:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg-dark: #0f172a;
    --bg-panel: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --user-msg-bg: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --sys-msg-bg: rgba(30, 41, 59, 0.8);
    --accent: #10b981;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-dark);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    overflow: hidden;
}

#app {
    width: 100%;
    max-width: 1000px;
    height: 100vh;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
}

@media (min-width: 768px) {
    #app {
        height: 90vh;
    }
}

.glass-panel {
    background: var(--bg-panel);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: var(--glass-shadow);
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
}

/* Views */
.view {
    display: none;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.view.active {
    display: flex;
    opacity: 1;
}

/* Auth View */
#auth-view {
    max-width: 400px;
    margin: auto;
    height: auto;
    padding: 40px;
    align-items: center;
}

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

.logo {
    width: 64px;
    height: 64px;
    background: var(--user-msg-bg);
    border-radius: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 28px;
    margin: 0 auto 16px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.auth-header h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
}

.auth-header p {
    color: var(--text-muted);
    font-size: 14px;
}

#login-form {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.input-group {
    position: relative;
    width: 100%;
}

.input-group i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.input-group input {
    width: 100%;
    padding: 14px 16px 14px 44px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: white;
    font-family: inherit;
    font-size: 15px;
    outline: none;
    transition: all 0.3s ease;
}

.input-group input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

.btn-primary {
    background: var(--user-msg-bg);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 12px;
    font-family: inherit;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    transition: transform 0.2s, box-shadow 0.2s;
    margin-top: 8px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

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

.error-text {
    color: #ef4444;
    font-size: 13px;
    text-align: center;
    margin-top: 8px;
}

.hidden {
    display: none !important;
}

/* Chat View */
.chat-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(15, 23, 42, 0.3);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-small {
    width: 40px;
    height: 40px;
    background: var(--user-msg-bg);
    border-radius: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 18px;
}

.chat-header h2 {
    font-size: 18px;
    font-weight: 600;
}

.status-indicator {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

.dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
    display: inline-block;
    box-shadow: 0 0 8px var(--accent);
}

.header-right {
    display: flex;
    gap: 12px;
}

.icon-btn {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.icon-btn.active {
    color: var(--primary);
    border-color: rgba(99, 102, 241, 0.3);
    background: rgba(99, 102, 241, 0.1);
}

.chat-history {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    scroll-behavior: smooth;
}

.chat-history::-webkit-scrollbar {
    width: 6px;
}
.chat-history::-webkit-scrollbar-track {
    background: transparent;
}
.chat-history::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.message {
    display: flex;
    gap: 12px;
    max-width: 85%;
}

.message.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.message.system {
    align-self: flex-start;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 14px;
    flex-shrink: 0;
}

.message.system .avatar {
    background: rgba(30, 41, 59, 1);
    border: 1px solid var(--glass-border);
}

.message.user .avatar {
    background: var(--user-msg-bg);
}

.bubble {
    padding: 14px 18px;
    border-radius: 18px;
    font-size: 15px;
    line-height: 1.5;
    position: relative;
    word-break: break-word;
}

.bubble pre {
    background: rgba(0,0,0,0.2);
    padding: 10px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 10px 0;
}

.bubble code {
    font-family: monospace;
}

.message.user .bubble {
    background: var(--user-msg-bg);
    border-top-right-radius: 4px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.2);
}

.message.system .bubble {
    background: var(--sys-msg-bg);
    border: 1px solid var(--glass-border);
    border-top-left-radius: 4px;
}

.suggestions-label {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 12px;
    margin-bottom: 8px;
}

.suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.suggestion-chip {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 6px 12px;
    border-radius: 16px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}

.suggestion-chip:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: rgba(99, 102, 241, 0.4);
    transform: translateY(-1px);
}

.chat-input-area {
    padding: 20px 24px;
    border-top: 1px solid var(--glass-border);
    background: rgba(15, 23, 42, 0.3);
}

.input-wrapper {
    display: flex;
    align-items: center;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 6px 12px;
    transition: all 0.3s;
}

.input-wrapper:focus-within {
    border-color: rgba(99, 102, 241, 0.5);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.1);
}

#message-input {
    flex: 1;
    background: transparent;
    border: none;
    color: white;
    padding: 10px 12px;
    font-family: inherit;
    font-size: 15px;
    outline: none;
}

#message-input::placeholder {
    color: var(--text-muted);
}

.mic-btn {
    border: none;
    font-size: 16px;
    color: var(--text-muted);
}

.mic-btn:hover, .mic-btn.recording {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.mic-btn.recording {
    animation: pulse 1.5s infinite;
}

.send-btn {
    border: none;
    background: var(--primary);
    color: white;
    width: 36px;
    height: 36px;
}

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

.send-btn:disabled {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    cursor: not-allowed;
}

/* Typing Indicator */
.typing-indicator {
    padding: 0 24px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 13px;
}

.dot-typing {
    position: relative;
    left: -9999px;
    width: 6px;
    height: 6px;
    border-radius: 5px;
    background-color: var(--primary);
    color: var(--primary);
    box-shadow: 9984px 0 0 0 var(--primary), 9999px 0 0 0 var(--primary), 10014px 0 0 0 var(--primary);
    animation: dot-typing 1.5s infinite linear;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
    70% { box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

@keyframes dot-typing {
    0% { box-shadow: 9984px 0 0 0 var(--primary), 9999px 0 0 0 var(--primary), 10014px 0 0 0 var(--primary); }
    16.667% { box-shadow: 9984px -6px 0 0 var(--primary), 9999px 0 0 0 var(--primary), 10014px 0 0 0 var(--primary); }
    33.333% { box-shadow: 9984px 0 0 0 var(--primary), 9999px -6px 0 0 var(--primary), 10014px 0 0 0 var(--primary); }
    50% { box-shadow: 9984px 0 0 0 var(--primary), 9999px 0 0 0 var(--primary), 10014px -6px 0 0 var(--primary); }
    66.667% { box-shadow: 9984px 0 0 0 var(--primary), 9999px 0 0 0 var(--primary), 10014px 0 0 0 var(--primary); }
    100% { box-shadow: 9984px 0 0 0 var(--primary), 9999px 0 0 0 var(--primary), 10014px 0 0 0 var(--primary); }
}

/* Markdown parsing basic styles */
.bubble h1, .bubble h2, .bubble h3 { margin: 10px 0 5px; font-size: 1.1em; }
.bubble p { margin-bottom: 8px; }
.bubble p:last-child { margin-bottom: 0; }
.bubble ul, .bubble ol { margin-left: 20px; margin-bottom: 8px; }
.bubble strong { font-weight: 600; color: #fff; }