:root {
    /* Modern Color Palette with Gradients */
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #14b8a6;
    --highlight-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;

    /* Dark Theme with Depth */
    --dark-bg: #000000; /* Deep black */
    --dark-surface: #101014;
    --card-bg: rgba(10, 10, 10, 0.92);
    --container-bg: rgba(0, 0, 0, 0.92);
    --modal-bg: rgba(5, 5, 5, 0.98);

    /* Text Colors with Hierarchy */
    --light-text: #f8fafc;
    --text-primary: #e0e7ef;
    --text-secondary: #7e8597;
    --text-muted: #4b5563;

    /* Glass Morphism Effects */
    --glass-bg: rgba(20, 20, 20, 0.25);
    --glass-border: rgba(255, 255, 255, 0.08);

    /* Advanced Borders */
    --border-color-soft: rgba(255, 255, 255, 0.06);
    --border-color-primary: rgba(99, 102, 241, 0.4);
    --border-gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));

    /* Input Styles */
    --input-bg: rgba(30, 30, 30, 0.7);
    --input-focus-bg: rgba(40, 40, 40, 0.9);
    --button-subtle-bg: rgba(50, 50, 50, 0.6);

    /* Enhanced Shadows */
    --shadow-primary-glow: 0 0 40px #6366f1cc;
    --shadow-secondary-glow: 0 0 40px #8b5cf6cc;
    --shadow-dark-soft: 0 4px 24px #000a;
    --shadow-dark-medium: 0 8px 32px #000c;
    --shadow-elevation-1: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-elevation-2: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-elevation-3: 0 8px 24px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-accent: linear-gradient(135deg, #8b5cf6 0%, #14b8a6 100%);
    --gradient-radial: radial-gradient(circle at 50% 50%, var(--primary-color), transparent);
    --gradient-mesh: radial-gradient(at 40% 20%, #6366f133 0px, transparent 50%),
                     radial-gradient(at 80% 0%, #14b8a633 0px, transparent 50%),
                     radial-gradient(at 0% 50%, #f59e0b22 0px, transparent 50%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background-color: var(--dark-bg);
    color: var(--light-text);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
    line-height: 1.6;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Selection Styling */
::selection {
    background: var(--primary-color);
    color: var(--light-text);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--dark-surface);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
}

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

/* Enhanced Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow-y: auto;
    animation: modalFadeIn 0.3s ease-out;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
    }
    to {
        opacity: 1;
        backdrop-filter: blur(20px);
    }
}

.modal-content {
    position: relative;
    background: var(--modal-bg);
    border: 2px solid var(--border-color-primary);
    box-shadow: 0 8px 40px #000c, 0 0 0 2px var(--primary-color);
    margin: 0;
    padding: 3rem;
    width: 95%;
    max-width: 700px;
    border-radius: 24px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease-out;
    background-image: var(--gradient-mesh);
}

@keyframes modalSlideIn {
    from {
        transform: translateY(100px) scale(0.9);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.modal-content::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    background: var(--gradient-primary);
    border-radius: 24px;
    opacity: 0.3;
    z-index: -1;
    animation: borderGlow 3s ease-in-out infinite;
}

@keyframes borderGlow {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.6;
    }
}

.modal-content h2 {
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.config-warning {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(239, 68, 68, 0.1));
    border: 1px solid rgba(245, 158, 11, 0.3);
    border-radius: 12px;
    padding: 1.25rem;
    margin-bottom: 2rem;
    color: var(--highlight-color);
    text-align: center;
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.config-warning::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(245, 158, 11, 0.2), transparent);
    animation: warningShine 3s infinite;
}

@keyframes warningShine {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

.config-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.75rem;
}

.config-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.config-group label::before {
    content: '';
    width: 3px;
    height: 16px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.config-group input {
    padding: 1rem 1.25rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color-soft);
    border-radius: 12px;
    color: var(--light-text);
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
}

.config-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1), var(--shadow-primary-glow);
    background: var(--input-focus-bg);
    transform: translateY(-2px);
}

.config-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2.5rem;
}

.save-config-btn, .cancel-config-btn {
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.save-config-btn {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-elevation-2), var(--shadow-primary-glow);
}

