/* ============================================
   File Management System - Main Stylesheet
   Color Palette: Violets
   ============================================ */

/* Color Variables */
:root {
    --color-primary: #260C1A;      /* Deep dark purple/maroon */
    --color-secondary: #432E36;    /* Dark brownish-gray/mauve */
    --color-accent: #5FA842;       /* Medium warm brown/taupe */
    --color-light: #AFB0B6;        /* Light dusty rose/mauve-pink */
    --color-lighter: #EDBFG6;      /* Soft light pink/pale rose */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-success: #28a745;
    --color-danger: #dc3545;
    --color-warning: #ffc107;
    --color-info: #17a2b8;
    --color-gray-100: #f8f9fa;
    --color-gray-200: #e9ecef;
    --color-gray-300: #dee2e6;
    --color-gray-400: #ced4da;
    --color-gray-500: #6c757d;
    --color-gray-600: #495057;
    --color-gray-700: #343a40;
    --color-gray-800: #212529;
    --color-gray-900: #1a1a1a;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-gray-100);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-accent);
}

/* Layout */
.wrapper {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 250px;
    background-color: var(--color-primary);
    color: var(--color-white);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
    transition: all 0.3s ease;
    z-index: 1000;
}

.sidebar-header {
    padding: 20px;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
}

.sidebar-header p {
    font-size: 12px;
    color: var(--color-light);
}

.sidebar-nav {
    padding: 20px 0;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav ul li {
    margin-bottom: 5px;
}

.sidebar-nav ul li a {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: var(--color-white);
    transition: all 0.3s ease;
}

.sidebar-nav ul li a:hover,
.sidebar-nav ul li a.active {
    background-color: var(--color-secondary);
    color: var(--color-lighter);
}

.sidebar-nav ul li a i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 250px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header */
.header {
    background-color: var(--color-white);
    padding: 15px 30px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 999;
}

.header-left h1 {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 600;
}

.user-details {
    text-align: right;
}

.user-details .user-name {
    font-weight: 600;
    color: var(--color-primary);
}

.user-details .user-role {
    font-size: 12px;
    color: var(--color-gray-500);
}

.logout-btn {
    padding: 8px 16px;
    background-color: var(--color-danger);
    color: var(--color-white);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.logout-btn:hover {
    background-color: #c82333;
}

/* Content Area */
.content {
    flex: 1;
    padding: 30px;
    background-color: var(--color-gray-100);
}

/* Page Title */
.page-title {
    margin-bottom: 30px;
}

.page-title h2 {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 5px;
}

.page-title p {
    color: var(--color-gray-500);
}

/* Cards */
.card {
    background-color: var(--color-white);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
}

.card-header {
    padding: 20px;
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--color-gray-200);
    background-color: var(--color-gray-100);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
    text-decoration: none;
}

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

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

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

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

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

.btn-success:hover {
    background-color: #218838;
}

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

.btn-danger:hover {
    background-color: #c82333;
}

.btn-warning {
    background-color: var(--color-warning);
    color: var(--color-gray-800);
}

.btn-warning:hover {
    background-color: #e0a800;
}

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

.btn-info:hover {
    background-color: #138496;
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

.btn-lg {
    padding: 15px 30px;
    font-size: 16px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-control {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid var(--color-gray-300);
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(38, 12, 26, 0.1);
}

.form-control:disabled {
    background-color: var(--color-gray-200);
    cursor: not-allowed;
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

select.form-control {
    cursor: pointer;
}

/* Tables */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table thead {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.table th,
.table td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid var(--color-gray-200);
}

.table th {
    font-weight: 600;
    font-size: 14px;
}

.table tbody tr:hover {
    background-color: var(--color-gray-100);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 4px 8px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 4px;
    color: var(--color-white);
}

.badge-primary {
    background-color: var(--color-primary);
}

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

.badge-success {
    background-color: var(--color-success);
}

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

.badge-warning {
    background-color: var(--color-warning);
}

.badge-info {
    background-color: var(--color-info);
}

/* Alerts */
.alert {
    padding: 15px 20px;
    border-radius: 4px;
    margin-bottom: 20px;
    border-left: 4px solid;
}

