/* Dynamic Chatbot Test - Professional Design System */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* Colors */
    --color-primary: #007bff;
    --color-primary-dark: #0056b3;
    --color-primary-light: #b3d9ff;
    --color-success: #28a745;
    --color-success-dark: #1e7e34;
    --color-success-light: #d4edda;
    --color-warning: #ffc107;
    --color-warning-dark: #e0a800;
    --color-warning-light: #fff3cd;
    --color-danger: #dc3545;
    --color-danger-dark: #c82333;
    --color-danger-light: #f8d7da;
    --color-info: #17a2b8;
    --color-info-dark: #138496;
    --color-info-light: #d1ecf1;

    /* Grays */
    --color-white: #ffffff;
    --color-gray-50: #f8f9fa;
    --color-gray-100: #e9ecef;
    --color-gray-200: #dee2e6;
    --color-gray-300: #ced4da;
    --color-gray-400: #adb5bd;
    --color-gray-500: #6c757d;
    --color-gray-600: #495057;
    --color-gray-700: #343a40;
    --color-gray-800: #212529;
    --color-gray-900: #000000;

    /* Spacing */
    --spacing-1: 0.25rem;  /* 4px */
    --spacing-2: 0.5rem;   /* 8px */
    --spacing-3: 0.75rem;  /* 12px */
    --spacing-4: 1rem;     /* 16px */
    --spacing-5: 1.25rem;  /* 20px */
    --spacing-6: 1.5rem;   /* 24px */
    --spacing-8: 2rem;     /* 32px */
    --spacing-10: 2.5rem;  /* 40px */
    --spacing-12: 3rem;    /* 48px */
    --spacing-16: 4rem;    /* 64px */

    /* Typography */
    --font-family-base: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-family-mono: 'Consolas', 'Monaco', 'Courier New', monospace;
    --font-size-xs: 0.75rem;   /* 12px */
    --font-size-sm: 0.875rem;  /* 14px */
    --font-size-base: 1rem;    /* 16px */
    --font-size-lg: 1.125rem;  /* 18px */
    --font-size-xl: 1.25rem;   /* 20px */
    --font-size-2xl: 1.5rem;   /* 24px */
    --font-size-3xl: 1.875rem; /* 30px */
    --font-size-4xl: 2.25rem;  /* 36px */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;

    /* Borders & Radius */
    --border-radius-sm: 0.25rem;  /* 4px */
    --border-radius: 0.375rem;    /* 6px */
    --border-radius-md: 0.5rem;   /* 8px */
    --border-radius-lg: 0.75rem;  /* 12px */
    --border-radius-xl: 1rem;     /* 16px */
    --border-radius-full: 9999px;
    --border-width: 1px;
    --border-width-2: 2px;
    --border-width-4: 4px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* ===== GLOBAL STYLES ===== */
* {
    box-sizing: border-box;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-gray-700);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin: 0;
    padding: var(--spacing-6);
    min-height: 100vh;
}

/* ===== HEADER SECTION ===== */
.page-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
    color: var(--color-white);
}

.page-header h1 {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    margin: 0 0 var(--spacing-4) 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.page-header .subtitle {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-normal);
    margin: 0;
    opacity: 0.9;
}

/* ===== MAIN CONTAINER ===== */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
}

.container {
    background: var(--color-white);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    margin-bottom: var(--spacing-6);
}

/* ===== GRID SYSTEM ===== */
.grid {
    display: grid;
    gap: var(--spacing-6);
}

.grid-cols-1 {
    grid-template-columns: 1fr;
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

/* ===== CARD SECTIONS ===== */
.section {
    padding: var(--spacing-8);
    border-bottom: var(--border-width) solid var(--color-gray-100);
    position: relative;
}

.section:last-child {
    border-bottom: none;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-6);
    padding-bottom: var(--spacing-4);
    border-bottom: var(--border-width-2) solid var(--color-gray-100);
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-800);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.section-icon {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    font-size: var(--font-size-lg);
}

.section-icon.connection {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
}

.section-icon.chat {
    background: linear-gradient(135deg, var(--color-success), var(--color-success-dark));
    color: var(--color-white);
}

.section-icon.controls {
    background: linear-gradient(135deg, var(--color-info), var(--color-info-dark));
    color: var(--color-white);
}

.section-icon.discovery {
    background: linear-gradient(135deg, var(--color-warning), var(--color-warning-dark));
    color: var(--color-white);
}

.section-icon.logs {
    background: linear-gradient(135deg, var(--color-gray-600), var(--color-gray-700));
    color: var(--color-white);
}

/* ===== CONNECTION STATUS ===== */
.connection-panel {
    background: linear-gradient(135deg, var(--color-gray-50), var(--color-white));
    border: var(--border-width) solid var(--color-gray-200);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-6);
    margin-bottom: var(--spacing-6);
}

.status-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-5);
}

.status {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-5);
    border-radius: var(--border-radius-full);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    transition: all var(--transition-normal);
    border: var(--border-width-2) solid transparent;
}

.status.connected {
    background: var(--color-success-light);
    color: var(--color-success-dark);
    border-color: var(--color-success);
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.1);
}

.status.connected::before {
    content: "🟢";
    animation: pulse 2s infinite;
}

.status.disconnected {
    background: var(--color-danger-light);
    color: var(--color-danger-dark);
    border-color: var(--color-danger);
}

.status.disconnected::before {
    content: "🔴";
}

/* ===== FORM ELEMENTS ===== */
.form-group {
    margin-bottom: var(--spacing-5);
}