.save-config-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.save-config-btn:hover::before {
    width: 300px;
    height: 300px;
}

.save-config-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-elevation-3), var(--shadow-primary-glow);
}

.cancel-config-btn {
    background: var(--button-subtle-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color-soft);
    backdrop-filter: blur(10px);
}

.cancel-config-btn:hover {
    background: var(--input-focus-bg);
    transform: translateY(-2px);
    border-color: var(--text-muted);
}

.config-btn {
    position: fixed;
    top: 2rem;
    right: 2rem;
    padding: 0.75rem 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--text-primary);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 100;
}

.config-btn::before {
    content: '⚙️';
    font-size: 1.1rem;
    animation: spin 3s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.config-btn:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-elevation-3), var(--shadow-primary-glow);
}

/* Enhanced Animated Background */
.animated-background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background: var(--dark-bg);
}

.animated-background::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: var(--gradient-mesh);
    animation: meshMove 20s ease-in-out infinite;
    opacity: 0.4;
}

.animated-background::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, var(--primary-color) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, var(--secondary-color) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, var(--accent-color) 0%, transparent 50%);
    opacity: 0.15;
    animation: pulseGlow 8s ease-in-out infinite;
}

@keyframes meshMove {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    25% {
        transform: translate(-50px, -50px) rotate(90deg);
    }
    50% {
        transform: translate(50px, -100px) rotate(180deg);
    }
    75% {
        transform: translate(-100px, 50px) rotate(270deg);
    }
}

@keyframes pulseGlow {
    0%, 100% {
        opacity: 0.15;
        transform: scale(1);
    }
    50% {
        opacity: 0.25;
        transform: scale(1.1);
    }
}

/* Particle System */
.particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}

/* Enhanced Container */
.container {
    width: 90%;
    max-width: 1400px;
    margin: 2rem auto;
    padding: 3rem;
    background: var(--container-bg);
    border: 1.5px solid var(--border-color-primary);
    box-shadow: 0 8px 40px #000c, 0 0 0 2px var(--primary-color);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-radius: 24px;
    position: relative;
    overflow: hidden;
}

.container::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: var(--gradient-mesh);
    opacity: 0.03;
    animation: meshMove 30s ease-in-out infinite reverse;
}

/* Enhanced Title */
.main-title {
    text-align: center;
    font-size: 4.5rem;
    font-weight: 800;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, 
        var(--primary-color) 0%, 
        var(--secondary-color) 25%, 
        var(--accent-color) 50%, 
        var(--primary-color) 75%, 
        var(--secondary-color) 100%);
    background-size: 300% 300%;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradientShift 8s ease-in-out infinite, floatText 6s ease-in-out infinite;
    letter-spacing: -0.02em;
    position: relative;
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.main-title::after {
    content: 'ECP360 AI Hub';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    filter: blur(40px);
    opacity: 0.5;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Enhanced Category Toggle */
.category-toggle {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 3rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 0.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-elevation-1);
    border: 1px solid var(--glass-border);
    position: relative;
}

.category-toggle::before {
    content: '';
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    height: calc(100% - 1rem);
    width: calc(50% - 0.75rem);
    background: var(--gradient-primary);
    border-radius: 12px;
    transition: var(--transition-smooth);
    opacity: 0.1;
}

.category-toggle.media-active::before {
    left: calc(50% + 0.25rem);
}

.tab-btn {
    flex: 1;
    padding: 1rem 2rem;
    background: transparent;
    border: none;
    border-radius: 12px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    z-index: 2;
}

.tab-btn.active {
    color: var(--text-primary);
}

.tab-btn:hover:not(.active) {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

/* Enhanced Category Sections */
.category-section {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    display: none;
    animation: sectionFadeIn 0.5s ease-out forwards;
}

.category-section.active {
    display: block;
}

@keyframes sectionFadeIn {
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.category-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    display: inline-block;
}

.category-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left;
    animation: lineExpand 0.8s ease-out 0.3s forwards;
}

@keyframes lineExpand {
    to {
        transform: scaleX(1);
    }
}

/* Enhanced Agent Buttons Grid */
.agent-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.agent-btn {
    padding: 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1.5px solid var(--border-color-primary);
    box-shadow: 0 4px 32px #000b, 0 0 0 2px var(--accent-color);
    border-radius: 16px;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    transform: translateY(0);
}

