/**
 * NAKO Upload-System - Globales Stylesheet
 * Version 2.0
 */

:root {
    --primary-color: #005A99; /* Ein professionelles Blau */
    --secondary-color: #EFEFEF;
    --accent-color: #007BFF;
    --text-color: #333;
    --light-text-color: #fff;
    --background-color: #f4f7f9;
    --border-color: #ddd;
    --success-color: #28a745;
    --error-color: #dc3545;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --border-radius: 8px;
    --box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    padding: 20px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    box-sizing: border-box;
}

.container {
    width: 100%;
    max-width: 800px;
    margin: auto;
    flex-grow: 1;
}

/* --- Header --- */
.main-header {
    text-align: center;
    margin-bottom: 40px;
}
.main-header h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin: 0 0 10px 0;
}
.main-header p {
    font-size: 1.1rem;
    color: #666;
}
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    text-align: left;
    margin-bottom: 40px;
}
.admin-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* --- Card-Layout --- */
.card {
    background-color: #fff;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    margin-bottom: 30px;
}

/* --- Formularelemente --- */
input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    box-sizing: border-box;
    transition: border-color 0.2s, box-shadow 0.2s;
}
input[type="text"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.2);
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

/* --- Buttons --- */
.button-primary, .button-secondary, .button-danger {
    padding: 12px 25px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}
.button-primary {
    background-color: var(--primary-color);
    color: var(--light-text-color);
}
.button-primary:hover:not(:disabled) {
    background-color: #00487a;
}
.button-primary:disabled {
    background-color: #999;
    cursor: not-allowed;
}
.button-secondary {
    background-color: var(--secondary-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
}
.button-secondary:hover {
    background-color: #e2e2e2;
}
.button-danger {
    background-color: var(--error-color);
    color: var(--light-text-color);
}
.button-danger:hover {
    background-color: #c82333;
}

/* --- Code-Eingabe --- */
#code-form {
    display: flex;
    gap: 10px;
    align-items: center;
}
#upload-code {
    font-size: 1.5rem;
    text-align: center;
    letter-spacing: 0.5em;
    flex-grow: 1;
}

/* --- Upload-Bereich --- */
#drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s, background-color 0.2s;
}
#drop-zone.highlight {
    border-color: var(--accent-color);
    background-color: #f0f8ff;
}
#drop-zone p {
    margin: 5px 0;
}
#file-input {
    display: none;
}
#file-list ul {
    list-style: none;
    padding: 0;
    margin-top: 20px;
}
#file-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 4px;
    margin-bottom: 5px;
}
.remove-file-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--error-color);
    cursor: pointer;
}

/* --- Fortschrittsanzeige & Meldungen --- */
#upload-progress-container {
    width: 100%;
    background-color: #e9ecef;
    border-radius: var(--border-radius);
    margin: 20px 0;
}
#upload-progress-bar {
    height: 20px;
    width: 0;
    background-color: var(--success-color);
    border-radius: var(--border-radius);
    transition: width 0.3s ease;
}
.error-message {
    color: var(--error-color);
    background-color: #f8d7da;
    border: 1px solid #f5c6cb;
    padding: 10px;
    border-radius: var(--border-radius);
    margin-top: 15px;
}
.success-section {
    text-align: center;
}
.success-icon {
    font-size: 4rem;
    color: var(--success-color);
    width: 80px;
    height: 80px;
    line-height: 80px;
    border: 3px solid var(--success-color);
    border-radius: 50%;
    margin: 0 auto 20px auto;
}
.code-highlight {
    font-weight: bold;
    color: var(--primary-color);
    background-color: #e6f2ff;
    padding: 2px 6px;
    border-radius: 4px;
}

/* --- Admin-Panel --- */
.dashboard-controls, .dashboard-stats {
    margin-bottom: 30px;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    text-align: center;
}
.stat-item {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: var(--border-radius);
}
.stat-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}
.stat-label {
    color: #666;
}
.codes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.code-card {
    background-color: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s;
}
.code-card:hover {
    box-shadow: var(--box-shadow);
}
.code-card-header, .code-card-body, .code-card-footer {
    padding: 15px;
}
.code-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
}
.code-value {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--primary-color);
}
.code-status {
    padding: 5px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--light-text-color);
}
.status-active { background-color: var(--success-color); }
.status-used { background-color: #ffc107; color: var(--text-color); }
.status-expired { background-color: #6c757d; }
.code-card-body {
    flex-grow: 1;
}
.code-card-body p { margin: 0 0 10px 0; }
.code-card-footer {
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* --- Modal --- */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.6);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}
.modal-content {
    background: #fff;
    padding: 30px;
    border-radius: var(--border-radius);
    width: 90%;
    max-width: 600px;
    position: relative;
    max-height: 80vh;
    overflow-y: auto;
}
.modal-close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: #999;
}
#modal-file-list ul {
    list-style: none;
    padding: 0;
}
#modal-file-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
}

/* --- Footer --- */
.main-footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: #999;
}
/* Ergänzung für admin.php "Angemeldet bleiben" Checkbox */
.form-group-checkbox {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.form-group-checkbox input[type="checkbox"] {
    margin-right: 10px;
    width: auto;
}

.form-group-checkbox label {
    margin-bottom: 0;
    font-weight: normal;
}