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

:root {
    --primary-color: #c64f0c;
    --bg-black: #000000;
    --bg-dark: #0a0a0a;
    --bg-darker: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --border-color: #2a2a2a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica', 'Arial', sans-serif;
    background-color: var(--bg-black);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Flash Messages */
.flash-messages {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.flash {
    padding: 12px 20px;
    margin-bottom: 10px;
    border-radius: 4px;
    background-color: var(--bg-darker);
    border-left: 4px solid var(--primary-color);
}

.flash-error {
    border-left-color: #dc2626;
}

/* Auth Pages */
.auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-box {
    width: 100%;
    max-width: 400px;
    padding: 40px;
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
}

.auth-box h1 {
    margin-bottom: 30px;
    text-align: center;
    color: var(--text-primary);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px;
    background-color: var(--bg-black);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-primary);
    font-size: 14px;
}

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

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    width: 100%;
    background-color: var(--primary-color);
    color: var(--text-primary);
}

.btn-primary:hover {
    background-color: #a84209;
}

.auth-link {
    margin-top: 20px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

.auth-link a {
    color: var(--primary-color);
    text-decoration: none;
}

.auth-link a:hover {
    text-decoration: underline;
}

/* Chat Container */
.chat-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--bg-dark);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h2 {
    font-size: 18px;
    margin-bottom: 15px;
}

.btn-new-chat {
    width: 100%;
    padding: 10px;
    background-color: var(--primary-color);
    color: var(--text-primary);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
}

.btn-new-chat:hover {
    background-color: #a84209;
}

.chat-list {
    flex: 1;
    overflow-y: auto;
    padding: 10px;
}

.chat-item {
    padding: 12px;
    margin-bottom: 5px;
    background-color: var(--bg-black);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.chat-item:hover {
    border-color: var(--primary-color);
}

.chat-item.active {
    background-color: var(--bg-darker);
    border-color: var(--primary-color);
}

.chat-item-title {
    font-size: 14px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chat-item-menu-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: 10px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 2px;
    opacity: 0;
    transition: opacity 0.2s;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-item:hover .chat-item-menu-btn {
    opacity: 1;
}

.chat-item-menu-btn:hover {
    color: var(--text-primary);
}

.chat-item-menu {
    position: absolute;
    top: 100%;
    right: 10px;
    background-color: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    display: none;
    flex-direction: column;
    min-width: 120px;
    z-index: 100;
    margin-top: 5px;
}

.chat-item-menu.active {
    display: flex;
}

.chat-menu-option {
    background: none;
    border: none;
    color: var(--text-primary);
    padding: 10px 15px;
    text-align: left;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.2s;
}

.chat-menu-option:hover {
    background-color: var(--bg-black);
}

.chat-menu-delete:hover {
    color: #dc2626;
}

.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.user-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
}

.btn-profile {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    padding: 0;
    text-align: left;
    transition: color 0.2s;
}

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

.btn-logout {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
}

.btn-logout:hover {
    text-decoration: underline;
}

/* Main Chat */
.main-chat {
    flex: 1;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-black);
}

.chat-header {
    padding: 20px 30px;
    border-bottom: 1px solid var(--border-color);
}

.chat-header h1 {
    font-size: 20px;
}

.messages-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
}

.welcome-message {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.welcome-message h2 {
    margin-bottom: 10px;
    color: var(--text-primary);
}

.message {
    margin-bottom: 20px;
    max-width: 800px;
    display: flex;
    gap: 0;
}

.message.user {
    margin-left: auto;
}

.message.assistant {
    margin-right: auto;
}

.message-border {
    width: 4px;
    background-color: var(--text-secondary);
    position: relative;
    transition: width 0.3s ease;
    flex-shrink: 0;
    display: flex;
    align-items: flex-start;
    padding-top: 20px;
}

.message.assistant .message-border {
    background-color: var(--primary-color);
}

.message:hover .message-border {
    width: 22px;
}

.message-actions {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.3s ease;
    align-items: center;
    top: 0;
}

.message:hover .message-actions {
    opacity: 1;
}

.message-regular-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
}

.message-action-btn {
    background: none;
    border: none;
    color: #ffffff;
    padding: 3px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.2s;
}

.message-action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.message-overflow-menu {
    position: relative;
}

.message-overflow-btn {
    background: none;
    border: none;
    color: #ffffff;
    padding: 3px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.2s;
}

.message-overflow-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.message-overflow-dropdown {
    position: absolute;
    left: 100%;
    top: 0;
    margin-left: 8px;
    background-color: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    display: none;
    flex-direction: column;
    min-width: 120px;
    z-index: 100;
}

.message-overflow-dropdown.active {
    display: flex;
}

.message-overflow-option {
    background: none;
    border: none;
    color: var(--text-primary);
    padding: 8px 12px;
    text-align: left;
    cursor: pointer;
    font-size: 13px;
    transition: background-color 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.message-overflow-option:hover {
    background-color: var(--bg-black);
}

.message-header {
    font-size: 11px;
    color: var(--text-secondary);
    margin-bottom: 2px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.message.assistant .message-header {
    color: var(--primary-color);
}

.message-content {
    padding: 3px 3px 3px 8px;
    background-color: rgba(255, 255, 255, 0.03);
    flex: 1;
}

.message-text p {
    margin-bottom: 10px;
}

.message-text p:last-child {
    margin-bottom: 0;
}

.message-text pre {
    background-color: var(--bg-black);
    padding: 12px;
    border-radius: 4px;
    overflow-x: auto;
    margin: 10px 0;
}

.message-text code {
    background-color: var(--bg-black);
    padding: 2px 6px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
}

.message-text pre code {
    padding: 0;
    background: none;
}

.message-text ul, .message-text ol {
    margin-left: 20px;
    margin-bottom: 10px;
}

.message-text a {
    color: var(--primary-color);
    text-decoration: none;
}

.message-text a:hover {
    text-decoration: underline;
}

.message-text blockquote {
    border-left: 3px solid var(--primary-color);
    padding-left: 15px;
    margin: 10px 0;
    color: var(--text-secondary);
}

/* Input Container */
.input-container {
    padding: 20px 30px;
    border-top: 1px solid var(--border-color);
}

.input-wrapper {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    background-color: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
}

.input-wrapper:focus-within {
    border-color: var(--primary-color);
}

#messageInput {
    width: 100%;
    min-height: 44px;
    max-height: 200px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 14px;
    resize: none;
    font-family: inherit;
    line-height: 1.5;
}

#messageInput:focus {
    outline: none;
}

.input-buttons {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 8px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    border: none;
    background-color: var(--bg-black);
    color: var(--text-secondary);
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    font-size: 20px;
}

.btn-icon:hover {
    background-color: var(--bg-dark);
    color: var(--text-primary);
}

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

.btn-send:hover {
    background-color: #a84209;
}

.btn-send:disabled {
    background-color: var(--bg-dark);
    color: var(--text-secondary);
    cursor: not-allowed;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
}

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

.modal-header h3 {
    font-size: 18px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modal-body {
    padding: 20px;
}

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

.confirm-modal {
    max-width: 400px;
}

.btn-secondary {
    background-color: var(--bg-darker);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-secondary:disabled:hover {
    background-color: var(--bg-darker);
}

.btn-danger {
    background-color: #dc2626;
    color: var(--text-primary);
}

.btn-danger:hover {
    background-color: #b91c1c;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-black);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-darker);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}