.form-row {
    display: flex;
    gap: var(--spacing-4);
    align-items: end;
}

.form-group label {
    display: block;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    margin-bottom: var(--spacing-2);
}

input, select, textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: var(--border-width-2) solid var(--color-gray-200);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-family: var(--font-family-base);
    transition: all var(--transition-fast);
    background: var(--color-white);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.server-url-input {
    width: 300px;
}

/* ===== BUTTON STYLES ===== */
.button-group {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-5);
    border: none;
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    font-family: var(--font-family-base);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    background: var(--color-primary);
    color: var(--color-white);
    border: var(--border-width) solid transparent;
}

button:hover:not(:disabled) {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

button:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

button:disabled {
    background: var(--color-gray-400);
    color: var(--color-gray-600);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Button Variants */
.btn-success {
    background: var(--color-success);
}

.btn-success:hover:not(:disabled) {
    background: var(--color-success-dark);
}

.btn-warning {
    background: var(--color-warning);
    color: var(--color-gray-800);
}

.btn-warning:hover:not(:disabled) {
    background: var(--color-warning-dark);
}

.btn-danger {
    background: var(--color-danger);
}

.btn-danger:hover:not(:disabled) {
    background: var(--color-danger-dark);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--color-primary);
    color: var(--color-white);
}

/* ===== CHAT INTERFACE ===== */
.chat-container {
    background: var(--color-gray-50);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-6);
}

.chat-messages {
    height: 400px;
    overflow-y: auto;
    padding: var(--spacing-4);
    background: var(--color-white);
    border: var(--border-width) solid var(--color-gray-200);
    border-radius: var(--border-radius-lg);
    margin-bottom: var(--spacing-4);
    scroll-behavior: smooth;
}

.chat-input-container {
    display: flex;
    gap: var(--spacing-3);
    align-items: stretch;
}

.chat-input {
    flex: 1;
    min-height: 44px;
}

/* ===== MESSAGE STYLES ===== */
.message {
    margin: var(--spacing-3) 0;
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--border-radius-lg);
    max-width: 80%;
    word-wrap: break-word;
    animation: messageSlideIn 0.3s ease-out;
}

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

.message.user {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: var(--color-white);
    margin-left: auto;
    border-bottom-right-radius: var(--border-radius-sm);
}

.message.bot {
    background: var(--color-gray-100);
    color: var(--color-gray-800);
    margin-right: auto;
    border-bottom-left-radius: var(--border-radius-sm);
    border: var(--border-width) solid var(--color-gray-200);
}

/* Streaming message styles */
.message.streaming {
    opacity: 0.95;
    border-left: 3px solid var(--color-primary);
    position: relative;
}

.stream-content {
    display: inline;
    word-wrap: break-word;
    white-space: pre-wrap;
    animation: fadeInText 0.1s ease-in;
}

@keyframes fadeInText {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.typing-indicator {
    display: inline-block;
    color: var(--color-primary);
    animation: blink 0.8s infinite;
    margin-left: 2px;
    font-weight: bold;
    font-size: var(--font-size-lg);
}

@keyframes blink {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.3;
    }
}

.message.system {
    background: var(--color-warning-light);
    color: var(--color-warning-dark);
    border: var(--border-width) solid var(--color-warning);
    text-align: center;
    margin: var(--spacing-4) auto;
    max-width: 90%;
    font-size: var(--font-size-sm);
}

/* ===== EVENT LOG ===== */
.log-container {
    background: var(--color-gray-900);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.log-header {
    background: var(--color-gray-800);
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: var(--border-width) solid var(--color-gray-700);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.log-title {
    color: var(--color-gray-300);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin: 0;
}

.log {
    height: 300px;
    overflow-y: auto;
    padding: var(--spacing-4);
    font-family: var(--font-family-mono);
    font-size: var(--font-size-xs);
    line-height: var(--line-height-relaxed);
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    scroll-behavior: smooth;
}

.log div {
    margin-bottom: var(--spacing-1);
    padding: var(--spacing-1) 0;
}

.log-timestamp {
    color: var(--color-gray-500);
    font-weight: var(--font-weight-normal);
}

.log-type {
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-1) var(--spacing-2);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
}

.log-info {
    background: var(--color-info);
    color: var(--color-white);
}

.log-success {
    background: var(--color-success);
    color: var(--color-white);
}

.log-error {
    background: var(--color-danger);
    color: var(--color-white);
}

.log-warning {
    background: var(--color-warning);
    color: var(--color-gray-800);
}

/* ===== ANIMATIONS ===== */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* ===== LOADING STATES ===== */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-4);
    }

    .page-header h1 {
        font-size: var(--font-size-3xl);
    }

    .section {
        padding: var(--spacing-6);
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-2);
    }

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

    .button-group {
        flex-direction: column;
    }

    .server-url-input {
        width: 100%;
    }

    .chat-input-container {
        flex-direction: column;
    }

    .grid-cols-2, .grid-cols-3 {
        grid-template-columns: 1fr;
    }

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

@media (min-width: 769px) and (max-width: 1024px) {
    .grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1025px) {
    .container {
        margin-bottom: var(--spacing-8);
    }

    .section {
        padding: var(--spacing-10);
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.text-sm { font-size: var(--font-size-sm); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }

.hidden { display: none; }
.flex { display: flex; }
.grid { display: grid; }

.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }

.rounded { border-radius: var(--border-radius); }
.rounded-lg { border-radius: var(--border-radius-lg); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow); }
.shadow-lg { box-shadow: var(--shadow-lg); }