:root {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --primary-color: #bb86fc;
    --secondary-color: #03dac6;
    --danger-color: #cf6679;
    --card-bg: #1e1e1e;
    --input-bg: #2c2c2c;
    --border-color: #333333;
}

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

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

header {
    background-color: var(--card-bg);
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

nav ul {
    list-style-type: none;
    padding: 0;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}

nav ul li a:hover {
    color: var(--secondary-color);
}

h1,
h2,
h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--bg-color);
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition:
        background-color 0.3s ease,
        transform 0.1s ease;
    text-decoration: none;
    font-size: 1rem;
    margin: 5px;
}

.btn:hover {
    background-color: #9a67ea;
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: var(--secondary-color);
}

.btn-secondary:hover {
    background-color: #04b7a1;
}

.btn-danger {
    background-color: var(--danger-color);
}

.btn-danger:hover {
    background-color: #ff5c8d;
}

form {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1rem;
}

input[type="text"],
input[type="password"],
input[type="file"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--input-bg);
    color: var(--text-color);
    font-size: 1rem;
}

input[type="file"] {
    padding: 5px;
}

label {
    display: block;
    margin-bottom: 5px;
    color: var(--secondary-color);
}

#file-list {
    list-style-type: none;
    padding: 0;
}

#file-list li {
    background-color: var(--card-bg);
    margin-bottom: 10px;
    padding: 15px;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.file-actions {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
}

th,
td {
    text-align: left;
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--primary-color);
    color: var(--bg-color);
}

tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.05);
}

.loading {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--text-color);
    padding: 20px;
    border-radius: 5px;
    z-index: 1000;
}

.storage-info {
    margin-bottom: 20px;
}

progress {
    width: 100%;
    height: 20px;
    -webkit-appearance: none;
    appearance: none;
}

progress::-webkit-progress-bar {
    background-color: var(--input-bg);
    border-radius: 10px;
}

progress::-webkit-progress-value {
    background-color: var(--primary-color);
    border-radius: 10px;
}

progress::-moz-progress-bar {
    background-color: var(--primary-color);
    border-radius: 10px;
}

.warning {
    color: var(--danger-color);
    margin-bottom: 10px;
}

#password-strength {
    height: 5px;
    margin-top: 5px;
    transition: all 0.3s ease;
}

#password-strength.weak {
    background-color: #ff4136;
    width: 33.33%;
}

#password-strength.medium {
    background-color: #ffdc00;
    width: 66.66%;
}

#password-strength.strong {
    background-color: #2ecc40;
    width: 100%;
}

@media (max-width: 768px) {
    .file-actions {
        flex-direction: column;
    }

    .file-actions > * {
        margin-bottom: 10px;
        width: 100%;
    }

    #file-list li {
        flex-direction: column;
        align-items: flex-start;
    }

    #file-list li button {
        margin-top: 10px;
    }

    table {
        font-size: 0.9rem;
    }

    th,
    td {
        padding: 8px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 10px;
    }

    h1 {
        font-size: 1.5rem;
    }

    .btn {
        font-size: 0.9rem;
        padding: 8px 16px;
    }

    table {
        font-size: 0.8rem;
    }

    th,
    td {
        padding: 6px;
    }
}