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

:root {
    --primary-color: #00bfff;
    --primary-dark: #0099cc;
    --primary-light: #1a3a52;
    --success-color: #00ff88;
    --error-color: #ff4444;
    --warning-color: #ffaa00;
    --info-color: #00bfff;
    --bg-dark: #0d1b2a;
    --bg-darker: #050f18;
    --bg-white: #f0f0f0;
    --border-color: #1e4d6b;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0a0;
    --shadow-sm: 0 2px 8px rgba(0, 191, 255, 0.15);
    --shadow-md: 0 8px 24px rgba(0, 191, 255, 0.25);
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #0d1b2a 0%, #1a3a52 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 1000px;
    margin: 0 auto;
    width: 100%;
    background: var(--bg-light);
}

.header {
    background: rgba(13, 27, 42, 0.95);
    padding: 24px;
    border-bottom: 2px solid var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 191, 255, 0.2);
    text-align: center;
    backdrop-filter: blur(10px);
}

.branding {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-color);
    letter-spacing: 1px;
    margin-bottom: 12px;
    text-transform: uppercase;
    opacity: 0.9;
}

.brand-logo {
    display: block;
    height: 60px;
    width: auto;
    margin: 0 auto 14px;
}

.header h1 {
    font-size: 28px;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: 0.5px;
}

.header .branding {
    font-size: 11px;
    color: var(--primary-color);
    letter-spacing: 2px;
    font-weight: 600;
    margin-bottom: 12px;
}

.header p {
    color: var(--text-secondary);
    font-size: 13px;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 16px;
    overflow: hidden;
}

.chat-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    background: rgba(26, 58, 82, 0.8);
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
    border: 1px solid rgba(0, 191, 255, 0.3);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: #cbd5e1;
}

.message {
    display: flex;
    flex-direction: column;
    animation: slideIn 0.3s ease-out;
}

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

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

.message.user .message-content {
    background: var(--primary-color);
    color: white;
    padding: 12px 16px;
    border-radius: 12px 12px 4px 12px;
    max-width: 70%;
    word-wrap: break-word;
}

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

.message.system .message-content {
    background: var(--bg-light);
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: 12px 12px 12px 4px;
    border-left: 4px solid var(--info-color);
    max-width: 85%;
}

.message.system.success .message-content {
    border-left-color: var(--success-color);
    background: #f0fdf4;
}

.message.system.error .message-content {
    border-left-color: var(--error-color);
    background: #fef2f2;
    color: var(--error-color);
}

.message.system.warning .message-content {
    border-left-color: var(--warning-color);
    background: #fffbeb;
}

.message-content {
    font-size: 14px;
    line-height: 1.5;
}

.message-content a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

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

.message-content ul {
    margin: 8px 0;
    padding-left: 20px;
}

.message-time {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
    padding: 0 4px;
}

.progress-section {
    padding: 12px 20px;
    background: rgba(13, 27, 42, 0.8);
    border-top: 1px solid rgba(0, 191, 255, 0.3);
}

.progress-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.progress-bar {
    width: 100%;
    height: 6px;
    background: rgba(0, 191, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--success-color));
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 3px;
}

.input-area {
    padding: 16px;
    background: rgba(26, 58, 82, 0.8);
    border-top: 1px solid rgba(0, 191, 255, 0.2);
}

.input-group {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.company-input {
    flex: 1;
    padding: 12px 16px;
    border: 1px solid rgba(0, 191, 255, 0.4);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: all 0.2s ease;
    background: rgba(13, 27, 42, 0.6);
    color: var(--text-primary);
}

.company-input::placeholder {
    color: var(--text-secondary);
}

.company-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 191, 255, 0.2);
    background: rgba(13, 27, 42, 0.8);
}

.company-input:disabled {
    background: rgba(13, 27, 42, 0.4);
    color: var(--text-secondary);
    cursor: not-allowed;
}

.send-button {
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: #000;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    box-shadow: 0 4px 12px rgba(0, 191, 255, 0.3);
}

.send-button:hover:not(:disabled) {
    box-shadow: 0 8px 20px rgba(0, 191, 255, 0.5);
    transform: translateY(-2px);
}

.send-button:disabled {
    background: rgba(160, 160, 160, 0.3);
    cursor: not-allowed;
    opacity: 0.5;
}

.input-hint {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 0 4px;
}

.footer {
    background: rgba(13, 27, 42, 0.95);
    padding: 16px;
    text-align: center;
    border-top: 1px solid rgba(0, 191, 255, 0.2);
    font-size: 12px;
    color: var(--text-secondary);
}

/* Responsive design */
@media (max-width: 640px) {
    .container {
        max-width: 100%;
        height: 100dvh;
    }

    .header {
        padding: 16px;
    }

    .header h1 {
        font-size: 22px;
    }

    .chat-messages {
        padding: 12px;
    }

    .main-content {
        padding: 8px;
    }

    .message.user .message-content {
        max-width: 85%;
    }

    .message.system .message-content {
        max-width: 95%;
    }

    .input-area {
        padding: 12px;
    }

    .input-group {
        gap: 6px;
    }

    .send-button {
        padding: 10px 16px;
        font-size: 13px;
    }

    .company-input {
        padding: 10px 12px;
        font-size: 13px;
    }
}

/* Print styles */
@media print {
    body {
        background: white;
    }

    .header,
    .input-area,
    .footer {
        display: none;
    }
}