.agent-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transform: translate(-50%, -50%) scale(0);
    transition: transform 0.5s ease;
    opacity: 0.1;
    border-radius: 50%;
}

.agent-btn:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: var(--border-color-primary);
    box-shadow: var(--shadow-elevation-3), var(--shadow-primary-glow);
}

.agent-btn:hover::before {
    transform: translate(-50%, -50%) scale(2);
}

.agent-btn.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border-color: var(--primary-color);
    box-shadow: var(--shadow-elevation-2), var(--shadow-primary-glow);
}

.agent-btn[data-agent="deepseek"] {
    position: relative;
}

.agent-btn[data-agent="deepseek"]::after {
    content: '⚡';
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    font-size: 1.2rem;
    animation: electricPulse 1s ease-in-out infinite;
}

@keyframes electricPulse {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

.agent-btn.disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: var(--glass-bg);
    border-color: var(--border-color-soft);
}

.agent-btn.disabled:hover {
    transform: none;
    box-shadow: none;
}

/* Enhanced Agent Containers */
.agent-container {
    display: none;
    background: var(--card-bg);
    border: 1.5px solid var(--border-color-primary);
    box-shadow: 0 4px 32px #000b, 0 0 0 2px var(--accent-color);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: var(--shadow-elevation-2);
    margin-top: 2rem;
    position: relative;
    overflow: hidden;
}

.agent-container::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: var(--gradient-radial);
    opacity: 0.05;
    animation: float 20s ease-in-out infinite;
}

.agent-container.active {
    display: block;
    animation: containerSlideIn 0.5s ease-out;
}

@keyframes containerSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.agent-container h2 {
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2rem;
    font-size: 2.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Enhanced Input Box */
.input-box {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    align-items: flex-end;
}

textarea {
    flex: 1;
    min-height: 120px;
    padding: 1.25rem;
    border-radius: 16px;
    background: var(--input-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color-soft);
    color: var(--text-primary);
    resize: vertical;
    transition: var(--transition);
    font-size: 1rem;
    font-family: inherit;
    line-height: 1.5;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1), var(--shadow-primary-glow);
    background: var(--input-focus-bg);
    transform: translateY(-2px);
}

textarea::placeholder {
    color: var(--text-muted);
}

.submit-btn {
    background: var(--gradient-primary);
    border: none;
    border-radius: 12px;
    padding: 1rem 2.5rem;
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-50%) skewX(-45deg);
    transition: left 0.5s ease;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-elevation-3), var(--shadow-primary-glow);
}

.submit-btn:active {
    transform: translateY(-1px) scale(1);
}

/* Enhanced Response Box */
.response-box {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 2rem;
    min-height: 150px;
    white-space: pre-wrap;
    border: 1px solid var(--glass-border);
    font-size: 1rem;
    line-height: 1.6;
    position: relative;
    overflow: hidden;
}

.response-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s ease;
}

.response-box.loading::before {
    transform: scaleX(1);
    animation: loadingBar 2s ease-in-out infinite;
}

@keyframes loadingBar {
    0% {
        transform: scaleX(0);
        transform-origin: left;
    }
    50% {
        transform: scaleX(1);
        transform-origin: left;
    }
    50.1% {
        transform-origin: right;
    }
    100% {
        transform: scaleX(0);
        transform-origin: right;
    }
}

.text-response {
    animation: fadeInText 0.5s ease-out;
}

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

/* Enhanced Typing Indicator */
.typing-indicator {
    font-style: italic;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.typing-indicator::before {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid var(--primary-color);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    display: inline-block;
}

.typing-indicator span {
    display: inline-block;
    animation: typingDot 1.4s infinite;
}

.typing-indicator span:nth-child(1) { animation-delay: 0s; }
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingDot {
    0%, 60%, 100% {
        opacity: 0.3;
        transform: translateY(0);
    }
    30% {
        opacity: 1;
        transform: translateY(-10px);
    }
}

/* Enhanced Transition Indicator */
.transition-indicator {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 100;
}

