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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* Navigation */
.main-nav {
    background-color: #fff;
    border-bottom: 1px solid #e5e5e5;
    padding: 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left .site-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
    text-decoration: none;
}

.nav-left .site-title:hover {
    color: #10a37f;
}

.user-menu {
    position: relative;
}

.user-menu-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: none;
    border: 1px solid #e5e5e5;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.95rem;
}

.user-menu-button:hover {
    background-color: #f5f5f5;
}

.profile-photo-small {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
}

.profile-initials-small {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: #667eea;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
}

.dropdown-arrow {
    font-size: 0.7rem;
}

.user-menu-dropdown {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    margin-top: 0.5rem;
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    min-width: 200px;
    z-index: 1001;
}

.user-menu-dropdown.active {
    display: block;
}

.user-menu-dropdown a {
    display: block;
    padding: 0.75rem 1rem;
    color: #333;
    text-decoration: none;
    border-bottom: 1px solid #f0f0f0;
}

.user-menu-dropdown a:last-child {
    border-bottom: none;
}

.user-menu-dropdown a:hover {
    background-color: #f5f5f5;
}

.submenu {
    position: relative;
}

.submenu-toggle {
    display: flex;
    justify-content: space-between;
}

.submenu-content {
    display: none;
    background-color: #fafafa;
}

.submenu:hover .submenu-content {
    display: block;
}

.submenu-content a {
    padding-left: 2rem;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    min-height: calc(100vh - 120px);
}

/* Flash Messages */
.flash-message {
    padding: 1rem;
    margin: 1rem auto;
    max-width: 1200px;
    border-radius: 0.5rem;
    font-weight: 500;
}

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

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

.flash-info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
}

.login-box {
    background: #fff;
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.login-box h1 {
    text-align: center;
    color: #667eea;
    margin-bottom: 0.5rem;
    font-size: 2rem;
}

.login-box h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: #555;
    font-size: 1.3rem;
}

.login-form .form-group {
    margin-bottom: 1.25rem;
}

.login-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

.login-form input[type="text"],
.login-form input[type="email"],
.login-form input[type="password"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.login-form input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.login-links {
    text-align: center;
    margin-top: 1.5rem;
}

.login-links a {
    color: #667eea;
    text-decoration: none;
}

.login-links a:hover {
    text-decoration: underline;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
}

.btn-primary {
    background-color: #10a37f;
    color: #fff;
}

.btn-primary:hover {
    background-color: #0d8b6a;
}

.btn-secondary {
    background-color: #6c757d;
    color: #fff;
}

.btn-secondary:hover {
    background-color: #5a6268;
}

.btn-block {
    width: 100%;
}

.btn-small {
    padding: 0.4rem 0.8rem;
    font-size: 0.875rem;
}

/* Chat Interface */
.chat-container {
    max-width: 900px;
    margin: 0 auto;
    background: #fff;
    border-radius: 1rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    min-height: 600px;
    display: flex;
    flex-direction: column;
}

.chat-header {
    padding: 2rem;
    border-bottom: 1px solid #e5e5e5;
}

.chat-header h1 {
    font-size: 2rem;
    color: #333;
}

.chat-messages {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    min-height: 400px;
}

.welcome-message {
    text-align: center;
    color: #888;
    padding: 3rem 1rem;
}

/* Chat Messages */
.chat-message {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    animation: fadeIn 0.3s ease-in;
}

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

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

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

.message-content {
    max-width: 80%;
    padding: 1rem 1.25rem;
    border-radius: 1.25rem;
    word-wrap: break-word;
    white-space: pre-wrap;
    line-height: 1.5;
}

.chat-message-user .message-content {
    background-color: #10a37f;
    color: white;
    border-bottom-right-radius: 0.25rem;
}

.chat-message-assistant .message-content {
    background-color: #f7f7f8;
    color: #333;
    border-bottom-left-radius: 0.25rem;
}

.message-streaming {
    margin-top: 0.5rem;
    color: #10a37f;
    font-size: 1.5rem;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

.chat-input-container {
    padding: 1.5rem;
    border-top: 1px solid #e5e5e5;
}

.chat-form {
    display: flex;
    gap: 0.75rem;
}

.chat-input {
    flex: 1;
    padding: 0.875rem;
    border: 1px solid #ddd;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.chat-input:focus {
    outline: none;
    border-color: #10a37f;
    box-shadow: 0 0 0 3px rgba(16, 163, 127, 0.1);
}

.btn-submit {
    padding: 0.875rem 1.5rem;
}

.btn-voice {
    padding: 0.875rem 1.5rem;
    white-space: nowrap;
}

.btn-interrupt {
    background-color: #e74c3c;
    color: white;
}

.btn-interrupt:hover {
    background-color: #c0392b;
}

/* Profile Page */
.profile-container {
    max-width: 800px;
    margin: 0 auto;
}

.profile-section {
    background: #fff;
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.profile-section h2 {
    margin-bottom: 1.5rem;
    color: #333;
}

.profile-photo-section {
    display: flex;
    gap: 2rem;
    align-items: start;
}

.profile-photo-large {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
}

.profile-initials-large {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background-color: #667eea;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 48px;
}

.photo-upload-form {
    flex: 1;
}

.profile-form .form-group {
    margin-bottom: 1.25rem;
}

.profile-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

.profile-form input[type="text"],
.profile-form input[type="email"],
.profile-form input[type="password"],
.profile-form input[type="file"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.profile-form input:focus {
    outline: none;
    border-color: #10a37f;
    box-shadow: 0 0 0 3px rgba(16, 163, 127, 0.1);
}

/* Admin Pages */
.admin-container {
    background: #fff;
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e5e5e5;
}

.admin-header h1 {
    font-size: 2rem;
    color: #333;
}

.admin-form .form-group {
    margin-bottom: 1.25rem;
}

.admin-form label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

.admin-form input[type="text"],
.admin-form input[type="email"],
.admin-form input[type="password"] {
    width: 100%;
    max-width: 500px;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 0.5rem;
    font-size: 1rem;
}

.admin-form input:focus {
    outline: none;
    border-color: #10a37f;
    box-shadow: 0 0 0 3px rgba(16, 163, 127, 0.1);
}

.form-help {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: #888;
}

/* Data Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.data-table th,
.data-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #e5e5e5;
}

.data-table th {
    background-color: #f8f9fa;
    font-weight: 600;
    color: #555;
}

.data-table tr:hover {
    background-color: #f8f9fa;
}

/* Footer */
.main-footer {
    background-color: #fff;
    border-top: 1px solid #e5e5e5;
    padding: 1.5rem 2rem;
    text-align: center;
    color: #888;
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-container {
        padding: 1rem;
    }

    .main-content {
        padding: 1rem;
    }

    .chat-form {
        flex-direction: column;
    }

    .profile-photo-section {
        flex-direction: column;
    }

    .admin-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}