/* === Global Styles === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    color: #e0e0e0;
    background: linear-gradient(135deg, #0f0f23 0%, #1a1a3e 100%);
    min-height: 100vh;
}

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

/* === Header === */
header {
    text-align: center;
    margin-bottom: 40px;
    padding: 40px 20px 20px;
}

.logo {
    font-size: 3rem;
    margin-bottom: 15px;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #7431ff 0%, #9d6eff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.1rem;
    color: #a0a0a0;
}

/* === Form Elements === */
.auth-section {
    background: rgba(116, 49, 255, 0.05);
    border: 1px solid rgba(116, 49, 255, 0.2);
    border-radius: 12px;
    padding: 30px;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #e0e0e0;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid rgba(116, 49, 255, 0.3);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: #e0e0e0;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #7431ff;
    background: rgba(116, 49, 255, 0.1);
    box-shadow: 0 0 0 3px rgba(116, 49, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
    font-family: 'Courier New', monospace;
}

/* === Buttons === */
button {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #7431ff 0%, #9d6eff 100%);
    color: white;
    width: 100%;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(116, 49, 255, 0.4);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-secondary {
    background: rgba(116, 49, 255, 0.2);
    color: #e0e0e0;
    border: 1px solid rgba(116, 49, 255, 0.3);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(116, 49, 255, 0.3);
    border-color: #7431ff;
}

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

.btn-download {
    background: rgba(76, 175, 80, 0.2);
    color: #4caf50;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.btn-download:hover {
    background: rgba(76, 175, 80, 0.3);
    border-color: #4caf50;
}

/* === Status Boxes === */
.status-box {
    background: rgba(116, 49, 255, 0.05);
    border-left: 4px solid #7431ff;
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.status-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.status-text {
    flex: 1;
}

.error {
    background: rgba(211, 47, 47, 0.1);
    border-left-color: #d32f2f;
    color: #ff8a80;
}

.success {
    background: rgba(76, 175, 80, 0.1);
    border-left-color: #4caf50;
    color: #81c784;
}

.info {
    background: rgba(33, 150, 243, 0.1);
    border-left-color: #2196f3;
    color: #64b5f6;
}

/* === Progress Bar === */
.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(116, 49, 255, 0.1);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 10px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #7431ff 0%, #9d6eff 100%);
    width: 0%;
    transition: width 0.3s ease;
}

/* === File Browser === */
.file-browser {
    background: rgba(116, 49, 255, 0.05);
    border: 1px solid rgba(116, 49, 255, 0.2);
    border-radius: 12px;
    padding: 20px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 0.95rem;
    flex-wrap: wrap;
}

.breadcrumb-item {
    color: #7431ff;
    cursor: pointer;
    padding: 0;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.breadcrumb-item:hover {
    background: rgba(116, 49, 255, 0.2);
}

.breadcrumb-separator {
    color: #606060;
}

.file-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.file-item {
    display: flex;
    align-items: center;
    padding: 15px;
    background: rgba(116, 49, 255, 0.08);
    border: 1px solid rgba(116, 49, 255, 0.15);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-item:hover {
    background: rgba(116, 49, 255, 0.15);
    border-color: rgba(116, 49, 255, 0.3);
    transform: translateX(5px);
}

.file-icon {
    font-size: 1.5rem;
    margin-right: 15px;
    flex-shrink: 0;
    width: 30px;
    text-align: center;
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-weight: 600;
    margin-bottom: 4px;
    word-break: break-word;
}

.file-path {
    font-size: 0.85rem;
    color: #a0a0a0;
    font-family: 'Courier New', monospace;
}

.file-actions {
    display: flex;
    gap: 10px;
    margin-left: 15px;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #a0a0a0;
}

.empty-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-text {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.shared-files-section {
    margin-bottom: 0px;
}

.shared-files-header {
    color: #7431ff;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    padding: 12px;
    background: rgba(116, 49, 255, 0.08);
    border: 1px solid rgba(116, 49, 255, 0.15);
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
    user-select: none;
    transition: all 0.3s ease;
}

.shared-files-header:hover {
    background: rgba(116, 49, 255, 0.15);
    border-color: rgba(116, 49, 255, 0.3);
}

.shared-files-toggle {
    display: inline-block;
    transition: transform 0.3s ease;
}

.shared-files-toggle.expanded {
    transform: rotate(180deg);
}

.shared-files-list {
    display: none;
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
}

.shared-files-list.visible {
    display: flex;
}

.shared-files-separator {
    height: 1px;
    background: rgba(116, 49, 255, 0.2);
    margin: 20px 0;
}

/* === Spinner === */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top: 2px solid #7431ff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* === Utility Classes === */
.hidden {
    display: none !important;
}

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

.text-muted {
    color: #a0a0a0;
}

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

.mb-20 {
    margin-bottom: 20px;
}

/* === Responsive === */
@media (max-width: 768px) {
    header {
        padding: 30px 20px 15px;
    }

    h1 {
        font-size: 1.8rem;
    }

    .auth-section {
        padding: 20px;
    }

    .file-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .file-icon {
        margin-right: 0;
        margin-bottom: 10px;
    }

    .file-actions {
        width: 100%;
        margin-left: 0;
        margin-top: 10px;
    }

    .btn-small {
        flex: 1;
    }

    .breadcrumb {
        font-size: 0.85rem;
    }
}

/* === Footer === */
footer {
    text-align: center;
    margin-top: 80px;
    padding-top: 40px;
    border-top: 1px solid rgba(116, 49, 255, 0.2);
    color: #808080;
    font-size: 0.95rem;
}

footer p {
    margin: 8px 0;
}