.alert-success {
    background-color: #d4edda;
    border-color: var(--color-success);
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: var(--color-danger);
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    border-color: var(--color-warning);
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    border-color: var(--color-info);
    color: #0c5460;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--color-white);
    border-radius: 8px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--color-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--color-gray-500);
}

.modal-close:hover {
    color: var(--color-danger);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--color-gray-200);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

/* Footer */
.footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 20px 30px;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-left,
.footer-right {
    flex: 1;
}

.footer-left h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
}

.footer-left p {
    font-size: 13px;
    color: var(--color-light);
    margin-bottom: 5px;
}

.footer-right {
    text-align: right;
}

.footer-right p {
    font-size: 12px;
    color: var(--color-light);
}

.footer-right a {
    color: var(--color-lighter);
}

.footer-right a:hover {
    color: var(--color-white);
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    padding: 20px;
}

.login-card {
    background-color: var(--color-white);
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    max-width: 400px;
    width: 100%;
    padding: 40px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 10px;
}

.login-header p {
    color: var(--color-gray-500);
}

/* File Upload */
.file-upload-area {
    border: 2px dashed var(--color-gray-300);
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.file-upload-area:hover {
    border-color: var(--color-primary);
    background-color: var(--color-gray-100);
}

.file-upload-area.dragover {
    border-color: var(--color-primary);
    background-color: rgba(38, 12, 26, 0.05);
}

.file-upload-icon {
    font-size: 48px;
    color: var(--color-gray-400);
    margin-bottom: 15px;
}

.file-upload-text {
    color: var(--color-gray-500);
    margin-bottom: 10px;
}

.file-upload-hint {
    font-size: 12px;
    color: var(--color-gray-400);
}

/* Chat System */
.chat-container {
    display: flex;
    height: calc(100vh - 200px);
    background-color: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
}

.chat-sidebar {
    width: 300px;
    background-color: var(--color-gray-100);
    border-right: 1px solid var(--color-gray-200);
    display: flex;
    flex-direction: column;
}

.chat-sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--color-gray-200);
    background-color: var(--color-primary);
    color: var(--color-white);
}

.chat-sidebar-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.chat-users {
    flex: 1;
    overflow-y: auto;
}

.chat-user {
    padding: 15px 20px;
    border-bottom: 1px solid var(--color-gray-200);
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.chat-user:hover {
    background-color: var(--color-gray-200);
}

.chat-user.active {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.chat-user-name {
    font-weight: 500;
    margin-bottom: 5px;
}

.chat-user-role {
    font-size: 12px;
    color: var(--color-gray-500);
}

.chat-user.active .chat-user-role {
    color: var(--color-lighter);
}

.chat-main {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.chat-header {
    padding: 20px;
    border-bottom: 1px solid var(--color-gray-200);
    background-color: var(--color-gray-100);
}

.chat-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-primary);
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    background-color: var(--color-gray-50);
}

.chat-message {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
}

.chat-message.sent {
    align-items: flex-end;
}

.chat-message.received {
    align-items: flex-start;
}

.chat-message-content {
    max-width: 70%;
    padding: 10px 15px;
    border-radius: 8px;
    position: relative;
}

.chat-message.sent .chat-message-content {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.chat-message.received .chat-message-content {
    background-color: var(--color-white);
    color: var(--color-gray-800);
    border: 1px solid var(--color-gray-200);
}

.chat-message-time {
    font-size: 11px;
    color: var(--color-gray-500);
    margin-top: 5px;
}

.chat-input-area {
    padding: 20px;
    border-top: 1px solid var(--color-gray-200);
    background-color: var(--color-white);
}

.chat-input-area form {
    display: flex;
    gap: 10px;
}

.chat-input-area input {
    flex: 1;
}

/* Unread message indicator */
.unread-badge {
    background-color: var(--color-danger);
    color: var(--color-white);
    border-radius: 50%;
    padding: 2px 6px;
    font-size: 10px;
    margin-left: auto;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .header {
        padding: 15px;
    }
    
    .content {
        padding: 15px;
    }
    
    .chat-container {
        flex-direction: column;
        height: auto;
    }
    
    .chat-sidebar {
        width: 100%;
        max-height: 200px;
    }
    
    .chat-main {
        height: 400px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-right {
        text-align: center;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

/* Print Styles */
@media print {
    .sidebar,
    .header,
    .footer {
        display: none;
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .content {
        padding: 0;
    }
}