text-light-color); margin-bottom: 2rem; }
.login-btn { width: 100%; margin-top: 1.5rem; }
.error-message { color: var(--primary-color); background-color: #fed7d7; border: 1px solid var(--primary-color); border-radius: var(--border-radius); padding: 1rem; margin-top: 1rem; text-align: center; }

/* Responsive Design */
@media (max-width: 768px) {
    .app-container { flex-direction: column; }
    .sidebar { width: 100%; height: auto; flex-direction: row; justify-content: space-between; padding: 1rem; border-right: none; border-bottom: 1px solid var(--border-color); }
    .sidebar-nav { flex-direction: row; overflow-x: auto; }
    .nav-link span { display: none; }
    .nav-link svg { margin: 0 auto; }
    .main-header { flex-direction: column; gap: 1rem; padding: 1rem; }
    .main-content { padding: 1rem; }
    .stats-grid, .form-grid { grid-template-columns: 1fr; }
    .view-header { flex-direction: column; gap: 1rem; align-items: stretch; }
    .search-bar { max-width: 100%; }
    .data-table { font-size: 0.875rem; }
    .data-table th, .data-table td { padding: 0.75rem; }
    .item-list-header, .item-row { grid-template-columns: 2fr 1fr 1fr 1fr 30px; font-size: 0.8rem; }
}