/* Base Styles */
:root {
    --primary-color: #4361ee;
    --primary-light: #e0e7ff;
    --secondary-color: #3f37c9;
    --accent-color: #4895ef;
    --dark-color: #1e1e1e;
    --light-color: #f8f9fa;
    --gray-color: #6c757d;
    --success-color: #4cc9f0;
    --success-green: #10b981;
    --error-color: #f72585;
    --border-radius: 12px;
    --box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: #f5f5f7;
    color: var(--dark-color);
    line-height: 1.6;
}

/* App Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Side Navigation */
.side-nav {
    width: 280px;
    background-color: white;
    display: flex;
    flex-direction: column;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    z-index: 100;
}

.nav-header {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.logo span {
    font-size: 26px;
    color: var(--primary-color);
}

.logo h1 {
    font-size: 18px;
    font-weight: 600;
}

.logo h1 a {
    color: inherit;
    text-decoration: none;
}

.nav-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--gray-color);
}

.nav-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.user-info {
    display: flex;
    flex-direction: column;
}

.username {
    font-weight: 600;
    font-size: 12px;
}

.user-status {
    font-size: 10px;
    color: var(--gray-color);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 30px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--gray-color);
    font-weight: 500;
    transition: var(--transition);
}

.nav-item:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.nav-item.active {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.nav-item span:first-child {
    font-size: 20px;
}

.app-links {
    margin-bottom: 30px;
}

.app-links h3 {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--gray-color);
    margin-bottom: 15px;
    letter-spacing: 0.5px;
}

.app-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--gray-color);
    font-weight: 500;
    transition: var(--transition);
    width: 100%;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
}

.app-link:hover {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.app-link span:first-child {
    font-size: 20px;
}

.nav-footer {
    margin-top: auto;
    padding: 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 15px;
    border-radius: var(--border-radius);
    text-decoration: none;
    color: var(--gray-color);
    font-weight: 500;
    transition: var(--transition);
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
}

.logout-btn:hover {
    background-color: rgba(247, 37, 133, 0.1);
    color: var(--error-color);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 30px;
    overflow-y: auto;
}

/* Chat Container */
.chat-container {
    max-width: 900px;
    margin: 0 auto;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 60px);
}

.chat-header {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.chat-header h2 {
    font-size: 16px;
    font-weight: 600;
}

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

.chat-actions-btn {
    padding: 10px 20px;
    background-color: var(--primary-light);
    color: black;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: var(--transition);
}
.action-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--gray-color);
    cursor: pointer;
    transition: var(--transition);
}

.action-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.message {
    max-width: 80%;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    line-height: 1.5;
    position: relative;
    animation: fadeIn 0.3s ease;
}

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

.incoming {
    align-self: flex-start;
    background-color: #f0f2f5;
    color: var(--dark-color);
    border-bottom-left-radius: 4px;
}

.outgoing {
    align-self: flex-end;
    background-color: var(--primary-color);
    color: white;
    border-bottom-right-radius: 4px;
}

.error {
    align-self: center;
    background-color: var(--error-color);
    color: white;
    text-align: center;
    max-width: 90%;
}

.chat-input-container {
    padding: 15px 20px;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.input-container {
    width: 100%;
}

.message-input {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    background-color: #f5f5f7;
    border-radius: var(--border-radius);
    padding: 10px 15px;
}

.message-input textarea {
    flex: 1;
    border: none;
    background: none;
    resize: none;
    max-height: 150px;
    font-family: inherit;
    font-size: 13px;
    padding: 8px 0;
    outline: none;
}

.send-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color);
    border: none;
    color: white;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

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

.send-btn:disabled {
    background-color: var(--gray-color);
    cursor: not-allowed;
}

/* Alerts */
.alert {
    padding: 12px 16px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    font-size: 12px;
}

/* File Upload Form Styles */
.upload-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 10px;
}

.file-input-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}

.file-input-wrapper label {
    font-weight: 500;
    color: var(--primary-color);
}

.upload-submit-btn {
    padding: 8px 16px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: var(--transition);
}

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

.upload-submit-btn span {
    font-size: 16px;
}

/* Link Styles */
.message a {
    text-decoration: underline;
    word-break: break-all;
}

.message incoming a {
    color: var(--primary-color);
}

.message incoming a:hover {
    color: var(--secondary-color);
}

.message outgoing a {
    color: whaite;
}

.message outgoing a:hover {
    color: whaite;
}

.alert-error {
    background-color: #ffebee;
    color: #c62828;
}

.alert-success {
    background-color: #e8f5e9;
    color: #2e7d32;
}

.alert-info {
    background-color: #e3f2fd;
    color: #1565c0;
}

.alert-warning {
    background-color: #fff8e1;
    color: #f57f17;
}

/* Pagination */
.pagination {
    margin-top: 30px;
    text-align: center;
}

.page-links {
    display: inline-block;
    background-color: white;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.page-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.page-current {
    margin: 0 10px;
    color: var(--gray-color);
}

/* Responsive Design */
@media (max-width: 650px) {
    .side-nav {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-100%);
    }
    
    .side-nav.active {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 20px;
    }
    
    .nav-toggle {
        display: block;
    }
    
    .chat-container {
        height: calc(100vh - 40px);
    }
}

@media (max-width: 768px) {
    .message {
        max-width: 90%;
    }
}

/* Login Form Styles */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group, .mb-3 {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form-group, .mb-3 label {
    color: var(--dark-color);
    font-weight: 500;
}

.form-group, .mb-3 input {
    padding: 10px 15px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 13px;
    transition: var(--transition);
}

.form-group, .mb-3 input:focus {
    border-color: var(--primary-color);
    outline: none;
}

.form-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
}

.incoming-btn {
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: var(--transition);
}

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

.incoming-btn span {
    font-size: 16px;
}

.register-link {
    transition: var(--transition);
    text-decoration: none;
    color: white;
    word-break: break-all;
}

.register-link:hover {
    text-decoration: underline;
    color: white;
}

/* Style for incoming message container */
.message.incoming {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px 16px;
    background-color: #f0f2f5;
    border-radius: var(--border-radius);
    align-self: flex-start;
}

/* Container for buttons in incoming message */
.message-buttons {
    display: flex;
    gap: 10px;
    margin-top: 8px;
    flex-wrap: wrap;
}

/* Style for buttons in incoming messages */
.incoming-btn {
    padding: 8px 16px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    transition: var(--transition);
    flex-grow: 1;
    text-align: center;
    min-width: 80px;
}

.incoming-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

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

/* Specific style for danger button */
.incoming-btn[data-secondary="danger"] {
    background-color: var(--error-color);
}

.incoming-btn[data-sedondary="danger"]:hover {
    background-color: var(--error-color);
}

/* Specific style for submit button */
.incoming-btn[data-secondary="submit"] {
    background-color: var(--success-green);
}

.incoming-btn[data-sedondary="submit"]:hover {
    background-color: var(--success-green);
}

.error-msg {
    padding: 8px 16px;
    color: white;
    border-radius: var(--border-radius);
    background-color: var(--error-color);
}

.incoming li {
    margin-left: 20px;
}

blockquote {
    padding: 8px 16px;
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
    background-color: var(--light-color);
    border-left: 2.5px solid gray;
    padding-left: 5px;
}