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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #ec4899;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --border-color: #334155;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.4);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 2rem;
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: backgroundMove 20s linear infinite;
    pointer-events: none;
    z-index: 0;
}

@keyframes backgroundMove {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(50px, 50px);
    }
}

.container {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.6s ease-out;
}

header h1 {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-light), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 30px rgba(99, 102, 241, 0.5);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    font-weight: 300;
}

.main-content {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
    animation: fadeInUp 0.6s ease-out;
    backdrop-filter: blur(10px);
}

/* Voice Status */
.voice-status {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(236, 72, 153, 0.1));
    border-radius: 16px;
    margin-bottom: 2rem;
    border: 1px solid rgba(99, 102, 241, 0.2);
    transition: all 0.3s ease;
}

.voice-status.passive {
    background: rgba(30, 41, 59, 0.5);
    border-color: var(--border-color);
    box-shadow: none;
}

.voice-status.passive .status-icon {
    background: rgba(148, 163, 184, 0.1);
}

.voice-status.passive .microphone-icon {
    color: var(--text-muted);
    opacity: 0.5;
}

.voice-status.passive .status-hint {
    display: none;
}

.voice-status.passive .status-message {
    color: var(--text-muted);
}

.voice-status.listening {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(99, 102, 241, 0.2));
    border-color: var(--success-color);
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.voice-status.processing {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), rgba(99, 102, 241, 0.2));
    border-color: var(--warning-color);
}

.status-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.2);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.voice-status.listening .status-icon {
    background: rgba(16, 185, 129, 0.3);
    animation: pulse 1.5s infinite;
}

.microphone-icon {
    width: 32px;
    height: 32px;
    color: var(--primary-light);
}

.voice-status.listening .microphone-icon {
    color: var(--success-color);
}

.status-text {
    flex: 1;
}

.status-message {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.status-hint {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Voice Button */
.voice-button {
    position: relative;
    width: 100%;
    padding: 1.5rem 2rem;
    font-size: 1.125rem;
    font-weight: 600;
    color: white;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 2rem;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.voice-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.voice-button:active {
    transform: translateY(0);
}

.voice-button.listening {
    background: linear-gradient(135deg, var(--success-color), #059669);
}

.voice-button.listening .pulse-ring {
    animation: pulseRing 1.5s cubic-bezier(0.215, 0.61, 0.355, 1) infinite;
}

.button-text {
    position: relative;
    z-index: 2;
}

.pulse-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border: 3px solid rgba(255, 255, 255, 0.5);
    border-radius: 16px;
    opacity: 0;
}

@keyframes pulseRing {
    0% {
        transform: translate(-50%, -50%) scale(0.8);
        opacity: 1;
    }

    100% {
        transform: translate(-50%, -50%) scale(1.2);
        opacity: 0;
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

/* Product Card */
.product-card {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), rgba(236, 72, 153, 0.05));
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    margin-bottom: 2rem;
    animation: slideIn 0.4s ease-out;
    box-shadow: var(--shadow-md);
}

.product-card.hidden {
    display: none;
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.card-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: white;
}

.card-body {
    padding: 1.5rem;
}

.product-info {
    margin-bottom: 1.5rem;
}

.product-info:last-child {
    margin-bottom: 0;
}

.product-info label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.product-info p {
    font-size: 1rem;
    color: var(--text-primary);
    line-height: 1.6;
}

.quantity-display {
    font-size: 2rem !important;
    font-weight: 700;
    color: var(--primary-light);
}

/* Confirmation Dialog */
.confirmation-dialog {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease-out;
}

.confirmation-dialog.hidden {
    display: none;
}

.dialog-content {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 2rem;
    max-width: 500px;
    width: 90%;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    animation: scaleIn 0.3s ease-out;
}

.dialog-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.dialog-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.dialog-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

/* Transcript Box */
.transcript-box {
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.transcript-box.passive {
    display: none;
}

.transcript-box h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.transcript-box p {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-family: 'Courier New', monospace;
    line-height: 1.6;
}

/* Instructions */
.instructions {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border-color);
    animation: fadeInUp 0.8s ease-out;
}

.instructions h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.instructions ol {
    padding-left: 1.5rem;
}

.instructions li {
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.instructions li:last-child {
    margin-bottom: 0;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    body {
        padding: 1rem;
    }

    header h1 {
        font-size: 2rem;
    }

    .main-content {
        padding: 1.5rem;
    }

    .voice-status {
        flex-direction: column;
        text-align: center;
    }

    .dialog-content {
        padding: 1.5rem;
    }

    .dialog-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}