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

body {
    font-family: 'Quicksand', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #4a4a4a;
}

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

/* Landing Page */
.landing {
    text-align: center;
    padding: 50px 20px;
}

.landing h1 {
    font-size: 3.5em;
    color: white;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.landing p {
    font-size: 1.2em;
    color: white;
    margin-bottom: 40px;
    opacity: 0.9;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.feature-card {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    color: #667eea;
    margin-bottom: 15px;
    font-size: 1.5em;
}

/* Auth Forms */
.auth-container {
    max-width: 400px;
    margin: 50px auto;
    background: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.auth-container h2 {
    text-align: center;
    color: #667eea;
    margin-bottom: 30px;
    font-size: 2em;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    color: #4a4a4a;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-block {
    width: 100%;
}

/* Dashboard */
.dashboard {
    background: white;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #f0f0f0;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-info span {
    color: #667eea;
    font-weight: 600;
}

.upload-form {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 15px;
    margin-bottom: 30px;
}

.file-input {
    border: 2px dashed #667eea;
    padding: 30px;
    text-align: center;
    border-radius: 10px;
    cursor: pointer;
    margin-bottom: 20px;
}

.file-input:hover {
    background: rgba(102, 126, 234, 0.05);
}

.files-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.file-card {
    background: #f9f9f9;
    border-radius: 15px;
    padding: 20px;
    transition: transform 0.3s ease;
}

.file-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.file-icon {
    font-size: 2.5em;
    margin-bottom: 10px;
}

.file-name {
    font-weight: 600;
    margin-bottom: 10px;
    word-break: break-word;
}

.file-meta {
    font-size: 0.9em;
    color: #888;
    margin-bottom: 15px;
}

.file-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-small {
    padding: 8px 15px;
    font-size: 0.9em;
}

.password-protect {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #e0e0e0;
}

.password-input {
    width: 100%;
    padding: 8px;
    border: 1px solid #e0e0e0;
    border-radius: 5px;
    margin-bottom: 10px;
}

/* Alert Messages */
.alert {
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Links */
a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

a:hover {
    text-decoration: underline;
}

.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

/* Cute animations */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.float {
    animation: float 3s ease-in-out infinite;
}