.transition-indicator.visible {
    opacity: 1;
}

.transition-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--gradient-primary);
    box-shadow: var(--shadow-primary-glow);
    animation: pulseDot 1.5s ease-in-out infinite;
}

.transition-dot:nth-child(1) { animation-delay: 0s; }
.transition-dot:nth-child(2) { animation-delay: 0.3s; }
.transition-dot:nth-child(3) { animation-delay: 0.6s; }

@keyframes pulseDot {
    0%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.5);
        opacity: 1;
    }
}

/* Error Message Styling */
.error-msg {
    color: var(--danger-color);
    font-weight: 600;
    padding: 1rem;
    background: rgba(239, 68, 68, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(239, 68, 68, 0.3);
    animation: errorShake 0.5s ease-in-out;
}

@keyframes errorShake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* Advanced Animations */
@keyframes floatText {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

@keyframes glow {
    0% {
        box-shadow: 0 0 5px var(--primary-color);
    }
    50% {
        box-shadow: 0 0 20px var(--primary-color), 0 0 30px var(--secondary-color);
    }
    100% {
        box-shadow: 0 0 5px var(--primary-color);
    }
}

/* Hover Effects for Interactive Elements */
button, .agent-btn, .tab-btn, .config-btn {
    position: relative;
    overflow: hidden;
}

button::after, .agent-btn::after, .tab-btn::after, .config-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

button:active::after, .agent-btn:active::after, .tab-btn:active::after, .config-btn:active::after {
    width: 300px;
    height: 300px;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .container {
        width: 95%;
        padding: 2rem;
    }
    
    .main-title {
        font-size: 3.5rem;
    }
}

@media (max-width: 768px) {
    .container, .agent-container, .modal-content {
        padding: 1rem !important;
        border-radius: 16px;
    }
    .main-title {
        font-size: 2rem;
    }
    .category-title {
        font-size: 1.2rem;
    }
    .agent-btn {
        font-size: 1rem;
        padding: 1rem;
    }
    .fab {
        display: flex;
    }
    .top-right {
        top: 1rem;
        right: 1rem;
    }
}

@media (max-width: 480px) {
    .main-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 1.5rem;
        margin: 1rem auto;
    }
    
    .agent-btn {
        padding: 1.2rem;
        font-size: 1rem;
    }
}

/* Print Styles */
@media print {
    .animated-background,
    .particles,
    .config-btn,
    .transition-indicator {
        display: none !important;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .container {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* Accessibility Improvements */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus Visible for Keyboard Navigation */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Custom Scrollbar for Response Boxes */
.response-box::-webkit-scrollbar {
    width: 8px;
}

.response-box::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.response-box::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

.response-box::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Loading States */
.loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 30px;
    height: 30px;
    border: 3px solid var(--primary-color);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    transform: translate(-50%, -50%);
}

/* Success Animation */
@keyframes successPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.4);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(16, 185, 129, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
    }
}

.success {
    animation: successPulse 1s ease-out;
}

/* Tooltip Styles */
[data-tooltip] {
    position: relative;
}

[data-tooltip]::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--dark-surface);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    box-shadow: var(--shadow-elevation-2);
    margin-bottom: 0.5rem;
}

[data-tooltip]:hover::after {
    opacity: 1;
}

/* Code Highlighting (if needed) */
code {
    background: var(--input-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-family: 'Fira Code', 'Consolas', monospace;
    font-size: 0.9em;
}

pre {
    background: var(--input-bg);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    border: 1px solid var(--border-color-soft);
}

/* Image Styles for AI Responses */
.response-box img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 1rem 0;
    box-shadow: var(--shadow-elevation-2);
}

/* Floating action button for mobile quick agent switch */
.fab {
    display: none;
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--gradient-accent);
    box-shadow: 0 4px 24px #000b, 0 0 16px var(--accent-color);
    color: #fff;
    font-size: 2rem;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    cursor: pointer;
    transition: background 0.3s;
}
.fab:hover {
    background: var(--gradient-primary);
}

.top-right {
    position: absolute;
    top: 2rem;
    right: 2rem;
    z-index: 100;
}
@media (max-width: 768px) {
    .top-right {
        top: 1rem;
        right: 1rem;
    }
}